POWER STEERING SYSTEM, Diagnostic DTC:C1531, C1532, C1533, C1534

DTC Code DTC Name
C1531 ECU Malfunction
C1532 ECU Malfunction
C1533 ECU Malfunction
C1534 ECU Malfunction

DESCRIPTION

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

DTC No. DTC Detection Condition Trouble Area
C1531 ECU internal malfunction (CPU malfunction) Power steering ECU
C1532 ECU internal malfunction (Peripheral circuit malfunction) Power steering ECU
C1533 ECU internal malfunction (Substrate temperature sensor malfunction) Power steering ECU
C1534 ECU internal malfunction (EEPROM error) Power steering ECU

INSPECTION PROCEDURE

PROCEDURE


  1. RECONFIRM DTC


    1. Clear the DTCs Click here.

    2. Check for DTC Click here.

      OK
      DTC is not output.

    NG

    REPLACE POWER STEERING ECU Click here

    OK

    CHECK INTERMITTENT PROBLEMS