C1531

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: C1531: ECU Malfunction

DTC C1531 - ECU Malfunction

DTC C1533 - ECU Malfunction

DTC C1534 - ECU Malfunction

DESCRIPTION

If the power steering ECU assembly detects these DTCs, it will shut off the motor current sensor, power source relay, motor relay circuit (built into the power steering ECU assembly) and stop power assistance.






INSPECTION PROCEDURE

PROCEDURE

1. RECONFIRM DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC except C1531, C1533, C1534 is not output.
NOTE:
If replacing the power steering ECU assembly, initialize the rotation angle sensor value and calibrate the torque sensor zero point Power Steering System.

NG -- REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
OK -- REPLACE POWER STEERING ECU ASSEMBLY