POWER STEERING SYSTEM, Diagnostic DTC:C1521, C1531, C1532, C1533, C1534

DTC Code DTC Name
C1521 Short in Motor Circuit
C1531 ECU Malfunction
C1532 ECU Malfunction
C1533 Temperature Sensor Circuit is Low or High
C1534 EEPROM

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Note
C1521 Short in Motor Circuit Motor overcurrent Power steering ECU assembly EPS warning light: Comes on -
C1531 ECU Malfunction

ECU internal malfunction

(CPU malfunction)

 Power steering ECU assembly EPS warning light: Comes on -
C1532 ECU Malfunction

ECU internal malfunction

(Peripheral circuit malfunction)

 Power steering ECU assembly EPS warning light: Comes on -
C1533 Temperature Sensor Circuit is Low or High

ECU internal malfunction

(Substrate temperature sensor malfunction)

 Power steering ECU assembly EPS warning light: Does not come on -
C1534 EEPROM

ECU internal malfunction

(EEPROM error)

 Power steering ECU assembly EPS warning light: Torque and motor rotation angle sensor adjustment is set to the default value and control is continued. In this case, the warning light illuminates. -

CAUTION / NOTICE / HINT

Note

If the power steering ECU assembly has been replaced, perform assist map writing.

Click here

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Chassis > EMPS > Clear DTCs

    2. Check for DTCs.

      Click here


      Chassis > EMPS > Trouble Codes
      Result
      Result Proceed to
      DTCs other than C1521, C1531, C1532, C1533 or C1534 are not output. A
      DTCs other than C1521, C1531, C1532, C1533 or C1534 are output. B

    A

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here