C1914

C1914 REAR WHEEL STEERING ANGLE SENSOR





Description
- It detects the steering angle condition of rear wheel.
- 2 systems (main and sub sensor) are equipped.




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
With CONSULT-III
1. Turn the ignition switch from OFF to ON.
2. Perform "4WAS(MAIN)/RAS/HICAS" self-diagnosis.
Without CONSULT-III
1. Start the engine.
2. Perform the self-diagnosis. Diagnosis Description.
Is DTC "C1914" or "RAS warning lamp flickering pattern:24" detected?
YES - Proceed to diagnosis procedure. C1914.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK REAR WHEEL STEERING ANGLE SENSOR POWER SUPPLY
1. Turn the ignition switch OFF.
2. Check the voltage between RAS control unit harness connector and ground.





3. Turn the ignition switch ON.

CAUTION:
Never start the engine.
4. Check the voltage between RAS control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 2.
NO - Replace RAS control unit. RAS Control Unit.
2.CHECK REAR WHEEL STEERING ANGLE SENSOR
Check the rear wheel steering angle sensor. C1914.
Is the inspection result normal?
YES - GO TO 3.
NO - Replace RAS actuator assembly. Exploded View.
3.CHECK REAR WHEEL STEERING ANGLE SENSOR POWER SUPPLY CIRCUIT
1. Disconnect RAS control unit harness connector.
2. Check the continuity between RAS control unit harness connector and rear wheel steering angle sensor harness connector.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace the harnesses and connectors.
4.PERFORM SELF-DIAGNOSIS
1. Connect RAS control unit harness connector.
2. Connect the rear wheel steering angle sensor harness connector.
With CONSULT-III
1. Turn the ignition switch from OFF to ON.
2. Perform "4WAS(MAIN)/RAS/HICAS" self-diagnosis.
Without CONSULT-III
1. Start the engine.
2. Perform the self-diagnosis. Diagnosis Description.
Is DTC "C1914" or "RAS warning lamp flickering pattern:24" detected?
YES - Replace RAS control unit. RAS Control Unit.
NO - GO TO 5.
5.CHECK INFORMATION
With CONSULT-III
1. Select "DATA MONITOR" of "4WAS(MAIN)/RAS/HICAS".
2. Check the "DATA MONITOR" value of each DTC detected with the self-diagnosis function. With Rear Active Steer.
Is each data the standard value?
YES - Check each harness connector pin terminal for disconnection.
NO - Replace RAS control unit. RAS Control Unit.




Component Inspection
1.CHECK REAR WHEEL STEERING ANGLE SENSOR
1. Turn the ignition switch OFF.
2. Disconnect the rear wheel steering angle sensor harness connector.
3. Check the resistance between the rear wheel steering angle sensor connector.





Is the inspection result normal?
YES - INSPECTION END
NO - Replace RAS actuator assembly. Exploded View.




Special Repair Requirement

BEFORE REPLACING RAS CONTROL UNIT
- Record the self-diagnosis results (history).

CAUTION:
- Never erase the memory (history) of self-diagnosis results when replacing RAS control unit after diagnosis.
- Erase the memory of the self-diagnosis results (record) after printing out or recording all the values of "DATA MONITOR".