Dtc C1531 Ecu Malfunction
DESCRIPTION
INSPECTION PROCEDURE
CHECK FOR DTC
DTC C1531 ECU Malfunction |
DTC C1532 ECU Malfunction |
DTC C1533 ECU Malfunction |
DTC C1534 ECU Malfunction |
DTC C1535 ECU Malfunction |
DESCRIPTION
The fail-safe function operates to stop power assist when DTCs indicating ECU malfunctions are stored. However, the power assist operation continues when DTC C1533 or C1534 is stored because it indicates an EEPROM error in the ECU.DTC No.
| DTC Detection Condition
| Trouble Area
|
C1531
| ECU internal malfunction (CPU malfunction)
| Power steering ECU
|
C1532
| ECU internal malfunction (Peripheral circuit malfunction)
|
C1533
| ECU internal malfunction (Substrate temperature sensor malfunction)
|
C1534
| ECU internal malfunction (EEPROM error)
|
C1535
| ECU internal malfunction (Steering wheel location data error)
|
INSPECTION PROCEDURE
- NOTICE:
- If the power steering ECU has been replaced with a new one, perform the assist map writing and the torque sensor zero point calibration (COROLLA_ZRE142 RM00000275305DX.html).
Check for DTCs (COROLLA_ZRE142 RM00000275005PX.html).
- OK:
- DTCs other than C1531, C1532, C1533, C1534 and C1535 are not output.