If the power steering ECU detects these DTCs, it will shut off the motor current sensor, power source relay, motor relay circuit (built into the power steering ECU) and stop or limit power assistance. However, power assistance will continue if DTC C1533 or C1534 is output.
|DTC Code||Detection Condition||Trouble Area|
|C1531||ECU internal malfunction (CPU malfunction) is detected||Power steering ECU|
|C1533||ECU internal malfunction (Substrate temperature sensor malfunction) is detected||Power steering ECU|
|C1534||ECU internal malfunction (EEPROM error) is detected||Power steering ECU|
Check for DTCs Click here.
|Only DTC C1531, C1533 or C1534 is output||A|
|DTCs other than DTC C1531, C1533 or C1534 are output||B|
If replacing the power steering ECU, initialize the rotation angle sensor value and calibrate the torque sensor zero point Click here.
GO TO DIAGNOSTIC TROUBLE CODE CHART Click here