P1765

DTC P1765 TCS-ITM CAN ERROR





COMPONENT LOCATION

GENERAL DESCRIPTION
Without TCS (Traction Control System), 4WD ECM receives the signal directly from the wheel speed sensors. With TCS, 4WD ECM receives the signal through CAN communication line from TCS module which gets the wheel speed sensor signal from the sensors.

DTC DESCRIPTION
This DTC is about TCS module - ECM Communication Line and will set when there are no signals from the wheel speed sensors to 4WD ECM.





DTC DETECTING CONDITION





SCHEMATIC DIAGRAM





WAVEFORM INSPECTION

TERMINAL & CONNECTOR INSPECTION
1. Many malfunctions in the electrical system may be caused from poor harness and terminals. These faults can be caused by interference from other electrical systems and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Has a problem been found?
YES Repair as necessary and go to "Verification of Vehicle Repair" procedure.
NO Go to the next procedure.

GROUND CIRCUIT INSPECTION
1. Short to ground inspection
1) IG KEY OFF, ENG OFF
2) 4WD ECM connector and TCS module: Disconnect.





3) Measure resistance between terminal 4 or 5 of 4WD ECM harness connector and chassis ground.
Specification: Approximately 0 ohms
Is resistance display near the specified value?
YES Proceed next inspection procedure.
NO Repair ground to short circuit.
If problem is solved, go to the "Verification of Vehicle Repair".

SIGNAL CIRCUIT INSPECTION
1. IG KEY OFF, ENG OFF
2. 4WD ECM connector and TCS module~ Disconnect.
3. Measure resistance between terminal 5 of 4WD ECM harness connector and terminal 11 of TCS control module harness connector.





4. Measure resistance between terminal 4 of 4WD ECM harness connector and terminal 10 of TCS control module harness connector.
Specification: Approximately 0 ohms
Is resistance display near the specified value?
YES Replace with normal TCS control module temporarily and check if vehicle run normally. If trouble is disappeared, replace TCS control module.
If problem is solved, go to the "Verification of Vehicle Repair".
NO Repair open circuit.
If problem is solved, go to the "Verification of Vehicle Repair".

VERIFICATION OF VEHICLE REPAIR
1. IG KEY ON, ENG ON
2. TCS module connector and 4WD ECM connector: Connect.
3. Clear the DTCs with a scan tool.
4. Start and drive vehicle in gear and maintain vehicle speed is approximately 10 km/h or less (6 mph or less).
5. Check TCS signals and verify the malfunction.
Does the scan tool display any DTC relevant to this signal?
YES Go to the applicable troubleshooting procedure.
NO System OK.