DTC C1531/31: EPS ECU Circuit Malfunction; DTC C1532/32: EPS ECU Circuit Malfunction; DTC C1533/33: EPS ECU Circuit Malfunction; DTC C1534/34: EPS ECU Circuit Malfunction; DTC C1535/35: Steering Wheel Location Data Error: Description
The fail-safe function operates to stop power assist when DTCs indicating ECU malfunctions are stored. However, power assist operation continues when DTC C1533/33 or C1534/34 is stored because it indicates an EEPROM error in the ECU.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1531/31 | ECU internal malfunction (CPU malfunction) | Power steering ECU assembly |
| C1532/32 | ECU internal malfunction (Peripheral circuit malfunction) | |
| C1533/33 | ECU internal malfunction (Substrate temperature sensor malfunction) | |
| C1534/34 | ECU internal malfunction (EEPROM error) | |
| C1535/35 | ECU internal malfunction (Steering wheel location data error) |