C1554

POWER STEERING: POWER STEERING SYSTEM: C1554,C1555: Power Supply Relay Failure

DTC C1554 - Power Supply Relay Failure

DTC C1555 - Motor Relay Welding Failure

DESCRIPTION

If the power steering ECU detects these DTCs, it will shut off the motor relay circuit (built into the power steering ECU) and stops power assist.






INSPECTION PROCEDURE

PROCEDURE

1. RECONFIRM DTC
(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(b) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC is not output.
NG -- REPLACE POWER STEERING ECU
OK -- CHECK INTERMITTENT PROBLEMS