4WAS Warning Lamp Does Not Turn Off

4WAS WARNING LAMP DOES NOT TURN OFF





Description
4WAS system stops (error) when turning 4WAS warning lamp ON.




Diagnosis Procedure
1.PERFORM SELF-DIAGNOSIS (4WAS MAIN CONTROL UNIT)
With CONSULT-III
Perform self-diagnosis for "4WAS(MAIN)/RAS/HICAS".
Is any DTC detected other than "C1930" or "C1931"?
YES - GO TO 2.
NO - GO TO 3.
2.PERFORM TROUBLE DIAGNOSIS (4WAS MAIN CONTROL UNIT)
With CONSULT-III
1. Check the error system detected from the self-diagnosis.
2. Perform self-diagnosis for "4WAS(MAIN)/RAS/HICAS" again after the inspection.
Is any error system detected?
YES - Check the error system.
NO - GO TO 3.
3.PERFORM SELF-DIAGNOSIS (4WAS FRONT CONTROL UNIT)
With CONSULT-III
Perform self-diagnosis for "4WAS(FRONT)".
Is any error system detected?
YES - Check the error system.
NO - GO TO 4.
4.PERFORM SELF-DIAGNOSIS (4WAS MAIN CONTROL UNIT)
With CONSULT-III
Perform self-diagnosis for "4WAS(MAIN)/RAS/HICAS".
Is any error system detected?
YES - Check the error system.
NO - Check that there is no malfunction in each harness connector pin terminal or disconnection.