C1531

POWER STEERING: ELECTRONIC POWER STEERING SYSTEM: C1531: ECU Malfunction

DTC C1531 - ECU Malfunction

DTC C1532 - ECU Malfunction

DTC C1533 - ECU Malfunction

DTC C1534 - ECU Malfunction

DTC C1555 - Motor Relay Welding Failure

DESCRIPTION

If the power steering ECU assembly detects these DTCs, it will shut off the motor relay circuit (built into the power steering ECU assembly) and stop power assistance. However, power assistance will continue if DTC C1533 or C1534 is output.






INSPECTION PROCEDURE

PROCEDURE

1. RECONFIRM DTC
(a) Check for DTCs Electronic Power Steering System.
OK:
DTCs other than C1531, C1532, C1533, C1534 and C1555 are not output.
NOTICE:
If replacing the power steering ECU assembly, initialize the rotation angle sensor and calibrate the torque sensor zero point Electronic Power Steering System.

NG -- REPAIR CIRCUIT INDICATED BY OUTPUT CODE
OK -- REPLACE POWER STEERING ECU ASSEMBLY