C1138

C1138 4WAS SYSTEM





Description
The ABS actuator and electric unit (control unit) and the 4WAS control unit exchange signals via the CAN communication line.




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
1. Turn the ignition switch ON.
2. Perform self-diagnosis for "ABS" with CONSULT-III.
Is DTC "C1138" detected?
YES - Proceed to diagnosis procedure. SEE Diagnosis Procedure.
NO - INSPECTION END




Diagnosis Procedure
1. Perform self-diagnosis for "4WAS(FRONT)" and "4WAS(MAIN/RAS/HICAS)" with CONSULT-III.
Is any item indicated on the self-diagnosis display?
YES - Check the malfunction system.
NO - GO TO 2.
2.ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
1. Erase self-diagnosis results for "ABS" with CONSULT-III.
2. Turn the ignition switch OFF.
3. Start the engine. Drive the vehicle for a while.
4. Make sure that 4WAS warning lamp turns OFF.
5. Stop the engine. Perform self-diagnosis for "ABS" with CONSULT-III.
Is DTC "C1138" detected?
YES - Replace ABS actuator and electric unit (control unit).
NO - Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with harness connector. If any items and damaged, repair or replace error-detected parts.




Special Repair Requirement
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit). Special Repair Requirement.
- END