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ENGINE CONTROL AND ENGINE IMMOBILISER SYSTEM

2 1

4 3

1C13

EE

4 IO2

20ID1

1C7

18 ID1ID119

2

1

I 2

5 E 10 D

1

2

1

2

1

2

1

2

ST2

IG2AM2

8

67

2 IG1

1N1

30AAM2

10 1E

4 E

2 BB18 BB1

1D13

E11 E11 E11 E11

A2A16 B5 B

20AEFIorECD

EFIorECD

RELAY

3 IO2

I14

D20

IO21

D17

I15

IGNITION SWI18

P

N

6

9

B-W

B-R

B-R

B-R

B-R

W-R

W-R

B-W

B-W

B- W

B- R

B- W

B-R

B-W

BB-Y

B-Y

B-Y

FUSIBLE

LIN

KBLOCK

F6

INJECTORNO.1

I9

INJECTORNO.2

I10

INJECTORNO.3

I11

INJECTORNO.4

I12

B-R

B-R

B-R

B-R

Y B L R

B- R B- R B- R B- R

TOSTARTERRELAY

TOCOMBINAT

IONMETER

BATTERY

B-Y

G-W

G-R

B-R

B

BB-R

G-R

G-W

F12FUEL PUMP

10 8 9 6 7

BM

5

W-B

F13FUEL PUMP CONTROL ECU

B- Y

B- W

B- Y

B- Y

B- Y

L

L

VSV(VAPORPRE

SSURESENSOR)

V5

E1

1 IG2

B-R

B-R

B-R

1D5

PARK/N

EUTRAL

POSITIO

NSW

P1

2

1

E11

A3

INJECTORNO.5

I13

B-R

G

E 5

ENGINE CONTROL MODULE

DA , E 8B, E 6 C, E 7

B- R

IW112IG22

BATT NSW #1 #2 #3 #4 #5

+B FPC DI FP- FP+

B-Y

STA FPC DI

E

1

TPC

2

1

G-R

FUELCONTROLSW

F7

4

E, E 9

5M

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IN119 IN118 IN113

IW11 IW12 IW111

9

E 4

15 IW1

8 IG2

16 E

E10

E10

8 IO1

B10 B19 B22 D22 B21 9 B B13 B20

EB311EB3

IO12

B-W

WR-L

(SHIELDED)

(SHIELDED)

(SHIELDED)

2

1

2

11

2

I14

IG2

7

E10 D7 D27 E8

17

IN1

IW15 IW16

B- R

B-R

B-R

B- R

B-R

B- RE11 E11

B-Y

B-Y

A4 5 A A6

B-W

B-W

INJECTORNO.8

I16

INJECTORNO.7

I15

INJECTORNO.6

I14

B-Y

BR

B-Y

(SHIELDED)

(SHIELDED)

(SHIELDED)

B

R

B

-Y

B-

Y

B-

Y

B-Y

R-B

B- W

B-Y

R-B

B- Y

1 3

2 4

ACCELPOSITIONSENSOR

A14

MASS AIR FLOWMETER

M 1

L-Y

G-W

Y-B

L-B

BR-W

L-R

RR-B

R-Y

Y-B

L-Y

G-W

Y-B L

-B

L-R

BR-W

L-Y

G-W

Y-B

B

R-W

BR-W

L-R

BR-W

L- R

BR- W

B-Y

L- R

BR- W

BR- W

BR- W

L-R

IN17

BR-W

4 3 1 4

1 3

3

3212

2

245 1

B- Y

B-Y

VAPOR PRESSURESENSOR

V 1

R-B

W

W

W

H 8HEATED OXYGENSENSOR(BANK 2 SENSOR 2)

+B E1

#6 #7 #8 MREL HTR2 OXR2 +B1 +B

PTNK

VG EVG THA PTNK E2 VC VPA VPA2 VTA VTA2

E2 VCC

HT OX

IN15

THROTTLEPOSITIONSENSOR

T3

E 5


DA , E 8B, E 6 C, E 7 E, E 9

B-Y

I 2

B-Y

B18 B2

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BR

3EB3

IO17

EB35

EB31

E10E 4

1

2

B7 B17B3 B11 B12B4 D18 D8

EB3

IO13

8

E 8

E 9

E 8

B- Y

B- Y

BR

(SHIELDED)

B- Y

(SHIELDED)

(SHIELDED)

BR

BR

BR

B- Y

BR

BRB- Y

B- Y

B-Y

L

LB

B

BR

(SHIELDED)

(SHIELDED)

(SHIELDED)

(SHIELDED)

(SHIELDED)

(SHIELDED)

(SHIELDED)

BRRY

B-Y

BR

B-Y

BR

(SHIELDED)

1 3 1 3

3 1

2 4 2 4

A

4 2

A

A A A

A29 A7 A8 A30 D13 D25 D14 E18 B1 A31 A21 A9

E 7

EC

A

A

B13A9B15

C 9,

A23

A B

CENTER ECU

C 8THROTTLE CONTROLMOTOR

T 2

L-B

W-G

Y-B

W-B

W-B

W-B

W-B

Y-R

Y-R

W-B

W R

(SHIELDED)

4 3 1 2

VSV(EVAP)

V4 H

EA

TEDOXYGEN

SEN

SOR

(BAN

K2SENSOR1)

H7

BR

B HEATED

OXYGEN

SENSOR

(BANK1

SENSOR1)

H5

HEATEDOXYG

EN

SENSOR

(BANK1SENS

OR2)

H6

W

L-B

JUNCTIONCONNECTOR

J24

B L

BR

A24

GL

B-Y

B-Y

B- Y

BR

JUNCTIONCONNECTOR

J22

1

2

14 B

ENGINECOOLANT

TEMP.SENSOR

E2

G-B

BR-W

THW

+B E1 +B E1

E1 +B

PRG HTR OXR1 HTL OXL1 E1 OXL2 HTL2

HT OX HT OX

OX HT

CL- CL+ M- M+ GE01 ACT A/C THWO ELS2 E03 E02 E01 ME01

ACT AC1 TW FrHR

JUNCTIONCONNECTOR

(SHIELDED)

B

B

B J25

E 5


DA , E 8B, E 6 C, E 7 E, E 9

B- Y B- Y

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15 IN1

E10

2111 E

BR

(SHIELDED)

B

10AOBD

2D9

D

812 DA2728 AA2625 A

A

A

A BR

W- B

B- W

DATA LINK CONNECTOR 3

W- B

D 7

BR

BR

B-Y

V-W

V-W

W-B

W-B

(SHIELDED)

(SHIELDED)

BR

BR

BR

B- Y

(SHIELDED)

SIL

A

5

A A

A

1647

AA

IGT1

BAT

A

A

CG

A

11 AA12 A13 14 A15 A16

IN112

IG38

FROMIGNITIONCOIL

ANDIGNITERS

TOIGNITIONCOIL

ANDIGNITERS

FROMDIODE

(IDLE-UP)

R

R

FROMABS&TRAC&VSCECU

ORFROMABSECU

R

B R L G YB-Y

B-L

L-B

B-R

B-W

G-W

J16JUNCTIONCONNECTOR

SG

(SHIELDED)

(SHIELDED)

FROM POWER SOURCE SYSTEM (SEE PAGE 64)

JUNCTION

CON

NECTOR

J21

JUNCTION

CON

NECTOR

J7

IGT2 IGT3 IGT4 IGT5 IGT6 IGT7 IGT8 IGF2 IGF1 ELS ELS4

SIL EOM

IJ1 IJ110 IJ116

V-W

W-B

B-W

IJ1

5

BR

E 5


DA , E 8B, E 6 C, E 7 E, E 9

B-YB- Y

W- BI 5

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17 IW1

9 E

21 2D

10AIGN

5 D

18 IW1

1 1

EC12EC13

A17 A18

2

1 2

1

A10 A23A22

E10

E14E13E12

IG

2D12

E6D15D16 D6

BR

W- B

BR

B- Y B- Y

BR

W- B

JUNCTIONCONNECTOR

J23

J25JUNCTIONCONNECTOR

RG

GR

(SHIELDED)

(SH

IELDED)

B

W

BBWW

B-R

B-R

B-Y

BR

V

-R

V-R G

CRANKSHAFTPOSITION

SENSOR

C3

CAMSHAFTPOSITION

SENSOR

C1

KNOCKSENSOR1

K1

KNOCKSENSOR2

K2

D 1DATA LINKCONNECTOR 1

BR

A AA

B

8

123

BR

A

(SHIELDED)

B

B

FROM POWER SOURCE SYSTEM(SEE PAGE 64)

5

2 3 4 1

B V WG-W

L-B

V-G

R-Y

W-B

G- W

W

V

B

TRANSPONDER KEYAMPLIFIER

T10

B- Y

A

(SHIELDED)

TE1 IGSW KNKR KNKL G2 NE- NE+

E21

B

B

E20

FROMCENTERECU

TOUNLOCKWARNINGS

W

LED KSW

G-R

G-R

R-B

TACH SPD W STP CODE RXCK TXCT

E7

Y-B

Y- B

+BM

TE1

+BE1

E 5


DA , E 8B, E 6 C, E 7 E, E 9

B- Y

B

B

JUNCTION

C

ONNECTOR

J43

JUNCTION

CONNECTOR

J21

B23

TRC-

B15

TRC+

24 B

ENG-ENG+

B16

NEO

C12

IO16

IO11

IO110

IO15

IO19

IG417

IG45

IG416

IG44

IG415

7 14 22 24 16

R G Y LW

RW G Y L

NEO ENG+ ENG- TRC+ TRC-

ABS & TRAC & VSC ECUA40

G LW

R Y

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EC IF

2B1

15 A

6 BB7B19B12

JUNCTIONCONNECTOR

56 2P

IU3618 IU3IU35

C

E

B

E

B

C

JUNCTION

CONNECTOR

J18

JUNCTION

CONNECTOR

J44

JUNCTION

CONNECTOR

J44

SPEEDOMETER

MALFUNCTION

INDICATORLAMP

TACHOMETER

15AGAUGE

2P83

B

B

15ASTOP

2B10

1

2

A

B- Y

BR

W- B

G- W

W

V

B

JUNCTIONCONNECTOR

J14

C12

G-W

SB

G-O

G-W

SB

SB

W

SB

SB

V

B

B

SB

SB

SB

W-B

BR

B- Y

COMBINATION METER

A B, C13

A

V

S5STOPLIGHTSW

JUNCTION

CONNECTOR

J43

2D2

IG

Y- B

15ATHROTTLE

FROM POWER SOURCE SYSTEM (SEE PAGE 64)

1D1

20

B

IG29

Y-B

Y-B

1 3 2

VEHICLE SPEED SENSOR(COMBINATION METER)

V 2

EB19EB110EB111

BR

R-G

R-L

IX17IN11

BR

R-G

R-L

A

A

BR

SB

R-L

R-L

J17

16 IX1

SB

IX18

BR

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The engine control system utilizes a microcomputer and maintains overall control of the engine, transmission etc. An outlineof the engine control is given here.

1. INPUT SIGNALS

(1) Engine coolant temp. signal circuit

The engine coolant temp. sensor detects the engine coolant temp. and has a built-in thermistor with a resistance whichvaries according to the engine coolant temp. The engine coolant temp. is input into TERMINAL THW of the enginecontrol module as a control signal.

(2) Intake air temp. signal circuit

The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as acontrol signal to TERMINAL THA of the engine control module.

(3) Oxygen sensor signal circuit

The oxygen density in the exhaust emission is detected and is input as a control signal from the heated oxygen sensorsto TERMINALS OXL1, OXR1, OXL2, OXR2 of the engine control module.

(4) RPM signal circuit

The camshaft position is detected by the camshaft position sensor and is input into TERMINAL G2 of the engine controlmodule as a control signal. Also, the engine RPM is detected by the crankshaft position sensor and the signal is inputinto TERMINAL NE+ of the engine control module.

(5) Throttle position sensor signal circuit

The throttle position sensor detects the throttle valve opening angle as a control signal, which is input into TERMINALVTA of the engine control module.

(6) Vehicle speed circuit

The vehicle speed sensor (Combination meter) detects the vehicle speed, and the signal is input into TERMINAL SPDof the engine control module via the combination meter.

(7) Battery signal circuit

Voltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned on, thevoltage for engine control module start up power supply is applied through the EFI or ECD relay, to TERMINALS +B,+B1 of the engine control module. The current from the IGN fuse flows to TERMINAL IGSW of the engine controlmodule, and voltage is constantly applied to TERMINAL +BM.

(8) Intake air volume signal circuit

The intake air volume is detected by the mass air flow meter, and is input as a control signal to TERMINAL VG of theengine control module.

(9) Stop light SW signal circuitThe stop light SW is used to detect whether the vehicle is braking or not, and the signal is input into TERMINAL STP ofthe engine control module as a control signal.

(10)Starter signal circuit

To confirm whether the engine is cranking, the voltage applied to the starter motor when the engine is cranking isdetected, and is input into TERMINAL STA of the engine control module as a control signal.

(11) Engine knock signal circuit

Engine knocking is detected by the knock sensors, and is input into TERMINALS KNKL, KNKR of the engine controlmodule as a control signal.

SYSTEM OUTLINE

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2. CONTROL SYSTEM

SFI systemThe SFI system monitors the engine condition through the signals input from each sensors to the engine control module.The control signal is sent to the engine control module TERMINALS #1, #2, #3, #4, #5, #6, #7, #8 to operate the injector(Fuel injection). The SFI system controls the fuel injection by the engine control module in response to the drivingconditions.

ESA systemThe ESA system monitors the engine condition through the signals input from each sensors to the engine control module.The best ignition timing is decided according to this data and the data memorized in the engine control module. Thecontrol signal is output to TERMINALS IGT1, IGT2, IGT3, IGT4, IGT5, IGT6, IGT7, IGT8, and these signals control theigniter to provide the best ignition timing.

Heated oxygen sensor heater control systemThe heated oxygen sensor heater control system turns the heater on when the intake air volume is low (Temp. of exhaustemission is low), and warms up the heated oxygen sensors to improve their detection performance. The engine controlmodule evaluates the signals from each sensors, and outputs current to TERMINALS HTL, HTR, HTL2, HTR2 to controlthe heater.

Fuel pump control systemThe engine control module supplies current to TERMINAL FPC, and controls the operation speed of the fuel pump withthe fuel pump control ECU.

ACIS

The ACIS includes a valve in the bulkhead separating the surge tank into two parts. This valve is opened and closed inaccordance with the driving conditions to control the intake manifold length in two stages, for increased engine output in allranges from low to high speeds.

ETCS-iThe ETCS-i controls the engine output at its optimal level in accordance with the opening of the accelerator pedal, underall driving conditions.

3. DIAGNOSIS SYSTEM

When there is a malfunction in the engine control module signal system, the malfunctioning system is recorded in thememory. The malfunctioning system can be found by reading the code displayed on the malfunction indicator lamp.

4. FAIL-SAFE SYSTEM

When a malfunction has occurred in any system, there is a possibility of causing engine trouble due to continued controlbased on that system. In that case, the fail-safe system either controls the system using the data (Standard values)recorded in the engine control module memory, or else stops the engine.

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EFI OR ECD RELAY

1-3 : Closed with ignition SW at ON or ST position

E2 ENGINE COOLANT TEMP. SENSOR

1-2 : Approx. 16.2 k (-20 C, -4 F): Approx. 2.45 k (20C, 68F): Approx. 0.32 k (80C, 176F)

E6 (B), E8 (D), E9 (E) ENGINE CONTROL MODULE

BATT-E1 : Always 9.0- 14.0 volts+BM-E1 : Always 9.0- 14.0 volts

IGSW-E1 : 9.0- 14.0 volts with ignition SW at ON or ST position+B, +B1-E1: 9.0- 14.0 volts with ignition SW at ON or ST position

VC-E2 : 4.5- 5.5 volts with ignition SW onVTA2-E2 : 2.0- 2.9 volts with ignition SW on and throttle valve fully closed

: 4.6- 5.0 volts with ignition SW on and throttle valve fully openedVTA-E2 : 0.4- 1.0 volts with ignition SW on and throttle valve fully closed

: 3.2- 4.8 volts with ignition SW on and throttle valve fully openedVPA-E2 : 0.25- 0.9 volts with ignition SW at on and accelerator fully closed

: 3.2- 4.8 volts with ignition SW at on and accelerator fully openedVPA2-E2 : 1.8- 2.7 volts with ignition SW at on and accelerator fully closed

: 4.7- 5.0 volts with ignition SW at on and accelerator fully openedTHA-E2 : 0.5- 3.4 volts with idling, intake air temp. 20C (68F)THW-E2 : 0.2- 1.0 volts with idling, coolant temp. 80C (176F)STA-E1 : 6.0 volts or more with crankingTE1-E1 : 9.0- 14.0 volts with ignition SW on

W-E1 : 9.0- 14.0 volts with idling: 0- 3.0 volts with ignition SW on

: PARTS LOCATION

Code See Page Code See Page Code See Page

A14 38 F13 42 J21 41

A40 40 H5 39 J22 41

C1 38 H6 39 J23 41C3 38 H7 39 J24 41

C8 A 40 H8 39 J25 41

C9 B 40 I9 39 J43 41

C12 A 40 I10 39 J44 41

C13 B 40 I11 39 K1 39

D1 38 I12 39 K2 39

D7 40 I13 39 M1 39

E2 38 I14 39 P1 39

E5 A 40 I15 39 S5 41

E6 B 40 I16 39 T2 39

E7 C 40 I18 40 T3 39

E8 D 40 J7 41 T10 41

E9 E 40 J14 41 V1 39

F6 38 J16 41 V2 39

F7 40 J17 41 V4 39

F12 42 J18 41 V5 39

SERVICE HINTS
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: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR

Code See Page Junction Block and Wire Harness (Connector Location)

1C

1D 23 Engine Room No.2 Wire and Engine Room J/B (Engine Compartment Left)

1E

1N 23 Engine Room No.3 Wire and Engine Room J/B (Engine Compartment Left)

2B

2D26 Dash Wire and Cowl Side J/B LH (Left Kick Panel)

2P 28 Instrument Panel Integration Wire and Cowl Side J/B LH (Left Kick Panel)

: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS

Code See Page Joining Wire Harness and Wire Harness (Connector Location)

EB1

EB346 Engine Wire and Transmission Wire (On the Transmission)

EC1 46 Engine No.2 Wire and Engine Wire (On the Transmission)

ID1 48 Dash Wire and Floor Wire (Left Kick Panel)

IG1

IG2

IG3 50 Engine Room No.2 Wire and Dash Wire (Behind the Combination Meter)

IG4

IJ1 50 Dash Wire and Detector Wire (Instrument Panel Center)

IN1

IO1 52 Engine Wire and Dash Wire (Behind the Glove Box)

IO2

IU3 52 Instrument Panel Integration Wire and Dash Wire (Behind the Glove Box)

IW1 54 Engine Room No.2 Wire and Dash Wire (Behind the Glove Box)

IX1 54 Instrument Panel Integration Wire and Engine Wire (Behind the Glove Box)

BB1 56 Floor Wire and Fuel Tank Wire (Near the Fuel Tank)

: GROUND POINTS

Code See Page Ground Points Location

EC 46 Rear Bank of Right Cylinder Head

EE 46 Front Left Side of Fender Apron

IF

IG48 Set Bolt of Cowl Side J/B LH

BM 56 Left Rear Side Quarter Panel

: SPLICE POINTS

Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points

E4 46 Engine Room No.2 Wire E11 46 Engine Wire

E7 46 Engine Wire I2 50 Engine Room No.2 Wire

E8 I5

E946 Transmission Wire

I14 50 Dash Wire

E10 46 Engine Wire I15
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2008-04-09_210412_00landcruiser

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