C1555

POWER STEERING: ELECTRONIC POWER STEERING SYSTEM: C1524: Motor Circuit Malfunction

DTC C1524 - Motor Circuit Malfunction

DTC C1555 - Motor Relay Welding Failure

DESCRIPTION

The power steering ECU supplies current to the power steering motor through this circuit.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK POWER STEERING ECU




(a) Turn the power switch ON (IG).
(b) Measure the voltage of the ECU.
Standard voltage:






NG -- REPLACE POWER STEERING ECU
OK -- Continue to next step.

2. CHECK POWER STEERING MOTOR




(a) Turn the power switch OFF.
(b) Disconnect the P9 power steering ECU connector.
(c) Measure the resistance of the wire harness side connector.
Standard resistance:






NG -- REPLACE STEERING COLUMN ASSEMBLY
OK -- REPLACE POWER STEERING ECU