POWER STEERING SYSTEM (for 2AR without Wireless Door Lock), Diagnostic DTC:C1531, C1532, C1533, C1534, C1535
| DTC Code | DTC Name |
|---|---|
| C1531 | ECU Malfunction |
| C1532 | ECU Malfunction |
| C1533 | ECU Malfunction |
| C1534 | ECU Malfunction |
| C1535 | ECU Malfunction |
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 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 assembly |
| 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
Note
If the power steering ECU assembly has been replaced with a new one, perform assist map writing and torque sensor zero point calibration Click here.
PROCEDURE
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CHECK FOR DTC
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Check for DTCs Click here.
OK DTCs other than C1531, C1532, C1533, C1534 and C1535 are not output.
NG 
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Click here
OK 
REPLACE POWER STEERING ECU ASSEMBLY Click here
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