section 55 chapter 3 - dmcpubs.com

Section 55

Chapter 3

6-12850NH

HITCH CONTROLLER

Calibration and Fault Codes

SECTION 55 - HITCH CONTROLLER - CHAPTER 3

55-2

TABLE OF CONTENTS

HITCH CONTROLLER CALIBRATION .............................................................................................................. 55-4Setup Process ................................................................................................................................................. 55-4Requirements For Calibration ....................................................................................................................... 55-4Hitch Setup Main Menu ................................................................................................................................. 55-4

Hitch Calibration Menu .................................................................................................................................... 55-5Hitch Setting Menu ........................................................................................................................................ 55-10Hitch View Menu ........................................................................................................................................... 55-12

FAULT CODE RETRIEVAL .............................................................................................................................. 55-13

HITCH FAILURE MODES ................................................................................................................................ 55-15Calibration Fault Codes ................................................................................................................................ 55-15Performance Fault Codes ............................................................................................................................. 55-15

SYMPTOM BASED FAULTS - NO FAULT CODES ......................................................................................... 55-16COMM FAULT / HITCH OFF LINE ............................................................................................................... 55-16HITCH WILL NOT RAISE ............................................................................................................................. 55-19HITCH WILL NOT LOWER ........................................................................................................................... 55-22HITCH WILL NOT RAISE WHEN REMOTE RAISE SWITCH IS OPERATED ............................................. 55-24HITCH WILL NOT LOWER WHEN REMOTE LOWER SWITCH IS OPERATED ........................................ 55-24HITCH WILL NOT CAPTURE AT START UP .............................................................................................. 55-27HITCH RAISES ON ITS OWN WHEN TRACTOR IS MOVING AND LOWERS WHEN TRACTOR STOPS MOVING ....................................................................................................................................................... 55-27

HITCH CONTROLLER FAULT CODES ........................................................................................................... 55-28FAULT CODE HITCH 1010 Hitch Up/Down Switch Failure .......................................................................... 55-28FAULT CODE HITCH 1020 Slip Select Switch Failure ................................................................................. 55-28FAULT CODE HITCH 1030 Slip Set Switch Failure ..................................................................................... 55-29FAULT CODE HITCH 3010 Transmission Speed Sensor Failed ................................................................. 55-30FAULT CODE HITCH 3020 Wheel Slip Sensing Error ................................................................................. 55-31FAULT CODE HITCH 3030 Engine Speed Error .......................................................................................... 55-32FAULT CODE HITCH 4019 Right Draft Pin Failure ...................................................................................... 55-33FAULT CODE HITCH 4029 Left Draft Pin Failure ........................................................................................ 55-34FAULT CODE HITCH 4039 Both Draft Pins Failed ...................................................................................... 55-35FAULT CODE HITCH 6014 Hitch Lower Solenoid Failed Open Or Shorted To Ground .............................. 55-36FAULT CODE HITCH 6015 Hitch Lower Solenoid Shorted To 12 Volts ...................................................... 55-37FAULT CODE HITCH 6024 Hitch Raise Solenoid Failed Open Or Shorted To Ground .............................. 55-38FAULT CODE HITCH 6025 Hitch Raise Solenoid Shorted To 12 Volts ....................................................... 55-39FAULT CODE HITCH 8001 Battery Voltage Less Than 9.8 Volts ................................................................ 55-40FAULT CODE HITCH 8002 Battery Voltage Too High ................................................................................. 55-40FAULT CODE HITCH 9301 Hitch Raise Valve Threshold Is Too High During Calibration ........................... 55-41FAULT CODE HITCH 9302 Hitch Raise Valve Threshold Is Too Low During Calibration ........................... 55-41FAULT CODE HITCH 9303 Full Raise Current Out Of Range ..................................................................... 55-42FAULT CODE HITCH 9304 Hitch Position Is Not At Maximum .................................................................... 55-43FAULT CODE HITCH 9306 Hitch Lower Valve Threshold Is Too High During Calibration .......................... 55-44FAULT CODE HITCH 9307 Hitch Lower Valve Threshold Is Too Low During Calibration ........................... 55-44FAULT CODE HITCH 9308 Time Allowed For Calibration Has Expired ...................................................... 55-45FAULT CODE HITCH 9309 Hitch Position At The Bottom Of Travel Is Not Within Specification ................. 55-45FAULT CODE HITCH 9310 Range Of The Hitch Position Is Not Within Specification ................................. 55-46FAULT CODE HITCH 9311 Ratio Of Position Command To Rockshaft Range Is Not Within Specification 55-47FAULT CODE HITCH 9312 Selected Pin Is Connected To The Left Side Rather Than The Right Side ..... 55-48FAULT CODE HITCH 9313 Hitch Is Calibrated As Position Only ................................................................ 55-48FAULT CODE HITCH 9314 Right Draft Pin No Load Offset Voltage Out Of Range .................................... 55-49FAULT CODE HITCH 9315 Left Draft Pin No Load Offset Voltage Outside Normal Range ........................ 55-50


55-3

FAULT CODE HITCH 9316 ‘No Load’ Offset Voltage Out Of Range For Both Draft Pins ........................... 55-51FAULT CODE HITCH 9317 Hitch Controller Requires Calibration ............................................................... 55-51FAULT CODE HITCH 9318 Engine Speed Too Low For Hitch Lower Calibration ....................................... 55-51FAULT CODE HITCH 9319 Hitch Is Calibrated As Position Only ................................................................ 55-52FAULT CODE HITCH 9320 Calibration Aborted Due To Tractor Moving ..................................................... 55-52FAULT CODE HITCH 9321 No Engine Speed During Hitch Calibration ...................................................... 55-52FAULT CODE HITCH 10030 Controller Memory Failure .............................................................................. 55-53FAULT CODE HITCH 10060 Controller Relay Failure Or Hitch Valves Shorted To Power ......................... 55-53FAULT CODE HITCH 10061 Hitch Raise/Lower Solenoids Circuit Failed Open ......................................... 55-54FAULT CODE HITCH 10071 Controller Internal Failure ............................................................................... 55-54FAULT CODE HITCH 10072 Controller Internal Failure ............................................................................... 55-55FAULT CODE HITCH 10090 Controller Internal Failure ............................................................................... 55-55FAULT CODE HITCH 11010 Load Command Potentiometer Failure .......................................................... 55-55FAULT CODE HITCH 11020 Drop Rate Command Potentiometer Failure .................................................. 55-56FAULT CODE HITCH 11030 Travel Range Potentiometer Failure .............................................................. 55-56FAULT CODE HITCH 11050 Upper Limit Potentiometer Failure ................................................................. 55-57FAULT CODE HITCH 11069 Rockshaft Position Potentiometer Is Outside Normal Operating Range ........ 55-58FAULT CODE HITCH 11070 Hitch Position Command Potentiometer Failure ............................................ 55-59FAULT CODE HITCH 12011 Communication Lost With The Armrest Controller ......................................... 55-60FAULT CODE HITCH 12031 Communication Lost With The Data Bus ....................................................... 55-62FAULT CODE HITCH 12041 Communication Lost With The Instrument Controller .................................... 55-63FAULT CODE HITCH 52230 Hitch Position Is Above Upper Limit Setting ................................................... 55-65FAULT CODE HITCH 52260 Up/Down Fender Switch Failure .................................................................... 55-66FAULT CODE HITCH 65535 Memory Not Cleared From The Factory ........................................................ 55-66

SCHEMATIC FOLDOUTS ................................................................................................................................ 55-67Can Data Bus - Front to Rear Harness ......................................................................................................... 55-67Instrument Cluster ......................................................................................................................................... 55-69Armrest Controller (ARU) Section 46 ............................................................................................................ 55-71Armrest Controller (ARU) Section 47 ............................................................................................................ 55-73Armrest Controller (ARU) Section 48 ............................................................................................................ 55-75Armrest Controller (ARU) Section 49 and Hitch Control System (EDC) ....................................................... 55-77Hitch Control System (EDC) ......................................................................................................................... 55-79


55-4

HITCH CONTROLLER CALIBRATION

Setup Process

Requirements For Calibration

NOTE: The standard instrumentation and armrestcontrollers must be calibrated before the hitchcontroller can be calibrated.

NOTE: The hitch must be re calibrated anytime thatany electrical or hydraulic hitch component isrepaired or replaced.

• Before starting the hitch calibration procedure,check the wiring harness and components fordamage or loose connections. Replace or repairany damaged part as necessary.

• There must not be an implement mounted to thethree point hitch during calibration.

• Lengthen both the right hand and left hand lift linksso that a minimum of 50 mm (2 inches) of thread isvisible.

• Be sure that the hitch is free to move all the way between the lift cylinders minimum and maximumlimits. Make sure that no interference exists during h i tch movement (such as a quick couplercontacting a draw bar). Be sure there are nopersons in the back of the tractor during hitchcalibration as the hitch will raise and lowerduring the calibration process.

• Do not calibrate the hitch with the tractor moving.

• The transmission oil must be warmed to more than 38°C (100°F).

• The engine speed must be 1600 RPM or higherduring calibration.

Hitch Setup Main Menu

Hitch setup / calibration is performed from theprogrammable display on the standard monitor.

RD97H050

Once the requirements for calibration have beenmet, hitch calibration can begin.NOTE: Programming can only be entered within thefirst 10 seconds of turning the key switch to the ONposition.

To get to the hi tch setup main menu, do thefollowing:

1. Start the tractor.

2. Push the program button and hold for twoseconds within the first ten seconds after turningon the key switch. A short beep will indicate thatthe program mode has been accessed and thedisplay will read INST SET MENU.

3. Push the DECR key three times. The display willread HITCH SET MENU.

4. Push the program key to enter the main menu.

When the Hitch Set main menu is entered, the setupoptions include the following:

1. HITCH CAL-Capability to calibrate the hitchsystem.

A. Calibration of systems configuration.

B. Calibration of systems parameters


55-5

2. HITCH SETTINGS-Capability to set user settingsof certain parameters.

3. HITCH VIEW-Capability to view informationabout the controller.

The HITCH CAL will be the first option upon entryinto the setup main menu. Press the INC or DECRkey to move through the main menu which includesHITCH CAL, HITCH SETTINGS and HITCH VIEW.To enter the submenu of your choice, press PROG.

RD98H019

NOTE: If any fault codes are recorded, they must becorrected before programming is possible.

Hitch Calibration MenuThe Hitch Cal menu allows the user to calibrate thesystem parameters. These parameters include thetractor type, number of draft pins, draft pin offsetvoltage, position feedback potentiometer and valvethresholds.

STEP 1The lower line of the display will have the word“Type”. The tractor type must be entered in the topline of the display. If the tractor has been previouslycalibrated, the top line will have that calibrationnumber. If the controller has not been calibrated, thedisplay will default to the number “1”.

RD98H034

1. Use the INCR or DECR keys to scroll through thecylinder sizes to find the size that applies to yourtractor.

1 = Two 3.5 inch (88.9 mm) ID cylinders.2 = Two 3.75 inch (95.2 mm) ID cylinders.3 = One 3.75 (95.2 mm) and One 4.125 (104.8mm) ID cylinders.4 = Two 4.125 (104.8 mm) ID cylinders.

2. When the correct cylinder size is found, pressthe PROG key to enter the selection.


55-6

STEP 2At this step, the controller is looking for the number ofdraft pins in the system.

1. If the hitch controller detects two draft pins, andthe armrest controller is calibrated for draft, thehitch controller will assume there are two draftpins and go to Step 3.

2. If the armrest controller is calibrated for positiononly, the controller will assume there are no draftpins and go to Step 3. Fault code HITCH 9313will be recorded if draft pins are detected.

NOTE: Fault code HITCH 9313 will not stop thecalibration process.

3. If neither item 1 or 2 are true, the lower line of thedisplay will read “Pins”. This means that thenumber of draft pins must be programed into thecontroller.

4. If the hitch controller has been previouslycalibrated, the top line will have that calibrationnumber. I f the contro l ler has never beencalibrated, the top line of the display will read “0”.

5. Use the INCR or DECR keys to scroll through thenumber of draft pins.

6. When the correct number of draft pins isdisplayed on the upper line of the display, pressthe PROG key to select that number of draft pins.The system will go to Step 3 after the selectionhas been made

NOTE: If a failure is detected, the system will go toStep 10.

STEP 3The display will now read “Lower Hitch”. It will allowyou to lower the hitch. Be sure the engine is at 1600RPM minimum.

RP98H031

1. To lower the hitch, press and hold the PROGkey. The hitch will lower as long as the PROGkey is depressed. While the hitch is lowering,the display will change to “Lower Hitch ON”.

2. When the PROG button is released, the systemwill go to Step 4.

3. To abort calibration, press either the INCR orDECR key. The system will go to Step 9.



55-7

STEP 4The display will now read “Cal Raise”. This will allowyou to calibrate the raise threshold of the hitch valve.

1. To calibrate the raise portion of the hitch valve,press the “PROG” key. The controller will startthe raise calibration. Whenever current is appliedto the coil, the display will change to “Cal RaiseON”.

NOTE: Calibration may take a few minutes. Whilecalibration is taking place, the “ON” will flashintermittently.

RD98H032

RP98H033

2. When the controller has found the upperthreshold of the valve, the hitch will move tothe maximum raised position. The system willthen go to Step 5.



STEP 5

RP98H021

The display will read ENG SPD. If the engine RPM isat or above 1600 RPM, there will be an asterisk (*)on the display. If there is no asterisk, increase enginespeed until the asterisk appears. Then press thePROG key.

NOTE: If the program key is pressed without anasterisk on the display, Cal Fail will appear on thedisplay and calibration can not continue.

STEP 6The display will now read “Cal Lower”. This will allowyou to calibrate the lower threshold of the hitch valve.

1. To calibrate the lower portion of the hitch valve,press the “PROG” key. The controller will startthe lower calibration. Whenever current isapplied to the coil, the display will change to “CalLower ON”.

RP98H022

2. The hitch will move down for approximately0.8 seconds as soon as the PROG key isreleased. The hitch will then stop while thehitch valve finds it’s lower threshold. Thenthe hitch will move down to the lower limit.

NOTE: Calibration may take a few minuets. Whilecalibration is taking place, the “ON” will flashintermittently.


55-8


NOTE: Be sure the engine is at 1600 RPMminimum.


STEP 7The display will now read “Lower Limit ON”. Thesystem wants you to acknowledge that the hitch hasreached the lower limit.

1. Push the “PROG” key to acknowledge that thehitch is at the lower limit. The system will then goto Step 8.

RD98H023


NOTE: If the PROG key is not pressed within 6minutes, the calibration will fail and the system will goto Step 9.


STEP 8

RD98H024

The display will now read “Cal Done”. This indicatesthat h i tch cal ibrat ion has been successfu l lycompleted.

1. Press the “PROG” key to return to the mainmenu.

2. HITCH CAL will be on the display. Press theINCR key to go to HITCH EXIT menu. Press thePROG key to exit calibration.

RP98H020


55-9

STEP 9If the display reads “Cal Aborted”. This means thatthe calibration process was aborted at some point.

1. Press the “PROG” key to return to the mainmenu.

2. There are several things that can cause thecalibration to be aborted.

A. The tractor starts moving.

B. No engine speed.

C. The operator aborted calibration.

STEP 10When the display reads “Cal Fail”, it means that afailure has occurred during the calibration process.The controller will now be in the halt mode.

1. Press the “PROG” key to go back to the mainmenu.

NOTE: Entry into hitch calibration will not be alloweduntil the key switch has been cycled off, then on.


55-10

Hitch Setting MenuGo to the Hitch Setting menu as shown under HitchSetup Main Menu. The Hitch Setting Menu allowsyou to set certain performance parameters.

RD98H018

NOTE: Each parameter has a default setting thatwould be preferred under normal operatingconditions.

STEP 11The lower line of the display will read “Drop 1”. Thiswill allow you to set the slowest drop rate of the hitch.The three choices are 12, 16 and 20 second. Thedefault setting is 12 seconds.

RD98H029

1. Press the INCR or DECR key to scroll throughthe selections.

2. Press the PROG key to select your choice ofdrop rate. The system will go to the next step.

STEP 12The lower line of the display will read “R/D Rate”(raise/drop rate). The top line of the display will showthe present user setting for this (either yes or no). IfYES is selected, the system will use the drop ratesetting to set the raise rate. If NO is selected, thehitch will raise to the rate specified in Step 13. Thedefault setting for this step is NO.

RD98H035

1. Press the INCR or DECR key to toggle betweenyes and no.

2. Press the PROG key to select your choice. IfYES is selected, the system will go to Step 14. IfNO is selected, the system will go to Step 13.

STEP 13The lower line of the display will read “Raise”. Thiswill allow you to choose the approximate desiredtime to fully raise the hitch. There are five choices forthis: 2, 4, 6, 8, and 10 seconds. The default time is 2seconds.

RD98H028

1. Press the INCR or DECR key to change theselection.

2. Press the PROG key to choose your selection.The system will go to Step 14 when your choiceis made.


55-11

STEP 14The lower line of the display will read “Hitch Up”. Thiswill allow you to choose the approximate desiredpercentage of hitch travel that will be used fordetermining when the hitch is up for the Auto-MFDand Auto -DIFFLOCK (disengagement) functions.The choices are 60, 70, 80 and 90%. The default is70%.

RD01A046

1. Press the INCR or DECR key to change theselection.

2. Press the PROG key to choose your selection.The system will go to Step 15 when your choiceis made.

STEP 15The display will now read “Done Settings”. Thisind ica tes tha t the user se t t i ngs have beensuccessfully programed.

RD98H036

1. Press the PROG key to return to HITCH SET,the main menu.

RP98H025

2. Press the DECR key to go to the HITCH VIEWmenu.


55-12

Hitch View MenuThe Hitch View Menu allows the user to see theversion number of the software presently programedinto the controller. Press the PROG key with HITCHVIEW on the display.

STEP 16

RD98H026

The top line of the display will read “VER #1”. Thisindicates that the bottom line of the display will havethe first two characters of the version number.

STEP 17

RD98H027

Press the PROG key to go to the next part of thenumber. The top line of the display will read “VER#2”. This indicates that the bottom of the display willhave the last two characters of the version number.Press the PROG key to go to the next step.

STEP 18

RD98H025

The display will now read “HITCH VIEW” Thisindicates that this menu is completed.

Press DECR key to go to HITCH EXIT.

STEP 19

RD98H037

Press the PROG key to exit the hitch menus

STEP 20Cycle the key switch OFF, then ON. Check to see ifthere are any fault codes. Erase any fault codes ifthey exist.


55-13

FAULT CODE RETRIEVAL

Controllers can be checked for fault codes at anytime. Up to 10 fault codes can be stored in eachcontroller.

STEP 21

RD98F032

With the key switch in the ON or RUN position, pressand hold the DIAG key on the programmable displaykey board to enter the controller selection screen.The display will read INST DIAG MENU.

STEP 22

RD98F033

Use the DECR key to scroll through the differentcontrollers: INST (standard instrumentation) - ENG(engine) - TRANS (transmission) - ARM (armrest) -HITCH - AUX (remote hydraulics) - PTO (power takeoff) - PERF (performance monitor).

STEP 23

RD98F034

When the required controller is displayed, press thePROG key. If a controller is selected that is not onthe Data Bus (does not exist), the display will readCOMM ERR.

STEP 24

RD98F035

Use the INCR and DECR keys to scroll through the10 possible fault codes. The controller name will beat the top of the display. The fault code and whichnumber that fault is (01 to 10), will be at the bottom ofthe display.


55-14

STEP 25

RD98F035

To erase the fault codes from a controller, press andhold both the INCR and DECR keys for 10 seconds.

NOTE: All the fault codes for that controller will beerased.

STEP 26

RD98F036

When the fault codes are erased, the display willreturn to the main screen for that controller.

STEP 27

RD98F033

Another controller can be selected at this time byusing the INCR and DECR keys to scroll through thecontroller list as in Step 21.

STEP 28

RD98F038

To exit the select controller screen, scroll until EXITis displayed and press the PROG key. This will returnyou to normal operation.


55-15

HITCH FAILURE MODES

There are failures and combination of failures that cause the hitch to be fully inoperable. These are as follows:

MEMORY FAILURES - If there is a memory failure, the hitch will not operate and the green LED on the controller(At the rear of the cab) will be ON. There will not be a fault code recorded in the memory.

HALT CONDITIONS - Halt failure conditions are shown in the diagnostic codes. Hitch motion is fully disabled. Also,if a failure is detected during calibration, the system will go to this mode and the actual failure will be recorded.

DOUBLE FAILURES INVOLVING THE UP/DOWN SWITCH - When the up/down switch and a second limp homefailure occur, hitch motion is available only through the remote fender switches (When equipped).

FAILURES THAT RESULT IN NO FAULT BEING STORED

1. Hitch is above the upper limit.

2. Hitch will not go all the way down or up. Position or control potentiometers could be loose. Valve parametersmay have shifted.

3. Hitch does not lower or raise. Possible hydraulic contaminant in the valve prevents the spool from opening.

Calibration Fault CodesHitch system problems that exists at start up will prevent entry into the calibration mode. These faults can be readthrough the diagnostic function of the instrumentation display. Faults that occur during the calibration process willcause calibration to stop.

Performance Fault CodesThere are four non - normal modes of operation: HALT, LIMP, DEGRADED 2 and DEGRADED 1. Different failureswill generate different modes of operation as shown in the fault code listing. The following shows the differencesbetween these modes.

HALT (H) - The hitch is totally disabled and no electrical actuation is possible.

LIMP (L) - The hitch can be recorded only up or down from the UP/DOWN switch or from the remote fender switch.Only momentary motion is allowed and the tractor must be stopped.

DEGRADED 2 (D2) - Due to a failure, the draft mode is not a valid mode.

DEGRADED 1 (D1) - The hitch is fully operational with default values for certain variables.


55-16

SYMPTOM BASED FAULTS - NO FAULT CODES

COMM FAULT / HITCH OFF LINEMeaning:The hitch controller is not being powered or the Data Bus has a problem.

Possible failure mode:1. Fuse 39 has failed.2. The harness routing around rear controllers is loose or not installed against the cab.3. Hitch raise and lower solenoid power supply wire from C058-01 is shorted to chassis ground. Fuse 38 will be

failed.4. The hitch power supply wire to C058-12 is shorted to chassis ground. Fuse 38 will be failed.5. The hitch power supply wire to C058-12 is failed open.6. Hitch controller ground wire to C058-11 is failed open.7. C059-4 Data Bus low8. C059-5 Data Bus high

Background:The Instrument display monitors the hitch controller and measures the hitch controller through the Data Bus. If thehitch controller is not powered or the Data Bus has a problem, the Display will read COMM ERR and the hitch willnot work.

Solenoid information:Approximately 5.1 ohms at - 40 C (-40 F)Approximately 6.9 ohms at 25 C (77 F)Approximately 9.5 ohm at 100 C (212 F)

Wiring information:

NOTE: Always inspect connector ends for damaged, bent or dislocated pins when troubleshooting.

Hitch raise and lower circuit:

Power supply to hitch controller:

C058-12 ---> splice(T16) --->C314-B --->splice to center terminal B, Raise Left and Lower Center Remote HitchSwitches.

splice(T16) --->C10-9---> to fuse 39splice(T16) --->C315-B --->center terminal B Lower Right Remote Hitch Switch

Controller ground circuit:See Schematic Poster

Corrective action:

STEP 1 - Check fuse 39Check fuse 39.-- OK - if fuse is not failed, go to Step 3.-- NOT OK - go to Step 2.

STEP 2 - Replace fuse 39Replace fuse 39.Start the engine.Raise and lower the hitch several times.-- If the fuse failed, go to Step 4.-- If the fuse fails, but not right away, go to Step 4.-- If the fuse did not fail, return tractor to service.

C058-01 --->C335-2---> splice ---> C151-1 (Hitch Raise solenoid) C151-2 ---> C058-02splice ---> C152-1 (Hitch Lower solenoid) C152-2 ---> C058-03


55-17

STEP 3 - Check hitch controller LED lightRemove rear controller cover.Check wire harness routing of the controllers and installed against the cab (Make sure wires are not loose ordraped in front of controllers).With the key ON check the LED light on the hitch controller.-- If the LED lamp is OFF, the hitch controller is not being powered, go to Step 10.-- If the LED lamp is flashing, the hitch controller has power up correctly, go the Step 17-- If the LED lamp is ON steady, the hitch controller may have a software, power or internal hardware problem.

1. Reload hitch software in to hitch controller with service tool.2. Replace hitch controller, go to Step 19.

STEP 4 - Check hitch power supply wire C058-12 for short to groundMeasure the resistance between C058-02 and chassis ground. It must be more than 100k ohms. Turn key OFF.-- OK - go to Step 5.-- NOT OK - install a new wire.

STEP 5 - Raise solenoid coil resistance and wiring checkTurn the key to the OFF position.Measure the resistance between pin C058-01 and C058-2.-- OK - go to Step 7.-- NOT OK - wiring or solenoid problem. Use CAS-2577 Cab Lift Tool and lift the tractor cab. Go to Step 6.

STEP 6 - Raise solenoid coil resistance checkDisconnect the hitch raise solenoid at connector C151.Measure the solenoid resistance between pin 1 and pin 2.-- OK - go to Step 7.-- NOT OK - replace the solenoid.

STEP 7 - Lower solenoid coil resistance and wiring checkMeasure solenoid resistance between pin C058-01 to C058-3.-- OK - go to Step 8.-- NOT OK - wiring or solenoid problem. Use CAS-2577 Cab Lift Tool and lift the tractor cab. Go to Step 8.

STEP 8 - Lower solenoid coil resistance checkDisconnect hitch lower solenoid at connector C152.Measure solenoid resistance between pin 1 to pin 2.-- OK - go to Step 9.-- NOT OK - Replace solenoid.

STEP 9 - Raise and Lower solenoid wiring checkDisconnect both the raise and lower solenoids.Measure the resistance between C058-01 and chassis ground. It must be more than 100k ohms.-- OK - go to Step 10.-- NOT OK - install new wire from C058-01 to C151-1 and C152-1.

STEP 10 - Check power supply wire C058-12Turn key ON.Check pin C058-12 for 12 volts.-- OK - go to Step 15.-- NOT OK - Step 11.


55-18

STEP 11 - Check power supply wire C058-12 for open circuitMeasure the resistance between C058-12 and fuse 39 must be less than 10 ohms.-- OK - go to Step 16.-- NOT OK - go to Step 12 to find open circuit.

STEP 12 - Check wiringMeasure the resistance between C058-12 and splice T16 must be less than 10 ohms.-- OK - go to Step 13.-- NOT OK - install new wire.

STEP 13 - Check wiringMeasure the resistance between splice T16 and C010-9 must be less than 10 ohms.-- OK - go to Step 14.-- NOT OK - install new wire.

STEP 14 - Check wiringMeasure the resistance between C010-9 and Fuse 39 must be less than 10 ohms.-- OK - go to Step 15.-- NOT OK - install new wire.

STEP 15 - Check hitch controller ground supply wire C058-11Measure the resistance between C058-11 and chassis ground, it must be less than 10 ohms.-- OK - go to Step 16.-- NOT OK - install new ground wire.

STEP 16 - Test hitch controllerConnect connector C058 to the hitch controller.Turn key ON.-- OK - the LED light on the hitch controller is flashing ON and OFF.-- NOT OK - Double check power and ground supply, then replace hitch controller, go to Step 19.

STEP 17 - Check Data Bus lowC059-4 Data Bus low for loose connections or bent pins.Measure the resistance between the hitch Data Bus connection and the transmission controller Data Busconnection, it must be less than 10 ohms.

STEP 18 - Check Data Bus highC059-5 Data Bus high for loose connections or bent pins.Measure the resistance between the hitch Data Bus connection and the transmission controller Data Busconnection, it must be less than 10 ohms.

STEP 19 - Replace hitch controllerMake sure wire harness routing of the controllers is installed against the cab (Make sure the wires are not loose ordraped in from of controllers).Write the fault code on the failed controller.Install and calibrate a new controller.

NOTE: See schematic sections 51 and 52 at the rear of this section.


55-19

HITCH WILL NOT RAISEMeaning:The hitch system has one of the following problems that can not be detected by the hitch controller.

Possible failure mode:1. Low or no regulated pressure.2. PFC pump supply / pressure problem.3. The 8 volt power supply wire from the hitch controller C059-6 to the rockshaft sensor C1555-A is shorted to 12

volts (Fault code PTO 11069 may be active).4. Hitch raise solenoid valve coil is loose or fell off but is still connected electrically.5. Hitch raise solenoid is mechanically stuck in the OFF position.6. The hitch lower solenoid is mechanically stuck in the ON position.7. The wire from hitch controller C058-02 to hitch raise solenoid C151-2 is shorted to power.8. The wire from the remote lower switch to the hitch controller C058-10 is shorted to power (Fault code HITCH

52260 may be active).

Background:This problem can not be detected by the hitch controller.


Wiring information:


C059-6 ---> C155-A (Rockshaft sensor).C058-02----> C151-2 (Hitch Raise solenoid) C151-1 ---> C058-01 (12 volt power supply).C058-10 --->splice T15 --->C314-C to terminal B on lower center and raise left hand remote switch.C058-10 ---> splice T15--> C315-A ---> C313A to lower right hand remote switch.

IMPORTANT: The hitch must be calibrated whenever a hitch component is replaced.

Corrective action:

STEP 1 - Check regulated and remote valve pressureCheck regulated pressure with the TRANS VIEW menu on the display.Check high pressure standby pressure through the remote valves.-- NOT OK - correct hydraulic problem.-- OK - go to Step 2.

STEP 2 - Disconnect hitch remote raise/lower switchDisconnect all remote hitch raise/lower switches. Start tractor and test hitch.-- NOT OK - Go to Step 3.-- OK - Hitch raises and lowers correctly, replace failed switch.

STEP 3 - Measure controller output voltage to rockshaft sensor C155-CDisconnect the rockshaft sensor at connector C155.Turn the key to the ON position.Measure controller output voltage at C155-A to C155-C. It must be approximately 8 volts.-- NOT OK - Connect connector C155 to the remote hitch switch and go to Step 4.-- OK - Connect connector C155 to the rockshaft sensor and go to Step 5.


55-20

STEP 4 - Measure controller output voltage at pin C059-6Remove the controller cover from the rear of the tractor.Disconnect connector C059 (Brown) from the hitch controller.Remove pin 6 from connect and install a test wire that can safely easily be probed.Connect C059 to hitch controller.Turn ignition key to the ON position.Measure controller output voltage at C059-6, It must be approximately 8 volts.Turn the key to the OFF position.-- NOT OK - replace the hitch controller, go to Step 13.-- OK - replace the wire from C059-6 to C155-A.

STEP 5 - Disconnect wire C058-10 from hitch controllerWith key OFF, disconnect connector C058 (Green) from the hitch controller.Remove pin 10 from the connector and install connector C058 onto the hitch controller.Test the hitch.-- OK - hitch raised and lower correctly, go to Step 12.-- NOT OK - hitch did not raise or lower, go to Step 6.

STEP 6 - Testing hitch raise solenoid, coil and circuitTurn the key to the OFF position.Disconnect connector C058 (Green) from the hitch controller.Connect a ground wire to C058-02 (Raise solenoid ground supply).Connect a power wire to C058-01 (Raise solenoid power supply).Stand clear of hitch and start the tractor. The hitch should raise.- OK - hitch raised, go to Step 11.- NOT OK - hitch did not raise, go to Step 7.

STEP 7 - Check that Raise solenoid coil is correctly installedCheck that the hitch raise solenoid coil is correctly installed and nut is in place.-- OK - go to Step 8.-- NOT OK - install the nut and test the hitch again.

STEP 8 - Raise solenoid spool movement check Disconnect connectors C151 from the raise solenoid.Remove and inspect the hitch raise solenoid. Check the O-rings and that inner spool moves when power andground is applied to coil.-- OK - go to Step 9.-- NOT OK - clean and or replace the solenoid and test the hitch again.

STEP 9 - Lower solenoid spool movement check Disconnect connectors C152 from the lower solenoid.Remove and inspect the hitch lower solenoid. Check the O-rings and that inner spool moves when power andground is applied to coil.-- OK - go to Step 10.-- NOT OK - clean and or replace the solenoid and test the hitch again.

STEP 10 - Manually raise hitchStart the tractor and from a safe location insert a small punch into the center of the raise solenoid.OK - hitch raised when punch was inserted, go to Step 11.NOT OK - hitch does not raise. Repair the hitch valve. See Section 8007.

STEP 11 - Install test wire to hitch raise coilInstall a jumper wire from C058-02 to the hitch raise coil C151-2.Install all connectors, start the tractor and test the hitch.-- OK - hitch raised and lower correctly, install a new wire.-- NOT OK - hitch did not raise or lower, go to Step 14.


55-21

STEP 12 - Check remote hitch raise switch at connector C058Turn the key on.Pin C058-10 should only be powered when the hitch raise switch is depressed.Check pin C058-10 for power.-- OK - Pin C058-10 is only powered when the hitch raise switch is depressed. Hitch should work.-- NOT OK - Pin C058-10 is powered when the hitch raise switch is not depressed, go to Step 13.

STEP 13 - Disconnect remote hitch remote switchesDisconnect the hitch remote hitch switches at the back of the tractor connector C312, C313A and C313B.Turn the key on.Pin C058-10 should not be powered.Check pin C058-10 for power.-- OK - Pin C058-10 is not powered, replace hitch switch.-- NOT OK - Pin C058-10 is powered when key is turned on. Replace wire C058-10 from connector to hitch

switch(s) connector C312, C313A and C313B to the LH and RH fender switches.

STEP 14 - Replace hitch controllerMake sure the wire harness routing of the controller is installed against the cab (Make sure the wires are not looseor draped in front of the controllers).Write the fault code on the failed controller.Install and calibrate a new controller.



55-22

HITCH WILL NOT LOWERMeaning:The hitch system has one of the following problems that can not be detected by the hitch controller.

Possible failure mode:1. Low or no regulated pressure.2. PFC pump supply / pressure problem.3. Hitch lower solenoid valve coil is loose or fell off but is still connect electrically.4. Hitch lower solenoid mechanically stuck in the OFF position.5. The hitch raise solenoid mechanical stuck in the ON position.6. The wire from hitch controller C058-03 to hitch lower solenoid C152-2 is shorted to power.7. The wire from the remote raise switch to the hitch controller C058-10 is shorted to power.

Background:This problem can not be detected by the hitch controller.


Wiring information:


C058-03----> C152-2 (Hitch Lower solenoid) C152-1 ---> C058-01 (12 volt power supply)

Raise circuit:C058-09 ---> C314A --> 312-C (center) or 313A-A (LH).C058-09 ---> C315-C --> 313B-C (RH switch).

IMPORTANT: To avoid pin and harness damage, use CAS - 2593-31 male test lead when taking measurements.

IMPORTANT: The hitch must be calibrated whenever a hitch component is replaced.

Corrective action:

STEP 1 - Check regulated and remote valve pressureCheck the regulated pressure with the TRANS VIEW menu on the display.Check high pressure stand-by pressure through the remote valves.-- NOT OK - correct the hydraulic problem.-- OK - go to Step 2.

STEP 2 - Disconnect remote hitch raise/lower switch.Start tractor and test hitch.-- OK - Hitch raises and lowers correctly, replace failed switch.-- NOT OK - Connect harness to remote hitch control switch and go to Step 3.

STEP 3 - Disconnect remote hitch raise switch wire from the hitch controllerWith key OFF, remove the controller cover from the rear of the tractor.Disconnect connector C058 (Green) from the hitch controller.Remove pin 09 from the connector and then install connector C058 onto hitch controller.Test the hitch.-- OK - hitch raised and lower correctly, go to Step 10.-- NOT OK - hitch did not raise or lower, go to Step 4.


55-23

STEP 4 - Testing hitch lower coil and circuitDisconnect connector C058 (Green) from the hitch controller.Connect a ground wire to C058-03 (Lower solenoid ground supply).Connect a power wire to C058-01 (Lower solenoid power supply).Stand clear of the hitch and start the tractor. The hitch should lower.-- OK - hitch lowered, go to Step 11.-- NOT OK - hitch did not raise, go to Step 5.

STEP 5 - Is Lower solenoid coil installed correctlyCheck that the hitch lower solenoid coil is installed correctly.-- OK - go to Step 6.-- NOT OK - install the solenoid coil correctly and test the hitch again.

STEP 6 - Lower solenoid spool movement checkDisconnect connectors C152 from the lower solenoid.Remove and inspect hitch lower solenoid. Check o-rings and that the inner spool moves when power and ground isapplied to coil.-- OK - go to Step 7.-- NOT OK - clean and or replace solenoid. Test the hitch again.

STEP 7 - Raise solenoid spool movement checkDisconnect connectors C151 from the raise solenoid.Remove and inspect hitch raises solenoid. Check o-rings and that inner spool moves when power and ground isapplied to coil.-- OK - go to Step 8.-- NOT OK - clean and or replace the solenoid. Test the hitch again.

STEP 8 - Manually lower hitchStart the tractor. Carefully insert a small punch into the center of the lower solenoid.-- OK - hitch lowered when punch was inserted, go to Step 9.-- NOT OK - hitch did not lower. There is a hitch valve or hydraulic system problem. See Section 8000 or 8009.

STEP 9 - Install test wire to hitch lower coilInstall a jumper wire from C058-03 to the hitch Lower coil C152-2.Install all connectors and test the hitch.-- OK - hitch raised and lower correctly. Install a new wire.-- NOT OK - hitch did not raise or lower, go to Step 10.

STEP 10 - Check hitch raise switch at connector C058Turn the key on.Pin C058-09 should only be powered when the hitch lower switch is depressed.Check pin C058-09 for power.-- OK - Pin C058-09 is only powered when the hitch lower switch is depressed. Hitch should lower.-- NOT OK - Pin C058-09 is powered when the hitch lower switch is not depressed, go to Step 11.

STEP 11 - Disconnect hitch remote switchesDisconnect the hitch remote hitch switch at the back of the tractor connector C80 or (C81 and C260 fender).Turn the key on.Pin C058-09 should not be powered.Check pin C058-09 for power.-- OK - Pin C058-09 is not powered, replace hitch switch.-- NOT OK - Pin C058-09 is powered, key is turned on. Replace wire C058-09 from connector to hitch switch(s).

See schematic.

STEP 12 - Replace hitch controllerMake sure the wire harness routing of the controllers is tight against the cab, not loose or draped in front ofcontrollers.Write the fault code on the failed controller.Install and calibrate a new controller.



55-24

HITCH WILL NOT RAISE WHEN REMOTE RAISE SWITCH IS OPERATED

HITCH WILL NOT LOWER WHEN REMOTE LOWER SWITCH IS OPERATEDMeaning:The hitch system has one of the following problems that can not be detected by the hitch controller.

Possible failure mode:1. The remote raise or lower switch is failed.2. The wire from hitch controller C058-09 to remote up switch is failed open or shorted to chassis ground.3. The wire from hitch controller C058-10 to the remote lower switch is failed open or is shorted to chassis

ground.4. The remote hitch up/down switch is not being powered by fuse 39.

Background:Raise circuitThe remote raise switch supplies a power signal to the hitch controller pin C058-9 when the switch is depressed.The hitch controller (if captured) will then supply a modulated ground signal to the raise solenoid and the hitchshould raise.

NOTE: The operator must capture the hitch once the remote up/down switches are used.

-- The hitch controller will not energize the raise solenoid if the wire between the hitch controller and the remote upswitch is failed.

-- The up switch contacts will fail (Burn out) if the wire between the controller and the up switch is shorted toground.

-- The remote up/down switch must have power from C058-12 when the key is turned on or when the tractor isstarted. See schematic.

Lower circuitThe remote lower switch supplies a power signal to the hitch controller pin C058-10 when the switch is depressed.The hitch controller (if captured) will then supply a modulated ground signal to the lower solenoid and the hitch willlower.

NOTE: The operator must capture the hitch once the remote up/down switches are used.

-- The hitch controller will not energize the lower solenoid if the wire between the hitch controller and the remotelower switch is failed.

-- The lower switch contacts will fail (Burn out) if the wire between the controller and the lower switch is shorted toground.

-- The remote up/down switch must have power from C058-12 when the key is turned on or when the tractor isstarted. See schematic.

Wiring information:

See schematic


IMPORTANT: To avoid pin and harness damage, use CAS - 2593-31 male test lead when taking measurements.


55-25

Corrective action:

STEP 1- Check power supplyDisconnect the hitch switch or switches.Turn key on.12 volts must be measured at the hitch switches, pin B.-- OK - 12 volts measured at pin 2 (B), go to Step 2.-- NOT OK - 12 volts not measured at pin 2 (B), troubleshoot failed wire from fuse 39.

STEP 2 - Check remote switch raise functionMeasure the resistance between the switch pins 2 and 3 (B and C).-- OK - The switch closed when raise button was depressed and opened when release, go to Step 3.-- NOT OK - The switch did not close when raise button was depressed and opened when released, failed switch

go to Step 4.

STEP 3 - Check remote switch lower functionMeasure the resistance between the switch pins 1 and 2 (B and A).-- OK - The switch closed when lower button was depressed and opened when release, go to Step 5.-- NOT OK - The switch did not close when lower button was depressed and opened when released, failed switch

go to Step 4.

STEP 4 - Check remote hitch raise/lower switch for short to chassis groundTurn key off.Remove controller cover from the rear of the tractor.Disconnect connector C058 (Green) from the hitch controller.Measure the resistance between the remote switch harness pin 1 (A) and chassis ground, it must be more than100 K ohms.Measure the resistance between the remote switch harness pin 3 (C) and chassis ground, it must be more than100 K ohms.-- OK - The remote switch harness is not shorted to chassis ground, replace failed switch.-- NOT OK - The one of the wire in the harness is shorted to chassis ground, replace shorted wire then install new

switch.

STEP 5 - Check remote hitch raise/lower switch for powerTurn key off.Connect the remote switches.Remove rear controller cover.Disconnect connector C058 (Green) from the hitch controller.Check that pins 9 and 10 of connector C058 are fully seated.Install test leads with male end in to cavities 9 and 10 of the hitch harness.Turn key on. Hitch fault is recorded again on the display.Do not use a test light.12 volt must be measured at harness pin 9 when the remote raise switch is depressed and no voltage whenreleased.12 volts must be measured at harness pin 10 when the remote lower switch is depressed and no voltage whenreleased.-- OK - 12 volts was measured when the remote raise and lower switch was depressed and no voltage when

released, go to Step 6.-- NOT OK - 12 volts was not measure when the remote raise and lower switch were depressed or voltage was

measure when switch is release. Replace failed wire in remote hitch switch hitch.

STEP 6 - Test hitch controllerInstall connector C058 on to hitch controller.Turn key on and clear all fault codes.Start engine and capture hitch.Press the remote raise switch and then the remote lower switch.-- OK - Raise and lower switch control hitch.-- NOT OK - Raise or lower switch did not control hitch, go to Step 7.


55-26

STEP 7 - Replace hitch controllerCheck switch function per Step 5.-- OK - 12 volts was measure when the remote raise and lower switch was depressed and no voltage when

released, replace failed controller.● Write fault code on failed hitch controller.● Replace controller.● Check that controller harness routed tight against the cab, not loose or draped in front of controllers.● Calibrate controller.-- NOT OK - 12 volts was not measured when the remote raise and lower switch were depressed or voltage was

measured when switch is released. Go back to Step 1.


55-27

HITCH WILL NOT CAPTURE AT START UPMeaning:The hitch draft arms are up higher than the hitch upper limit setting.

Possible failure mode:Hitch being held up in the up position.The upper limit knob was turned when engine was turned off.The oil in hitch cylinder has expanded (Sun) and cause the hitch to raise out of limit.

Corrective action:1. Place up/down switch to center position.2. Move armrest position control lever to max. setting.3. Press and hold the up/down switch to the monetary and hold until hitch lowers.

HITCH RAISES ON ITS OWN WHEN TRACTOR IS MOVING AND LOWERS WHEN TRACTOR STOPS MOVING

Meaning:The hitch is responding to slip or draft control.

Possible failure mode:The draft control knob is set to low (less than 5).The ground speed radar circuit if failed. (The ground speed on display will read 0 when moving).Incorrect tire size entered during calibration. (Excessive wheel slip will be read on display).

Corrective action:1. Set draft control to a higher setting (above 5).2. Check KPH (mph) display when driving.

-- If the speed read in display shows 0 when tractor is moving, the radar gun or the wiring circuit is failed.3. Incorrect tire size may be entered in the Instrumentation controller. The display will indicate excessive wheel

slip.


55-28

HITCH CONTROLLER FAULT CODES

FAULT CODE HITCH 1010 Hitch Up/Down Switch FailureCause:The Data Bus signaled that the hitch up/down switch has failed.The hitch controller received the signal from the armrest controller.

Possible failure modes:1. The hitch up/down switch failed in the armrest controller (in most cases).

2. Software execution error in the armrest controller (small chance).

Solution:The hitch up/down switch is hard wired to the armrest controller. If the hitch up/down switch fails in the armrestcontroller, the fault code ARM 1049 should exist.

1. Check for fault code ARM 1049 at the armrest controller. If ARM 1049 exists, follow the correspondingcorrective action.

2. Check the function the armrest controller.

NOTE: See schematic section 48 at the rear of this section.

FAULT CODE HITCH 1020 Slip Select Switch FailureCause:The Data Bus signaled that the slip select switch has failed.The hitch controller received the signal from the armrest controller.

Possible failure modes:1. The slip select switch failed in the armrest controller (in most cases).


Solution:The slip select switch is hard wired to the armrest controller. If the slip select switch fails in the armrest controller,the fault code ARM 1059 should exist.





55-29

FAULT CODE HITCH 1030 Slip Set Switch FailureCause:The Data Bus signaled that the slip set switch has failed.The hitch controller received the signal from the armrest controller.

Possible failure modes:1. The slip set switch failed in the armrest controller (in most cases).


Solution:The slip set switch is hard wired to the armrest controller. If the slip set switch fails in the armrest controller, thefault code ARM 1059 should exist.





55-30

FAULT CODE HITCH 3010 Transmission Speed Sensor FailedCause:The Data Bus signaled that the transmission speed sensor has failed.The hitch controller received the signal from the instrumentation controller.

Possible failure mode:1. The transmission speed sensor failed (in most cases).2. Software execution error in instrumentation controller (small chance).

Solution:The speed sensor is hard wired to the instrumentation controller. The instrumentation controller sends the wheel(transmission) speed signal to the hitch controller and the PTO controller by way of the Data Bus.If the sensor or the instrumentation controller has problem, both fault code HITCH 3010 and PTO 54060 shouldappear. If only HITCH 3010 is recorded, the problem is more likely with the hitch controller.

1. If the service tool is connected to the tractor, do the following:Go to the Monitor screen, click the Monitor Icon.Click the CHANGE PARAMETER SELECTIONS Icon.Select the INST GROUND SPEED - WHEEL and then ADD.You will be able to monitor the wheel speed sensor signal on the screen.Drive the tractor and watch the signal change when the tractor speed changes.If there is no wheel speed signal, go to step 2.If there is wheel speed signal, compare it to the speed display on the instrumentation cluster.If the speed signal looks fine on service tool but not on the instrumentation cluster, it is more likely a problemwith the instrumentation cluster.If both signals seem fine, check the function of the hitch controller.

2. Test the resistance of the transmission speed sensor:Locate the transmission speed sensor on top of the transmission.Disconnect connector C069 from the sensor.Inspect the connector. Clean the connection.Measure the sensor resistance between pin A and Pin B.The resistance should be around 3 k ohms at 20 degree Celsius.If the resistance is not in the specified range, replace the transmission speed sensor.If it is as specified, go to next step.

3. Check the wiring from the transmission speed sensor to connector C060 and then to connector C061 at theinstrumentation controller.There should be a 5 VDC power supply from pin28 of C061 to pin A of connector C069 when the tractor key isin the ‘RUN’ position.There should be good continuity from pin B of connector C069 to the clean ground.Check for open circuit and wiring shortage.

NOTE: Always inspect connector ends for damage, bent or dislocated pins when troubleshooting.

4. If none of above, check the function of the instrumentation controller and the hitch controller.

NOTE: Also see the Data Bus schematic foldout at the end of this section.

NOTE: See schematic sections 24, 25 and 26 at the rear of this section.


55-31

FAULT CODE HITCH 3020 Wheel Slip Sensing ErrorCause:The percent wheel slip is determined by the difference between the wheel speed and the ground speed. The hitchcontroller receives the information from the instrumentation controller through the Data Bus.

Possible failure modes:

1. Wheel slip sensing (radar gun, wheel speed sensor) failed (in most cases).

2. Percent slip calculation failed in instrumentation controller (small chance).

Solution:The wheel speed sensor and the radar gun (for the ground speed) are hard wired to instrumentation controller. Ifthe problem is with the wheel speed sender, then the fault code HITCH 3010 and PTO 54060 should appear.

If there is no HITCH 3010 and PTO 54060, the problem is more likely with the radar gun. There is also a smallchance of instrumentation controller malfunction.

1. Check the wiring of radar gun.Disconnect connector C068 at the radar.The power supply at pin C of connector C068 should be about 5 VDC when the tractor key is in the ‘RUN’position.There should be good continuity from pin A of connector C068 to the clean ground.Check for open circuit and wiring shortage.

NOTE: Always inspect connector ends for damage, bent or dislocated pins when troubleshooting.

2. Check the function of the radar.The signal is from Pin B of the Radar and connected to the pin 19 of the instrument cluster through Pin 25 ofconnector C060. The radar will detect the speed of any thing moving in front of it. So a quick hand moving infront of the radar will be an easy way to test the frequency change of the radar signal. Special tools (such asoscilloscope) is needed to check the frequency.If the radar does not work as expected, replace the radar in the following procedures:a. Disconnect the radar wiring.b. Remove the radar from the vehicle.c. Install the new radar.d. Reconnect the wiring and check the function of the new radar.

3. If there is not problem with the radar and its wiring, check the function of the instrumentation controller and thehitch controller.



55-32

FAULT CODE HITCH 3030 Engine Speed ErrorCause:The Data Bus signaled that the engine speed message is in error or not available from the instrument controller.

Possible failure modes:1. Engine speed sensing failed in the instrument controller.2. Software execution error in the instrument controller.

Solution:

1. Make sure the engine is running properly.2. Re calibrate the instrumentation controller.3. Check the engine speed display on the instrument display. If the display is not working properly, replace the

instrumentation controller.


55-33

FAULT CODE HITCH 4019 Right Draft Pin FailureCause:The hitch controller has detected a problem with the right hand draft pin signal.The system will use the other pin to operate in draft mode.

Possible failure modes:1. Right draft pin failed.

2. Wiring problem from the hitch controller to the right hand draft pin.

If the problem is intermittent the draft function is disabled until the next engine start up.

Solution:The most effective way of troubleshooting is to use a Y harness to measure the pin signal. The draft pin signals canalso be monitored with the service tool. Another way is to check the pin function or the pin wiring directly.

1. Use a Y harness:Plug in the Y harness at the pin connector(C153). Cavity A is the ground, Cavity B is the draft pin signal, andCavity C is the power supply (+8 VDC).a) Check the power supply at Cavity C. If the +8 VDC does not present, check the wiring from C153 to Pin 1 ofC059.b) Check the function of the right draft pin.Replace the pin in any of the following cases:No signal output.Signal not within 2.95 to 3.05 when there is no load.The output does not change with the load change.

2. Use the service tool:Go to the Monitor screen by click the Monitor Icon.Click the CHANGE PARAMETER SELECTIONS Icon.Click the HITCH DRAFT PIN-RIGHT-VOLTAGE and then ADD. You will be able to monitor the right draft pinsignal status on the screen.The voltage should be 2.95 to 3.05 when there is no load.The voltage should change with the load change in the range of 2.3 to 5.3 VDC at -60 KN to 160 KN.

3. Check the function of the draft pin.a) If a spare draft pin is available, unplug the right pin connector. Plug in the new pin, clear the fault codes, startthe tractor, and enable hitch. Lower and raise the hitch a few times.If the fault code is not recorded, the draft pin failed.If the fault code is recorded again, check the wiring.b) If there is neither fault code hitch 4029 or hitch 4039, that means the left draft pin is working. Use the left pinas the test pin and repeat the above test.

4. Check the wiring from the hitch controller to the right hand draft pin.a) Disconnect the pin connector. At the controller side, check the power supply across Cavity C and A. Itshould be 8 volts.b) Check the continuity from C153 to C059.c) At the draft pin side, measure the continuity of the pin circuit. The resistance should be 180 kohm across Aand C and 18 kohm across B and C.


NOTE: The resistances at the draft pin side are for reference only. Incorrect resistance means bad pin but somebad pins may have correct resistances.



55-34

FAULT CODE HITCH 4029 Left Draft Pin FailureCause:The hitch controller has detected a problem with the left hand draft pin signal.The system will use the other pin to operate in draft mode.

Possible failure modes:1. Left draft pin failed.

2. Wiring problem from the hitch controller to the left hand draft pin.

If the problem is intermittent the draft function is disabled until the next engine start up.

Solution:The most effective way of troubleshooting is to use a Y harness to measure the pin signal. The draft pin signals canalso be monitored with the service tool. Another way is to check the pin function or the pin wiring directly.

1. Use a Y harness:Plug in the Y harness at the pin connector(C154). Cavity A is the ground, cavity B is the draft pin signal, andcavity C is the power supply (+8 VDC).a) Check the power supply at cavity C. If the +8 VDC does not present, check the wiring from C154 to Pin 1 ofC059.b) Check the function of the left draft pin.Replace the pin in any of the following cases:No signal output.Signal not within 2.95 to 3.05 when there is no load.The output does not change with the load change.

2. Use the service tool:Go to the Monitor screen by click the Monitor Icon.Click the CHANGE PARAMETER SELECTIONS Icon.Click the HITCH DRAFT PIN-LEFT-VOLTAGE and then ADD. You will be able to monitor the left draft pinsignal status on the screen.The voltage should be 2.95 to 3.05 when there is no load.The voltage should change with the load change in the range of 2.3 to 5.3 VDC at -60 KN to 160 KN.

3. Check the function of the draft pin.a) If a spare draft pin is available, unplug the pin connector(C154). Plug in the new pin, clear the fault codes,start the tractor, and enable hitch. Lower and raise the hitch a few times.If the fault code is not recorded, the draft pin failed.If the fault code is recorded again, check the wiring.b) If there is neither fault code hitch 4019 or hitch 4039, that means the right draft pin is working. Use the rightpin as the test pin and repeat the above test.

4. Check the wiring from the hitch controller to the left hand draft pin.a) Disconnect the pin connector(C154). At the controller side, check the power supply across cavity C and A. Itshould be 8 volts.b) Check the continuity from C154 to C059.c) At the draft pin side, measure the continuity of the pin circuit. The resistance should be 180 kohm across Aand C and 18 kohm across B and C.





55-35

FAULT CODE HITCH 4039 Both Draft Pins FailedCause:Both draft pins failed when tractor is configured for two draft pins.

Possible failure modes:1. Draft pin failure.

2. Wiring problem.

If the problem is intermittent, the draft function is disabled until the next engine start up.

Solution:The chance for both draft pins to fail at the same time is rare. If fault code hitch 4019 or hitch 4029 exists, check thesingle pin function or its wiring. If none of the codes exists, check the power supply or the ground to the two pins.

1. Check for the single pin fault code hitch 4019 or hitch 4029. If any exists, follow its corresponding diagnosingprocedures.

2. If none of hitch 4019 or hitch 4029 exists, check the power supply or the ground to the two pins.a) Check the power supply at either left pin connector or right pin connector. There should be +8 volts at cavityC of C153 or cavity C of C154.If not, check the continuity from cavity 1 of C059 to the cavity C of the pin connector.b) Check the ground to the two pins. There should be continuity between cavity A of either left pin connector orright pin connector and the cavity 11 of C059.If not, check the wiring in between.

3. If none of above, check the function of the hitch controller.




55-36

FAULT CODE HITCH 6014 Hitch Lower Solenoid Failed Open Or Shorted To Ground

Cause:The hitch lower solenoid or its wiring has failed open or is shorted to ground.

Possible failure mode:1. Hitch lower solenoid failure.

2. Wiring from the hitch controller to the hitch lower solenoid failed open or shorted to the ground.

Solution:Check the hitch lower solenoid resistance and the continuity from the hitch controller to the hitch lower solenoid.

1. Test the hitch lower solenoid resistance at the hitch controller connector (C058).Remove the controller cover from the rear of the tractor.Disconnect connector (C058) (Green) from the hitch controller.Inspect pin 3 in the connector. Clean the connection.Clean the mating pin and connector.Test continuity between pin 1 and pin 3. The resistance should be:Approximately 5.1 ohms at - 40 C (-40 F).Approximately 6.9 ohms at 25 C (77 F).Approximately 9.5 ohm at 100 C (212 F).If the hitch lower solenoid resistance is not in the range, go to step 2.If it is as specified, start the engine and test the hitch again.If fault code is recorded again, check the function of the hitch controller.If not, problem fixed.

2. Test the hitch lower solenoid resistance at the hitch lower solenoid connector (C152).Test continuity between pin 1 and pin 2. The resistance should be:Approximately 5.1 ohms at - 40 C (-40 F).Approximately 6.9 ohms at 25 C (77 F).Approximately 9.5 ohm at 100 C (212 F).If the hitch lower solenoid resistance is not in the range, replace the solenoid.If it is as specified, wiring problem. Go to step 3.

3. Check the wiring harness from connector C058 to C152 for shortage to ground.




55-37

FAULT CODE HITCH 6015 Hitch Lower Solenoid Shorted To 12 VoltsCause:The hitch lower solenoid or its wiring is shorted to 12 volts.

Possible failure modes:1. Wiring from the hitch controller to the hitch lower solenoid shorted to 12 volts.

2. Hitch lower solenoid failure.

Solution:Check the hitch lower solenoid resistance and the continuity from the hitch controller to the hitch lower solenoid.

1. Test the hitch lower solenoid resistance at the hitch controller connector (C058).Remove the controller cover from the rear of the tractor. Disconnect connector (C058) (Green) from the hitchcontroller.Inspect pin 3 in the connector. Clean the connection.Clean the mating pin and connector.Test continuity between pin 1 and pin 3. The resistance should be:Approximately 5.1 ohms at - 40 C (-40 F).Approximately 6.9 ohms at 25 C (77 F).Approximately 9.5 ohm at 100 C (212 F).If the hitch lower solenoid resistance is not in the range, go to step 2.If it is as specified, start the engine and test the hitch again.If fault code is recorded again, check the function of the hitch controller.If not, problem fixed.

2. Test the hitch lower solenoid resistance at the hitch lower solenoid connector (C152).Test continuity between pin 1 and pin 2. The resistance should be:Approximately 5.1 ohms at - 40 C (-40 F).Approximately 6.9 ohms at 25 C (77 F).Approximately 9.5 ohm at 100 C (212 F).If the hitch lower solenoid resistance is not in the range, replace the solenoid.If it is as specified, wiring problem. Go to step 3.

3. Check the wiring harness from connector C058 to C152 for shortage to 12 volts.




55-38

FAULT CODE HITCH 6024 Hitch Raise Solenoid Failed Open Or Shorted To Ground

Cause:The hitch raise solenoid or its wiring has failed open or is shorted to ground.

Possible failure mode:1. Hitch raise solenoid failure.

2. Wiring from the hitch controller to the hitch raise solenoid failed open or shorted to the ground.

Solution:Check the hitch raise solenoid resistance and the continuity from the hitch controller to the hitch raise solenoid.

1. Test the hitch raise solenoid resistance at the hitch controller connector (C058).Remove the controller cover from the rear of the tractor.Disconnect connector (C058) (Green) from the hitch controller.Inspect pin 2 in the connector. Clean the connection.Clean the mating pin and connector.Test continuity between pin 1 and pin 2. The resistance should be:Approximately 5.1 ohms at - 40 C (-40 F).Approximately 6.9 ohms at 25 C (77 F).Approximately 9.5 ohm at 100 C (212 F).If the hitch raise solenoid resistance is not in the range, go to step 2.If it is as specified, start the engine and test the hitch again.If fault code is recorded again, check the function of the hitch controller.If not, problem fixed.

2. Test the hitch raise solenoid resistance at the hitch raise solenoid connector (C151).Test continuity between pin 1 and pin 2. The resistance should be:Approximately 5.1 ohms at - 40 C (-40 F).Approximately 6.9 ohms at 25 C (77 F).Approximately 9.5 ohm at 100 C (212 F).If the hitch raise solenoid resistance is not in the range, replace the solenoid.If it is as specified, wiring problem. Go to step 3.

3. Check the wiring harness from connector C058 to C151 for shortage to ground.




55-39

FAULT CODE HITCH 6025 Hitch Raise Solenoid Shorted To 12 VoltsCause:The hitch raise solenoid or its wiring is shorted to 12 volts.

Possible failure modes:1. Wiring from the hitch controller to the hitch raise solenoid shorted to 12 volts.

2. Hitch raise solenoid failure.

Solution:Check the hitch raise solenoid resistance and the continuity from the hitch controller to the hitch raise solenoid.

1. Test the hitch raise solenoid resistance at the hitch controller connector (C058).Remove the controller cover from the rear of the tractor.Disconnect connector (C058) (Green) from the hitch controller.Inspect pin 2 in the connector. Clean the connection.Clean the mating pin and connector.Test continuity between pin 1 and pin 2. The resistance should be:Approximately 5.1 ohms at - 40 C (-40 F).Approximately 6.9 ohms at 25 C (77 F).Approximately 9.5 ohm at 100 C (212 F).If the hitch raise solenoid resistance is not in the range, go to step 2.If it is as specified, start the engine and test the hitch again.If fault code is recorded again, check the function of the hitch controller.If not, problem fixed.

2. Test the hitch raise solenoid resistance at the hitch raise solenoid connector (C151).Test continuity between pin 1 and pin 2. The resistance should be:Approximately 5.1 ohms at - 40 C (-40 F).Approximately 6.9 ohms at 25 C (77 F).Approximately 9.5 ohm at 100 C (212 F).If the hitch raise solenoid resistance is not in the range, replace the solenoid.If it is as specified, wiring problem. Go to step 3.

3. Check the wiring harness from connector C058 to C151 for shortage to 12 volts.




55-40

FAULT CODE HITCH 8001 Battery Voltage Less Than 9.8 VoltsPossible failure mode:

1. Battery voltage is too low.

2. Alternator regulator malfunction.

3. The controller has a bad connection to power or is not grounded properly.

Solution:Check for battery voltage, alternator regulator output, and the controller connection to power and ground.

1. Check for fault codes PTO 10033, ARM 8011, TRANS 8011, and AUX 8011. These are all fault codes forbattery voltage low. If they exist, it is most likely that the battery voltage is low.

2. Test battery voltage. It should be around 12 - 14 volts.

3. If the battery voltage is OK, check system voltage at cavity 12 of connector C058.Check for bad connection and improper ground at cavity 11 of the same connector.Check for shortage to the ground along the power supply to the controller.

4. Test alternator output if the battery voltage would not hold even when the tractor has been running.The voltage should be above 14 volts at C077 - B+.

5. If none of above, check the function of the remote hydraulic controller.


FAULT CODE HITCH 8002 Battery Voltage Too HighCause:Battery voltage over 17 volts.

Possible failure modes:1. Alternator regulator malfunction.

2. The battery positive wiring is accidentally connected to external higher voltage source.

Solution:Test the alternator output and check for external power source.

1. Check for fault code TRANS 8012 and AUX 8012. These are all fault codes for battery voltage high. If theyexist, it is most likely that the battery voltage is high.

2. Test battery voltage. It should be around 12 - 14 volts.

3. Test alternator output at C077-B+. It should be below 15.5 volts.

4. Check for external power shortage to the controller power supply at cavity 12 of connector C058.Check for shortage along the power supply to the controller.




55-41

FAULT CODE HITCH 9301 Hitch Raise Valve Threshold Is Too High During Calibration

Cause:During calibration, PWM threshold to start hitch raising is above the limit (55%).

Possible failure modes:1. Raise solenoid coil resistance is too high.

2. Wire harness or connector problem between hitch raise solenoid and hitch controller.

3. Battery voltage is very low.

4. Hitch valve raise portion is stuck closed.

Solution:Make sure the calibration procedure is correct. Then do the following for troubleshooting.

1. Make sure the battery voltage and the alternator output voltage is above 9.8 volts DC.Refer to fault code hitch 8001 for battery voltage troubleshooting procedures.

2. Test the hitch raise solenoid coil (C151) and its wiring for high resistance or openings.Refer to fault code hitch 6024 troubleshooting procedures for details.

3. Make sure there is proper hydraulic pressure to the hitch valve.Check for valve failure (solenoid spool or the valve main spool stuck closed).Repair or replace the spools or the valve according to the problem.


FAULT CODE HITCH 9302 Hitch Raise Valve Threshold Is Too Low During Calibration

Cause:During calibration, PWM threshold to start hitch raising is above the limit (55%).

Possible failure modes:1. Raise solenoid coil resistance is too low.

2. Battery voltage is very high.

3. Valve failure.


1. Test battery voltage and the alternator output voltage (must be less than 14.7 volts DC).Refer to fault code hitch 8002 for battery voltage troubleshooting procedures.

2. Test raise solenoid coil (C151) for low resistance. The resistance should be 6.4 to 6.8 ohms.Refer to fault code hitch 6024 troubleshooting procedures for details.

3. Make sure there is proper hydraulic pressure to the hitch valve.Check for valve failure (center spring broken, spool too loose).Repair or replace the spools or the valve according to the problem.



55-42

FAULT CODE HITCH 9303 Full Raise Current Out Of RangeCause:During calibration full raise current out of range.

Possible failure modes:1. Raise solenoid coil resistance is to low.2. Battery voltage is very high.


1. Test battery voltage and the alternator output voltage (must be less than 14.7 volts DC).Refer to fault code hitch 8002 troubleshooting procedures.

2. Test raise solenoid coil (C151) and its wiring for shortage. The resistance should be 6.4 to 6.8 ohms.Refer to fault code hitch 8002 troubleshooting procedures.



55-43

FAULT CODE HITCH 9304 Hitch Position Is Not At MaximumCause:During calibration, the hitch position is not at maximum height or the potentiometer is not within specifications.


1. Mechanical interference prevents hitch from moving fully up.

2. Rock shaft potentiometer failed.

3. Wiring harness damage.

4. Potentiometer’s linkage problem.

Solution:Make sure there is no mechanical interference in the hitch linkage.Check for rock shaft potentiometer failure and linkage problems.

1. Check hitch linkage for mechanical interference. Make sure there is no external object that may prevent thehitch from full up travel.

2. Check for the linkage problem of the rockshaft potentiometer.a) Check the linkage from the rockshaft to the potentiometer. Make sure it is not loose, damaged, or improperinstalled.b) Adjust rockshaft position potentiometer to 0.80 + 0.10 volts when hitch is fully lowered.c) Tighten set screw on rockshaft potentiometer.

3. Test the function of the rockshaft potentiometer.Signal output from 0 to 5 VDC (1/24 volts per degree) at pin B when pin A is connected to power supply and pinC is grounded.Disconnect the rockshaft potentiometer at C155.The resistance is about 4 kohm measured across pins A and C.The resistance increase with clockwise rotation from 0 to about 4 kohm measured across pin B and C.Turn potentiometer along the full working range, the multimeter reading must be smooth and continuous.

4. Test the wiring harness of the rock shaft potentiometer.a) Test the cavity 6, 7, and 8 of connector C059. The resistance between cavity 6 and 8 should be around 4kohm. The resistance between cavity 7 and 6 or 8 should change from 0 to 4 kohm when the potentiometershaft changes its positions.b) Test the continuity between connector C059 and connector C155. The three wires should all have goodconnections.




55-44

FAULT CODE HITCH 9306 Hitch Lower Valve Threshold Is Too High During Calibration

Cause:During calibration, PWM threshold to start hitch lower is above the limit (55%).

Possible failure modes:1. Lower solenoid coil resistance is too high.

2. Wire harness or connector problem between hitch lower solenoid and hitch controller.

3. Battery voltage is very low.

4. Hitch valve lower portion is stuck closed.


1. Make sure the battery voltage and the alternator output voltage is above 9.8 volts DC.Refer to fault code hitch 8001 for battery voltage troubleshooting procedures.

2. Test the hitch lower solenoid coil (C152) and its wiring for high resistance or openings.Refer to fault code hitch 6024 troubleshooting procedures for details.

3. Make sure there is proper hydraulic pressure to the hitch valve.Check for valve failure (solenoid spool or the valve main spool stuck closed).Repair or replace the spools or the valve according to the problem.


FAULT CODE HITCH 9307 Hitch Lower Valve Threshold Is Too Low During Calibration

Cause:During calibration, PWM threshold to start hitch lower is below the limit (4%).


1. Lower solenoid coil resistance is too low.

2. Battery voltage is very high.

3. Valve failure.


1. Test battery voltage and the alternator output voltage (must be less than 14.7 volts DC).Refer to fault code hitch 8002 for battery voltage troubleshooting procedures.

2. Test lower solenoid coil (C152) and its wiring for low resistance.Refer to fault code hitch 6024 troubleshooting procedures for details.

3. Make sure there is proper hydraulic pressure to the hitch valve.Check for valve failure (center spring broken, spool too loose).Repair or replace the spools or the valve according to the problem.



55-45

FAULT CODE HITCH 9308 Time Allowed For Calibration Has ExpiredCause:During calibration the time allowed for calibration has expired.

Possible failure modes:Operator did not acknowledge (within 6 minutes) when hitch is fully lowered in Step 6 of calibration procedure.

Solution:1. Recalibrate the hitch.

FAULT CODE HITCH 9309 Hitch Position At The Bottom Of Travel Is Not Within Specification

Cause:During calibration, the hitch rockshaft position potentiometer signal at the fully lowered position is not withinspecifications.

Possible failure modes:1. Mechanical interference prevents hitch from moving fully down.

2. Rock shaft potentiometer failed.




1. Check hitch linkage for mechanical interference. Make sure there is no external object that may prevent thehitch from full down travel.

2. Check for the linkage problem of the rockshaft potentiometer.a) Check the linkage from the rockshaft to the potentiometer. Make sure it is not loose, damaged, or improperinstalled.b) Adjust rockshaft position potentiometer to 0.80 +/- 0.10 volts when hitch is fully lowered.c) Tighten set screw on rockshaft potentiometer.


4. Test the wiring harness of the rock shaft potentiometer.a) Test the cavity 6, 7, and 8 of connector C059. The resistance between cavity 6 and 8 should be around 4kohm. The resistance between cavity 7 and 6 or 8 should change from 0 to 4 kohm when the potentiometershaft changes its positions.b) Test the continuities between connector C059 and connector C155. The three wires should all have goodconnections.




55-46

FAULT CODE HITCH 9310 Range Of The Hitch Position Is Not Within Specification

Cause:During calibration, the hitch rockshaft position potentiometer signal difference between the fully lowered and fullyraised position is not within specifications.

Possible failure modes:1. Rock shaft potentiometer failed.


3. Potentiometer’s shaft loose from the lever.

4. Mechanical interference.


1. Check hitch linkage for mechanical interference. Make sure there is no external object that may cause the hitchout of range.



4. Test the wiring harness of the rock shaft potentiometer.a) Test the cavity 6, 7, and 8 of connector C059. The resistance between cavity 6 and 8 should be around 4kohm. The resistance between cavity 7 and 6 or 8 should change from 0 to 4 kohm when the potentiometershaft changes its positions.b) Test the continuities between connector C059 and connector 155. The three wires should all have goodconnections.




55-47

FAULT CODE HITCH 9311 Ratio Of Position Command To Rockshaft Range Is Not Within Specification

Cause:During calibration, the ratio of rockshaft position range to position command potentiometer range is not withinspecifications.

Possible failure modes:1. Rockshaft potentiometer has failed.

2. Rockshaft potentiometers shaft is loose from the lever.

3. Position command potentiometer failed at the arm controller.

4. Position command potentiometers shaft is loose from the lever.

Solution:Make sure there is no mechanical interference in the hitch linkage.Check for rockshaft potentiometer failure and hitch linkage problems.Check for the position command potentiometer function and linkage problems.

1. Check hitch linkage for mechanical interference. Make sure there is no external object that may cause the hitchout of range.



4. Test the wiring harness of the rockshaft potentiometer.a) Test the cavity 6, 7, and 8 of connector C059. The resistance between cavity 6 and 8 should be around 4kohm. The resistance between cavity 7 and 6 or 8 should change from 0 to 4 kohm when the potentiometershaft changes its positions.b) Test the continuities between connector C059 and connector C155. The three wires should all have goodconnections.


5. Check for position command potentiometer problem at the arm controller.Refer to fault code ARM 69 for potentiometer information, routing information, and diagnosing procedures.



55-48

FAULT CODE HITCH 9312 Selected Pin Is Connected To The Left Side Rather Than The Right Side

Cause:During calibration, draft with one pin was selected.If one pin draft is selected, the draft pin should be installed on the right side of the tractor.This fault code is logged if the pin is detected on the left side rather than the right side.

Solution:Make sure the right hand draft pin connector is connected and wired correctly.Recalibrate hitch if the draft must be with 2 pins.

1. Verify that the connector to the right hand draft pin is connected and wired correctly if draft with one pin isrequired.

2. Check the right hand draft pin connection along its wiring. Make sure there is no bent pin, loose connection,and damaged wires.

3. Calibrate the hitch again if the intent was for draft with 2 pins.


FAULT CODE HITCH 9313 Hitch Is Calibrated As Position OnlyCause:During calibration, the hitch controller is calibrated as position control only due to armrest being calibrated asposition only even though draft pins were detected.Hitch is electrically disabled.

Solution:Check the armrest calibration and correct if necessary. Calibrate the hitch controller again if draft is desired.


55-49

FAULT CODE HITCH 9314 Right Draft Pin No Load Offset Voltage Out Of Range

Cause:During calibration, the ’No Load’ offset voltage is out of range for right draft pin.The draft control requires that the ’No load’ voltage is 3.00 +/- 0.05 volts to ensure the draft quality.The hitch controller will check it during calibration.

Possible failure modes:1. Right draft pin failed.

2. Wiring problem from the hitch controller to the right hand draft pin.

Solution:The ’No Load’ offset point can be permanently shifted if the draft pin is installed backwards and overloaded. Thepin signal can be checked by using a Y harness or using the monitoring screen of the service tool.If the signal exists but just slightly beyond the range (say in the range 2.3 - 3.7 volts), the wiring is OK, but pinfailed.If there is no signal or signal is far beyond the range, it can either be pin failure or wiring problems.

1. Use a Y harness:Plug in the Y harness at the pin connector(C153). cavity A is the ground, cavity B is the draft pin signal, andcavity C is the power supply (+8 VDC).a) Check the power supply at cavity C. If the +8 VDC is not present check the wiring from C153 to Pin 1 ofC059.b) Check the function of the right draft pin.Replace the pin in any of the following cases:No signal output.Signal not within 2.95 to 3.05 when there is no load.The output does not change with the load change.

2. Use the service tool:Go to the Monitor screen by click the Monitor Icon.Click the CHANGE PARAMETER SELECTIONS Icon.Click the HITCH DRAFT PIN-RIGHT-VOLTAGE and then ADD. You will be able to monitor the right draft pinsignal status on the screen.The voltage should be 2.95 to 3.05 when there is no load.The voltage should change with the load change in the range of 2.3 to 5.3 VDC at -60 KN to 160 KN.

3. Check the function of the draft pin.a) If a spare draft pin is available, unplug the right pin connector. Plug in the new pin, clear the fault codes, startthe tractor, and enable hitch. Lower and raise the hitch a few times.If the fault code is not recorded, the draft pin failed.If the fault code is recorded again, check the wiring.b) If there is neither fault code hitch 4029 nor hitch 4039, that means the left draft pin is working. Use the leftpin as the test pin and repeat the above test.

4. Check the wiring from the hitch controller to the right hand draft pin.a) Disconnect the pin connector. At the controller side, check the power supply across cavity C and A. It shouldbe 8 volts.b) Check the continuity from C153 to C059.c) At the draft pin side, measure the continuity of the pin circuit. The resistance should be 180 kohm across Aand C and 18 kohm across B and C.





55-50

FAULT CODE HITCH 9315 Left Draft Pin No Load Offset Voltage Outside Normal Range

Cause:During calibration, the ’No Load’ offset voltage is outside normal range for left draft pin.The draft control requires that the ’No load’ voltage is 3.00 +/- 0.05 volts to ensure the draft quality.The hitch controller will check it during calibration.

Possible failure modes:1. Left draft pin failed.

2. Wiring problem from the hitch controller to the left hand draft pin.

Solution:The ’No Load’ offset point can be permanently shifted if the draft pin is installed backward and overloaded. The pinsignal can be checked by using a Y harness or using the monitoring screen of the service tool.

If the signal exists but just slightly beyond the range (say in the range 2.3 - 3.7 volts), the wiring is OK, but pin hasfailed.If there is no signal or signal is far beyond the range, it can either be pin failure or wiring problems.

1. Use a Y harness:Plug in the Y harness at the pin connector(C154). Cavity A is the ground, cavity B is the draft pin signal, andcavity C is the power supply (+8 VDC).a) Check the power supply at cavity C. If the +8 VDC is not present, check the wiring from C154 to Pin 1 ofC059.b) Check the function of the left draft pin.Replace the pin in any of the following cases:No signal output.Signal not within 2.95 to 3.05 when there is no load.The output does not change with the load change.

2. Use the service tool:Go to the Monitor screen, click the Monitor Icon.Click the CHANGE PARAMETER SELECTIONS Icon.Click the HITCH DRAFT PIN-LEFT-VOLTAGE and then ADD. You will be able to monitor the left draft pinsignal status on the screen.The voltage should be 2.95 to 3.05 when there is no load.The voltage should change with the load change in the range of 2.3 to 5.3 VDC at -60 KN to 160 KN.

3. Check the function of the draft pin.a) If a spare draft pin is available, unplug the pin connector(C154). Plug in the new pin, clear the fault codes,start the tractor, and enable hitch. Lower and raise the hitch a few times.If the fault code is not recorded, the draft pin failed.If the fault code is recorded again, check the wiring.b) If there is neither fault code hitch 4019 nor hitch 4039, that means the right draft pin is working. Use the rightpin as the test pin and repeat the above test.

4. Check the wiring from the hitch controller to the left hand draft pin.a) Disconnect the pin connector(C154). At the controller side, check the power supply across cavity C and A. Itshould be 8 volts.b) Check the continuity from C154 to C059.c) At the draft pin side, measure the continuity of the pin circuit. The resistance should be 180 kohm across Aand C and 18 kohm across B and C.


NOTE: The resistances at the draft pin side are for reference only. Incorrect resistance means a bad pin but somebad pins may have correct resistances.



55-51

FAULT CODE HITCH 9316 ‘No Load’ Offset Voltage Out Of Range For Both Draft Pins

Cause:During calibration, the ’No Load’ offset voltage is out of normal range for both draft pins.

Possible failure mode:1. Draft pin failure.

2. Wiring problem.

Solution:The chance for both draft pins to fail at the same time is rare. If fault code hitch 9014 or hitch 9015 exists, check thesingle pin function or its wiring. If none of the codes exists, check the power supply or the ground to the two pins.

1. Check for the single pin fault code hitch 4019 or hitch 4029. If any exists, follow its corresponding diagnosingprocedures.

2. If none of hitch 4019 or hitch 4029 exists, check the power supply or the ground to the two pins.a) Check the power supply at either left pin connector or right pin connector. There should be +8 volts at cavityC of C153 or cavity C of C154.If not, check the continuity from cavity 1 of C059 to the cavity C of the pin connector.b) Check the ground to the two pins. There should be continuity between cavity A of either left pin connector orright pin connector and the cavity 11 of C059.If not, check the wiring in between.




FAULT CODE HITCH 9317 Hitch Controller Requires CalibrationCause:During calibration, hitch controller requires calibration.

Solution:1. Recalibrate the controller.

FAULT CODE HITCH 9318 Engine Speed Too Low For Hitch Lower Calibration

Cause:For hitch lower calibration, the engine speed has to be above 1500 RPM. If the engine speed is lower than 1500RPM during hitch lower calibration, this fault code is recorded.

Solution:1. Be sure the engine speed is above 1500 RPM and recalibrate the hitch.


55-52

FAULT CODE HITCH 9319 Hitch Is Calibrated As Position OnlyCause:During calibration, hitch controller calibrated as position only. The armrest controller is calibrated for draft.

Solution:The armrest calibration and the hitch calibration should match each other for draft or position control.Check the armrest calibration and correct if necessary. Calibrate the hitch controller again if draft is desired.

FAULT CODE HITCH 9320 Calibration Aborted Due To Tractor MovingCause:During calibration, the calibration aborted due to tractor moving.

Possible failure modes:1. Tractor moved during the calibration (in most cases).

2. Tractor speed sensor failure (small chance).

Solution:Make sure the tractor does not move during the calibration.If the tractor did not move, check the wheel speed sensor.Refer to fault code hitch 3010 for details of wheel speed sensor troubleshooting.

NOTE: In rare cases, external electromagnetic interference may introduce signals and affect the hitch calibrationprocess. If it is suspected to be such a case, try to avoid high electromagnetic interference devices such as weldingmachine, high voltage transformer, Radio broadcast tower, etc.

FAULT CODE HITCH 9321 No Engine Speed During Hitch CalibrationCause:Hitch calibration attempted when the engine is not running or engine speed signal failed.

Solution:Make sure the engine is running normal during the hitch calibration. If the engine is running properly, check theengine alternator RPM signal from the instrumentation cluster. Refer to fault code PTO 54261 for detail on enginespeed signal troubleshooting.


55-53

FAULT CODE HITCH 10030 Controller Memory FailureCause:Controller memory failure. The system can not read calibration values (EEPROM failure).

Possible failure modes:1. EEPROM defect or intermittent ECU.

Solution:

Calibrate the hitch controller again. If the same fault code is logged after calibration, change the controller.

NOTE: In rare cases, external electromagnetic interference may introduce signals and affect the hitch calibrationprocess. If it is suspected to be such a case, try to avoid high electromagnetic interference devices such as weldingmachine, high voltage transformer, radio broadcast tower, etc.

FAULT CODE HITCH 10060 Controller Relay Failure Or Hitch Valves Shorted To Power

Cause:There is an internal relay inside the hitch controller. This relay supples voltage to the hitch valve solenoids when itis energized. If it senses voltage when it is not energized, this fault code will be recorded.

Possible failure modes:1. Controller internal relay stuck closed.

2. Wires from the controller to the valves shorted to power when the relay is not on.

Solution:Make sure there is no external shortage between the hitch valve wiring and the power supply of the hitch controlleror other external power.Check the function of the controller.

1. Check for wire shortage to power.a. Disconnect connector C058 (Green) from the hitch controller.b. Check the voltage on all the terminals of hitch valve solenoid (cavity 1, 2, 3 of C058).There should be no voltage on any terminals.If there is voltage (above 1 volt) on any terminal, trace the wire for shortage.c. Pay attention to wire shortage between the hitch valve solenoid and the power supply (cavity 12 of C058).If the resistance between any of them is low, check for wiring damage.

2. If no external shortage, check controller internal relay.The relay will kick on after the power is turned on for two seconds and kick off after the power is turned off.A ’click’ can be heard at the controller when the relay kicks on or off. The ’click’ can also be felt when touchingthe controller box with a bare hand.Remove the controller cover on the back of the tractor.Listen or feel for the relay ’click’ when turn the key on for more than two seconds and then turn off.If there is click, the relay is working OK.If there is no click, replace the controller.

NOTE: If the problem is intermittent, it may be caused by temperature change on a progressively deterioratingcontroller. Some shortages are intermittent at initial stage.



55-54

FAULT CODE HITCH 10061 Hitch Raise/Lower Solenoids Circuit Failed Open

Possible failure mode:1. Wiring problem from the hitch controller to the solenoids.

2. Controller internal relay stuck open.

3. Both raise and lower solenoids failed.

Solution:The chance for both raise and lower solenoids to fail at the same time is rare. If fault code hitch 6014 or 6024exists, check the single solenoid resistance and its wiring harness. If none of the codes exists, check the controllerinternal relay and hitch valve wiring.

1. Check for fault code HITCH 6014 and 6024. If either exists, follow its corresponding diagnosing procedures.

2. If neither of HITCH 6014 or 6024 exists, check the continuity from cavity 1 of connector C058 to cavity 1 ofeither connector C151 or C152.


3. If none of above, check the function of the internal relay of the hitch controller.The relay will turn on after the power is turned on for two seconds and turn off after the power is turned off.A ’click’ can be heard at the controller when the relay turns on or off. The ’click’ can also be felt when touchingthe controller box with a bare hand.Remove the controller cover on the back of the tractor.Listen or feel for the relay ’click’ when turning the key on for more than two seconds and then off.If there is click, the relay is working OK.If there is no click, replace the controller.

NOTE: If the problem is intermittent, it may be caused by temperature change on a progressively deterioratingcontroller. Some shortages are intermittent at initial stage.


FAULT CODE HITCH 10071 Controller Internal FailureCause:The hitch lower coil driver inside the hitch controller is shorted to 12 volts.

Solution:Make sure the controller has good power and ground connections. Start the tractor again. If the fault code isrecorded again, replace the controller.



55-55

FAULT CODE HITCH 10072 Controller Internal FailureCause:The hitch lower coil driver inside the hitch controller is shorted to 12 volts.

Solution:Make sure the controller has good power and ground connections. Start the tractor again. If the fault code isrecorded again, replace the controller.


FAULT CODE HITCH 10090 Controller Internal FailureCause:A voltage regulator in the controller has failed.

Solution:Make sure the controller has a good connection to the battery and is properly grounded.

1. Check cavity 1 of J2 connector (C059 Brown). Make sure the harness connected to it is not shorted to 12 voltsor to ground.

2. Start the tractor again. If the fault code is recorded again, replace the controller.


FAULT CODE HITCH 11010 Load Command Potentiometer FailureCause:The Data Bus signaled that the load command potentiometer has failed.The hitch controller received the signal from the armrest controller.

Possible failure modes:1. Load command potentiometer in armrest controller (in most cases).


Solution:The load command potentiometer is hard wired to the armrest controller. If the load command potentiometer fails inthe armrest controller, the fault code ARM 79 should exist.

1. Check for fault code ARM 79 at the armrest controller. If ARM 79 exists, follow the corresponding correctiveaction.

2. Check the function of the armrest controller.



55-56

FAULT CODE HITCH 11020 Drop Rate Command Potentiometer FailureCause:The Data Bus signaled that the drop rate command potentiometer has failed.The hitch controller received the signal from the armrest controller.

Possible failure modes:1. The drop rate command potentiometer failed in the armrest controller (in most cases).


Solution:The drop rate command potentiometer is hard wired to the armrest controller. If the drop rate commandpotentiometer fails in the armrest controller, the fault code ARM 159 should exist.




FAULT CODE HITCH 11030 Travel Range Potentiometer FailureCause:The Data Bus signaled that the travel range potentiometer has failed.The hitch controller received the signal from the armrest controller.

Possible failure modes:1. The travel range potentiometer failed in the armrest controller (in most cases).


Solution:The travel range potentiometer is hard wired to the armrest controller. If the travel range potentiometer fails in thearmrest controller, the fault code ARM 169 should exist.





55-57

FAULT CODE HITCH 11050 Upper Limit Potentiometer FailureCause:The Data Bus signaled that the upper limit potentiometer has failed.The hitch controller received the signal from the armrest controller.

Possible failure modes:1. The upper limit potentiometer failed in the armrest controller (in most cases).


Solution:The upper limit potentiometer is hard wired to the armrest controller. If the upper limit potentiometer fails in thearmrest controller, the fault code ARM 149 should exist.





55-58

FAULT CODE HITCH 11069 Rockshaft Position Potentiometer Is Outside Normal Operating Range

Cause:The hitch rockshaft position potentiometer signal difference between the fully lowered and fully raised position isnot within specifications.

Possible failure modes:1. Rock shaft potentiometer failed.



4. Mechanical interference.


1. Check hitch linkage for mechanical interference. Make sure there is no external object that may cause the hitchto be out of range.

2. Check for the linkage problem on the rockshaft potentiometer.a) Check the linkage from the rockshaft to the potentiometer. Make sure it is not loose, damaged, or improperlyinstalled.b) Adjust rockshaft position potentiometer to 0.80 + 0.10 volts when hitch is fully lowered.c) Tighten set screw on rockshaft potentiometer.


4. Test the wiring harness of the rock shaft potentiometer.a) Test the cavity 6, 7, and 8 of connector C059. The resistance between cavity 6 and 8 should be around 4kohm. The resistance between cavity 7 and 6 or 8 should change from 0 to 4 kohm when the pot shaft changesits positions.b) Test the continuities between connector C059 and connector 155. The three wires should all have goodconnections.




55-59

FAULT CODE HITCH 11070 Hitch Position Command Potentiometer FailureCause:The Data Bus signaled that the hitch position command potentiometer has failed.The hitch controller received the signal from the armrest controller.

Possible failure modes:1. The hitch position command potentiometer failed in the armrest controller (in most cases).


Solution:The hitch position command potentiometer is hard wired to the armrest controller. If the hitch position commandpotentiometer fails in the armrest controller, the fault code ARM 69 should exist.





55-60

FAULT CODE HITCH 12011 Communication Lost With The Armrest Controller

Cause:Hitch controller is not receiving or recognizing information from the armrest controller.

Possible failure modes:1. Bad connection between hitch controller and the armrest controller.2. Controller failure.

Solution:Make sure both the armrest controller and the hitch controller functioning OK.Check the Data Bus connections.

1. Check the function of the hitch controller.a) Make sure the connector to the hitch controller is plugged in.b) Check the LED light on the hitch controller.LED light on - failed controller, replace the controller.LED light flashing - controller is OK.LED off - no power to controller, check power supply and its fuse.

2. Check the function of the armrest controller.a) Make sure the connector C137 to the armrest controller is plugged in.b) Check the LED light on the armrest controller.LED light on - failed controller, replace the controller.LED light flashing - controller is OK.LED off - no power to controller, check power supply and its fuse.

NOTE: The LED light for the armrest controller is located on the controller circuit board. It can be seen by lookingthrough the space besides connector C137 from the rear of the armrest.

3. Check the power supply to the Data Bus.The power supply to the Data Bus is from the switched power through Fuse #41.a) Make sure Fuse #41 is not burned out.b) Turn the tractor Key ’ON’. Check the power supply at Fuse #41. There should be 12 volts.If not, check the power supply from the switched power.

4. Check the integrity of Data Bus at the passive terminators.The following checks are basically looking into one end of the bus and check the terminator at the other end.a) Check from the passive terminator at the rear of the tractor.Disconnect the terminator at connector C175.With the key on, measure the voltage on the wires connected to C175.At pin 1, the red wire, it should read 12 volts battery voltage.At pin 2, the yellow wire, it should read 2.5 to 4 volts (2.5 V nominally).At pin 3, there should be continuity from pin 3 to the clean ground.At pin 4, the green wire, it should read 2.5 to 1 volts (2.5 V nominally).If the above checks are OK, it means that the front terminator and data bus wiring is OK.If not, go to next step.b) Check from the passive terminator at the front of the tractor.Reconnect the rear terminator and disconnect the front terminator at connector C205.With the key on, measure the voltage on the wires connected to C205.At pin 1, the red wire, it should read 12 volts battery voltage.At pin 2, the yellow wire, it should read 2.5 to 4 volts (2.5 V nominally).At pin 3, there should be continuity from pin 3 to the clean ground.At pin 4, the green wire, it should read 2.5 to 1 volts (2.5 V nominally).If the above checks are OK, it means that the front terminator and data bus wiring is OK.If not, check for bad connection and damaged wire along the Data Bus.


55-61

NOTE: When there is a bad connection along the Data Bus wiring, the fault code will be accompanied by multiplefault codes such as TRANS 12011, PTO 54120, INST 12011, AUX 12011, INST 12031, PERF 12031, TRANS12031 and PTO 54140.


NOTE: See schematic sections 49 through 52 at the rear of this section.

NOTE: Also see the Data Bus schematic foldouts 12 through 18 at the end of this section.


55-62

FAULT CODE HITCH 12031 Communication Lost With The Data BusCause:Hitch controller has found that is cannot communicate with the Data Bus.

Possible failure modes:1. Data Bus is not powered.

2. Data Bus is shorted.

3. Passive terminator failed.

Solution:Make sure the hitch controller is well connected to the Data Bus.Check the Data Bus function.

1. Check the connection to the hitch controller.a) Make sure the connector C059 is firmly plugged in to the hitch controller.b) Make sure the hitch controller has a good connection to the Data Bus.





NOTE: Also see the Data Bus schematic foldout at the end of this section.



55-63

FAULT CODE HITCH 12041 Communication Lost With The Instrument Controller

Cause:The hitch controller is not receiving or recognizing information from the instrumentation controller.

Possible failure codes:1. Bad connection between hitch controller and the instrument controller.2. Controller failure.

Solution:Make sure both the instrument controller and the hitch controller functioning OK.Check the Data Bus connections.

1. Check the function of the hitch controller.a) Make sure the connector to the hitch controller is plugged in.b) Check the LED light on the hitch controller.LED light on - failed controller, replace the controller.LED light flashing - controller is OK.LED off - no power to controller, check power supply and its fuse.

2. Check the function of the instrument controller.a) If there is no display and no back light on the tractor instrumentation, it is more likely that there is no powerto controller. Check power supply, its fuse, and the ground to the controller. Make sure the connector (C061) tothe instrument controller is plugged in.b) If there is a display on the tractor instrumentation but the display is erratic, such as unusual symbols, andother controllers claim communication is lost with the instrument controller, it is likely that the instrumentcontroller has failed. Replace the controller.c) If nothing can be found wrong with the instrument controller, go to step 3.




55-64



NOTE: Also see the Data Bus schematic foldouts 12 through 18 at the end of this section.



55-65

FAULT CODE HITCH 52230 Hitch Position Is Above Upper Limit Setting

Cause:Hitch controller found that hitch position is above upper limit.

Possible failure modes:1. The position of the hitch was above the upper limit setting when tractor was started.

2. Rock shaft position potentiometer failed.

3. Upper limit potentiometer failed in the armrest controller.

Solution:Make sure there is no mechanical interference in the hitch linkage.Raise the hitch upper limit setting above the hitch position or lower the hitch until the hitch upper limit setting isreached.Shut down the tractor and restart, the fault code should be gone.If the fault code is still there, do the following:

1. Test the function of the rockshaft potentiometer.Refer to fault code hitch 11069 for details.

2. If the rock shaft functions OK, test the function of the upper limit potentiometer in the armrest controller.Refer to fault code ARM 149 for details.



55-66

FAULT CODE HITCH 52260 Up/Down Fender Switch FailureCause:Hitch UP/DOWN fender switch failure.

Possible failure modes:1. Both switches are pushed together.

2. Switch was pushed before engine start up.

3. Switch was pushed while tractor was moving.

4. Switch Up was pushed when the hitch is against the upper limit setting.

5. Switch Down was pushed when the hitch is against the lower limit setting.

Solution:Fault code should not be there any more when the fender switch is released. If the code is still there, test the fenderswitch function and its wiring.

1. Make sure the hitch remote switch is not pressed. Check for mechanical interference which may cause theswitch be pressed. Shut down the tractor and start it again. Check the fault code in the hitch controller.If the fault code is gone, the problem is fixed.If the fault code appears again, go to the next step.

2. Test the function of the fender switch.Disconnect the fender switch connector. Check the continuities between the cavities.There should be no continuity between any two cavities when the switch is not pressed.There should be continuity between cavity A and B when the down switch is pressed.There should be continuity between cavity C and B when the up switch is pressed.For tractor with fender extension, check the two switches on the fender too.

3. If no of above, test the wiring from the hitch controller (C058) to the fender switch.The three wires should have good continuity from end to end, but no shortage between wires.



FAULT CODE HITCH 65535 Memory Not Cleared From The FactoryCause:The hitch controller memory has not been cleared from the factory.

Solution:This is not a fault. Clear the fault code from the controller.

55-67

Template Name: SM_foldTemplate Date: 1997_01_13

Alt= to hide template informationAlt+ to display template information

SECTION 55 - STANDARD INSTRUMENTATION - CHAPTER 3

(TRCU)

CONTROLLER

TRANSMISSION

(EDC)

HITCH CONTROLLER

TERMINATOR

PASSIVE

(PTO)

PTO CONTROLLER

(AUX)

CONTROLLER

HYDRAULIC

REMOTE

(ARU)

CONTROLLER

ARMREST

0.5-R

CDB-R20.5-R

CDB-R4

0.5-DG

CDB-DG20.5-DG

CDG-DG4

0.5-Y

CDB-Y20.5-Y

CDB-Y4

0.5-Bk

CDB-B20.5-Bk

CDB-B4

0.5-DG

CDB-DG80.5-DG

CDB-DG14

0.5-DG

CDB-DG16

0.5-Y

CDB-Y80.5-Y

CDB-Y14

0.5-Y

CDB-Y16

0.5-R

CDB-R80.5-R

CDB-R14

0.5-R

CDB-R16

0.5-Bk

CDB-B80.5-Bk

CDB-B14

0.5-Bk

CDB-B16

0.5-R

CDB-R12

0.5-Y

CDB-Y12

0.5-DG

CDB-DG12

0.5-Bk

CDB-B12

SHT2 SECTION 71

CONN 280M

TO AFS AT

SPL-1

CDBSPL-3

CDB

SPL-4

CDB

SPL-5

CDB

SPL-6

CDB

TERMINATOR

PASSIVE

CDB-3

CDB-5

CDB-4

CDB-13

CDB-33

CDB-7

CDB-8

CDB-12

CDB-11

CDB-35

4 3 2 1 175F

1 2 3 4 226M

R

Y

BK

DG

WHEN AFS IS INSTALLED

CONNECT CONNECTORS 175M AND 175F

1 2 3 4 175M

CDB-34 R

Y

BK

DG

CDB-2

15 16350M 4 5 59M

CDB-1

SPL-2

CDB

R

Y

BK

DG

8 7 56M

R

Y

BK

DG

R

Y

BK

DG

6 7 55M

66

65

64

63

10M

63

64

65

66

10FCDB-14

R

Y

BK

DG

4 5 137M

UNSWITCHED POWER

SWITCHED POWER

CONNECTOR

DIAGNOSTIC

(PMU)

MONITOR

PERFORMANCE

(ICU)

MONITOR

TRACTOR

STANDARD

0.5-DG

CDB-DG180.5-DG

CDB-DG17

0.5-DG

CDB-DG20

0.5-Y

CDB-Y180.5-Y

CDB-Y17

0.5-Y

CDB-Y20

0.5-R

CDB-R17

0.5-R

CDB-R20

0.5-Bk

CDB-B180.5-Bk

CDB-B17

0.5-Bk

CDB-B20

0.5-R

CDB-R18

1.0-Bk

177AM

0.5-R

CDB-R28

0.5-Bk

CDB-B28

0.5-Y

CDB-Y28

0.5-DG

CDB-DG28

0.8-Bk

177AJ

10A

#42

FUSE

5A

#41

FUSE

CDB1

SPL

FRONT TO REAR HARNESS

CAN DATA BUS

DATA BUS

IMPLEMENT

SPL-7

CDBSPL-8

CDB

CDB-16

CDB-15

CDB-17

CDB-20

CDB-21

CDB-22

SECTION 652SHT

AT SPL C14

TO CHASSIS GND

CDB-24

R

Y

BK

DG

C26

A B C D E F G H J 174M

CDB-28

R

Y

BK

DG

CDB-18

SHT1 SECTION 19

TO SPLICE C33

SHT1 SECTION 21

TO RING TERM 138A

R

Y

BK

DG

SPL-9

CDB

CDB-19

20

29

27

18

60M

18

27

29

20

60F

2 3161M

20

29

27

18

333M

18

27

29

20

333F

R

Y

BK

DG

CDB-26

1234 206F

4 3 2 1 206M

4 3 2 1 205A

1 2 3 4205F

4 3 2 1 205B 12 2244M

CDB-27

CDB-25

CDB-23

ENGINE OPTION

WITH ELECTRONIC

TO CONN 205A

CONNECTED

SPL-10

CDB

(GOV)

CONTROLLER

ENGINE

TERMINATOR

PASSIVE

TERMINATOR

PASSIVE

0.5-DG

CDB-DG22

0.5-R

CDB-R22

0.5-Y

CDB-Y22

0.5-Bk

CDB-B22

6 7 62M

0.5-R

CDB-R26

0.5-Y

CDB-Y26

0.5-Bk

CDB-B26

0.5-DG

CDB-DG26

SECTION 502SHT

AT SPLICE C7

TO CLEAN GND

1.0-R102D

1.0-R101G

1.0-R

69A

0.5

-D

G

CD

B-D

G15

0.5

-Y

C

DB

-Y15

0.5

-B

k

CD

B-B

15

1.0

-R

15

2A

0.5

-D

G

CD

B-D

G19

0.5

-Y

C

DB

-Y1

9

0.5

-R

C

DB

-R19

0.5

-B

k

CD

B-B

19

0.5

-D

G

CD

B-D

G2

1

0.5

-Y

C

DB

-Y21

0.5

-R

C

DB

-R21

0.5

-B

k

CD

B-B

21

0.5

-B

k

CD

B-B

23

0.5

-R

C

DB

-R23

0.5

-Y

C

DB

-Y23

0.5

-D

G

CD

B-D

G23

0.5

-B

k

CD

B-B

24

0.5

-R

C

DB

-R24

0.5

-Y

C

DB

-Y24

0.5

-D

G

CD

B-D

G24

0.5

-D

GC

DB

-DG

25

0.5

-R

C

DB

-R25

0.5

-Y

CD

B-Y

25

0.5

-B

kC

DB

-B25

0.5

-D

GC

DB

-DG

27

0.5

-R

C

DB

-R27

0.5

-Y

CD

B-Y

27

0.5

-B

kC

DB

-B27

0.5

-D

G

DG

G-R

13

0.5

-Y

C

DB

-B13

0.5

-R

C

DB

-DG

13

0.5

-B

k

CD

B-Y

13

0.5

-B

k

CD

B-B

11

0.5

-D

G

CD

B-D

G11

0.5

-R

C

DB

-R11

0.5

-Y

C

DB

-Y11

0.5

-D

G

CD

B-D

G7

0.5

-Y

C

DB

-Y7

0.5

-R

C

DB

-R7

0.5

-B

k

CD

B-B

7

0.5

-R

C

DB

-R5

0.5

-D

G

CD

B-D

G5

0.5

-Y

C

DB

-Y5

0.5

-B

k

CD

B-B

5

0.5

-R

C

DB

-R3

0.5

-D

G

CD

B-D

G3

0.5

-Y

C

DB

-Y3

0.5

-B

k

CD

B-B

3

CD

B-D

G1

0.5

-R

C

DB

-R1

0.5

-D

G

0.5

-Y

C

DB

-Y1

0.5

-B

k

CD

B-B

1

0.5

-B

k

CD

B-B

34

0.5

-D

G

CD

B-D

G3

4

0.5

-R

C

DB

-R34

0.5

-Y

C

DB

-Y34

0.5

-D

G

CD

B-D

G33

0.5

-B

k

CD

B-B

33

0.5

-Y

C

DB

-Y33

0.5

-R

C

DB

-R33

0.5

-B

k

CD

B-B

35

0.5

-D

G

CD

B-D

G35

0.5

-R

C

DB

-R3

5

0.5

-Y

C

DB

-Y35

0.5

-R

C

DB

-R15

CAN DATA BUS -Front to Rear Harness




55-68

55-69




INS

TR

UM

EN

T C

LU

ST

ER

(IC

U)

ALT EXCITE

CDB LO (TR)

OPEN

OPEN

TRANS FILT RESTRICTION

OPEN

ENGINE COOL TEMP

FUEL LEVEL 8VDC

ALT RPM

OPEN

FUEL RELAY SOL

OPEN

RADAR PRESENT

OPEN

HYD FILTER RESTRICTION

OPEN

AIR TO AIR

ENGINE OIL PRESS 5VDC

RADAR SIGNAL FREQ

ICU UNSWITCHED B+

OPEN

OPEN

SEAT SWITCH

HIGH BEAM IND

AIR FILTER

FUEL LEVEL (SIGNAL)

ENGINE OIL PRESS SIGNAL

WHEEL SPEED SIGNAL

OPEN

OPEN

CDB HI (TR)

OPEN

LIGHT SWITCH

OPEN

OPEN

TRANSMISSION OIL TEMP

SENSOR GROUND

LUBE OIL PRESS

CLEAN GROUND

ICU SWITCHED B+

CLEAN GROUND

CHASSIS GROUND

CLEAN GROUND

CHASSIS GROUND

CLEAN GROUND

CHASSIS GROUND

UNSWITCHED POWER

SWITCHED POWER

UNSWITCHED POWER

SWITCHED POWER

UNSWITCHED POWER

SWITCHED POWER

T

P

V

P

SEE SECTION 17

SEE SECTION 17

RADAR

ENGINE COOLANT TEMPERATURE

AIR TO AIR

FUEL SENDER

RADAR

INSTRUMENT CLUSTERINSTRUMENT CLUSTER

0.8-Bk

179AD

88F

201F

T

T

SECTION 24 SECTION 25 SECTION 26

J7

J8

J9

1

61M

32

33

34

35

36

37

38

39

40

61M

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

61M

8

333M

8

333F

0.8-W

602B 14

60F

14

60MC23

SHT 1 SECTION 21

TO RING TERMINAL 203F

SHT1, SECTION 19

TO SPLICE C33

0.8-W

602A

0.8-Y

216A

0.8-R

234A

0.8-DG

267A

0.8-Y

235A

1.0-Y

121A

0.8-DG

267D

1.0-R

202A

0.8-Y

199A

0.8-R

255A

0.8-Y

240A

0.8-Y

262A

0.8-Y

215A

0.8-K

724A

0.8-T

303A

0.8-K

727A

0.8-Y

256A

0.8-Y

236A

0.8-Y

266A

0.8-Bk

181A

1.0-Bk

216G

1.0-R

203A

0.8-Y

264A

2

60M

2

60F

37

36

10F

36

37

10M

31

30

25

4

3

22

15

23

13

7

24

26

28

12

8

5

10

60M

10

5

8

12

28

26

24

7

13

23

15

22

3

4

25

30

31

60F

A

B

171M

B

A

171F

SECTION 492SHT

CAVITY D6

JUMPER TO FUSE 33

83

10F

83

10M

F1

F612

7

333F

7

12

333M

3

22

9

8

334M

8

9

22

3

334F

C

B

A

216M

1

76A

1

76B

A

B

C

D

68F

D

C

B

A

68M

2

1

89M

1

2

89F

C

B

A

66M

A

B

C

66F

B

A

69M

A

B

69FT4

B

A

75F

A

B

75M

B

A

215M

A

B

215F

201F

88F

10

333F

10

333M

7

334M

7

334F

E2

SECTION 191SHT

AT SPLICE E1

TO CHASSIS GND

0.8-K

727D

0.8-K

727C

1.0-K

727B

SECTION 22 1SHT

TO DIODE AT CONN 267F

SECTION 22 1SHT

TO DIODE AT CONN 268F

SECTION 64 2SHT

TO CONN 13M, CAV T

SECTION 68 2SHT

CONN 133M, CAV 6

OPERATOR PRESENCE

SECTION 542 SHT

CAVITY C14

JUMPER TO FUSE 36

REF DES 262F

5 AMPS

FUSE #37

1.0-R

203B

1.0-Bk

216G

1.0-R

203C

SECTION 582 SHT

AT CONN 164M, CAV 1

TO FOOT THROTTLE

1.0-R

203C

5A

FUSE #34

-Bk179U

0.5-T

216E

0.8-Y

216D, SECTION 44 2SHT

TO CONN 56M, CAV 1

SECTION 37 2SHT

CONN CN1-B, CAV 33

CONTROLLER AT

TO TRANSMISSION

SECTION 502 SHT

TO CONN 10F, CAV 95

SECTION 572 SHT

AT RING TERM 200

TO CLEAN GND

1.0-R

283A

3.0-Bk

179K

5.0-Bk

179J

0.8-Bk

179R

0.8-Bk

179P

0.8-Bk

181D

SECTION 43 2SHT

CONN 192M, CAV 2

TO AXLE SOL AT

SECTION 43 2SHT

CONN 192M, CAV 4

TO AXLE SOL AT

0.8-Y

199A

0.8-Bk

179BG

0.8-Bk

179BH

0.8-Y

215A

0.8-Bk

181A

0.8-Y

264A

0.8-Bk

179T

1.0-Bk

179S

0.8-Y

199B

0.8-Bk

181B

0.8-Y

215B

0.8-Y

256A

0.8-Y

236A

0.8-Y

266A

0.8-R

255A

0.8-Y

240A

0.8-Y

262A

1.0-Bk

179L

0.8-R

255B

0.8-Y

264B

0.8-Y

199D

0.8-Y

262B

0.8-Y

236B

0.8-Y

256B

0.8-Y

266B

0.8-Y

240B

0.8-Y

216A

0.8-R

234A

0.8-Y

235A

1.0-Y

121A

0.8-R

234B

0.8-Y

216B

0.8-Y

235B

2.0-Y

121B

0.8-DG

267C0.8-DG

267D

0.8-DG

267A 0.8-DG

267B

SECTION 19 1SHT

AT RING TERM 85F

TO ALTERNATOR

SECTION 19 1SHT

AT RING TERM 86F

TO ALTERNATOR EXCITE 1.0-Y

121_D

0.8-Y

235C

SECTION 361 SHT

FUSE #17

JUMPER TO HORN

SECTION 271 SHT

TO PMU CONN 62M, CAV 21.0-R

202C

1.0-R

202B 1.0-R

101B

REF DES 261F

FUSE #16 5 AMP

SECTION 221 SHT

TO DIODE 267M

0.8-Y

240C

0.8-Y

256B

0.8-Y

266B

0.8-R

255B

0.8-Y

240B

0.8-Y

256C

0.8-Y

266C

0.8-R

255C

1.0-DG

126_W

2.0-Bk

181C 2.0-Bk

181E

0.8-Y

216C

SECTION 40 2SHT

AT CONN CN1-B, CAV 34

TO TRANS CONTROLLER

0.8-DG

267B

0.8-DG

267C

0.8-Y

215C

0.8-Bk

181F

0.8-Bk

181G

0.8-Y

240C

0.8-Y

235C

FILTER RESTRICTION

TRANSMISSION

FILTER RESTRICTION

HYDRAULIC

0.8-Bk

181D

0.8-R

234B

0.8-Y

236B

0.8-Bk

179P

0.8-Y

264B

OIL TEMPERATURE

TRANSMISSION

SPEED

WHEEL

0.8-Bk

179N

0.8-Y

199D

0.8-Y

262B

1.0-R

283B

RESTRICTION SWITCH

AIR FILTER

NON ELECTRONIC ENGINE ONLY

ENGINE OIL PRESSURE

0.8-Bk

600D

0.8-Bk

179R

0.8-Bk

181H

0.8-R

255C

0.8-Y

256C

0.8-Y

266C

0.8

INSTRUMENT CLUSTER

1.0-R203C

-Bk179U 0.8

0.8

-Y

215

D

2.0

-B

k2

16F




55-70

55-71




SIGNAL, MFD AUTO 1

SWITCH POWER 2

SIGNAL, MFD ON 3

NOT USED 4

NOT USED 5

NOT USED 6

NOT USED 7

NOT USED 8

NOT USED 9

NOT USED 10

NOT USED 1

SWITCH POWER 2

SWITCHED B+ 3

SIGNAL, SLIP SELECT 4

SWITCH POWER 5

SIGNAL, SLIP SET 6

NOT USED 7

NOT USED 8

LED GROUND 9

SIGNAL, PILOT/AUTO HITCH ADJ LED 10

SIGNAL, POSITION A (DIFF LOCK AUTO) 1

SWITCH, POWER 2

SIGNAL, POSITION C (DIFF LOCK ON) 3

NOT USED 4

NOT USED 5

NOT USED 6

GROUND 7

NOT USED 8

NOT USED 9

SIGNAL, DIF LOCK ON PILOT/CONT LED 10

SIGNAL, AUX 5 EXTEND 1

SWITCH, POWER 2

SIGNAL, AUX 5 RETRACT 3

NOT USED 4

NOT USED 5

NOT USED 6

NOT USED 7

NOT USED 8

NOT USED 9

NOT USED 10

ARMREST CONTROLLER (ARU)

12

37

8

MF

D

12

37

81

23

78

12

37

8

DIF

F LO

CK

AU

X 5T

H R

EM

OT

E

ED

C S

LIP C

ON

TR

OL

ON EXTEND

OFF

ON RETRACT

AUTO

OFF

ON

OFF

SLIP SELECT

SLIP SET

ON AUTO

OFF

ON

9

OFF

SLIP SET

45

69

2.4K

910

910

RIG

HT

HA

ND

AR

MR

ES

T C

ON

TR

OLLE

R (A

RM

)

SECTION 46

DIF

F L

OC

K O

N

SWITCH

AUX 5

SW205

SWITCH

LOCK

DIFF

SW203

SWITCH

SLIP

WHEEL

SW202

SWITCH

MFD

SW201




55-72

55-73




AUXILIARY 1 SWITCH 1

BATTERY FEED 2

+8VDC 3

AUXILIARY 1 LEVER 4

AUXILIARY GROUND 5

NOT USED 6


BATTERY FEED 2

+8VDC 3

AUXILIARY 2 LEVER 4

AUXILIARY GROUND 5

NOT USED 6


BATTERY FEED 2

+8VDC 3

AUXILIARY 3 LEVER 4

AUXILIARY GROUND 5

NOT USED 6


BATTERY FEED 2

+8VDC 3

AUXILIARY 4 LEVER 4

AUXILIARY GROUND 5

NOT USED 6

HITCH POSITION COMMAND - HIGH 1

HITCH LOAD COMMAND - SIGNAL 2

HITCH LOAD COMMAND - LOW 3

HITCH POSITION COMMAND - HIGH 1

HITCH POSITION COMMAND - SIGNAL 2

HITCH POSITION COMMAND - LOW 3

AUXILIARY 5 FLOW - HIGH 1

AUXILIARY 5 FLOW - SIGNAL 2

AUXILIARY 5 FLOW - LOW 3

UNSWITCHED POWER

SWITCHED POWER


CLEAN GROUND

CHASSIS GROUND

SECTION 47

HA

ND

AR

MR

ES

T C

ON

TR

OLLE

R

FLOW

AUX 5

J207

COMMAND

HITCH POS

J206

COMMAND

HITCH LOAD

J205

AUX 4

J204

AUX 3

J203

AUX 2

J202

AUX 1

J201




55-74

55-75




THROTTLE

J208

THROTTLE - HIGH 1

THROTTLE - SIGNAL 2

THROTTLE - LOW 3

THROTTLE - SWITCH 1 4

BATTERY FEED 5

THROTTLE - SWITCH 2 6

UP/DOWN

HITCH

J210

HITCH UP 4

HITCH DOWN 1

NOT USED 5

NOT USED 6

FBAT 2

HITCH DOWN FAST 3

SHIFT

TRCU BUMP

J211 BATTERY FEED 1

TRANSMISSION CONTROLLER UNIT BUMP UP 2

TRANSMISSION CONTROLLER UNIT BUMP DOWN 3

SCRAPER

OR

CREEPER

STCU

SW206

CREEPER, NOT USED / SCRAPER POSITION A 1

SWITCH, POWER 2

SIGNAL, CREEPER / SCRAPER POSITION C 3

NOT USED 4

NOT USED 5

NOT USED 6

NOT USED 7

NOT USED 8

NOT USED 9

NOT USED 10

AUTO SHIFT

SW204

NOT USED 1

SWITCH, POWER 2

SIGNAL, AUTO SHIFT 3

NOT USED 4

NOT USED 5

NOT USED 6

NOT USED 7

NOT USED 8

NOT USED 9

NOT USED 10

CLEAN GROUND

CHASSIS GROUND

UNSWITCHED POWER

SWITCHED POWER


SECTION 48

C

E

D

J

K

G

1

2

3

12

37

8

SC

RA

PE

R

12

37

8

CR

EE

PE

R

INS

ET

"A"

12

37

8

AU

TO

SH

IFT

1

2

3 HIT

CH

UP

/DO

WN

4

AUX 3 AUTO

AUX 1 AUTO

OFF

NONE

ON (NOM)

OFF

NONE

ON (MOM)

ON POS A

OFF

ON POS C

9

9

UP

DOWN

FBAT

DOWN

5

6

RIG

HT

HA

ND

AR

MR

ES

T C

ON

TR

OLLE

R (A

RM

)

4

1

5

6

2

3

J210O

PT

ION

SW

ITC

H

FO

R

"A"

INS

ET

SE

E




55-76

55-77




SECTION 49 SECTION 50

PT

O

J213

1 2 3

PR

OG

SH

IFT

J212

5 1 6 2 3 4

HA

RN

ES

S

MA

IN

J1

#13

7

1 2 3 4 5 6 7 8 9 10 11 12

PA

NE

L

SE

CO

ND

AR

Y

J2

1 2 3 4 5 6 7 8 9 10 11 12 13 14

UNSWITCHED POWERUNSWITCHED POWER

SWITCHED POWER SWITCHED POWER

CLEAN GROUND

CHASSIS GROUND

CLEAN GROUND

CHASSIS GROUND

1

2

3

4

5

6

7

8

9

AUX 1 - FLOW

AUX 2 - FLOW

AUX 3 - FLOW

AUX 4 - FLOW

AUX -TIMER

HITCH - UPPER LIMIT

HITCH - DROP RATE

HITCH - TRAVEL

AUX EXTEND LIMIT SET

AUX RETRACT LIMIT SET

SECONDARY

CONTROL

PANEL

ARMREST CONTROLLER (ARU) HITCH CONTROL SYSTEM (EDC)

10

11

12

13

14

3.0-Bk

179K 3.0-Bk

179Y

0.8-Bk

179AU

0.8-Bk

179AV

0.8-Y

179AW

1.0-Bk

179AZ

0.8-Bk

177AJ

J7

0.8-Bk

179BP

1 2 3

PROGRAMMABLE SHIFT

ON

DW

N

OF

F

ON

UP

SECTION 251 SHT

AT SPLICE F1

TO CLEAN GND

SECTION 61 2SHT

AT CONN 139F, CAV N

TO HVAC SIGNAL GND

SECTION 61 2FUSE BLOCK 261 SHT

TO GROUND CONTINUITY FUSE #28

SECTION 16 1SHT

TO SPLICE C26

CLEAN GROUND

5 1 6 3 2 4 J212 1 2 3

RIGHT HAND ARMREST CONTROLLER (ARM)

95

10M

95

10F

C7

SECTION 25 1 SHT

CAVITY D4

JUMPER TO FUSE 34

SECTION 211SHT

AT SPLICE C9

TO SWITCHED B+

2.0-R

200F

SECTION 45 2SHT

TO CONN 10F, CAV 29

10A

FUSE #33

6 7 8 9 10 11 12137M

SECTION 58 2SHT

AT CONN 258F, CAV 2

TO CRUISE CONTROL

SECTION 61 2SHT

AT CONN 139F, CAV P

TO HVAC SIGNAL GND

SECTION 70 2SHT

AT CONN 273M, CAV 4

TO ISO11783

8.0

-R

65A

1.0

-B

k1

79Z

0.8

-Y

293B

BA

TT

ER

Y F

EE

D

PT

O O

FF

PT

O O

N

SIG

NA

L, P

RO

GR

AM

MA

BLE

SH

IFT

DO

WN

SW

ITC

H, P

OW

ER

SIG

NA

L, P

RO

GR

AM

MA

BLE

SH

IFT

UP

NO

T U

SE

D

NO

T U

SE

D

NO

T U

SE

D

ST

CU

CO

MB

O

HI-

LO R

ELA

Y

NO

T U

SE

D

CA

N D

AT

A B

US

HIG

H

CA

N D

AT

A B

US

LO

W

NO

T U

SE

D

PT

O O

N

SO

L P

WR

FR

ON

T D

IFF

LO

CK

RE

AR

DIF

F L

OC

K

SY

ST

EM

GR

OU

ND

BA

TT

ER

Y

+8V

DC

AU

XIL

IAR

Y G

RO

UN

D

AU

XIL

IAR

Y 1

- F

LOW

AU

XIL

IAR

Y 2

- F

LOW

AU

XIL

IAR

Y 3

- F

LOW

AU

XIL

IAR

Y 4

- F

LOW

AU

XIL

IAR

Y -

TIM

ER

HIT

CH

- U

PP

ER

LIM

IT

HIT

CH

- D

RO

P R

AT

E

HIT

CH

TR

AV

EL

AU

XIL

IAR

Y E

XT

EN

D L

IMIT

SE

T

AU

XIL

IAR

Y R

ET

RA

CT

LIM

IT S

ET

BA

TT

ER

Y F

EE

D

1.0

-B

k17

9Z




55-78

55-79




HIT

CH

CO

NT

RO

LLE

R (

ED

C)

HITCH SOLENOID B+

HITCH SOLENOID UP

HITCH SOLENOID DOWN

OPEN

OPEN

OPEN

PICKUP HITCH LATCH

OPEN

REMOTE SWITCH UP

REMOTE SWITCH DOWN

CLEAN GROUND

EDC AND REMOTE B+

EDC +8VDC

LEFT PIN SIGNAL

RIGHT PIN SIGNAL

CDB LO (TR)

CDB HI (TR)

ROCK SHAFT POT HI

ROCK SHAFT POT SIG

ROCK SHAFT POT LOW

OPEN

OPEN

EDC LOAD PIN GND

RIDE CONTROL

UNSWITCHED POWER

SWITCHED POWER

CHASSIS GROUND

CLEAN GROUND

UNSWITCHED POWER

SWTICHED POWER

CLEAN GROUND

CHASSIS GROUND

RH REMOTE

HITCH SWITCH

LH REMOTE

HITCH SWITCH

CENTER REMOTE

HITCH SWITCH

HITCH CONTROL SYSTEM (EDC)

SECTION 52SECTION 51

LOWER

RAISE

LOWER

RAISE

LOWER

RAISE

J5

HITCH CONTROL SYSTEM (EDC)

1

2

3

7

8

ON

OFF

4

5

6

9

10

0.8-DU518A

1

2

3

7

8

RIDE CONTROL

OFF

4

5

6

9

10

PICKUP HITCH

1

2

3

4

5

6

7

8

9

10

11

12

58M

1

2

3

59M

6

7

8

9

10

11

12

T17

T18

1.0-LU

529C

1.0-LU

527C

1.0-R

528E

1.0-Bk

179AC

1.0-R

500D

1.0-LU

526A

1.0-LU

513A

0.8-R

516A

0.8-Bk

508A

0.8-LU

514A

0.8-Bk

517A

0.8-LU

515A

0.8-LU

507A

0.8-R

506A

SECTION 382SHT

AT SPLICE T3

TO CLEAN GND

10A

FUSE #39

CONNECTOR

WHITE COLORED

C

B

A

313MB

(GREEN)

J1

(BROWN)

J2

T14

T16

T15

0.8-Bk517C

0.8-LU

514A

0.8-R

516B C

B

A

153M

A

B

C

153FDRAFT PIN

RIGHT HAND

DRAFT PIN

LEFT HAND

A

B

C

154F

C

B

A

154M

0.8-LU

515A

0.8-Bk

517B

9

10F

9

10M

C

B

A

312M

10

9

8

7

6

5

4

3

2

1

119M

0.8-DU518B

0.8-R

531H

0.8-DU

512C

HITCH LATCH

WITH PICKUP

RIDE CONTROL

SWITCH

CONTROL

STD RIDE

SECTION 432 SHT

AT SPLICE C30

TO SWITCHED B+

0.8-R

500K

0.8-LU

513E

0.8-LU

526E

0.8-R

500J

0.8-LU

526G

0.8-LU

513G

C

B

A

313MA

0.8-R

500H

0.8-LU

526F

0.8-LU

513F

SECTION 45 2 SHT

FUSE BLOCK 262, CAV C10

JUMPER TO FUSE #38 1.0-R

596A

1.0-R

528E

1.0-LU

529C

1.0-LU

527C

A

B

C

314M

C

B

A

314F

0.8-LU

526C

0.8-LU

513C

1.0-R

500B

0.8-R

500G

A

B

C

315M

C

B

A

315F

0.8-R

500E

0.8-LU

513B

0.8-LU

526B

C

B

A

155M

74

75

10F

75

74

10M

POTENTIOMETER

ROCKSHAFT

0.8-DU

518B0.8-DU

518A

0.8-DU

512C0.8-DU

512A

0.8-Bk

508A

0.8-LU

507A

0.8-R

506A

0.8-R

516C

HITCH DOWN

SOLENOID

HITCH UP

SOLENOID

1.0-R

528B

1.0-R

528A

1.0-LU

527A

1.0-LU

529A

1.0-R

528C

2

1

151M

1

2

152F

1

2

151F

2

1

152M

V1

5

4

2

1

3

6

335M

6

3

1

2

4

5

335F




55-80

section 55 chapter 3 - dmcpubs.com

Documents