multiport fuel injection (mfi) - mmc manuals

13A-1

GROUP 13A

MULTIPORT FUEL INJECTION (MFI)

CONTENTS

GENERAL DESCRIPTION. . . . . . . 13A-2

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS . . . . . . . . . . . . . . . . . . 13A-4

TROUBLESHOOTING STRATEGY . . . . . . 13A-4DIAGNOSTIC FUNCTION . . . . . . . . . . . . . 13A-4FAIL-SAFE FUNCTION REFERENCE TABLE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13A-24DIAGNOSTIC TROUBLE CODE CHART. . 13A-26SYMPTOM CHART. . . . . . . . . . . . . . . . . . . 13A-30DIAGNOSTIC TROUBLE CODE PROCEDURES. . . . . . . . . . . . . . . . . . . . . . 13A-33SYMPTOM PROCEDURES . . . . . . . . . . . . 13A-831DATA LIST REFERENCE TABLE . . . . . . . 13A-950ACTUATOR TEST REFERENCE TABLE. . 13A-966CHECK AT THE POWERTRAIN CONTROL MODULE (PCM) . . . . . . . . . . . . . . . . . . . . . 13A-968INSPECTION PROCEDURE USING AN OSCILLOSCOPE . . . . . . . . . . . . . . . . . . . . 13A-975

SPECIAL TOOLS. . . . . . . . . . . . . . 13A-985

ON-VEHICLE SERVICE. . . . . . . . . 13A-987COMPONENT LOCATION . . . . . . . . . . . . . 13A-987THROTTLE BODY (THROTTLE VALVE AREA) CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . 13A-993ACCELERATOR PEDAL POSITION SENSOR ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . 13A-994FUEL PRESSURE TEST . . . . . . . . . . . . . . 13A-995FUEL PUMP CONNECTOR DISCONNECTION (HOW TO REDUCE PRESSURIZED FUEL LINES) . . . . . . . . . . . . . . . . . . . . . . . 13A-998FUEL PUMP OPERATION CHECK . . . . . . 13A-998MULTIPORT FUEL INJECTION (MFI) RELAY, THROTTLE ACTUATOR CONTROL MOTOR RELAY AND FUEL PUMP RELAY CONTINUITY

CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13A-999INTAKE AIR TEMPERATURE SENSOR CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13A-1000ENGINE COOLANT TEMPERATURE SENSOR CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13A-1000THROTTLE POSITION SENSOR CHECK . 13A-1001ACCELERATOR PEDAL POSITION SENSOR CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13A-1001ACCELERATOR PEDAL POSITION SWITCH CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13A-1002HEATED OXYGEN SENSOR CHECK . . . . 13A-1002INJECTOR CHECK . . . . . . . . . . . . . . . . . . . 13A-1007THROTTLE ACTUATOR CONTROL MOTOR CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13A-1008EVAPORATIVE EMISSION PURGE SOLENOID CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13A-1008EGR VALVE CHECK. . . . . . . . . . . . . . . . . . 13A-1009INTAKE MANIFOLD TUNING SOLENOID CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13A-1009

INJECTOR . . . . . . . . . . . . . . . . . . . 13A-1010REMOVAL AND INSTALLATION . . . . . . . . 13A-1010

THROTTLE BODY ASSEMBLY . . . 13A-1012REMOVAL AND INSTALLATION . . . . . . . . 13A-1012

POWERTRAIN CONTROL MODULE (PCM) . . . . . . . . . . . . . . . . . . . . . . . 13A-1014

REMOVAL AND INSTALLATION . . . . . . . . 13A-1014

SPECIFICATIONS . . . . . . . . . . . . . 13A-1015FASTENER TIGHTENING SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . 13A-1015GENERAL SPECIFICATIONS . . . . . . . . . . 13A-1015SERVICE SPECIFICATIONS . . . . . . . . . . . 13A-1016SEALANT AND ADHESIVE . . . . . . . . . . . . 13A-1016

GENERAL DESCRIPTIONMULTIPORT FUEL INJECTION (MFI)13A-2

GENERAL DESCRIPTIONM1131000101005

.

The Multiport Fuel Injection System consists of sensors which detect the engine conditions, the POWERTRAIN CONTROL MODULE (PCM) which controls the system based on signals from these sensors, and actuators which operate under the control of the PCM.The PCM carries out activities such as fuel injection con-trol, idle air control, and ignition timing control.In addition, the PCM is equipped with several diagnostic test modes which simplify troubleshooting when a problem develops.

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FUEL INJECTION CONTROLThe injector drive times and injector timing are controlled so that the optimum air/fuel mixture is supplied to the engine to correspond to the continually-changing engine operation conditions.A single injector is mounted at the intake port of each cyl-inder. Fuel is sent under pressure from the fuel tank to the fuel injectors by the fuel pump, with the pressure being regulated by the fuel pressure regulator. The regulated fuel is distributed to each of the injectors.Fuel injection is normally carried out once for each cylin-der for every two rotations of the crankshaft. The firing order is 1-2-3-4-5-6. Each cylinder has a dedicated fuel injector. This is called multiport.The PCM provides a richer air/fuel mixture by carrying out "open-loop" control when the engine is cold or operating under high load conditions in order to maintain engine per-formance. In addition, when the engine is under normal operating temperature after warming-up, the PCM controls the air/fuel mixture by using the heated oxygen sensor sig-nal to carry out "closed-loop" control. The closed-loop con-trol achieves the theoretical air/fuel mixture ratio where the catalytic converter can obtains the maximum cleaning performance.

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THROTTLE VALVE OPENING CONTROLThis system electrically controls the opening of the throttle valve. The PCM detects the amount of travel of the accel-erator pedal via the accelerator pedal position sensor, and controls the actuation of the throttle actuator control motor, which is mounted on the throttle body, in order to attain the target throttle valve opening that has been predetermined in accordance with driving conditions.

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IDLE AIR CONTROLThe idle speed is kept at the optimum speed by controlling the amount of air that passes through the throttle valve in accordance with changes in idling conditions and engine load during idling.

The PCM drives the throttle actuator control motor to keep the engine running at the pre-set idle target speed in accordance with the engine coolant temperature and A/C and other electrical load. In addition, when the air condi-tioning switch is turned off and on while the engine is idling, the throttle actuator control motor adjusts the throt-tle valve passes through air amount according to the engine load conditions to avoid fluctuations in the engine speed.

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IGNITION TIMING CONTROLThe ignition power transistor located in the ignition primary circuit turns ON and OFF to control the primary current flow to the ignition coil. This controls the ignition timing to provide the optimum ignition timing with respect to the engine operating conditions. The ignition timing is deter-mined by the PCM from engine speed, intake air volume, engine coolant temperature, and atmospheric pressure.

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DIAGNOSTIC TEST MODE• When an abnormality is detected in one of the sensors

or actuators related to emission control, the Malfunc-tion Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) illuminates to warn the driver.

• When an abnormality is detected in one of the sensors or actuators, a diagnostic trouble code corresponding to the abnormality is stored in the PCM.

• The RAM data inside the PCM that is related to the sensors and actuators can be read with the scan tool. In addition, the actuators can be controlled by scan tool MB991958 (MUT-III Sub Assembly) under certain circumstances.

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OTHER CONTROL FUNCTIONS• Fuel Pump Control

Turns the fuel pump relay ON so that current is sup-plied to the fuel pump while the engine is cranking or running.

• A/C Compressor Clutch Relay ControlTurns the compressor clutch of the A/C ON and OFF.

• Evaporative Emission Purge Control(Refer to GROUP 17, Emission Control System − Evaporative Emission System − General Description P.17-64.)

• EGR Control(Refer to GROUP 17, Emission Control System − Exhaust Gas Recirculation (EGR) System − General Description P.17-68.)

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GENERAL DESCRIPTIONMULTIPORT FUEL INJECTION (MFI) 13A-3

MULTIPORT FUEL INJECTION (MFI) SYSTEM DIAGRAM

NOTE: For the vacuum routing, refer to GROUP 17, Emission Control System − Vacuum Hoses − Vac-

uum Hose Routing P.17-61.AK303011

1 LEFT BANK HEATED OXYGEN SENSOR (FRONT)2 VOLUME AIRFLOW SENSOR3 INTAKE AIR TEMPERATURE SENSOR4 THROTTLE POSITION SENSOR (MAIN/SUB)5 CAMSHAFT POSITION SENSOR6 CRANKSHAFT POSITION SENSOR7 BAROMETRIC PRESSURE SENSOR8 ENGINE COOLANT TEMPERATURE SENSOR9 LEFT BANK HEATED OXYGEN SENSOR (REAR)10 RIGHT BANK HEATED OXYGEN SENSOR (FRONT)11 RIGHT BANK HEATED OXYGEN SENSOR (REAR)12 FUEL TANK DIFFERENTIAL PRESSURE SENSOR13 MANIFOLD ABSOLUTE PRESSURE SENSOR14 FUEL TANK TEMPERATURE SENSOR15 FUEL LEVEL SENSOR

POWER SUPPLY ACCELERATOR PEDAL POSITION SENSOR (MAIN/SUB) ACCELERATOR PEDAL POSITION SWITCH VEHICLE SPEED SENSOR A/C SWITCH 1, 2 TRANSMISSION RANGE SWITCH POWER STEERING PRESSURE SWITCH IGNITION SWITCH - ST KNOCK SENSOR

1 INJECTOR2 EVAPORATIVE EMISSION PURGE SOLENOID3 THROTTLE ACTUATOR CONTROL MOTOR4 EVAPORATIVE EMISSION VENTILATION SOLENOID5 EGR VALVE (STEPPER MOTOR)6 INTAKE MANIFOLD TUNING SOLENOID

FUEL PUMP RELAY MULTIPORT FUEL INJECTION (MFI) RELAY THROTTLE ACTUATOR CONTROL MOTOR RELAY A/C COMPRESSER CLUTCH RELAY MALFUNCTION INDICATOR LAMP (SERVICE ENGINE SOON OR CHECK ENGINE LAMP) DIAGNOSTIC OUTPUT IGNITION COIL, IGNITION POWER TRANSISTER

PCM

SENSE DECIDE ACT

1 LEFT BANK HEATED OXYGEN SENSOR (FRONT)

6 CRANKSHAFT POSITION SENSOR11 RIGHT BANK HEATED OXYGEN SENSOR (REAR)

9 LEFT BANK HEATED OXYGEN SENSOR (REAR)

5 CAMSHAFT POSITION SENSOR

1 INJECTOR

M* M*

6 INTAKE MANIFOLD TUNING SOLENOID

VACUUM TANK 3 THROTTLE ACTUATOR CONTROL MOTOR

2 EVAPORATIVE EMISSION PURGE SOLENOID

5 EGR VALVE (STEPPER MOTOR)

4

EVAPORATIVE EMISSIONCANISTER

FUEL TANK

FROMFUELPUMP

8

2, 7VOLUME AIRFLOW SENSOR(WITH BAROMETRICPRESSURE SENSOR)

3 INTAKE AIR TEMPERATURE SENSOR

AIR INLET

12 FUEL TANK DIFFERENTIAL PRESSURE SENSOR

14 FUEL TANK TEMPERATURE SENSOR

15 FUEL LEVEL SENSOR

4 THROTTLE POSITION SENSOR (MAIN/SUB)

TOFUELTANK

FUELPRESSUREREGULATOR

13 MANIFOLD ABSOLUTE PRESSURE SENSOR

ENGINE COOLANT TEMPERATURESENSOR

10RIGHT BANK HEATED OXYGEN SENSOR(FRONT)

NOTE*: Manifold port

EVAPORATIVE EMISSIONVENTILATION SOLENOID

EVAPORATIVE EMISSIONVENTILATION VALVE

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MULTIPORT FUEL INJECTION (MFI) DIAGNOSISMULTIPORT FUEL INJECTION (MFI)13A-4

MULTIPORT FUEL INJECTION (MFI) DIAGNOSISTROUBLESHOOTING STRATEGY

M1131150000557

NOTE: If a DTC is erased, its "freeze frame" data will be also erased and the system readiness test status will be reset. Store the "freeze frame" data before erasing the DTC.Use these steps to plan your diagnostic strategy. If you follow them carefully, you will be sure to have exhausted most of the possible ways to find an MFI fault.1. Gather as much information as possible about the

complaint from the customer.2. Verify that the condition described by the

customer exists.3. Check the vehicle for any MFI Diagnostic Trouble

Code (DTC).4. If you cannot verify the condition and there are no

DTCs, the malfunction is intermittent. For information on how to cope with intermittent malfunctions, refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points − How to cope with Intermittent Malfunction P.00-6.

5. If you can verify the condition but there are no DTCs, or the system cannot communicate with the scan tool, refer to the trouble symptom classification table.

6. If there is a DTC, record the number of the code, then erase the code from the memory using the scan tool.

7. Reconfirm the malfunction symptom and carry out a test drive with the drive cycle pattern.

8. If DTC is set again, carry out an inspection with appropriate diagnostic trouble code procedures.

9. If DTC is not set again, the malfunction is intermittent. For information on how to cope with intermittent malfunctions, refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points − How to cope with Intermittent Malfunction P.00-6.

10.After repairs are completed, conduct a road test duplicating the complaint set conditions to confirm the malfunction has been connected.

NOTE: If the powertrain control module (PCM) is replaced, Immobilizer Encrypted Code Registration should be carried out, Refer to GROUP 54A, Ignition Switch − On-vehicle Service − Immobilizer Encrypted Code Registration P.54A-29.

DIAGNOSTIC FUNCTIONM1131155500201

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MALFUNCTION INDICATOR LAMP (SERVICE ENGINE SOON OR CHECK ENGINE LAMP)Among the on-board diagnostic items, a Service Engine Soon/Malfunction Indicator Lamp illuminates to notify the driver of an emission control malfunction. However, when an irregular signal returns to normal and the powertrain control module judges that it has returned to normal, the Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) is switched off. Moreover, when the ignition switch is turned off, the lamp is switched off. Even if the ignition switch is turned on again, the lamp does not illuminate until the malfunction is detected. Immediately after the ignition switch is turned on, the Malfunc-tion Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) is lit for 20 seconds to indicate that the Malfunc-tion Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) operates normally.

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BRAKE

SERVICEENGINE SOON

F H

CE

ATTEMP

C/D LOCK

100

120 23

45

AKX01463AE

MALFUNCTION INDICATOR LAMP (SERVICE ENGINE SOON OR CHECK ENGINE LAMP)

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MULTIPORT FUEL INJECTION (MFI) DIAGNOSISMULTIPORT FUEL INJECTION (MFI) 13A-5

Items Indicated by the Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp)

DTC NO. ITEMS- Powertrain control module (PCM) malfunctionP0101* Volume airflow circuit range/performance problemP0102* Volume airflow circuit low inputP0106 Manifold absolute pressure circuit range/performance problemP0107 Manifold absolute pressure circuit low inputP0108 Manifold absolute pressure circuit high inputP0111* Intake air temperature circuit range/performance problemP0112* Intake air temperature circuit low inputP0113* Intake air temperature circuit high inputP0116* Engine coolant temperature circuit range/performance problemP0117* Engine coolant temperature circuit low inputP0118* Engine coolant temperature circuit high inputP0122* Throttle position sensor (main) circuit low inputP0123* Throttle position sensor (main) circuit high inputP0125* Insufficient coolant temperature for closed loop fuel controlP0128 Coolant thermostat (Coolant temperature below thermostat regulating temperature)P0130 Heated oxygen sensor circuit (bank 1 sensor 1)P0131 Heated oxygen sensor circuit low voltage (bank 1 sensor 1)P0132 Heated oxygen sensor circuit high voltage (bank 1 sensor 1) P0133 Heated oxygen sensor circuit slow response (bank 1 sensor 1)P0134* Heated oxygen sensor circuit no activity detected (bank 1 sensor 1)P0135 Heated oxygen sensor heater circuit (bank 1 sensor 1)P0136 Heated oxygen sensor circuit (bank 1 sensor 2)P0137 Heated oxygen sensor circuit low voltage (bank 1 sensor 2)P0138 Heated oxygen sensor circuit high voltage (bank 1 sensor 2)P0139 Heated oxygen sensor circuit slow response (bank 1 sensor 2)P0141 Heated oxygen sensor heater circuit (bank 1 sensor 2) P0150 Heated oxygen sensor circuit (bank 2 sensor 1)P0151 Heated oxygen sensor circuit low voltage (bank 2 sensor 1)P0152 Heated oxygen sensor circuit high voltage (bank 2 sensor 1)P0153 Heated oxygen sensor circuit slow response (bank 2 sensor 1)P0154* Heated oxygen sensor circuit no activity detected (bank 2 sensor 1)P0155 Heated oxygen sensor heater circuit (bank 2 sensor 1) P0156 Heated oxygen sensor circuit (bank 2 sensor 2)P0157 Heated oxygen sensor circuit low voltage (bank 2 sensor 2) P0158 Heated oxygen sensor circuit high voltage (bank 2 sensor 2) P0159 Heated oxygen sensor circuit slow response (bank 2 sensor 2)P0161 Heated oxygen sensor heater circuit (bank 2 sensor 2)P0171 System too lean (bank 1)

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P0172 System too rich (bank 1)P0174 System too lean (bank 2)P0175 System too rich (bank 2)P0181 Fuel tank temperature sensor circuit range/performanceP0182 Fuel tank temperature sensor circuit low inputP0183 Fuel tank temperature sensor circuit high inputP0201 Injector circuit − cylinder 1P0202 Injector circuit − cylinder 2P0203 Injector circuit − cylinder 3P0204 Injector circuit − cylinder 4P0205 Injector circuit − cylinder 5P0206 Injector circuit − cylinder 6P0222* Throttle position sensor (sub) circuit low inputP0223* Throttle position sensor (sub) circuit high inputP0300 Random/multiple cylinder misfire detectedP0301 Cylinder 1 misfire detectedP0302 Cylinder 2 misfire detectedP0303 Cylinder 3 misfire detectedP0304 Cylinder 4 misfire detectedP0305 Cylinder 5 misfire detectedP0306 Cylinder 6 misfire detectedP0335* Crankshaft position sensor circuitP0340* Camshaft position sensor circuitP0401 Exhaust gas recirculation flow insufficient detectedP0403 Exhaust gas recirculation control circuitP0421 Warm up catalyst efficiency below threshold (bank 1)P0431 Warm up catalyst efficiency below threshold (bank 2)P0441 Evaporative emission control system incorrect purge flowP0442 Evaporative emission control system leak detected (Small leak)P0443 Evaporative emission control system purge control valve circuitP0446 Evaporative emission control system vent control circuitP0451 Evaporative emission control system pressure sensor range/performanceP0452 Evaporative emission control system pressure sensor low inputP0453 Evaporative emission control system pressure sensor high inputP0455 Evaporative emission control system leak detected (Gross leak)P0456 Evaporative emission control system leak detected (Very small leak)P0461 Fuel level sensor circuit range/performanceP0500* Vehicle speed sensor malfunctionP0506 Idle control system RPM lower than expectedP0507 Idle control system RPM higher than expected

DTC NO. ITEMS

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P0513 Immobilizer malfunctionP0551 Power steering pressure sensor circuit range/performanceP0554 Power steering pressure sensor circuit intermittentP0606* Powertrain control module main processor malfunctionP0638* Throttle actuator control motor circuit range/performanceP0642* Throttle position sensor power supplyP0657* Throttle actuator control motor relay circuit malfunctionP0660 Intake manifold tuning circuit malfunctionP0705 Transmission range switch circuit malfunction (RPNDL input)P0712 Transmission fluid temperature sensor circuit low inputP0713 Transmission fluid temperature sensor circuit high inputP0715 Input/Turbine speed sensor circuitP0720 Output speed sensor circuitP0731 Gear 1 incorrect ratioP0732 Gear 2 incorrect ratioP0733 Gear 3 incorrect ratioP0734 Gear 4 incorrect ratioP0735 Gear 5 incorrect ratioP0736 Gear R incorrect ratioP0741 Torque converter clutch circuit performance or stuck offP0742 Torque converter clutch circuit stuck onP0743 Torque converter clutch circuit electricalP0753 Shift solenoid "A" electricalP0758 Shift solenoid "B" electricalP0763 Shift solenoid "C" electricalP0768 Shift solenoid "D" electricalP0773 Shift solenoid "E" electricalP1601* Communication malfunction (between PCM and throttle actuator control module)P1603* Battery backup circuit malfunctionP1751 A/T control relay malfunctionP2100* Throttle actuator control motor circuit (open)P2101* Throttle actuator control motor magneto malfunctionP2102* Throttle actuator control motor circuit (shorted low)P2103* Throttle actuator control motor circuit (shorted high)P2108* Throttle actuator control processor malfunctionP2121* Accelerator pedal position sensor (main) circuit range/performance problemP2122* Accelerator pedal position sensor (main) circuit low inputP2123* Accelerator pedal position sensor (main) circuit high inputP2126* Accelerator pedal position sensor (sub) circuit range/performance problemP2127* Accelerator pedal position sensor (sub) circuit low input

DTC NO. ITEMS

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NOTE: If the Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) illuminates because of a malfunction of the powertrain control module (PCM), communication between scan tool MB991958 (MUT-III Sub Assembly) and the PCM is impossible. In this case, the diagnostic trouble code can-not be read.NOTE: After the PCM has detected a malfunction, the Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) illuminates when the engine is next turned on and the same malfunction is re-detected. However, for items marked with a "*" in the DTC NO. column, the Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) illuminates only on the first detection of the malfunction.NOTE: After the Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) illuminates, it will be switched off under the following conditions..

• When the PCM monitored the power train malfunction three times* and met set condition requirements, it detected no malfunction. *: In this case, "one time" indicates from engine start to stop.

• For misfiring or a fuel trim malfunction, when driving conditions (engine speed, engine coolant tempera-ture, etc.) are similar to those when the malfunction was first recorded.

NOTE: Sensor 1 indicates the sensor mounted at a position closest to the engine, and sensor 2 indicates the sensor mounted at the position second closest to the engine.NOTE: Bank 1 indicates the right bank side cylinder, and bank 2 indicates the left bank side cylinder.

HOW TO CONNECT THE SCAN TOOL (MUT-III)Required Special Tools:

• MB991958: Scan Tool (MUT-III Sub Assembly)• MB991824: V.C.I.• MB991827: USB Cable• MB991911: Main Harness B

P2128* Accelerator pedal position sensor (sub) circuit high inputP2135* Throttle position sensor (main and sub) range/performance problemP2138* Accelerator pedal position sensor (main and sub) range/performance problemP2227* Barometric pressure circuit range/performance problemP2228* Barometric pressure circuit low inputP2229* Barometric pressure circuit high input

DTC NO. ITEMS

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CAUTIONTo prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before con-necting or disconnecting scan tool MB991958.1. Ensure that the ignition switch is at the "LOCK" (OFF)

position.2. Start up the personal computer.3. Connect special tool MB991827 to special tool MB991824

and the personal computer.4. Connect special tool MB991911 to special tool MB991824.5. Connect special tool MB991911 to the data link connector.6. Turn the power switch of special tool MB991824 to the "ON"

position.NOTE: When the special tool MB991824 is energized, spe-cial tool MB991824 indicator light will be illuminated in a green color.

7. Start the MUT-III system on the personal computer.NOTE: Disconnecting the scan tool MB991958 is the reverse of the connecting sequence, making sure that the ignition switch is at the "LOCK" (OFF) position.

HOW TO READ AND ERASE DIAGNOSTIC TROUBLE CODES.Required Special Tools:


CAUTIONTo prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before con-necting or disconnecting scan tool MB991958.NOTE: If the battery voltage is low, diagnostic trouble codes will not be set. Check the battery if scan tool MB991958 does not display.

AK302970AB

MB991911

MB991824

MB991827

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1. Connect scan tool MB991958 to the data link connector.2. Turn the ignition switch to the "ON" position.3. Select "Interactive Diagnosis" from the start-up screen.4. Select "System select."5. Choose "MFI" from the "POWER TRAIN" tab.6. Select "MITSUBISHI."7. Select "Diagnostic Trouble Code"8. If a DTC is set, it is shown.9. Choose "Erase DTCs" to erase the DTC.

HOW TO READ DATA LISTRequired Special Tools:

• MB991958: Scan Tool (MUT-III Sub Assemb]y)• MB991824: V.C.I.• MB991827: Usb Cable• MB991911: Main Harness B

CAUTIONTo prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before con-necting or disconnecting scan tool MB991958.1. Connect scan tool MB991958 to the data link connector.2. Turn the ignition switch to the "ON" position.3. Select "Interactive Diagnosis" from the start-up screen.4. Select "System select."5. Choose "MFI" from the "POWER TRAIN" tab.6. Select "MITSUBISHI."7. Select "Data List."8. Choose an appropriate item and select the "OK" button.

HOW TO PERFORM ACTUATOR TESTRequired Special Tools:


AK302970AB

MB991911

MB991824

MB991827

AK302970AB

MB991911

MB991824

MB991827

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CAUTIONTo prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before con-necting or disconnecting scan tool MB991958.1. Connect scan tool MB991958 to the data link connector.2. Turn the ignition switch to the "ON" position.3. Select "Interactive Diagnosis" from the start-up screen.4. Select "System select."5. Choose "MFI" from the "POWER TRAIN" tab.6. Select "MITSUBISHI."7. Select "Actuator Test."8. Choose an appropriate item and select the "OK" button.

PROVISIONAL DTCs [MUT-III OBD-II Test Mode - Results (Mode 7)]The scan tool MB991958 (MUT-III Sub Assembly) will display the Provisional DTCs reported by PCM if the PCM detects some malfunction for "Misfire", "Fuel System" and "Compre-hensive" monitoring during a SINGLE Driving Cycle. The intended use of this data is to assist the technician after a vehi-cle repair, and after clearing diagnostic information, by report-ing test result after a SINGLE Driving Cycle. Note that the test results reported by this mode do not necessarily indicate a faulty component/system. If test results indicate a failure after ADDITIONAL (consecutive) driving, then the Malfunction Indi-cator Lamp (SERVICE ENGINE SOON) will be illuminated and a DTC will set.

AK302970AB

MB991911

MB991824

MB991827

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MODE 6 REFERENCE TABLEThe engine control module (ECM) monitors the condition of emission control system.By selecting MODE 6 using scan tool, Test Result and Limit Value (minimum) *1 or (maximum) *2 about the main items of emission control system which ECM monitors can be confirmed. The value at the last monitor-ing is output by ECM as a test result.

TEST ID

MONITORING ITEM

SIMPLE TECHNICAL DESCRIPTION

INDICATION OF SCAN TOOL

CONVERSION COEFFICIENT IN USING GENERAL SCAN TOOL

01 Catalyst monitor (Bank 1)

PCM monitors the deterioration of catalyst at right bank side by the output frequency ratio between right bank heated oxygen sensor (front) and right bank heated oxygen sensor (rear).

Catalyst Frequency Ratio Bank 1Test Result and Limit Value (max.)

× 0.0039

02 Catalyst monitor (Bank 2)

PCM monitors the deterioration of catalyst at left bank side by the output frequency ratio between left bank heated oxygen sensor (front) and left bank heated oxygen sensor (rear).

Catalyst Frequency Ratio Bank 2Test Result and Limit Value (max.)

× 0.0039

03 EGR monitor PCM monitors the operation of EGR system by the pressure difference of intake manifold between before and after introduction of EGR using the manifold absolute pressure sensor.

EGR Monitor Pressure ValueTest Result and Limit Value (min.) kPa

× 0.43 kPa

06 Evaporation leak monitor (Small leak)

After PCM vacuumizes the fuel tank and the fuel line and then the specified time is passed, PCM monitors the leak of fuel evaporation gas through the fuel tank differential pressure sensor to check the reduction of vacuum in the fuel tank.

EVAP Leak Mon. 1 mm Pressure ValueTest Result and Limit Value (max.) kPa

× 0.032 kPa

07 Evaporation leak monitor (Gross leak)

PCM monitors the leak of fuel evaporation gas by checking whether the pressure can be reduced (the amount of pressure reduction) using the fuel tank differential pressure sensor after sealing the fuel tank and the fuel line.

EVAP Leak Mon. Gross Pressure ValueTest Result and Limit Value (min.) kPa

× 0.032 kPa

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NOTE: *1 : Minimum value: The test fails if test value is less than this value.NOTE: *2 : Maximum value: The test fails if test value is greater than this value.

DIAGNOSTIC BY DIAGNOSTIC TEST MODE II (INCREASED SENSITIVITY)Required Special Tools:

• MB991958: Scan tool (MUT-III Sub Assembly)• MB991824: V.C.I.• MB991827: USB Cable• MB991911: Main Harness B

08 Evaporation leak monitor (Very small leak)

After PCM vacuumizes the fuel tank and the fuel line and then the specified time is passed, PCM monitors the leak of fuel evaporation gas through the fuel tank differential pressure sensor to check the reduction of vacuum in the fuel tank.

EVAP Leak Mon. 0.5 mm Pressure ValueTest Result and Limit Value (max.) kPa

× 0.032 kPa

09 Heated oxygen sensor monitor (Rich/Lean Switching) (Bank 1 Sensor 1)

PCM monitors the deteriorated condition of the heated oxygen sensor by checking the lean/rich switching frequency of the heated oxygen sensor.

HO2S B1 SENSOR 1 Rich/Lean Switching CountTest Result and Limit Value (min.)

×1 count

0A Heated oxygen sensor monitor (Rich/Lean Switching) (Bank 2 Sensor 1)

PCM monitors the deteriorated condition of the heated oxygen sensor by checking the lean/rich switching frequency of the heated oxygen sensor.

HO2S B2 SENSOR 1 Rich/Lean Switching CountTest Result and Limit Value (min.)

× 1count

0B Heated oxygen sensor monitor (Voltage) (Bank 1 Sensor 2)

PCM checks the output voltage of the heated oxygen sensor (rear) in order to monitor whether the heated oxygen sensor output is stuck.

HO2S B1 SENSOR2 Change in VoltTest Result and Limit Value (min.)

× 19.5mV

0C Heated oxygen sensor monitor (Voltage) (Bank 2 Sensor 2)

PCM checks the output voltage of the heated oxygen sensor (rear) in order to monitor whether the heated oxygen sensor output is stuck.

HO2S B2 SENSOR 2 Change in VoltTest Result and Limit Value (min.)

× 19.5mV

TEST ID

MONITORING ITEM

SIMPLE TECHNICAL DESCRIPTION

INDICATION OF SCAN TOOL

CONVERSION COEFFICIENT IN USING GENERAL SCAN TOOL

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CAUTIONTo prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before con-necting or disconnecting scan tool MB991958.NOTE: When mode II is selected with MB991958, the Malfunc-tion Indicator Lamp (SERVICE ENGINE SOON) will light when the powertrain control module (PCM) first detects the trouble (Note that this is only for emission-related trouble). At the same time, the relevant diagnostic trouble codes will be registered. In respect to the comprehensive component electrical faults (opens/shorts), the time for the diagnostic trouble code to be registered after the fault occurrence is four seconds → one second. Therefore, the confirmation of the trouble symptom and the confirmation after completing repairs can be reduced. To return to the normal mode I after mode II has been selected once, the ignition switch must be turned "OFF" once or mode I must be reselected with MB991958. The diagnostic trouble code, system readiness test status and freeze frame data, etc., will be erased when mode I is returned to, so record these before returning to mode I.1. Connect scan tool MB991958 to the data link connector.2. Turn the ignition switch to the "ON" position.3. Change the diagnostic test mode of the powertrain control

module to DIAGNOSTIC TEST MODE II (INCREASED SENSITIVITY).

4. Road test the vehicle.5. Read the diagnostic trouble code and repair the

malfunctioning part.6. Turn the ignition switch to the "LOCK" (OFF) position.7. Disconnect scan tool MB991958 from the data link

connector.

ON-BOARD DIAGNOSTICSThe powertrain control module (PCM) monitors the input/output signals (some signals all the time and others under specified conditions) of the PCM. When a malfunction continues for a specified time or longer after the irregular signal is initially monitored, the PCM judges that a malfunction has occurred. After the PCM first detects a malfunction, a diagnostic trouble code is recorded when the engine is restarted and the same mal-function is re-detected. However, for items marked with a "*", a diagnostic trouble code is recorded on the first detection of the malfunction. There are 130 diagnostic items. The diagnostic results can be read out with a scan tool. Since memorization of the diagnostic trouble codes is backed up directly by the battery, the diag-nostic results are memorized even if the ignition key is turned off. The diagnostic trouble codes will, however, be erased when the battery terminal or the PCM connector is disconnected. In addition, the diagnostic trouble code can also be erased by turning the ignition switch to ON and sending the diagnostic trouble code erase signal from scan tool MB991958 to the PCM. NOTE: If the sensor connector is disconnected with the ignition switch turned on, the diagnostic trouble code is memorized. In this case, send the diagnostic trouble code erase signal to the PCM in order to erase the diagnostic memory. The 130 diagnostic items are all indicated sequentially from the smallest code number. The PCM records the engine operating condition when the diagnostic trouble code is set. This data is called "Freeze-frame" data. This data can be read by using the scan tool, and can then be used in simulation tests for troubleshooting. Data items are as follows:NOTE: As for Diagnostic trouble code P1603, "freeze frame" data is not memorized.

AK302970AB

MB991911

MB991824

MB991827

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MUT-III SCAN TOOL DISPLAY

ITEM NO. DATA ITEM UNIT or STATE

ECT SENSOR 21 Engine coolant temperature sensor

°C or °F

ENGINE LOAD 87 Calculated load value %ENGINE SPEED 22 Crankshaft position sensor

(engine speed)r/min

IAT SENSOR 13 Intake air temperature sensor °C or °FIG. TIMING ADV 44 Ignition coils and ignition

power transistordeg

LONG TRIM B1 81 Long-term fuel trim (trim) bank1

%

LONG TRIM B2 83 Long-term fuel trim (trim) bank2

%

MAP/MDP SNSR. 32 Manifold absolute pressure sensor

kPa

SHORT TRIM B1 82 Short-term fuel trim (trim) bank1

%

SHORT TRIM B2 84 Short-term fuel trim (trim) bank2

%

SYS. STATUS B1 88 Fuel control system status bank 1 (right)

• Open loop• Closed loop • Open loop-drive condition • Open loop-DTC set • Closed loop-O2 (rear)

failedSYS. STATUS B2 89 Fuel control system status

bank 2 (left)• Open loop• Closed loop • Open loop-drive condition • Open loop-DTC set • Closed loop-O2 (rear)

failedTP SENSOR 8A Throttle position sensor %VAF/MAF SNSR. 12 Volume airflow sensor (mass

airflow rate)gm/s

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OBD-II DRIVE CYCLEAll kinds of diagnostic trouble codes (DTCs) can be monitored by carrying out a short drive according to the following six drive cycle pattern. In other words, doing such a drive regenerates any kind of trouble which involves illuminating the Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) and verifies the repair procedure has eliminated [the trouble the Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) is no longer illuminated].

CAUTIONTwo technicians should always be in the vehicle when carrying out a test.NOTE: Check that the diagnosis trouble code (DTC) is not output before driving the OBD-II drive cycle. Erase the DTC if it has been output.DRIVE CYCLE PATTERN LISTPROCEDURE MONITOR ITEM DIAGNOSTIC TROUBLE

CODE (DTC)1 Evaporative emission system leak monitor P0441, P0442, P0451,

P0452, P0453, P0455, P0456

2 Fuel trim monitor P0171, P0172, P0174, P0175

3 Catalytic converter monitor P0421, P04314 Heated oxygen sensor monitor P0133, P0139, P0153,

P01595 Exhaust gas recirculation (EGR) system monitor P04016 Other monitor Main components P0134, P0154, P0300,

P0301, P0302, P0303, P0304, P0305, P0306, P0506, P0507, P1400

Sensors and switches P0101, P0102, P0106, P0107, P0108, P0111, P0112, P0113, P0116, P0117, P0118, P0125, P0181, P0182, P0183, P0335, P0340, P0461

Wire breakage and short circuit

P0130, P0131, P0132, P0135, P0136, P0137, P0138, P0141, P0150, P0151, P0152, P0155, P0156, P0157, P0158, P0161, P0201, P0202, P0203, P0204, P0205, P0206, P0403, P0443, P0446

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.

PROCEDURE 1EVAPORATIVE EMISSION SYSTEM LEAK MONITORDTC P0441, P0442, P0451, P0452, P0453, P0455, P0456Drive cycle pattern

This monitor [from start to ignition switch "LOCK" (OFF) position] will be completed while driving the vehicle with the following drive cycle pattern. It will take 8 minutes. You must complete this drive twice.NOTE: Vehicle speed and throttle opening angle should be within the shaded range.

Inspection conditions

• Engine coolant temperature: 45°C (113°F) or less (The engine is stopped before the test drive is started)

• Atmospheric temperature: 5 − 45°C (41 − 113°F)• Condition of A/T: Selector lever D range

AKX01345AKX01345

(3)

(2)

(1)

(4)

(5)

200 SECONDSOR MORE

PREPARATIONPERIOD

ENGINE START IGNITION SWITCH: "LOCK" (OFF)

DURINGMONITOR

150 SECONDSOR MORE

89 - 97 km/h (55 - 60 mph)97(60)

64(40)

32(20)

0

100

50

0

VEHICLE SPEEDkm/h (mph)

AKX01345AB

CALCULATEDLOAD (%)

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.

Test procedure 1. Engine: start2. Accelerate until the vehicle speed is 89 − 97 km/h (55 − 60 mph).3. Travel for 200 seconds or more while keeping the vehicle speed at 89 − 97 km/h (55 − 60 mph).4. While keeping the accelerator pedal opening degree constant, keep the vehicle speed at 89 − 97

km/h (55 − 60 mph) and travel for 150 seconds or more. (During monitor)5. Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position.6. Confirm that the diagnostic trouble code (DTC) is not output.7. If DTC P0441 is output, refer to DTC P0441 − Evaporative Emission Control System Incorrect

Purge Flow P.13A-521.If DTC P0442 is output, refer to DTC P0442 − Evaporative Emission Control System Leak Detected (Small Leak) P.13A-525.If DTC P0451 is output, refer to DTC P0451 − Evaporative Emission Control System Pressure Sensor Range/performance P.13A-558.If DTC P0452 is output, refer to DTC P0452 − Evaporative Emission Control System Pressure Sensor Low Input P.13A-575.If DTC P0453 is output, refer to DTC P0453 − Evaporative Emission Control System Pressure Sensor High Input P.13A-592.If DTC P0455 is output, refer to DTC P0455 − Evaporative Emission Control System Leak Detected (Gross Leak) P.13A-609.If DTC P0456 is output, refer to DTC P0456 − Evaporative Emission Control System Leak Detected (Very Small Leak) P.13A-630.

EVAPORATIVE EMISSION SYSTEM LEAK MONITOR

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PROCEDURE 2

.

FUEL TRIM MONITORDTC P0171, P0172, P0174, P0175Drive cycle pattern



• Engine coolant temperature: 80 − 97°C (176 − 207°F)• Atmospheric temperature: −10 to 60°C (14 − 140°F)• Condition of A/T: Selector lever D range

Test procedure

1. Engine: start2. Accelerate until the vehicle speed is 89 − 97 km/h (55 − 60 mph).3. Travel for 30 minutes or more while keeping the vehicle speed at 89 − 97 km/h (55 − 60

mph). (M/T: 5th speed) Carry out one gradual deceleration/acceleration returning to 89 − 97 km/h (55 − 60 mph) within 120 seconds. (During monitor)

4. Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position.5. Confirm that the diagnostic trouble code (DTC) is not output.6. If DTC P0171 is output, refer to DTC P0171 − System too lean (Bank1) P.13A-367.

If DTC P0172 is output, refer to DTC P0172 − System too rich (Bank1) P.13A-375.If DTC P0174 is output, refer to DTC P0174 − System too lean (Bank2) P.13A-381.If DTC P0175 is output, refer to DTC P0175 − System too rich (Bank2) P.13A-389.

AKX01346AKX01346

(3)

(2)

(1)

(4)

30 MINUTES OR MORE89 - 97 km/h (55 - 60 mph)

WITH 120 SECONDS

ENGINE START IGNITION SW-ITCH: "LOCK" (OFF)

DURING MONITOR

97(60)

64(40)

32(20)

0

100

50

0


AKX01346 AB

CALCULATEDLOAD (%)

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PROCEDURE 3

CATALYTIC CONVERTER MONITORDTC P0421, P0431Drive cycle pattern



• Atmospheric temperature: −10°C (14°F) or more• A/C switch: OFF• Condition of A/T: Selector lever D range

Test procedure

1. Engine: start2. Accelerate until the vehicle speed is 72 km/h (45 mph).3. Travel for 300 seconds or more while keeping the vehicle speed at 72 − 97 km/h (45 − 60

mph).4. Decelerate until the vehicle speed is within 56 − 64 km/h (35 − 40 mph).5. While keeping the accelerator pedal opening degree constant, keep the vehicle speed at

56 − 64 km/h (35 − 40 mph) and travel for 90 seconds or more. (During monitor)6. Fully close the throttle and decelerate, and keep the deceleration state for 10 seconds.

Then, quickly accelerate until the vehicle speed reaches 56 − 64 km/h (35 − 40 mph). Then, repeat steps 5 and 6, and complete six monitor sessions.

7. Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position.8. Confirm that the diagnostic trouble code (DTC) is not output.9. If DTC P0421 is output, refer to DTC P0421 − Warm Up Catalyst Efficiency Below

Threshold (Bank 1) P.13A-513.If DTC P0431 is output, refer to DTC P0431 − Warm Up Catalyst Efficiency Below Threshold (Bank 2) P.13A-517.

AKX01347

(3)

(2)

(1)

(4)

(5) (5)

(6) (6) (6)

(5) (5)

(7)

300 SECONDS OR MORE72 - 97 km/h (45 - 60 mph)

PREPARATIONPERIOD

ENGINE START

IGNITION SWITCH: "LOCK"(OFF)

1 STMON-ITOR

FULLDECEL-ERATION

FULLDECEL-ERATION

FULLDECEL-ERATION

2 NDMON-ITOR

6 THMON-ITOR

90 SECONDS OR MORE56 - 64 km/h (35 - 40 mph)97

(60)

64(40)

32(20)

0

100

50

0


AKX01347AB

CALCULATEDLOAD (%)

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. PROCEDURE 4

HEATED OXYGEN SENSOR MONITORDTC P0133, P0139, P0153, P0159Drive cycle pattern



• Engine coolant temperature: 80°C (176°F) or more• Atmospheric temperature: −10°C (14°F) or more• Condition of A/T: Selector lever D range

Test procedure

1. Engine: start2. Accelerate until the vehicle speed is 56 − 64 km/h (35 − 40 mph).3. While keeping the accelerator pedal opening degree constant, keep the vehicle speed at

56 − 64 km/h (35 − 40 mph) and travel for 120 seconds or more. (During monitor)4. Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position.5. Confirm that the diagnostic trouble code (DTC) is not output.6. If DTC P0133 is output, refer to DTC P0133 − O2 Sensor Circuit Slow Response (Bank 1

Sensor 1) P.13A-196. If DTC P0139 is output, refer to DTC P0139 − O2 Sensor Circuit Slow Response (Bank 1 Sensor 2) P.13A-250.If DTC P0153 is output, refer to DTC P0153 − O2 Sensor Circuit Slow Response (Bank 2 Sensor 1) P.13A-296. If DTC P0159 is output, refer to DTC P0159 − O2 Sensor Circuit Slow Response (Bank 2 Sensor 2) P.13A-350.

AKX01348AKX01348

(3)

(2)

(1)

(4)

120 SECONDS OR MORE 56 - 64 km/h (35 - 40 mph)

ENGINE START

IGNITION SWITCH: "LOCK"(OFF)

DURING MONITOR

97(60)

64(40)

32(20)

0

100

50

0


AKX01348 AB

CALCULATEDLOAD (%)

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.

PROCEDURE 5

.

EXHAUST GAS RECIRCULATION (EGR) SYSTEM MONITORDTC P0401Drive cycle pattern



• Engine coolant temperature: 80°C (176°F) or more• Atmospheric temperature: 5°C (41°F) or more• A/C switch: OFF• Condition of A/T: Selector lever D range

Test procedure

1. Engine: start2. Accelerate until the vehicle speed is 56 − 64 km/h (35 − 40 mph).3. Travel for 20 seconds or more while keeping the vehicle speed at 56 − 64 km/h (35 − 40

mph).4. Fully close the throttle from an engine speed of 2,000 − 3,000 r/min, and while keeping

the clutch engaged, decelerate to approximately 900 r/min without applying the brakes. Do not steer the handle or turn the light ON/OFF during this time. (During monitor)

5. Accelerate until the vehicle speed reaches 56 − 64 km/h (35 − 40 mph), and travel for 20 seconds or more. Then, repeat steps 4 and 5 and complete 8 monitor sessions.

6. Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position.7. Confirm that the diagnostic trouble code (DTC) is not output.8. If DTC P0401 is output, refer to DTC P0401 − Exhaust Gas Recirculation Flow Insufficient

detected P.13A-500.

AKX01349

(2)

AKX01349

(3) (5) (5) (5) (5)

(2)

(1)

(4) (4) (4) (4) (4)


20 SECONDS OR MORE

1 STMON-ITOR

7 THMON-ITOR

8 THMON-ITOR

2 NDMON-ITOR

ENGINE START IGNITION SWITCH:"LOCK" (OFF)

FULLDECEL-ERATION

FULLDECEL-ERATION

FULLDECEL-ERATION

FULLDECEL-ERATION

FULLDECEL-ERATION

64(40)

32(20)

0

100

50

0


AKX01349AB

CALCULATEDLOAD (%)

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PROCEDURE 6OTHER MONITOR (Main components, sensors and switches, wire breakage and short circuit)DTC • Main components: P0134, P0154, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0506,

P0507, P1400• Sensors and switches: P0101, P0102, P0106, P0107, P0108, P0111, P0112, P0113, P0116,

P0117, P0118, P0122, P0123, P0125, P0181, P0182, P0183, P0335, P0340, P0461• Wire breakage and short circuit: P0130, P0131, P0132, P0135, P0136, P0137, P0138, P0141,

P0150, P0151, P0152, P0155, P0156, P0157, P0158, P0161, P0201, P0202, P0203, P0204, P0205, P0206, P0403, P0443, P0446

Drive cycle pattern

This monitor [from start to ignition switch "LOCK" (OFF) position] will be completed while driving the vehicle with the following drive cycle pattern. It will take 10 minutes. You must complete this drive twice.NOTE: Drive according to the graph below.


• Engine coolant temperature: 80°C (176°F) or more• Atmospheric temperature: 5°C (41°F) or more• Condition of A/T: Selector lever D range

Test procedure 1. Engine: start2. Accelerate until the vehicle speed is 56 − 64 km/h (35 − 40 mph), and travel for 300 seconds or

more. 3. Return the vehicle to the shop. 4. After stopping the vehicle, continue idling for 300 seconds, and then turn the ignition switch to the

"LOCK" (OFF) position. Moreover, the vehicle should be set to the following conditions for idling.NOTE: Vehicles for Canada, the headlight, taillight, etc. remain lit even when the lighting switch is in "OFF" position but this is no problem for checks.• A/C switch: OFF• Lights and all accessories: OFF• Transmission: P range• Steering wheel: Straightforward position

5. Confirm that the diagnostic trouble code (DTC) is not output.6. If a DTC is displayed, refer to Diagnostic Trouble Code Chart P.13A-26.

AKX01350AKX01350

(3)

(2)

(1)

(4)


ENGINE: IDLINGTRANSMISSION: NEUTRAL300 SECONDS

ENGINE START IGNITION SWITCH:"LOCK" (OFF)

64(40)

32(20)

0

100

50

0


AKX01350 AB

CALCULATEDLOAD (%)

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SYSTEM READINESS TEST STATUS.

PURPOSEThe Readiness function (also referred as I/M Readi-ness or I/M Flags) indicates if a full diagnostic check has been "Completed" (is "Ready") for each non-continuous monitor. Enhanced I/M State Emis-sion Programs will use the Readiness status (Codes) to see if the vehicle is ready for OBD-II testing. "Incomplete" (Not Ready) codes will be one of the triggers for I/M failure..

OVERVIEWThe PCM monitors the following main diagnosis items and records whether the evaluation was com-pleted or is incomplete. The Readiness codes were established for the I/M programs, thereby confirming that the vehicle was not tampered with by erasing the diagnostic trouble code(s) (DTC's) before I/M testing. The Readiness and DTC codes can be reset by dis-connecting the battery or by erasing the codes with a scan tool. For this reason all Readiness codes must read "Complete" before I/M testing.When the monitors run and complete, the scan tool MB991958 (MUT-III Sub Assembly) will record the Readiness Code as " Complete " (General Scan Tools record as " Ready "). When the vehicle is oper-ating normally and the OBD-II Drive Cycle is carried

out, Readiness Code will set as " Complete " on the first drive cycle. If during the first drive cycle a fault is detected then, a second drive is required before the Readiness Code will " Complete. " If the fault is still there, then a DTC will set.

• Catalyst: P0421, P0431• Evaporative system: P0441, P0442, P0455,

P0456• Heated oxygen sensor: P0130, P0131, P0132,

P0133, P0134, P0136, P0137, P0138, P0139, P0150, P0151, P0152, P0153, P0154, P0156, P0157, P0158, P0159

• Heated oxygen sensor heater: P0135, P0141, P0155, P0161

• EGR system: P0401After the Readiness is "Complete," the technician is assured that any DTC's associated with that monitor will be displayed if the system has a problem. That is why some State's I/M programs require the Readi-ness Code as "Complete" before they check for DTC's. NOTE: After a repair is mode for a DTC the techni-cian should drive the OBD-II drive cycle checking that the scan tool MB991958 (MUT-III Sub Assem-bly) records all Readiness as "Complete".

FAIL-SAFE FUNCTION REFERENCE TABLEM1131153000318

When the main sensor malfunctions are detected by the diagnostic test mode, the vehicle is controlled by means of the following defaults.MALFUNCTION ITEM CONTROL CONTENTS DURING MALFUNCTIONVolume airflow sensor • Uses the throttle position sensor signal and engine speed signal (crankshaft

position sensor signal) for basic injector drive time and basic ignition timing from the pre-set mapping.

• Fixes the IAC motor in the appointed position so idle air control is not performed.

Intake air temperature sensor

Controls as if the intake air temperature is 25°C (77°F).

Engine coolant temperature sensor

Controls as if the engine coolant temperature is 80°C (176°F). (This control will be continued until the ignition switch is turned to " LOCK " (OFF) position even though the sensor signal returns to normal.)

Camshaft position sensor Injects fuel simultaneously into all cylinders. (After the ignition switch is turned to " ON " position, the No.1 cylinder top dead center is not detected at all.)

Barometric pressure sensor

Controls as if the barometric pressure is 101 kPa (30 in.Hg).

Knock sensor Switches the ignition timing from ignition timing for high octane to ignition timing for standard octane fuel.

Heated oxygen sensor <front>

Air/fuel ratio closed loop control is not performed.

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Heated oxygen sensor <rear>

Performs the closed loop control of the air/fuel ratio by using only the signal of the heated oxygen sensor (front) installed on the front side of the catalytic converter.

Misfire detection The PCM stops supplying fuel to the cylinder with the highest misfiring rate if a misfiring that could damage the catalytic converter is detected.

Accelerator pedal position sensor (main)

• Detects the amount of the accelerator pedal travel through the use of the accelerator pedal position sensor (sub) signal, but rendering it only as being approximately one-half the normal opening angle.

• Prohibits the operation of the auto-cruise control. • Cuts off fuel when the engine speed exceeds 3,000 r/min.• Suppresses the engine output by stopping the electronically controlled

throttle valve system if the accelerator pedal position sensor (sub) is also malfunctioning.

Accelerator pedal position sensor (sub)

• Detects the amount of the accelerator pedal travel through the use of the accelerator pedal position sensor (main) signal, but rendering it only as being approximately one-half the normal opening angle.

• Prohibits the operation of the auto-cruise control.• Cuts off fuel when the engine speed exceeds 3,000 r/min.• Suppresses the engine output by stopping the electronically controlled

throttle valve system if the accelerator pedal position sensor (main) is also malfunctioning.

Throttle position sensor (main)

• Controls the throttle valve position through the use of the throttle position sensor (sub) signal.

• Renders the amount of accelerator pedal travel as being approximately one-half the normal opening angle.

• Prohibits the operation of the engine speed feedback control.• Prohibits the operation of the auto-cruise control.• Cuts off fuel when the engine speed exceeds 3,000 r/min.• Suppresses the engine output by stopping the electronically controlled

throttle valve system if the throttle position sensor (sub) is also malfunctioning.

Throttle position sensor (sub)

• Controls the throttle valve position through the use of the throttle position sensor (main) signal.


• Prohibits the operation of the auto-cruise control.• Cuts off fuel when the engine speed exceeds 3,000 r/min.• Prohibits the idle speed control from learning.• Suppresses the engine output by stopping the electronically controlled

throttle valve system if the throttle position sensor (main) is also malfunctioning.

Throttle valve position feedback.

• Suppresses the engine output by stopping the electronically controlled throttle valve system.

• Prohibits the operation of the auto-cruise control.• Prohibits the operation of the engine speed feedback control.

MALFUNCTION ITEM CONTROL CONTENTS DURING MALFUNCTION

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DIAGNOSTIC TROUBLE CODE CHARTM1131151000765

Throttle actuator control motor.



Throttle actuator control computer.



Communication between throttle actuator control computer and engine control computer


• Prohibits the operation of the auto-cruise control.• Prohibits the operation of the engine speed feedback control.• Cuts off fuel when the engine speed exceeds 3,000 r/min.

MALFUNCTION ITEM CONTROL CONTENTS DURING MALFUNCTION

DTC NO. DIAGNOSTIC ITEM REFERENCE PAGE

P0101* Volume airflow circuit range/performance problem P.13A-33P0102* Volume airflow circuit low input P.13A-42P0106 Manifold absolute pressure circuit range/performance problem P.13A-51P0107 Manifold absolute pressure circuit low input P.13A-68P0108 Manifold absolute pressure circuit high input P.13A-84P0111* Intake air temperature circuit range/performance problem P.13A-95P0112* Intake air temperature circuit low input P.13A-102P0113* Intake air temperature circuit high input P.13A-107P0116* Engine coolant temperature circuit range/performance problem P.13A-114P0117* Engine coolant temperature circuit low input P.13A-125P0118* Engine coolant temperature circuit high input P.13A-130P0122* Throttle position sensor (main) circuit low input P.13A-138P0123* Throttle position sensor (main) circuit high input P.13A-147P0125* Insufficient coolant temperature for closed loop fuel control P.13A-154P0128 Coolant thermostat (coolant temperature below thermostat regulating

temperature)P.13A-165

P0130 Heated oxygen sensor circuit (bank 1 sensor 1) P.13A-167P0131 Heated oxygen sensor circuit low voltage (bank 1 sensor 1) P.13A-184P0132 Heated oxygen sensor circuit high voltage (bank 1 sensor 1) P.13A-191P0133 Heated oxygen sensor circuit slow response (bank 1 sensor 1) P.13A-196P0134* Heated oxygen sensor circuit no activity detected (bank 1 sensor 1) P.13A-202P0135 Heated oxygen sensor heater circuit (bank 1 sensor 1) P.13A-211P0136 Heated oxygen sensor circuit (bank 1 sensor 2) P.13A-222P0137 Heated oxygen sensor circuit low voltage (bank 1 sensor 2) P.13A-238

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P0138 Heated oxygen sensor circuit high voltage (bank 1 sensor 2) P.13A-245P0139 Heated oxygen sensor circuit slow response (bank 1 sensor 2) P.13A-250P0141 Heated oxygen sensor heater circuit (bank 1 sensor 2) P.13A-256P0150 Heated oxygen sensor circuit (bank 2 sensor 1) P.13A-268P0151 Heated oxygen sensor circuit low voltage (bank 2 sensor 1) P.13A-284P0152 Heated oxygen sensor circuit high voltage (bank 2 sensor 1) P.13A-291P0153 Heated oxygen sensor circuit slow response (bank 2 sensor 1) P.13A-296P0154* Heated oxygen sensor circuit no activity detected (bank 2 sensor 1) P.13A-302P0155 Heated oxygen sensor heater circuit (bank 2 sensor 1) P.13A-311P0156 Heated oxygen sensor circuit (bank 2 sensor 2) P.13A-322P0157 Heated oxygen sensor circuit low voltage (bank 2 sensor 2) P.13A-338P0158 Heated oxygen sensor circuit high voltage (bank 2 sensor 2) P.13A-345P0159 Heated oxygen sensor circuit slow response (bank 2 sensor 2) P.13A-350P0161 Heated oxygen sensor heater circuit (bank 2 sensor 2) P.13A-356P0171 System too lean (bank 1) P.13A-367P0172 System too rich (bank 1) P.13A-375P0174 System too lean (bank 2) P.13A-381P0175 System too rich (bank 2) P.13A-389P0181 Fuel tank temperature sensor circuit range/performance P.13A-396P0182 Fuel tank temperature sensor circuit low input P.13A-406P0183 Fuel tank temperature sensor circuit high input P.13A-412P0201 Injector circuit-Cylinder 1 P.13A-421P0202 Injector circuit-Cylinder 2 P.13A-421P0203 Injector circuit-Cylinder 3 P.13A-421P0204 Injector circuit-Cylinder 4 P.13A-421P0205 Injector circuit-Cylinder 5 P.13A-421P0206 Injector circuit-Cylinder 6 P.13A-421P0222* Throttle position sensor (sub) circuit low input P.13A-433P0223* Throttle position sensor (sub) circuit high input P.13A-442P0300 Random/multiple cylinder misfire detected P.13A-448P0301 Cylinder 1 misfire detected P.13A-455P0302 Cylinder 2 misfire detected P.13A-455P0303 Cylinder 3 misfire detected P.13A-455P0304 Cylinder 4 misfire detected P.13A-455P0305 Cylinder 5 misfire detected P.13A-455P0306 Cylinder 6 misfire detected P.13A-455


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P0325 Knock sensor circuit P.13A-461P0335* Crankshaft position sensor circuit P.13A-467P0340* Camshaft position sensor circuit P.13A-486P0401 Exhaust gas recirculation flow insufficient detected P.13A-500P0403 Exhaust gas recirculation control circuit P.13A-504P0421 Warm up catalyst efficiency below threshold (bank 1) P.13A-513P0431 Warm up catalyst efficiency below threshold (bank 2) P.13A-517P0441 Evaporative emission control system incorrect purge flow P.13A-521P0442 Evaporative emission control system leak detected (Small leak) P.13A-525P0443 Evaporative emission control system purge control valve circuit P.13A-540P0446 Evaporative emission control system vent control P.13A-549P0451 Evaporative emission control system pressure sensor range/performance P.13A-558P0452 Evaporative emission control system pressure sensor low input P.13A-575P0453 Evaporative emission control system pressure sensor high input P.13A-592P0455 Evaporative emission control system leak detected (Gross leak) P.13A-609P0456 Evaporative emission control system leak detected (Very small leak) P.13A-630P0461 Fuel level sensor circuit range/performance P.13A-645P0500* Vehicle speed sensor

malfunction• A/T DTC No. 29 (Vehicle speed sensor

system: Short circuit/open circuitP.23A-41

P0506 Idle control system RPM lower than expected P.13A-651P0507 Idle control system RPM higher than expected P.13A-654P0513 Immobilizer malfunction P.13A-672P0551 Power steering pressure sensor circuit range/performance P.13A-657P0554 Power steering pressure sensor circuit intermittent P.13A-666P0606* Powertrain control module main processor malfunction P.13A-673P0638* Throttle actuator control motor circuit range/ performance problem P.13A-674P0642* Throttle position sensor power supply P.13A-685P0657* Throttle actuator control motor relay circuit malfunction P.13A-687P0660 Intake manifold tuning circuit malfunction P.13A-698P0705 Transmission range

switch circuit malfunction (PRNDL input)

• A/T DTC No. 27 (Transmission range switch system: Open circuit)

• A/T DTC No. 28 (Transmission range switch system: Short circuit)

P.23A-41

P0712 Transmission fluid temperature sensor low input

• A/T DTC No. 16 (Transmission fluid temperature sensor system: Short circuit)

P.23A-41

P0713 Transmission fluid temperature sensor high input

• A/T DTC No. 15 (Transmission fluid temperature sensor system: Open circuit)

P.23A-41


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P0715 Input/turbine speed sensor circuit

• A/T DTC No. 22 (Input shaft speed sensor system: Short circuit/Open circuit)

P.23A-41

P0720 Output speed sensor circuit

• A/T DTC No. 23 (Output shaft speed sensor system: Short circuit/Open circuit)

P.23A-41

P0731 Gear 1 incorrect • A/T DTC No. 41 (1st gear incorrect ratio) P.23A-41P0732 Gear 2 incorrect • A/T DTC No. 42 (2nd gear incorrect ratio) P.23A-41P0733 Gear 3 incorrect • A/T DTC No. 43 (3rd gear incorrect ratio) P.23A-41P0734 Gear 4 incorrect • A/T DTC No. 44 (4th gear incorrect ratio) P.23A-41P0735 Gear 5 incorrect • A/T DTC No. 45 (5th gear incorrect ratio) P.23A-41P0736 Gear R incorrect • A/T DTC No. 46 (Reverse gear incorrect

ratio)P.23A-41

P0741 Torque converter clutch circuit performance or stuck off

• A/T DTC No. 52 (Torque converter clutch solenoid system: Defective system)

P.23A-41

P0742 Torque converter clutch circuit stuck on

• A/T DTC No. 53 (Torque converter clutch solenoid system: Lock-up stuck on)

P.23A-41

P0743 Torque converter clutch circuit electrical

• A/T DTC No. 36 (Torque converter clutch solenoid system: Short circuit/Open circuit)

P.23A-41

P0753 Shift solenoid "A" electrical

• A/T DTC No. 31 (Low and reverse solenoid valve system: Short circuit/Open circuit)

P.23A-41

P0758 Shift solenoid "B" electrical

• A/T DTC No. 32 (Underdrive solenoid valve system: Short circuit/Open circuit)

P.23A-41

P0763 Shift solenoid "C" electrical

• A/T DTC No. 33 (Second solenoid valve system: Short circuit/Open circuit)

P.23A-41

P0768 Shift solenoid "D" electrical

• A/T DTC No. 34 (Overdrive solenoid valve system: Short circuit/Open circuit)

P.23A-41

P0773 Shift solenoid "E" electrical

• A/T DTC No. 35 (Reduction solenoid valve system: Short circuit/Open circuit)

P.23A-41

P1601* Communication malfunction (between PCM and throttle actuator control module)

P.13A-707

P1603* Battery backup circuit malfunction P.13A-708P1751 A/T control relay

malfunction• A/T DTC No. 54 (A/T control relay system:

Short circuit to ground /open circuit)P.23A-41

P2100* Throttle actuator control motor circuit (open ) P.13A-713P2101* Throttle actuator control motor magneto malfunction P.13A-719P2102* Throttle actuator control motor circuit(shorted low) P.13A-724P2103* Throttle actuator control motor circuit (shorted high) P.13A-729P2108* Throttle actuator control processor malfunction P.13A-734P2121* Accelerator pedal position sensor (main) circuit range/performance

problemP.13A-735

P2122* Accelerator pedal position sensor (main) circuit low input P.13A-743P2123* Accelerator pedal position sensor (main) circuit high input P.13A-753


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NOTE: Do not replace the powertrain control module (PCM) until a through terminal check reveals there are no short/open circuits.NOTE: Check that the PCM ground circuit is normal before checking for the cause of the problem.NOTE: After the PCM detects a malfunction, a diagnostic trouble code is recorded the next time the engine is started and the same malfunction is re-detected. However, for items marked with a "*", the diagnostic trouble code is recorded on the first detection of the malfunction.NOTE: Sensor 1 indicates the sensor mounted at a position closest to the engine, and sensor 2 indicates the sensor mounted at the position second closest to the engine.NOTE: Bank 1 indicates the right bank side cylinder, and Bank 2 indicates the left bank side cylinder.

SYMPTOM CHARTM1131151500715

.

NOTE: Check that the PCM ground circuit is normal before checking for the cause of the problem.

P2126* Accelerator pedal position sensor (sub) circuit range/performance problem

P.13A-760

P2127* Accelerator pedal position sensor (sub) circuit low input P.13A-768P2128* Accelerator pedal position sensor (sub) circuit high input P.13A-777P2135* Throttle position sensor (main and sub)range/performance ploblem P.13A-783P2138* Accelerator pedal position sensor (main and sub)range/performance

ploblemP.13A-789

P2227* Barometric pressure circuit range/performance problem P.13A-802P2228* Barometric pressure circuit low input P.13A-808P2229* Barometric pressure circuit high input P.13A-822


TROUBLE SYMPTOMS INSPECTION PROCEDURE

REFERENCE PAGE

Communication with scan tool is impossible

Communication with all systems is not possible 1 P.13A-831Communication with PCM only is not possible 2 P.13A-834

Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) and related parts

The Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) does not illuminate right after the ignition switch is turned to the "ON" position

3 P.13A-837

The Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) remains illuminated and never goes out

4 P.13A-843

Starting Cranks, won't start 5 P.13A-847Starts up and dies 6 P.13A-854Hard starting 7 P.13A-859

Idling stability (improper idling)

Unstable idle (rough idle, hunting) 8 P.13A-865Idle speed is high (improper idle speed) 9 P.13A-869Idle speed is low (improper idle speed) 10 P.13A-870

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.

PROBLEM SYMPTOMS TABLE (FOR YOUR INFORMATION)

Idling stability (engine stalls)

When the engine is cold, it stalls at idle (die out) 11 P.13A-871When the engine is hot, it stalls at idle (die out) 12 P.13A-874The engine stalls when accelerating (pass out) 13 P.13A-878The engine stalls when decelerating 14 P.13A-879

Driving Hesitation, sag or stumble 15 P.13A-881Acceleration shock 16 P.13A-884Deceleration shock 17 P.13A-884Poor acceleration 18 P.13A-885Surge 19 P.13A-889Knocking 20 P.13A-892

Dieseling (Run-on) 21 P.13A-893Too high CO and HC concentration when idling 22 P.13A-893IM240 test failure

Transient, mass emission tailpipe test failure 23 P.13A-896Purge flow test of the evaporative emission canister failure

24 P.13A-901

Pressure test of the evaporative system failure 25 P.13A-902Improper idle speed when the A/C is operating (A/C switch 2 signal) 26 P.13A-903A/C condenser fan is inoperative 27 P.13A-906Power supply system and ignition switch-IG system 28 P.13A-908Fuel pump system 29 P.13A-918Ignition switch-ST system and transmission range switch system 30 P.13A-929Ignition circuit system 31 P.13A-933A/C system 32 P.13A-941Accelerator pedal position switch system 33 P.13A-944

TROUBLE SYMPTOMS INSPECTION PROCEDURE

REFERENCE PAGE

ITEMS SYMPTOMAt Starting Won't start The starter cranks the engine, but there is no combustion within the

cylinders, and the engine won't start.Starts up and dies

The engine starts, but then engine soon stalls.

Hard starting Engine starts after cranking a while.

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Idling stability Hunting Engine speed doesn't remain constant; changes at idle.Rough idle Usually, a judgement can be based upon the movement of the

tachometer pointer, and the vibration transmitted to the steering wheel, shift lever, body, etc.

Incorrect idle speed

The engine doesn't idle at the correct speed.

Engine stall (die out)

The engine stalls when the foot is taken from the accelerator pedal, regardless of whether the vehicle is moving or not.

Engine stall (pass out)

The engine stalls when the accelerator pedal is depressed.

At Driving Hesitation Sag "Hesitation" is the delay in response of the vehicle speed (engine speed). This occurs when the accelerator is depressed in order to accelerate from the speed at which the vehicle is now traveling, or a temporary drop in vehicle speed (engine speed) during such acceleration. Serious hesitation is called "sag".

Poor acceleration

Poor acceleration is inability to obtain an acceleration corresponding to the degree of throttle opening, even though acceleration is smooth. Also the inability to reach maximum speed.

Stumble Engine speed increase is delayed when the accelerator pedal is initially depressed for acceleration.

Shock The feeling of a comparatively large impact or vibration when the engine is accelerated or decelerated.

Surge This is slight acceleration and deceleration feel usually felt during steady, light throttle cruise. Most notable under light loads.

Knocking A sharp sound during driving, which sounds like a hammer striking the cylinder walls. It makes poor driveability.

At Stopped Run on ("Dieseling")

The condition in which the engine continues to run after the ignition switch is turned to the "LOCK" (OFF) position. Also called "dieseling".

ITEMS SYMPTOM

AKX01361

VEHICLESPEED

TIME

NORMALHESITATION

SAG

INITIALACCELE-RATORPEDALDEPRE-SSION

AKX01361AB

AKX01362

VEHICLESPEED

TIME

NORMAL

STUMBLE

INITIALACCEL-ERATORPEDAL DEP-RESSION

IDLING

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DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC P0101: Volume Airflow Circuit Range/Performance Ploblem

1 2 3 4 5 6 7

3 41 2

RE

D

GR

EE

N

WH

ITE

-BLA

CK

SK

Y B

ULE

WH

ITE

-B

LAC

K

WH

ITE

-B

LAC

K

AK201126

B-48

B-22X

MFI RELAY

BATTERY

VOLUME AIRFLOW SENSOR

POWERTRAIN CONTROL MODULE(PCM)

5 V

37

7

88 63

4

3 2

5 3

1 4

Volume Airflow Sensor Circuit

3135363738394041 42 43444546474849 50 515253 545556 57 58

32 33 34

D-133(MU803803)

616566676869707172737475767778798081828384 858687 8889

62 6364

D-134(MU803804)

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.

CIRCUIT OPERATION• The volume airflow sensor power is supplied from

the MFI relay (terminal No. 1), and the ground is provided on the PCM (terminal No. 88).

• 5-volt power is applied to the volume airflow sen-sor output terminal (terminal No. 3) from the PCM (terminal No. 63). The volume airflow sensor gen-erates a pulse signal when the output terminal and ground are opened/closed (opened/short).

.

TECHNICAL DESCRIPTION• While the engine is running, the volume airflow

sensor outputs a pulse signal which corresponds to the volume of air flow.

• The PCM checks whether the frequency of this signal output by the volume airflow sensor while the engine is running is at or above the set value.

• When the throttle position sensor output voltage is low, the PCM causes the power transistor to be "ON" to send an volume airflow sensor reset sig-nal to the volume airflow sensor. In response to the reset signal, the volume airflow sensor resets the filter circuit and improves the ability of the vol-ume airflow sensor to measure the amount of air in a small air intake region.

.

DESCRIPTIONS OF MONITOR METHODS• An abnormal condition is detected in the volume

airflow sensor output through a comparison between the driving load and the output fre-quency of the volume airflow sensor.

.

MONITOR EXECUTION• Continuous

.

MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be normal)

• Throttle position sensor.

AK201039

MFI RELAY

B-22X

AB

CONNECTOR: B-22X

AK201038AH

CONNECTORS: D-133, D-134

PCM

D-134(GR)D-133(GR)

AK200940ADB-48(B)

CONNECTOR: B-48


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DTC SET CONDITIONS <Range/Performance problem − high input>

Logic Flow Chart

Check Conditions• Throttle position sensor output voltage is 1.5 volts

or higher.• Engine speed is higher than 2,000 r/min.

Judgement Criteria• Volume airflow sensor output frequency has con-

tinued to be 60 Hz or lower for 2 seconds..

START

MonitoringConditions

END

No

Yes

No

Yes

No

Yes

Malfunction Good

Output Frequency> = 800Hz

ContinuousFailure for 2secs

AK302693

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DTC SET CONDITIONS <Range/Performance problem − low input>

Logic Flow Chart

Check Conditions• Throttle position sensor output voltage is 2 volts

or lower.• Engine speed is lower than 2,000 r/min.


tinued to be 800 Hz or higher for 2 seconds..

OBD-II DRIVE CYCLE PATTERNRefer to Diagnostic Function − OBD-II Drive Cycle − Procedure 6 − Other Monitor P.13A-4..

TROUBLESHOOTING HINTS (The most likely causes for this code to be set are: )

• Volume airflow sensor failed.• Open or shorted volume airflow sensor circuit,

harness damage, or connector damage.• PCM failed.

DIAGNOSISRequired Special Tools:


START

MONITORINGCONDITIONS

END

NO

YES

NO

YES

NO

YES

MALFUNCTION GOOD

OUTPUT FREQUENCY< =60Hz

CONTINUOUSFAILURE FOR 2 secs

AK302918

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STEP 1. Using scan tool MB991958, check data list item 12: Volume Airflow Sensor.

CAUTIONTo prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before con-necting or disconnecting scan tool MB991958.(1) Connect scan tool MB991958 to the data link connector.(2) Start the engine and run at idle.(3) Set scan tool MB991958 to the data reading mode for item

12, Volume Airflow Sensor.(4) Warm up the engine to normal operating temperature: 80°C

to 95°C (176°F to 203°F).• The standard value during idling should be 10 Hz or

more.• When the engine is revved, the frequency should

increase according to the increase in engine speed.(5) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is the sensor operating properly?

YES : It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points P.00-6.

NO : Go to Step 2.

STEP 2. Measure the reset signal voltage at volume airflow sensor connector B-48 by backprobing.(1) Do not disconnect the connector B-48.(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal No. 7 and ground by backprobing.

• Voltage should be between 6.0 and 9.0 volts.(4) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is the measured voltage between 6.0 and 9.0 volts?

YES : Go to Step 5.NO : Go to Step 3.

AK302970AB

MB991911

MB991824

MB991827

AK200937

345 1267

AB

HARNESS CONNECTOR: COMPONENT SIDE

CONNECTOR: B-48

B-48(B)

AKX01515

6 71 2 3 4 5

AKX01515 AJ

B-48 HARNESS CONNECTOR: HARNESS SIDE

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STEP 3. Check connector B-48 at volume airflow sensor and connector D-133 at PCM for damage.Q: Is the connector in good condition?

YES : Go to Step 4.NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection P.00E-2. Then go to Step 9.

AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AK200939

3132333435363738394041424344454647484952535455565758

5051

AB

CONNECTOR: D-133


PCM

D-133(GR)

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STEP 4. Check for short circuit to ground between volume airflow sensor connector B-48 (terminal No. 7) and PCM connector D-133 (terminal No. 37).Q: Is the harness wire in good condition?

YES : Replace the volume airflow sensor. Then go to Step 9.

NO : Repair it. Then go to Step 9.

AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AK200939

3132333435363738394041424344454647484952535455565758

5051

AB

CONNECTOR: D-133


PCM

D-133(GR)

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STEP 5. Measure the reset signal voltage at volume airflow sensor connector B-48 by backprobing.(1) Do not disconnect the connector B-48.(2) Start the engine and run at idle.


• When the engine idling, voltage should be 1.0 volt or less.

• When the engine speed is 3,000 r/min, voltage should be between 6.0 and 9.0 volts.

(4) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is the voltage normal?


STEP 6. Check connector B-48 at volume airflow sensor and connector D-133 at PCM for damage.Q: Is the connector in good condition?



AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AKX01515

6 71 2 3 4 5

AKX01515 AJ


AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AK200939

3132333435363738394041424344454647484952535455565758

5051

AB

CONNECTOR: D-133


PCM

D-133(GR)

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STEP 7. Check for open circuit and harness damage between volume airflow sensor connector B-48 (terminal No. 7) and PCM connector D-133 (terminal No. 37).Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 9.NO : Repair it. Then go to Step 9.

STEP 8. Replace the volume airflow sensor.(1) Replace the volume airflow sensor.(2) Carry out a test drive with the drive cycle pattern. Refer to

Diagnostic Function − OBD-II Drive Cycle − Procedure 6 − Other Monitor P.13A-4.

(3) Check the diagnostic trouble code (DTC).Q: Is DTC P0101 set?

YES : Replace the PCM. Then go to Step 9.NO : The inspection is complete.

STEP 9. Test the OBD-II drive cycle.(1) Carry out a test drive with the drive cycle pattern. Refer to



YES : Retry the troubleshooting.NO : The inspection is complete.

AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AK200939

3132333435363738394041424344454647484952535455565758

5051

AB

CONNECTOR: D-133


PCM

D-133(GR)

AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

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DTC P0102: Volume Airflow Circuit Low Input

1 2 3 4 5 6 7

3 41 2

RE

D

GR

EE

N

WH

ITE

-BLA

CK

SK

Y B

ULE

WH

ITE

-B

LAC

K

WH

ITE

-B

LAC

K

AK201126

B-48

B-22X

MFI RELAY

BATTERY



5 V

37

7

88 63

4

3 2

5 3

1 4

Volume Airflow Sensor Circuit

3135363738394041 42 43444546474849 50 515253 545556 57 58

32 33 34

D-133(MU803803)

616566676869707172737475767778798081828384 858687 8889

62 6364

D-134(MU803804)

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.

CIRCUIT OPERATION• The volume airflow sensor power is supplied from

the MFI relay (terminal No. 1), and the ground is provided on the PCM (terminal No. 88).

• 5-volt power is applied to the volume airflow sen-sor output terminal (terminal No. 3) from the PCM (terminal No. 63). The volume airflow sensor gen-erates a pulse signal when the output terminal and ground are opened/closed (opened/short).

.

TECHNICAL DESCRIPTION• While the engine is running, the volume airflow

sensor outputs a pulse signal which corresponds to the volume of air flow.

• The PCM checks whether the frequency of this signal output by the volume airflow sensor while the engine is running is at or above the set value.

.

DESCRIPTIONS OF MONITOR METHODS• An open or short circuit is detected while monitor-

ing the output frequency of the volume airflow sensor.

.

MONITOR EXECUTION• Continuous

.



• Not applicable


• Not applicable.

AK201039

MFI RELAY

B-22X

AB

CONNECTOR: B-22X

AK200940ADB-48(B)

CONNECTOR: B-48


AK201038AH


PCM

D-134(GR)D-133(GR)

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DTC SET CONDITIONS

Logic Flow Chart

Check Conditions• Engine speed is higher than 500 r/min.


tinued to be 3.3 Hz or lower for 2 seconds..

OBD-II DRIVE CYCLE PATTERNRefer to Diagnostic Function − OBD-II Drive Cycle − Procedure 6 − Other Monitor P.13A-4.

.


• Volume airflow sensor failed.• Open or shorted volume airflow sensor circuit,




START


END

NO

NO

NO

YES

YES

YES

MALFUNCTION GOOD

OUTPUT FREQUENCY< 3.3Hz

CONTINUOUSFAILURE FOR 2 secs

AK302919

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STEP 1. Using scan tool MB991958, check data list item 12: Volume Airflow Sensor.


12, Volume Airflow Sensor.(4) Warm up the engine to normal operating temperature: 80°C

to 95°C (176°F to 203°F).• The standard value during idling should be 10 Hz or

more.• When the engine is revved, the frequency should

increase according to the increase in engine speed.(5) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is the sensor operating properly?


NO : Go to Step 2.

STEP 2. Measure the power supply voltage at volume airflow sensor connector B-48 by backprobing.(1) Do not disconnect the connector B-48.(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal No.4 and ground by backprobing.

• Voltage should be battery positive voltage.(4) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is battery positive voltage (approximately 12 volts)

present?YES : Go to Step 5.NO : Go to Step 3.

AK302970AB

MB991911

MB991824

MB991827

AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AKX01514

6 71 2 3 4 5

AKX01514AK


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STEP 3. Measure the power supply voltage at volume airflow sensor harness side connector B-48.(1) Disconnect the connector B-48 and measure at the harness

side.(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal No. 4 and ground.• Voltage should be battery positive voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is battery positive voltage (approximately 12 volts)

present?YES : Go to Step 4. NO : Repair harness wire between MFI relay connector

B-22X (terminal No. 1) and volume airflow sensor connector B-48 (terminal No. 4) because of open circuit or short circuit to ground. Then go to Step 13.

STEP 4. Check connector B-48 at the volume airflow sensor for damage.Q: Is the connector in good condition?

YES : Repair harness wire between MFI relay connector B-22X (terminal No. 1) and volume airflow sensor connector B-48 (terminal No. 4) because of harness damage. Then go to Step 13.

NO : Repair or replace it. Refer to GROUP 00E, Harness Connector Inspection P.00E-2. Then go to Step 13.

STEP 5. Check connector B-48 at volume airflow sensor for damage.Q: Is the connector in good condition?



AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AKX01405

B-48 HARNESS CONNECTOR: COMPONENT SIDE

AK

1234567

AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

TSB Revision


STEP 6. Measure the sensor supply voltage at volume airflow sensor harness side connector B-48.(1) Disconnect the connector B-48 and measure at the harness


(3) Measure the voltage between terminal No. 3 and ground.• Voltage should be between 4.8 and 5.2 volts.

(4) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is the measured voltage between 4.8 and 5.2 volts?


STEP 7. Check connector D-134 at PCM for damage.Q: Is the harness connector in good condition?



AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AKX01406AJ


1234567

AK201166

6162636465666768697071

76777879858687

807273

7475818283848889

CONNECTOR: D-134

AB

PCM

D-134(GR)


TSB Revision


STEP 8. Check for open circuit and short circuit to ground between volume airflow sensor connector B-48 (terminal No. 3) and PCM connector D-134 (terminal No. 63).Q: Is the harness wire in good condition?


AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AK201166

6162636465666768697071

76777879858687

807273

7475818283848889

CONNECTOR: D-134

AB

PCM

D-134(GR)


TSB Revision


STEP 9. Check the continuity at volume airflow sensor harness side connector B-48.(1) Disconnect the connector B-48 and measure at the harness

side.

(2) Check for the continuity between terminal No. 5 and ground.

• Should be less than 2 ohms.Q: Does continuity exist?


STEP 10. Check connector D-134 at PCM for damage.Q: Is the connector in good condition?



AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AKX01409

1234567


AL

AK201166

6162636465666768697071

76777879858687

807273

7475818283848889

CONNECTOR: D-134

AB

PCM

D-134(GR)


TSB Revision


STEP 11. Check for open circuit and harness damage between volume airflow sensor connector B-48 (terminal No. 5) and PCM connector D-134 (terminal No. 88).Q: Is the harness wire in good condition?



YES : Replace the volume airflow sensor. Then go to Step 13.


AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AK201166

6162636465666768697071

76777879858687

807273

7475818283848889

CONNECTOR: D-134

AB

PCM

D-134(GR)


AK201166

6162636465666768697071

76777879858687

807273

7475818283848889

CONNECTOR: D-134

AB

PCM

D-134(GR)


TSB Revision






DTC P0106: Manifold Absolute Pressure Circuit Range/Performance Problem

AK302421

GR

EE

N-Y

ELL

OW

BLU

E-Y

ELL

OW

BLA

CK

POWERTRAIN CONTROL MODULE (PCM)

5V

B-28(MU802723)

MANIFOLD ABSOLUTE PRESSURE SENSOR

3 1 2

Manifold Absolute Pressure Sensor Circuit

97 96101

1 2 3

9192 93949596979899100

105

113114 115116117 118119120

106 107108109 110111112

101102103 104

D-135(MU803805)

TSB Revision


.

CIRCUIT OPERATION• A 5-volt voltage is supplied to the manifold abso-

lute pressure sensor power terminal (terminal No. 3) from the PCM (terminal No. 97). The ground terminal (terminal No. 2) is grounded with PCM (terminal No. 96).

• A voltage that is proportional to the intake mani-fold pressure is sent to the PCM (terminal No. 101) from the manifold absolute pressure sensor output terminal (terminal No. 1).

.

TECHNICAL DESCRIPTION• The manifold absolute pressure sensor outputs a

voltage which corresponds to the intake manifold pressure.

• The PCM checks whether this voltage is within a specified range.

.

DESCRIPTIONS OF MONITOR METHODSCompare load value with manifold absolute pressure

sensor output voltage..

MONITOR EXECUTIONContinuous.



• Not applicable


• Engine coolant temperature sensor• Throttle position sensor

.

AK200974

MANIFOLD ABSOLUTEPRESSURE SENSOR

AD

B-28(B)

CONNECTOR: B-28

AK201038AF

CONNECTOR: D-135

PCM

D-135(GR)

TSB Revision


DTC SET CONDITIONS <Range/Performance problem − high input>

Logic Flow Chart

Check Conditions• 8 minutes or more have passed since the starting

sequence was completed, when the engine cool-ant temperature at engine start is 0°C (32°F) or lower.

• Engine speed is lower than 1,500 r/min.

• Throttle position sensor output voltage is lower than 0.8 volt.

Judgement Criteria• Manifold Absolute pressure is 89 kPa (26.3

in.Hg) or higher for 2 seconds..

START

YES

YES

YES

YES

NO

NO

NO

NO


PRESSURE > 89kPa (26.3in.Hg)

CONTINUOUSFAILURE FOR 2secs

MALFUNCTION

END

GOOD

THROTTLE POSITION < =0.8V

AK302433

TSB Revision



Logic Flow Chart



• Engine speed is lower than 1,500 r/min.• Throttle position sensor output voltage is higher

than 3.5 volts.

Judgement Criteria• Manifold Absolute pressure is 45 kPa (8.3 in.Hg)

or lower for 2 seconds.

.

OBD-II DRIVE CYCLE PATTERNRefer to Diagnostic Function − OBD-II Drive Cycle −

Procedure 6 − Other Monitor P.13A-4..


• Manifold absolute pressure sensor failed.• Open or shorted manifold absolute pressure sen-

sor circuit, harness damage or connector dam-age.

• PCM failed.

START

YES

YES

YES

YES

NO

NO

NO

NO


PRESSURE < 45kPa (8.3in.Hg)


MALFUNCTION

END

GOOD

THROTTLE POSITION > =3.5V

AK302920

TSB Revision




STEP 1. Using scan tool MB991958, check data list item 95: Manifold Absolute Pressure Sensor.

CAUTIONTo prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before con-necting or disconnecting scan tool MB991958.(1) Connect scan tool MB991958 to the data link connector.(2) Turn the ignition switch to the "ON" position.(3) Set scan tool MB991958 to the data reading mode for item

95, Manifold Absolute Pressure Sensor.• When altitude is 0 m (0 foot), 101 kPa (29.8 in.Hg).• When altitude is 600 m (1,969 feet), 95 kPa (28.1 in.Hg).• When altitude is 1,200 m (3,937 feet), 88 kPa (26.0

in.Hg).• When altitude is 1,800 m (5,906 feet), 81 kPa (23.9

in.Hg).(4) Start the engine.

• When the engine is idling, 16 − 36 kPa (4.7 − 10.6 in.Hg).

• When the engine is suddenly revved, manifold absolute pressure increases.

(5) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is the sensor operating properly?


NO : Go to Step 2.

AK302970AB

MB991911

MB991824

MB991827

TSB Revision


STEP 2. Measure the sensor output voltage at Manifold Absolute pressure sensor connector B-28 by backprobing.(1) Do not disconnect the connector B-28.(2) Turn the ignition switch to the "ON" position.


• When altitude is 0 m (0 foot), voltage should be 3.7 and 4.3 volts.

• When altitude is 600 m (1,969 feet), voltage should be 3.4 and 4.0 volts.

• When altitude is 1,200 m (3,937 feet), voltage should be 3.2 and 3.8 volts.




AK200975

123

AB


CONNECTOR: B-28

B-28(B)

321

AK203034


AI

TSB Revision


STEP 3. Measure the sensor output voltage at PCM connector D-135 by backprobing.(1) Do not disconnect the connector D-135.(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal No. 101 and ground.• When altitude is 0 m (0 foot), voltage should be 3.7 and

4.3 volts.• When altitude is 600 m (1,969 feet), voltage should be

3.4 and 4.0 volts.• When altitude is 1,200 m (3,937 feet), voltage should be


2.9 and 3.5 volts.(4) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is the voltage normal?


AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK302424

9192 93949596979899100

105

113 115116 118119120

107108 110111112

101102103 104

106

114

D-135 HARNESS CONNECTOR: HARNESS SIDE

AB

106

114

TSB Revision


STEP 4. Check connector B-28 at the manifold absolute pressure sensor and connector D-135 at PCM for damage.Q: Is the connector in good condition?



AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision











NO : Replace the PCM. Then go to Step 18.

AK302970AB

MB991911

MB991824

MB991827

TSB Revision



YES : Repair harness wire between manifold absolute pressure sensor connector B-28 (terminal No. 1) and PCM connector D-135 (terminal No. 101) because of open circuit or harness damage. Then go to Step 18.


STEP 7. Measure the sensor supply voltage at manifold absolute pressure sensor connector B-28 by backprobing.(1) Do not disconnect the connector B-28.(2) Turn the ignition switch to the "ON" position.




AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK200975

123

AB


CONNECTOR: B-28

B-28(B)

321

AK203036

B-28 HARNESSCONNECTOR:HARNESS SIDE

AI

TSB Revision


STEP 8. Measure the sensor supply voltage at PCM connector D-135 by backprobing.(1) Do not disconnect the connector D-135.(2) Turn the ignition switch to the "ON" position.




AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK302427

9192 93949596979899100

105

113 115116 118119120

107108 110111112

101102103 104

109

117


AB

109

117

TSB Revision





AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 11. Check for short circuit to ground between manifold absolute pressure sensor connector B-28 (terminal No. 3) and PCM connector D-135 (terminal No. 97).Q: Is the harness wire in good condition?


AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 12. Measure the ground voltage at manifold absolute pressure sensor connector B-28 by backprobing.(1) Do not disconnect the connector B-28.(2) Turn the ignition switch to the "ON" position.


• Voltage should be 0.5 volt or less.(4) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is the measured voltage 0.5 volt or less?





AK200975

123

AB


CONNECTOR: B-28

B-28(B)

321

AK203038


AI

AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 14. Check for harness damage between manifold absolute pressure sensor connector B-28 (terminal No. 2) and PCM connector D-135 (terminal No. 96).Q: Is the harness wire in good condition?


STEP 15. Check connector B-28 at manifold absolute pressure sensor for damage.Q: Is the connector in good condition?



AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK200975

123

AB


CONNECTOR: B-28

B-28(B)

TSB Revision





STEP 17. Check for short circuit to ground and harness damage between manifold absolute pressure sensor connector B-28 (terminal No. 1) and PCM connector D-135 (terminal No. 101).Q: Is the harness wire in good condition?

YES : Replace the manifold absolute pressure sensor. Then go to Step 18.


AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision






DTC P0107: Manifold Absolute Pressure Circuit Low Input

AK302421

GR

EE

N-Y

ELL

OW

BLU

E-Y

ELL

OW

BLA

CK


5V

B-28(MU802723)


3 1 2


97 96101

1 2 3

9192 93949596979899100

105

113114 115116117 118119120

106 107108109 110111112

101102103 104

D-135(MU803805)

TSB Revision


.


lute pressure sensor power terminal (terminal No. 3) from the PCM (terminal No. 97). The ground terminal (terminal No. 2) is grounded with PCM (terminal No. 96).


.




.

DESCRIPTIONS OF MONITOR METHODSManifold absolute pressure sensor output voltage is

out of specified range..




• Not applicable


• Not applicable.

AK200974


AD

B-28(B)

CONNECTOR: B-28

AK201038AF

CONNECTOR: D-135

PCM

D-135(GR)

TSB Revision


DTC SET CONDITIONS

Logic Flow Chart



• Throttle position sensor output voltage is higher than 1.25 volts.

Judgement Criteria• Manifold Absolute pressure is 5 kPa (1.4 in.Hg)

or lower for 2 seconds.

.



TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)

• Manifold absolute pressure sensor failed.• Open or shorted manifold absolute pressure sen-

sor circuit, harness damage or connector dam-age.

• PCM failed.

YES

YES

YES

YES

NO

NO

NO

NO


PRESSURE < 5.0kPa (1.4in.Hg)



MALFUNCTION

END

GOOD

START

AK302688

TSB Revision






95, Manifold absolute Pressure Sensor.• When altitude is 0 m (0 foot), 101 kPa (29.8 in.Hg).• When altitude is 600 m (1,969 feet), 95 kPa (28.1 in.Hg).• When altitude is 1,200 m (3,937 feet), 88 kPa (26.0







NO : Go to Step 2.

AK302970AB

MB991911

MB991824

MB991827

TSB Revision


STEP 2. Measure the sensor output voltage at Manifold Absolute pressure sensor connector B-28 by backprobing.(1) Do not disconnect the connector B-28.(2) Turn the ignition switch to the "ON" position.








AK200975

123

AB


CONNECTOR: B-28

B-28(B)

321

AK203034


AI

TSB Revision


STEP 3. Measure the sensor output voltage at PCM connector D-135 by backprobing.(1) Do not disconnect the connector D-135.(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal No. 101 and ground.• When altitude is 0 m (0 foot), voltage should be 3.7 and

4.3 volts.• When altitude is 600 m (1,969 feet), voltage should be



2.9 and 3.5 volts.(4) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is the voltage normal?


AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK302424

9192 93949596979899100

105

113 115116 118119120

107108 110111112

101102103 104

106

114


AB

106

114

TSB Revision





AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision












AK302970AB

MB991911

MB991824

MB991827

TSB Revision









AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK200975

123

AB


CONNECTOR: B-28

B-28(B)

321

AK203036


AI

TSB Revision


STEP 8. Measure the sensor supply voltage at PCM connector D-135 by backprobing.(1) Do not disconnect the connector D-135.(2) Turn the ignition switch to the "ON" position.




AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK302427

9192 93949596979899100

105

113 115116 118119120

107108 110111112

101102103 104

109

117


AB

109

117

TSB Revision





AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 11. Check for short circuit to ground between manifold absolute pressure sensor connector B-28 (terminal No. 3) and PCM connector D-135 (terminal No. 97).Q: Is the harness wire in good condition?


AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision









AK200975

123

AB


CONNECTOR: B-28

B-28(B)

321

AK203038


AI

AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 14. Check for harness damage between manifold absolute pressure sensor connector B-28 (terminal No. 2) and PCM connector D-135 (terminal No. 97).Q: Is the harness wire in good condition?





AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK200975

123

AB


CONNECTOR: B-28

B-28(B)

TSB Revision





STEP 17. Check for short circuit to ground and harness damage between manifold absolute pressure sensor connector B-28 (terminal No. 1) and PCM connector D-135 (terminal No. 101).Q: Is the harness wire in good condition?



AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision






DTC P0108: Manifold Absolute Pressure Circuit High Input

AK302421

GR

EE

N-Y

ELL

OW

BLU

E-Y

ELL

OW

BLA

CK


5V

B-28(MU802723)


3 1 2


97 96101

1 2 3

9192 93949596979899100

105

113114 115116117 118119120

106 107108109 110111112

101102103 104

D-135(MU803805)

TSB Revision


.


lute pressure sensor power terminal (terminal No. 3) from PCM (terminal No. 97). The ground termi-nal (terminal No. 2) is grounded with PCM (termi-nal No. 96).


.




.

DESCRIPTIONS OF MONITOR METHODSManifold absolute pressure sensor output voltage is





• Not applicable


• Not applicable.

AK200974


AD

B-28(B)

CONNECTOR: B-28

AK201038AF

CONNECTOR: D-135

PCM

D-135(GR)

TSB Revision


DTC SET CONDITIONS

Logic Flow Chart



Judgement Criteria• Manifold Absolute pressure is 117 kPa (34.6

in.Hg) or higher for 2 seconds..




• Manifold Absolute pressure sensor failed.• Open manifold absolute pressure sensor circuit,

or connector damage.• PCM failed.

YES

YES

YES

YES

NO

NO

NO

NO


PRESSURE < 5.0kPa (1.4in.Hg)



MALFUNCTION

END

GOOD

START

AK302688

TSB Revision













NO : Go to Step 2.

AK302970AB

MB991911

MB991824

MB991827

TSB Revision


STEP 2. Measure the sensor output voltage at manifold absolute pressure sensor connector B-28 by backprobing.(1) Do not disconnect the connector B-28.(2) Turn the ignition switch to the "ON" position.








AK200975

123

AB


CONNECTOR: B-28

B-28(B)

321

AK203034


AI

TSB Revision





AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision
















AK302970AB

MB991911

MB991824

MB991827

AK200975

123

AB


CONNECTOR: B-28

B-28(B)

321

AK203036


AI

TSB Revision



YES : Replace the PCM. Then go to Step 12.NO : Repair or replace it. Refer to GROUP 00E, Harness






AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK200975

123

AB


CONNECTOR: B-28

B-28(B)

321

AK203038


AI

TSB Revision





AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 9. Check for open circuit between manifold absolute pressure sensor connector B-28 (terminal No. 2) and PCM connector D-135 (terminal No. 96).Q: Is the harness wire in good condition?





AK200975

123

AB


CONNECTOR: B-28

B-28(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK200975

123

AB


CONNECTOR: B-28

B-28(B)

TSB Revision









AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


DTC P0111: Intake Air Temperature Circuit Range/Performance Problem

.

CIRCUIT OPERATION• Approximately 5 volts are applied to the intake air

temperature sensor output terminal (terminal No. 6) from the PCM (terminal No. 99) via the resistor in the PCM. The ground terminal (terminal No. 5) is grounded with PCM (terminal No. 88).

• The intake air temperature sensor is a negative temperature coefficient type of resistor. When the intake air temperature rises, the resistance decreases.

• The intake air temperature sensor output voltage increases when the resistance increases and decreases when the resistance decreases.

.

SK

Y B

ULE

AK201128

RE

D-B

LUE

INTAKE AIR TEMPERATURE SENSOR(INCORPORATED IN VOLUME AIRFLOW SENSOR)


5 V

99

5

88

6

1 2 3 4 5 6 7

B-48

Intake Air Temperature Sensor Circuit

9192 93949596979899100

105

113114 115116117 118119120

106 107108109 110111112

101102103 104

D-135(MU803805)

616566676869707172737475767778798081828384 858687 8889

62 6364

D-134(MU803804)

AK200940AC

CONNECTOR: B-48

INTAKE AIRTEMPERATURESENSOR

B-48(B)AK201038AK


PCM

D-134(GR) D-135(GR)

TSB Revision


TECHNICAL DESCRIPTION• The intake air temperature sensor converts the

intake air temperature to a voltage.• The PCM checks whether this voltage is within a

specified range..

DESCRIPTIONS OF MONITOR METHODSIntake air temperature sensor output voltage does

not change when specified go/stop operations are repeated.

.

MONITOR EXECUTIONContinuous

.



• Not applicable


• Not applicable.

DISC SET CONDITIONS

Logic Flow Chart

Check Conditions• Engine coolant temperature is higher than 76°C

(169°F).• Repeat 5 or more times: drive*1, stop*2.

Drive*1: vehicle speed higher than 50 km/h (31 mph) lasting a total of more than 60 seconds.

Stop*2: vehicle speed lower than 1.5 km/h (1 mph) lasting more than 30 seconds.

END

YES

NO

NO

NO

START

MONITORINGCONDITION

YES

MALFUNCTION

GOOD

F1: COUNTER OF A DRIVING STATE.F2: COUNTER OF A STOP STATE.

INTAKE AIR TEMP.CHANGES

GO/STOP OPERATIONFOR SPECIFIED TIMES

YES

AK302921

TSB Revision


Judgement Criteria• Changes in the intake air temperature is lower

than 1°C (1.8°F)..


Procedure 6 − Other Monitor P.13A-4.

.


• Intake air temperature sensor failed.• Open intake air temperature sensor circuit, har-

ness damage, or connector damage.• PCM failed.



STEP 1. Using scan tool MB991958, check data list item 13: Intake Air Temperature Sensor.

CAUTIONTo prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before con-necting or disconnecting scan tool MB991958.(1) Connect scan tool MB991958 to the data link connector.(2) Remove the air intake hose from the volume airflow sensor.(3) Turn the ignition switch to the "ON" position.(4) Set scan tool MB991958 to the data reading mode for item

13, Intake Air Temperature Sensor.

(5) Heating the sensor using a hair drier.• The indicated temperature increases.

NOTE: Do not allow it to increase over 80°C (176°F).(6) Turn the ignition switch to the "LOCK" (OFF) position.(7) Attach the air intake hose.Q: Is the sensor operating properly?


NO : Go to Step 2.

AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AKX01621 AB


TSB Revision


STEP 2. Check the intake air temperature sensor.(1) Disconnect the intake air temperature sensor connector

B-48

(2) Measure the resistance between intake air temperature sensor side connector terminal No. 5 and No. 6.

(3) Measure resistance while heating the sensor using a hair drier.

Standard value:13 − 17 kΩ [at −20°C (−4°F)]5.3 − 6.7 kΩ [at 0°C (32°F)]2.3 − 3.0 kΩ [at 20°C (68°F)]1.0 − 1.5 kΩ [at 40°C (104°F)]0.56 − 0.76 kΩ [at 60°C (140°F)]0.30 − 0.42 kΩ [at 80°C (176°F)]

Q: Is the resistance at the standard value?YES : Go to Step 3.NO : Replace the volume airflow sensor. Then go to Step 9.

STEP 3. Check connector B-48 at the intake air temperature sensor for damage.Q: Is the connector in good condition?



AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AK000319AB

1 2 3 4 5 6 7

INTAKE AIR TEMPERATURESENSOR SIDE CONNECTOR

AKX01621 AB


AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

TSB Revision


STEP 4. Check the continuity at intake air temperature sensor harness side connector B-48.(1) Disconnect the connector B-48 and measure at the harness

side.







AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AKX01409

1234567


AL

AK201166

6162636465666768697071

76777879858687

807273

7475818283848889

CONNECTOR: D-134

AB

PCM

D-134(GR)


TSB Revision


STEP 6. Check for open circuit and harness damage between intake air temperature sensor connector B-48 (terminal No. 5) and PCM connector D-134 (terminal No. 88).Q: Is the harness wire in good condition?





AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AK201166

6162636465666768697071

76777879858687

807273

7475818283848889

CONNECTOR: D-134

AB

PCM

D-134(GR)


AK201166

6162636465666768697071

76777879858687

807273

7475818283848889

CONNECTOR: D-134

AB

PCM

D-134(GR)


TSB Revision


STEP 8. Check for open circuit and harness damage between intake air temperature sensor connector B-48 (terminal No. 6) and PCM connector D-135 (terminal No. 99).Q: Is the harness wire in good condition?






AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


DTC P0112: Intake air temperature Circuit Low Input

.





.

SK

Y B

ULE

AK201128

RE

D-B

LUE



5 V

99

5

88

6

1 2 3 4 5 6 7

B-48


9192 93949596979899100

105

113114 115116117 118119120

106 107108109 110111112

101102103 104

D-135(MU803805)

616566676869707172737475767778798081828384 858687 8889

62 6364

D-134(MU803804)

AK200940AC

CONNECTOR: B-48


B-48(B)AK201038AK


PCM

D-134(GR) D-135(GR)

TSB Revision




specified range..

DESCRIPTIONS OF MONITOR METHODSIntake air temperature sensor output voltage is out of

specified range..


.



• Not applicable


• Not applicable.

DTC SET CONDITIONS

Logic Flow Chart

Check Conditions• 2 seconds or more have passed since the start-

ing sequence was completed.

Judgement Criteria• Intake air temperature sensor output voltage has

continued to be 0.2 volt or lower [corresponding to an air intake temperature of 115°C (239°F) or higher] for 2 seconds.

.

START

OUTPUT VOLTAGE < 0.2V

END

NO

NO

NO

YESYES

YES

MALFUNCTION GOOD


OUTPUT VOLTAGE > 4.6V


NO

YES

AK302922

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• Intake air temperature sensor failed.• Shorted intake air temperature sensor circuit,






13, Intake Air Temperature Sensor.• The intake air temperature and temperature shown with

the scan tool should approximately match.(4) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is the sensor operating properly?


NO : Go to Step 2.




AK302970AB

MB991911

MB991824

MB991827

AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

TSB Revision



B-48.


• There should be continuity. (0.30 − 20 kΩ)Q: Is the measured resistance between 0.30 and 20 kΩ?

YES : Go to Step 4.NO : Replace the volume airflow sensor. Then go to Step 6.

STEP 4. Check for short circuit to ground between intake air temperature sensor connector B-48 (terminal No.6) and PCM connector D-135 (terminal No. 99).Q: Is the harness wire in good condition?

YES : Go to Step 5.NO : Repair it. Then go to Step 6.

AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AK000319AB

1 2 3 4 5 6 7


AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision






Diagnostic Function - OBD-II Drive Cycle - Procedure 6 − Other Monitor P.13A-4.



AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


DTC P0113: Intake air temperature Circuit High Input

.





.

SK

Y B

ULE

AK201128

RE

D-B

LUE



5 V

99

5

88

6

1 2 3 4 5 6 7

B-48


9192 93949596979899100

105

113114 115116117 118119120

106 107108109 110111112

101102103 104

D-135(MU803805)

616566676869707172737475767778798081828384 858687 8889

62 6364

D-134(MU803804)

AK200940AC

CONNECTOR: B-48


B-48(B)AK201038AK


PCM

D-134(GR) D-135(GR)

TSB Revision




specified range..

DESCRIPTIONS OF MONITOR METHODSIntake air temperature sensor output voltage is out of

specified range..


.



• Not applicable


• Not applicable.

DTC SET CONDITIONS

Logic Flow Chart

Check Conditions• 2 seconds or more have passed since the start-

ing sequence was completed.

Judgement Criteria• Intake air temperature sensor output voltage has

continued to be 4.6 volts or higher [corresponding to an air intake temperature of −40°C (−40°F) or lower] for 2 seconds.

.

START


END

NO

NO

NO

YESYES

YES

MALFUNCTION GOOD




NO

YES

AK302922

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• Intake air temperature sensor failed.• Open intake air temperature sensor circuit, har-






13, Intake Air Temperature Sensor.• The intake air temperature and temperature shown with

the scan tool should approximately match.(4) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is the sensor operating properly?


NO : Go to Step 2.




AK302970AB

MB991911

MB991824

MB991827

AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

TSB Revision



B-48.


• There should be continuity. (0.30 − 20 kΩ)Q: Is the measured resistance between 0.30 and 20 kΩ?

YES : Go to Step 4.NO : Replace the volume airflow sensor. Then go to Step

11.

STEP 4. Check the sensor supply voltage at intake air temperature sensor harness side connector B-48.(1) Disconnect the connector B-48 and measure at the harness





AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AK000319AB

1 2 3 4 5 6 7


AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AKX01408AJ


1234567

TSB Revision


STEP 5. Check the sensor supply voltage at PCM connector D-135 by backprobing.(1) Do not disconnect the PCM connector D-135.(2) Disconnect the intake air temperature sensor connector

B-48.(3) Turn the ignition switch to the "ON" position.





YES : Repair harness wire between intake air temperature sensor connector B-48 (terminal No. 6) and PCM connector D-135 (terminal No. 99) because of open circuit. Then go to Step 11.


AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK201394

9192 93949596979899100101102103 104105106 107108109 110111112113114 115116117 118119120


AB

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision





STEP 8. Check the continuity at intake air temperature sensor harness side connector B-48.

(1) Disconnect the connector B-48 and measure at the harness side.



YES : Replace the PCM. Then go to Step 11.NO : Go to Step 9.

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AKX01409

1234567


AL

TSB Revision





STEP 10. Check for open circuit between intake air temperature sensor connector B-48 (terminal No. 5) and PCM connector D-134 (terminal No. 88).Q: Is the harness wire in good condition?


AK201166

6162636465666768697071

76777879858687

807273

7475818283848889

CONNECTOR: D-134

AB

PCM

D-134(GR)


AK200937

345 1267

AB


CONNECTOR: B-48

B-48(B)

AK201166

6162636465666768697071

76777879858687

807273

7475818283848889

CONNECTOR: D-134

AB

PCM

D-134(GR)


TSB Revision






DTC P0116: Engine Coolant Temperature Circuit Range/Performance Problem

YE

LLO

W-G

RE

EN

BLA

CK

AK302923

ENGINE COOLANTTEMPERATURE SENSOR


5 V

98

2

B-37(MU802406)

96

1

Engine Coolant Temperature Sensor Circuit

1 2

9192 93949596979899100

105

113114 115116117 118119120

106 107108109 110111112

101102103 104

D-135(MU803805)

TSB Revision


.

CIRCUIT OPERATION• 5-volt voltage is applied to the engine coolant


• The engine coolant temperature sensor is a neg-ative temperature coefficient type of resistor. It has the characteristic that when the engine cool-ant temperature rises the resistance decreases.

• The engine coolant temperature sensor output voltage increases when the resistance increases and decreases when the resistance decreases.

.

TECHNICAL DESCRIPTION• The engine coolant temperature sensor converts

the engine coolant temperature to a voltage and outputs it.


.

DESCRIPTIONS OF MONITOR METHODSEngine coolant temperature sensor output voltage

does not change for specified period when engine coolant temperature sensor output volt-age at engine start is over 7°C (45°F).

.

MONITOR EXECUTIONOnce per driving cycle.



• Not applicable


• Volume airflow sensor• Engine coolant temperature sensor• Intake air temperature sensor

.

AK200942


AK200942AB

B-37(B)

CONNECTOR: B-37

AK201038AF

CONNECTOR: D-135

PCM

D-135(GR)

TSB Revision


DTC SET CONDITIONS

Logic Flow Chart

Check Conditions• Engine coolant temperature was 7°C (45°F) or

more immediately before the engine was stopped at the last drive.

• Engine coolant temperature was 7°C (45°F) or more when the engine started.

Judgement Criteria• Engine coolant temperature fluctuates within 1°C

(1.8°F) after 5 minutes have passed since the engine was started.

• However, time is not counted if any of the follow-ing conditions are met.1. Intake air temperature is 60°C (140°F) or

more.2. Volume airflow sensor output frequency is 70

Hz or less.3. During fuel shut-off operation.

• The PCM monitors for this condition once during the drive cycle.

.

START

END

YES

NO

NO

YES

MALFUNCTION GOOD

300secs HAVE PASSED?

|dT| < 1˚C(1.8˚F)

MONITORING CONDITIONS?

START MEASURING THE MINIMUM AND MAXIMUMTEMPERATURE FROM ENGINE START

CALCULATE THE DIFFERENCE OF THE MINIMUM AND THE MAXIMUM TEMPERATURE FROM ENGINE START;dT

YES

NO

AK302924

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• Engine coolant temperature sensor failed.• Harness damage or connector damage.• PCM failed.



STEP 1. Using scan tool MB991958, check data list item 21: Engine Coolant Temperature Sensor.


21, Engine Coolant Temperature Sensor.• The engine coolant temperature and temperature

shown with the scan tool should approximately match.(4) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is the sensor operating properly?


NO : Go to Step 2.AK302970AB

MB991911

MB991824

MB991827

TSB Revision


STEP 2. Check the sensor output voltage at engine coolant temperature sensor connector B-37 by backprobing.(1) Do not disconnect the connector B-37.(2) Turn the ignition switch to the "ON" position.


• When engine coolant temperature is −20°C (−4°F), volt-age should be between 3.9 and 4.5 volts.

• When engine coolant temperature is 0°C (32°F), voltage should be between 3.2 and 3.8 volts.

• When engine coolant temperature is 20°C (68°F), volt-age should be between 2.3 and 2.9 volts.



• When engine coolant temperature is 80°C (176°F), volt-age should be between 0.3 and 0.9 volt.



STEP 3. Check connector B-37 at the engine coolant temperature sensor for damage.Q: Is the connector in good condition?



AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AK201572

21

AB


AK200943

12

AB


CONNECTOR: B-37

B-37(B)

TSB Revision








STEP 5. Check connector B-37 at engine coolant temperature sensor for damage.Q: Is the connector in good condition?



AK302970AB

MB991911

MB991824

MB991827

AK200943

12

AB


CONNECTOR: B-37

B-37(B)

TSB Revision


STEP 6. Measure the sensor supply voltage at engine coolant temperature sensor harness side connector B-37.(1) Disconnect the connector B-37 and measure at the harness








AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AK000234 AL

2 1


AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 8. Check the continuity at engine coolant temperature sensor harness side connector B-37.(1) Disconnect the connector B-37 and measure at the harness

side.







AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AK000235


12

AL

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 10. Check for harness damage between engine coolant temperature sensor connector B-37 (terminal No. 2) and PCM connector D-135 (terminal No. 96).Q: Is the harness wire in good condition?


AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 11. Check the engine coolant temperature sensor.(1) Disconnect the engine coolant temperature sensor

connector B-37.(2) Remove the engine coolant temperature sensor.

(3) With the temperature sensing portion of engine coolant temperature sensor immersed in hot water, check resistance.

Standard value:14 − 17 kΩ [at −20°C (−4°F)]5.1 − 6.5 kΩ [at 0°C (32°F)]2.1 − 2.7 kΩ [at 20°C (68°F)]0.9 − 1.3 kΩ [at 40°C (104°F)]0.48 − 0.68kΩ [at 60°C (140°F)]0.26 − 0.36 kΩ [at 80°C (176°F)]

(4) Apply 3M AAD part number 8731 or equivalent on the screw section of the engine coolant temperature sensor.

(5) Install the engine coolant temperature sensor, and tighten to the specified torque.

Tightening torque: 29 ± 10 N⋅m (22 ± 7 ft-lb)Q: Is the resistance at the standard value?

YES : Go to Step 12.NO : Replace the engine coolant temperature sensor. Then

go to Step 14.




AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AKX01622

AKX01623 AB

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision








AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


DTC P0117: Engine Coolant Temperature Circuit Low Input

.





.

YE

LLO

W-G

RE

EN

BLA

CK

AK302923



5 V

98

2

B-37(MU802406)

96

1


1 2

9192 93949596979899100

105

113114 115116117 118119120

106 107108109 110111112

101102103 104

D-135(MU803805)

AK200942


AK200942AB

B-37(B)

CONNECTOR: B-37

AK201038AF

CONNECTOR: D-135

PCM

D-135(GR)

TSB Revision





.

DESCRIPTIONS OF MONITOR METHODSEngine coolant temperature sensor output voltage is



.



• Not applicable


• Not applicable.

DTC SET CONDITIONS

Logic Flow Chart

Check Conditions• 2 seconds or more have passed since the engine

starting sequence was completed.

START



END

NO

NO

NO

YESYES

YES

MALFUNCTION GOOD


MONITORINGCONDITIONS?

NO

YES

AK302925

TSB Revision


Judgement Criteria• Engine coolant temperature sensor output volt-

age has continued to be 0.1 volt or lower [corre-sponding to coolant temperature of 140°C (284°F) or higher] for 2 seconds.

.



.


• Engine coolant temperature sensor failed.• Shorted engine coolant temperature sensor cir-

cuit, harness damage, or connector damage.• PCM failed.








NO : Go to Step 2.




AK302970AB

MB991911

MB991824

MB991827

AK200943

12

AB


CONNECTOR: B-37

B-37(B)

TSB Revision


STEP 3. Check for short circuit to ground between engine coolant temperature sensor connector B-37 (terminal No. 1) and PCM connector D-135 (terminal No. 98).Q: Is the harness wire in good condition?





AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision









YES : Replace the PCM. Then go to Step 6.NO : Replace the engine coolant temperature sensor. Then

go to Step 6.





AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AKX01622

AKX01623 AB

TSB Revision


DTC P0118: Engine Coolant Temperature Circuit High Input

.





.

YE

LLO

W-G

RE

EN

BLA

CK

AK302923



5 V

98

2

B-37(MU802406)

96

1


1 2

9192 93949596979899100

105

113114 115116117 118119120

106 107108109 110111112

101102103 104

D-135(MU803805)

AK200942


AK200942AB

B-37(B)

CONNECTOR: B-37

AK201038AF

CONNECTOR: D-135

PCM

D-135(GR)

TSB Revision





.

DESCRIPTIONS OF MONITOR METHODSEngine coolant temperature sensor output voltage is



.



• Not applicable


• Not applicable.

DTC SET CONDITIONS

Logic Flow Chart

Check Conditions• 2 seconds or more have passed since the engine

starting sequence was completed.

START



END

NO

NO

NO

YESYES

YES

MALFUNCTION GOOD



NO

YES

AK302925

TSB Revision


Judgement Criteria• Engine coolant temperature sensor output volt-

age has continued to be 4.6 volts or higher [cor-responding to coolant temperature of −45°C (−49°F) or lower] for 2 seconds.

.



.


• Engine coolant temperature sensor failed.• Open engine coolant temperature sensor circuit,









NO : Go to Step 2.




AK302970AB

MB991911

MB991824

MB991827

AK200943

12

AB


CONNECTOR: B-37

B-37(B)

TSB Revision







STEP 4. Measure the sensor supply voltage at PCM connector D-135 by backprobing.(1) Do not disconnect the PCM connector D-135.(2) Disconnect the engine coolant temperature sensor

connector B-37.(3) Turn the ignition switch to the "ON" position.




AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AK000234 AL

2 1


AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK201395

9192 93949596979899100101102103 104

105106 107108109 110111112

113114 115116117 118119120

AB


TSB Revision



YES : Repair harness wire between engine coolant temperature sensor connector B-37 (termial No. 1) and PCM connector D-135 (termial No. 98) because of open circuit. Then go to Step 11.





AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 7. Check the continuity at engine coolant temperature sensor harness side connector B-37.

(1) Disconnect the connector B-37 and measure at the harness side.







AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AK000235


12

AL

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 9. Check for open circuit between engine coolant sensor connector B-37 (terminal No. 2) and PCM connector D-135 (terminal No. 96).Q: Is the harness wire in good condition?


AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision









YES : Replace the PCM. Then go to Step 11.NO : Replace the engine coolant temperature sensor. Then

go to Step 11.





AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AKX01622

AKX01623 AB

TSB Revision


DTC P0122: Throttle Position Sensor (Main) Circuit Low Input

.

CIRCUIT OPERATION• A 5-volt power supply is applied on the throttle

position sensor (main) power terminal (terminal No. 2) from the PCM (terminal No. 106).The ground terminal (terminal No. 4) is grounded with PCM (terminal No. 105).

• When the throttle valve shaft is turned from the idle position to the fully opened position, the resistance between the throttle position sensor (main) output terminal (terminal No. 1) and ground terminal (terminal No. 4) will increase according to the rotation.

.

AK201130

RE

D

WH

ITE

BLA

CK

B-05

5 V

106

2

THROTTLEPOSITIONSENSOR(MAIN)


115 105

1 4

Throttle Position Sensor (Main) Circuit

9192 93949596979899100

105

113114 115116117 118119120

106 107108109 110111112

101102103 104

D-135(MU803805)

61 2 3 4 5

AK201173

THROTTLE POSITION SENSOR

AB

B-05(B)

CONNECTOR: B-05

AK201038AF

CONNECTOR: D-135

PCM

D-135(GR)

TSB Revision


TECHNICAL DESCRIPTION• The throttle position sensor (main) outputs volt-

age which corresponds to the throttle valve open-ing angle.

• The PCM checks whether the voltage is within a specified range.

.

DESCRIPTIONS OF MONITOR METHODSthrottle position sensor (main) output voltage is out of

specified range..


.



• Not applicable


• Not applicable.

DTC SET CONDITIONS

Logic Flow Chart

.

Check Condition• Ignition switch "ON" position.

Judgement Criteria• Throttle position sensor (main) output voltage

should be 0.35 volt or less for 0.5 second.

START

YES

YES

YES

NO

NO

NO

CONTINUOUSFAILURE FOR 0.5sec

MALFUNCTION

END

GOOD

OUTPUT VOLTAGE< =0.35V

OUTPUT VOLTAGE > =4.8V

AK302926

TSB Revision


.

OBD-II DRIVE CYCLE PATTERNNone..


• Throttle position sensor failed.• Open or shorted throttle position sensor (main)

circuit, harness damage, or connector damage.• PCM failed.



• MB991658: Test Harness Set

STEP 1. Using scan tool MB991958, check data list item 79: Throttle Position Sensor (main).

CAUTIONTo prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK"(OFF) position before con-necting or disconnecting scan tool MB991958.(1) Connect scan tool MB991958 to the data link connector.(2) Turn the ignition switch to the "ON" position.(3) Detach the intake air hose at the throttle body.(4) Disconnect the connector of the throttle position sensor.(5) Use test harness special tool (MB991658) to connect only

terminals No. 1, No. 2, No. 3, and No. 4.(6) Set scan tool MB991958 to the data reading mode for item

79, Throttle Position Sensor (main).• Output voltage should be between 0.3 and 0.7 volt when

the throttle valve is fully closed with your finger.• Output voltage should be between 4.0 volts or more

when the throttle valve is fully open with your finger.(7) Turn the ignition switch to the "LOCK"(OFF) position.Q: Is the sensor operating properly?


NO : Go to Step 2.

STEP 2. Check harness connector B-05 at throttle position sensor for damage.Q: Is the harness connector in good condition?



AK302970AB

MB991911

MB991824

MB991827

AK201174

16 5 4 3 2

B-05(B)

CONNECTOR: B-05

HARNESS CONNECTOR: COMPONENT SIDE AB

TSB Revision


STEP 3. Measure the sensor supply voltage at throttle position sensor harness side connector B-05.(1) Disconnect the connector B-05 and measure at the harness



(4) Turn the ignition switch to the "LOCK"(OFF) position.Q: Is the measured voltage between 4.8 and 5.2 volts?


STEP 4. Check harness connector D-135 at PCM for damage.Q: Is the harness connector in good condition?



AK201174

16 5 4 3 2

B-05(B)

CONNECTOR: B-05


AK201445

16 5 4 3 2


AB

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 5. Check for open circuit and short circuit to ground between throttle position sensor connector B-05 (terminal No. 2) and PCM connector D-135 (terminal No. 106).Q: Is the harness wire in good condition?


AK201174

16 5 4 3 2

B-05(B)

CONNECTOR: B-05


AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision






the throttle valve is fully closed with your finger.• Output voltage should be 4.0 volts or more when the

throttle valve is fully open with your finger.(7) Turn the ignition switch to the "LOCK"(OFF) position.Q: Is the sensor operating properly?






AK302970AB

MB991911

MB991824

MB991827

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 8. Check for harness damage between throttle position sensor connector B-05 (terminal No. 2) and PCM connector D-135 (terminal No. 106).Q: Is the harness wire in good condition?


AK201174

16 5 4 3 2

B-05(B)

CONNECTOR: B-05


AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 9. Check for open circuit, short circuit to ground and harness damage between throttle position sensor connector B-05 (terminal No. 1) and PCM connector D-135 (terminal No. 115).Q: Is the harness wire in good condition?


STEP10. Replace the throttle body assembly.(1) Replace the throttle body assembly.(2) Turn the ignition switch to the "ON" position.(3) After the DTC has been deleted, read the DTC again.(4) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is DTC P0122 set?

YES : Replace the PCM. Then go to Step 11.NO : The procedure is complete.

AK201174

16 5 4 3 2

B-05(B)

CONNECTOR: B-05


AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK201174

16 5 4 3 2

B-05(B)

CONNECTOR: B-05


TSB Revision


STEP 11. Using scan tool MB991958, read the diagnostic trouble code (DTC).

CAUTIONTo prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK"(OFF) position before con-necting or disconnecting scan tool MB991958.(1) Connect scan tool MB991958 to the data link connector.(2) Turn the ignition switch to the "ON" position.(3) After the DTC has been deleted, read the DTC again.(4) Turn the ignition switch to the "LOCK"(OFF) position.Q: Is DTC P0122 set?


AK302970AB

MB991911

MB991824

MB991827

TSB Revision


DTC P0123: Throttle Position Sensor (Main) Circuit high Input

.

CIRCUIT OPERATION• A 5-volt power supply is applied on the throttle

position sensor (main) power terminal (terminal No. 2) from the PCM (terminal No. 106).The ground terminal (terminal No. 4) is grounded with PCM (terminal No. 105).

• When the throttle valve shaft is turned from the idle position to the fully opened position, the resistance between the throttle position sensor (main) output terminal (terminal No. 1) and ground terminal (terminal No. 4) will increase according to the rotation.

.

AK201130

RE

D

WH

ITE

BLA

CK

B-05

5 V

106

2

THROTTLEPOSITIONSENSOR(MAIN)


115 105

1 4

Throttle Position Sensor (Main) Circuit

9192 93949596979899100

105

113114 115116117 118119120

106 107108109 110111112

101102103 104

D-135(MU803805)

61 2 3 4 5

AK201173

THROTTLE POSITION SENSOR

AB

B-05(B)

CONNECTOR: B-05

AK201038

CONNECTOR: D-132

AB

PCM

D-132(GR)

TSB Revision


TECHNICAL DESCRIPTION• The throttle position sensor (main) outputs volt-

age which corresponds to the throttle valve open-ing angle.

• The PCM checks whether the voltage is within a specified range.

.

DESCRIPTIONS OF MONITOR METHODSThrottle position sensor (main) output voltage is out

of specified range..


.



• Not applicable


• Not applicable.

DTC SET CONDITIONS

Logic Flow Chart

.

Check Conditions• Ignition switch "ON" position.

Judgement Criteria• Throttle position sensor (main) output voltage

should be 4.8 volts or more for 0.5 second.

START

YES

YES

YES

NO

NO

NO

CONTINUOUSFAILURE FOR 0.5sec

MALFUNCTION

END

GOOD

OUTPUT VOLTAGE< =0.35V

OUTPUT VOLTAGE > =4.8V

AK302926

TSB Revision


.



• Throttle position sensor failed.• Open throttle position sensor (main) circuit, har-




• MB991658: Test Harness Set








NO : Go to Step 2.

STEP 2. Check harness connector B-05 at throttle position sensor for damage.Q: Is the harness connector in good condition?



AK302970AB

MB991911

MB991824

MB991827

AK201174

16 5 4 3 2

B-05(B)

CONNECTOR: B-05


TSB Revision


STEP 3. Check the continuity at throttle position sensor harness side connector B-05.(1) Disconnect the connector B-05 and measure at the harness

side.

(2) Measure the continuity between terminal No. 4 and ground• Should be less than 2 ohms.

Q: Dose continuity exist?YES : Go to Step 7.NO : Go to Step 4.




AK201174

16 5 4 3 2

B-05(B)

CONNECTOR: B-05


AK201446

16 5 4 3 2

AB


AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 5. Check for open circuit and harness damage between throttle position sensor connector B-05 (terminal No. 4) and PCM connector D-135 (terminal No. 105).Q: Is the harness wire in good condition?


AK201174

16 5 4 3 2

B-05(B)

CONNECTOR: B-05


AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision










STEP 7. Replace the throttle body assembly.(1) Replace the throttle body assembly.(2) Turn the ignition switch to the "ON" position.(3) After the DTC has been deleted, read the DTC again.(4) Turn the ignition switch to the "LOCK" (OFF) position.Q: Is DTC P0123 set?

YES : Replace the PCM. Then go to Step 8.NO : The procedure is complete.

AK302970AB

MB991911

MB991824

MB991827

AK201174

16 5 4 3 2

B-05(B)

CONNECTOR: B-05


TSB Revision


STEP 8. Using scan tool MB991958, read the diagnostic trouble code (DTC).

CAUTIONTo prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK"(OFF) position before con-necting or disconnecting scan tool MB991958.(1) Connect scan tool MB991958 to the data link connector.(2) Turn the ignition switch to the "ON" position.(3) After the DTC has been deleted, read the DTC again.(4) Turn the ignition switch to the "LOCK"(OFF) position.Q: Is DTC P0123 set?


AK302970AB

MB991911

MB991824

MB991827

TSB Revision


DTC P0125: Insufficient Coolant Temperature for Closed Loop Fuel Control

.





.

YE

LLO

W-G

RE

EN

BLA

CK

AK302923



5 V

98

2

B-37(MU802406)

96

1


1 2

9192 93949596979899100

105

113114 115116117 118119120

106 107108109 110111112

101102103 104

D-135(MU803805)

AK200942


AK200942AB

B-37(B)

CONNECTOR: B-37

AK201038AF

CONNECTOR: D-135

PCM

D-135(GR)

TSB Revision





.

DESCRIPTIONS OF MONITOR METHODS• Engine coolant temperature sensor output volt-

age drops from over 40°C (104°F) to under 40°C (104°F) and keeps under 40°C (104°F) for 5 min-utes.

• Engine coolant temperature sensor output volt-age does not reach close loop enable tempera-ture within specified period when engine coolant temperature sensor output voltage at engine start is under 7°C (45°F).

.




• Not applicable


• Volume airflow sensor• Engine coolant temperature sensor• Intake air temperature sensor

.

TSB Revision



Logic Flow Chart

Check Conditions, Judgement Criteria• Engine coolant temperature decreases from

higher than 40°C (104°F) to lower than 40°C (104°F).

• Then the engine coolant temperature has contin-ued to be 40°C (104°F) or lower for 5 minutes.

.

START

END

YES

NO

NO

YES

MALFUNCTION GOOD

TIME HAVE PASSEDAFTER STARTING?*

ENGINECOOLANTTEMP.

TEMP. WHERECLOSED LOOPSTARTS

>


NO

YES

*: SEE DTC SET CONDITIONS-SET CONDITIONS, JUDGMENT CRITERIA

AK302927

TSB Revision


DTC SET CONDITIONS <Range/Performance problem − drift>

Logic Flow Chart

Check Conditions, Judgement Criteria• About 60 − 300 seconds have passed for the

engine coolant temperature to rise to about 7°C (44.6°F) after starting sequence was completed.

• However, time is not counted when fuel is shut off.

.




• Engine coolant temperature sensor failed.• Harness damage or connector damage.• PCM failed.


• MB991958: Scan Tool (MUT-III Sub Assembly)• MB991824: V.C.I.

START

END

NO

NO

YES

YES

MALFUNCTION GOOD

UNDER 40˚C (107˚F)

300secs HAVE PASSED?

NO

YES

OVER 40˚C (107˚F)

YESOVER 40˚C (107˚F)

NO

AK302928

TSB Revision


• MB991827: USB Cable• MB991911: Main Harness B






NO : Go to Step 2.AK302970AB

MB991911

MB991824

MB991827

TSB Revision


STEP 2. Measure the sensor output voltage at engine coolant temperature sensor connector B-37 by backprobing.(1) Do not disconnect the connector B-37.(2) Turn the ignition switch to the "ON" position.


• When engine coolant temperature is −20°C (−4°F), volt-age should be between 3.9 and 4.5 volts.

• When engine coolant temperature is 0°C (32°F), voltage should be between 3.2 and 3.8 volts.




• When engine coolant temperature is 80°C (176°F), volt-age should be between 0.3 and 0.9 volt.






AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AK201572

21

AB


AK200943

12

AB


CONNECTOR: B-37

B-37(B)

TSB Revision








STEP 5. Check connector B-37 at engine coolant temperature sensor for damage.Q: Is the connector in good condition?



AK302970AB

MB991911

MB991824

MB991827

AK200943

12

AB


CONNECTOR: B-37

B-37(B)

TSB Revision










AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AK000234 AL

2 1


AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 8. Check the continuity at engine coolant temperature sensor harness side connector B-37.(1) Disconnect the connector B-37 and measure at the harness

side.







AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AK000235


12

AL

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision




AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision









YES : Go to Step 12.NO : Replace the engine coolant temperature sensor. Then

go to Step 14.




AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AKX01622

AKX01623 AB

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision








DTC P0128: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)

.

TECHNICAL DESCRIPTION• The PCM checks the time for the cooling water

temperature to reach the judgment temperature..

DESCRIPTIONS OF MONITOR METHODSEngine coolant temperature does not reach 77°C

(171°F) within specified period after cold start..

MONITOR EXECUTIONOnce per driving cycle.



• Not applicable

AK200943

12

AB


CONNECTOR: B-37

B-37(B)

AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision



• Volume airflow sensor

• Engine coolant temperature sensor• Intake air temperature sensor

.

DTC SET CONDITIONS

Logic Flow Chart

.

Check Conditions• Engine coolant temperature is between −10°C

(14°F) and 77°C (171°F) when the engine is started.

• The engine coolant temperature − intake air tem-perature is 5°C (9°F) or less when the engine is started.

• The intake air temperature when the engine is started − intake air temperature is 5°C (9°F) or less.

• The volume airflow sensors output frequency is in the low frequency state for 300 seconds or less.

Judgment Criteria• The time for the engine coolant temperature to

rise to 77°C (171°F) takes longer than approxi-mately 13 to 20 minutes.

• The PCM monitors for this condition once during the drive cycle.

.


START

END

YES

NO

NO

YES

MALFUNCTION GOOD

TIME HAVE PASSEDAFTER STARTING?*

ENGINE COOLANT TEMP.>=77˚C (171˚F)

*: See DTC SET CONDITIONS-JUDGMENT CRITERIA


NO

YES

AK302929

TSB Revision



• The thermostat is faulty.

• PCM failed.

DIAGNOSIS

STEP 1. Check the cooling system.Refer to GROUP 14, Engine Cooling Diagnosis P.14-2.Q: Is the cooling system normal?

YES : Replace the PCM. Then check that the DTC P0128 does not reset.

NO : Repair it. Then check that the DTC P0128 does not reset.

DTC P0130: Heated Oxygen Sensor Circuit (bank 1, sensor 1) B

LA

CK

BL

AC

KB

LA

CK

TO PCM

FROM MFI RELAY

WH

ITE

AK201131

96 109

431

RIGHT BANKHEATED OXYGENSENSOR (FRONT)

POWERTRAIN CONTROLMODULE (PCM)

8

9

7

1 243

B-07MU802605

2

1

12

23 24 25 26

2

13

3

14

4

15

5

16

6

17

7

18

8

19

9

20 21 22

27 28 29 30 31 32 33

10 11

D-116

15 7 8

3 49 10

26

D-14MU801335

Right Bank Heated Oxygen Sensor (front) Circuit

9192 93949596979899100

105

113114 115116117 118119120

106 107108109 110111112

101102103 104

D-135(MU803805)

TSB Revision


.

CIRCUIT OPERATION• A voltage corresponding to the oxygen concen-

tration in the exhaust gas is sent to the PCM (ter-minal No. 109) from the output terminal (terminal No. 4) of the right bank heated oxygen sensor (front).

• Terminal No. 2 of the right bank heated oxygen sensor (front) is grounded with PCM (terminal No. 96).

.

TECHNICAL DESCRIPTION• The right bank heated oxygen sensor (front)

detects the concentration of oxygen in the exhaust gas; it converts those data to voltage, and inputs the resulting signals to the PCM.

• When the right bank heated oxygen sensor (front) begins to deteriorate, the heated oxygen sensor signal response becomes poor.

• The PCM forcibly varies the air/fuel mixture to make it leaner and richer, and checks the response speed of the right bank heated oxygen sensor (front). In addition, the PCM also checks for an open circuit in the right bank heated oxy-gen sensor (front) output line.

.

DESCRIPTIONS OF MONITOR METHODS Right bank heated oxygen sensor (front) circuit is

switched to 5 volts intentionally when oxygen sensor output is low, and detects the malfunction if the output voltage changes to equal or greater than 4.5 volts. The above procedure is repeated when oxygen sensor is inactive.

.


AK201273

CONNECTOR: B-07

B-07(B)

AB


AK201038AF

CONNECTOR: D-135

PCM

D-135(GR)

AK201049

D-14

AB

CONNECTOR: D-14

AK201049

CONNECTOR: D-116

D-116

AC

TSB Revision




• Heated oxygen sensor heater (front) monitor• Misfire monitor• Fuel system monitor


• Volume airflow sensor• Engine coolant temperature sensor• Intake air temperature sensor• Barometric pressure sensor• Accelerator pedal position sensor

.

TSB Revision


DTC SET CONDITIONS

Logic Flow Chart

.

Check Conditions• 3 minutes or more have passed since the engine

starting sequence was completed.• Right bank heated oxygen sensor (front) signal

voltage has continued to be 0.2 volt or lower.

• Engine coolant temperature is higher than 76°C (169°F).

• Engine speed is higher than 1,200 r/min.• Volumetric efficiency is higher than 25 percent.• Monitoring time: 7 seconds.

START

VF > =4.5V

2secs HAS PASSED

YES

YES

YES

NO

NO

NO

MALFUNCTION


YES

NO MONITORINGCONDITIONS

+5V ON

AK302930

VF < 0.2V

10secs HAS PASSED

YES

YES

NO

NO

END

MALFUNCTION

GOOD

MODULATE A/F CONDITION TO RICH

TSB Revision


Judgment Criteria• Input voltage supplied to the PCM interface circuit

is higher than 4.5 volts when 5 volts is applied to the right bank heated oxygen sensor (front) out-put line via a resistor.

.

OBD-II DRIVE CYCLE PATTERN Refer to Diagnostic Function − OBD-II Drive Cycle −



• Right bank heated oxygen sensor (front) deterio-rated.

• Short circuit in right bank heated oxygen sensor (front) output line or harness damage.

• Open circuit in right bank heated oxygen sensor (front) ground line or harness damage.

• Connector damage.• PCM failed.



• MD998464: Test Harness

STEP 1. Using scan tool MB991958, check data list item 39: Heated Oxygen Sensor Bank 1, Sensor 1 (right front).


39, Heated Oxygen Sensor Bank 1, Sensor 1 (right front).• Warming up the engine. When the engine is revved, the

output voltage should be 0.6 to 1.0 volt.• Warming up the engine. When the engine is idling, the

output voltage should repeat 0.4 volt and 0.6 to 1.0 volt alternately.



NO : Go to Step 2.

AK302970AB

MB991911

MB991824

MB991827

TSB Revision


STEP 2. Measure the sensor output voltage at right bank heated oxygen sensor (front) connector B-07 by backprobing(1) Do not disconnect the connector B-07.(2) Start the engine and run at idle.


• Warming up the engine. When the engine is 2,500 r/min, the output voltage should repeat 0 to 0.8 volt alternately.



AK201274

12

34

CONNECTOR: B-07

B-07(B)

AB



AKX01532AC

31 2

4


TSB Revision


STEP 3. Measure the sensor output voltage at PCM connector D-135 by backprobing(1) Do not disconnect the connector D-135.(2) Start the engine and run at idle.


• Warming up the engine. When the engine is 2,500 r/min, the output voltage should repeat 0 to 0.8 volt alternately.



AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

AK201396

9192 93949596979899100101102103 104

105106 107108109 110111112

113114 115116117 118119120

AB

D-135 HARNESS CONNECTOR:HARNESS SIDE

TSB Revision


STEP 4. Check harness connector B-07 at right bank heated oxygen sensor (front) and harness connector D-135 at PCM for damage.Q: Is the harness connector in good condition?



AK201274

12

34

CONNECTOR: B-07

B-07(B)

AB



AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 5. Using scan tool MB991958, check data list item 39: Right Bank Heated Oxygen Sensor Bank 1, Sensor 1 (right front).


39, Heated Oxygen Sensor Bank 1, Sensor 1 (right front).• Warming up the engine. When the engine is revved, the

output voltage should be 0.6 to 1.0 volt.• Warming up the engine. When the engine is idling, the

output voltage should repeat 0.4 volt and 0.6 to 1.0 volt alternately.




AK302970AB

MB991911

MB991824

MB991827

TSB Revision


STEP 6. Check harness connector B-07 at right bank heated oxygen sensor (front) and harness connector D-135 at PCM for damage.Q: Is the harness connector in good condition?

YES : Repair harness wire between right bank heated oxygen sensor (front) connector B-07 (terminal No. 4) and PCM connector D-135 (terminal No. 109) because of open circuit or harness damage. Then go to Step 15.


AK201274

12

34

CONNECTOR: B-07

B-07(B)

AB



AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 7. Check harness connector B-07 at right bank heated oxygen sensor (front) for damage.Q: Is the harness connector in good condition?



AK201274

12

34

CONNECTOR: B-07

B-07(B)

AB



TSB Revision


STEP 8. Check the continuity at right bank heated oxygen sensor (front) harness side connector B-07.(1) Disconnect the connector B-07 and measure at the harness

side.







AK201274

12

34

CONNECTOR: B-07

B-07(B)

AB



AK000239AW

124 3


AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 10. Check for open circuit and harness damage between right bank heated oxygen sensor (front) connector B-07 (terminal No. 2) and PCM connector D-135 (terminal No. 96).Q: Is the harness wire in good condition?


AK201274

12

34

CONNECTOR: B-07

B-07(B)

AB



AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision





AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 12. Check for harness damage between right bank heated oxygen sensor (front) connector B-07 (terminal No. 2) and PCM connector D-135 (terminal No. 96).Q: Is the harness wire in good condition?


AK201274

12

34

CONNECTOR: B-07

B-07(B)

AB



AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 13. Check for short circuit to ground and harness damage between right bank heated oxygen sensor (front) connector B-07 (terminal No. 4) and PCM connector D-135 (terminal No. 109).Q: Is the harness wire in good condition?


AK201274

12

34

CONNECTOR: B-07

B-07(B)

AB



AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 14. Check the right bank heated oxygen sensor (front).(1) Disconnect the right bank heated oxygen sensor (front)

connector B-07 and connect test harness special tool MD998464 to the connector on the right bank heated oxygen sensor (front) side.

(2) Warm up the engine until engine coolant temperature reaches 80°C (176°F) or higher.

(3) Perform a racing for 5 minutes or more with the engine speed of 4,500 r/min.

(4) Connect a digital voltage meter between terminal No. 2 (black clip of special tool) and terminal No. 4 (white clip of special tool).

(5) While repeatedly revving the engine, measure the right bank heated oxygen sensor (front) output voltage.

Standard value: 0.6 − 1.0 volt

CAUTION• Be very careful when connecting the jumper wire;

incorrect connection can damage the right bank heated oxygen sensor (front).

• Be careful the heater is broken when voltage of beyond 8 volts is applied to the right bank heated oxygen sen-sor (front) heater.NOTE: If the sufficiently high temperature [of approximate 400°C(752°F) or more] is not reached although the right bank heated oxygen sensor (front) is normal, the output voltage would be possibly low although the rich air/fuel ratio. Therefore, if the output voltage is low, use a jumper wire to connect the terminal No. 1 (red clip of special tool) and the terminal No. 3 (blue clip of special tool) of the right bank heated oxygen sensor (front) with the positive terminal and the negative terminal of 8 volts power supply respec-tively, then check again.

Q: Is the voltage between 0.6 and 1.0 volt?YES : Replace the PCM. Then go to Step 15.NO : Replace the right bank heated oxygen sensor (front).

Then go to Step 15.





AK201274

12

34

CONNECTOR: B-07

B-07(B)

AB



AKX01624

HEATEDOXYGENSENSORCOMPONENTSIDECONNECTOR

MD998464

WHITE

BLACK

AL

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DTC P0131: Heated Oxygen Sensor Circuit Low Voltage (bank 1, sensor 1)

BL

AC

K

BL

AC

KB

LA

CK

TO PCM

FROM MFI RELAY

WH

ITE

AK201131

96 109

431


POWERTRAIN CONTROLMODULE (PCM)

8

9

7

1 243

B-07MU802605

2

1

12

23 24 25 26

2

13

3

14

4

15

5

16

6

17

7

18

8

19

9

20 21 22

27 28 29 30 31 32 33

10 11

D-116

15 7 8

3 49 10

26

D-14MU801335

Right Bank Heated Oxygen Sensor (front) Circuit

9192 93949596979899100

105

113114 115116117 118119120

106 107108109 110111112

101102103 104

D-135(MU803805)

AK201273

CONNECTOR: B-07

B-07(B)

AB


AK201038AF

CONNECTOR: D-135

PCM

D-135(GR)

AK201049

D-14

AB

CONNECTOR: D-14

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.

CIRCUIT OPERATION• A voltage corresponding to the oxygen concen-

tration in the exhaust gas is sent to the PCM (ter-minal No. 109) from the output terminal (terminal No. 4) of the right bank heated oxygen sensor (front).

• Terminal No. 2 of the right bank heated oxygen sensor (front) is grounded with PCM (terminal No. 96).

.

TECHNICAL DESCRIPTION• The right bank heated oxygen sensor (front)

detects the concentration of oxygen in the exhaust gas; it converts those data to voltage, and inputs the resulting signals to the PCM.

• When the right bank heated oxygen sensor (front) begins to deteriorate, the heated oxygen sensor signal response becomes poor.

• The PCM forcibly varies the air/fuel mixture to make it leaner and richer, and checks the response speed of the right bank heated oxygen sensor (front). In addition, the PCM also checks for an open circuit in the right bank heated oxy-gen sensor (front) output line.

.

DESCRIPTIONS OF MONITOR METHODSRight bank heated oxygen sensor (front) output volt-

age stays low when air/fuel ratio is forced to be rich. The above procedure is repeated when oxy-gen sensor is inactive.

.




• Heated oxygen sensor heater (front) monitor• Misfire monitor• Fuel system monitor


• Volume airflow sensor• Engine coolant temperature sensor• Intake air temperature sensor• Barometric pressure sensor• Throttle position sensor• Accelerator pedal position sensor

.

AK201049

CONNECTOR: D-116

D-116

AC

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DTC SET CONDITIONS

Logic Flow Chart

.

Check Conditions• 3 minutes or more have passed since the engine

starting sequence was completed.• Right bank heated oxygen sensor (front) signal

voltage has continued to be 0.2 volt or lower.

• Engine coolant temperature is higher than 76°C (169°F).

• Engine speed is higher than 1,200 r/min.• Volumetric efficiency is higher than 25 percent.• Volume airflow sensor output frequency is higher

than 100 Hz.

START

VF > =4.5V

2secs HAS PASSED

YES

YES

YES

NO

NO

NO

MALFUNCTION


YES

NO MONITORINGCONDITIONS

+5V ON

AK302930

VF < 0.2V

10secs HAS PASSED

YES

YES

NO

NO

END

MALFUNCTION

GOOD

MODULATE A/F CONDITION TO RICH

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• At least 20 seconds have passed since fuel shut off control was canceled.

• Monitoring time: 10 seconds.

Judgement Criteria• Making the air/fuel ratio 15 percent for 10 sec-

onds richer does not result in raising the heated oxygen sensor (front) output voltage beyond 0.2 volt.

.




• Right bank heated oxygen sensor (front) failed.• Short circuit in right bank heated oxygen sensor

(front) output line.• Connector damage.• PCM failed.



• MD998464: Test Harness

STEP 1. Using scan tool MB991958, check data list item 39: Heated Oxygen Sensor Bank 1, Sensor 1 (right front).


39, Heated Oxygen Sensor Bank 1, Sensor 1 (right front).• Warm up the engine. When the engine is revved, the

output voltage should measure 0.6 to 1.0 volt.• Warm up the engine. When the engine is idling, the out-

put voltage should repeat 0.4 volt and 0.6 to 1.0 volt alternately.



NO : Go to Step 2.

AK302970AB

MB991911

MB991824

MB991827

TSB Revision


STEP 2. Check the right bank heated oxygen sensor (front).(1) Disconnect the right bank heated oxygen sensor (front)

connector B-07 and connect test harness special tool MD998464 to the connector on the right bank heated oxygen sensor (front) side.

(2) Warm up the engine until engine coolant temperature reaches 80°C (176°F) or higher.

(3) Perform a racing for 5 minutes or more with the engine speed of 4,500 r/min.

(4) Connect a digital voltage meter between terminal No. 2 (black clip of special tool) and terminal No. 4 (white clip of special tool).

(5) While repeatedly revving the engine, measure the right bank heated oxygen sensor (front) output voltage.

Standard value: 0.6 − 1.0 volt

CAUTION• Be very careful when connecting the jumper wire;

incorrect connection can damage the right bank heated oxygen sensor (front).

• Be careful the heater is broken when voltage of beyond 8 volts is applied to the right bank heated oxygen sen-sor (front) heater.NOTE: If the sufficiently high temperature [of approximate 400°C(752°F) or more] is not reached although the right bank heated oxygen sensor (front) is normal, the output voltage would be possibly low although the rich air/fuel ratio. Therefore, if the output voltage is low, use a jumper wire to connect the terminal No. 1 (red clip of special tool) and the terminal No. 3 (blue clip of special tool) of the right bank heated oxygen sensor (front) with the positive terminal and the negative terminal of 8 volts power supply respec-tively, then check again.

Q: Is the voltage between 0.6 and 1.0 volt?YES : Go to Step 3.NO : Replace the right bank heated oxygen sensor (front).

Then go to Step 5.

AK201274

12

34

CONNECTOR: B-07

B-07(B)

AB



AKX01624

HEATEDOXYGENSENSORCOMPONENTSIDECONNECTOR

MD998464

WHITE

BLACK

AL

TSB Revision


STEP 3. Check connector B-07 at right bank heated oxygen sensor (front) and connector D-135 at PCM for damage.Q: Is the connector in good condition?



AK201274

12

34

CONNECTOR: B-07

B-07(B)

AB



AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision


STEP 4. Check for short circuit to ground between right bank heated oxygen sensor (front) connector B-07 (terminal No. 4) and PCM connector D-135 (terminal No. 109).Q: Is the harness wire in good condition?


STEP 5. Perform the OBD-II drive cycle.(1) Carry out a test drive with the drive cycle pattern. Refer to



YES : Repeat the troubleshooting.NO : The procedure is complete.

AK201274

12

34

CONNECTOR: B-07

B-07(B)

AB



AK200947

919293949596979899100101102103104

105106107108109110111112

113114115116117118119120

CONNECTOR: D-135


AB

PCM

D-135(GR)

TSB Revision

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