Toyota Obd Ii C1532

The fail-safe function operates to stop power assist when DTCs indicating ECU malfunctions are output. However, the power assist operation continues when DTC C1534/34 is output because it indicates an EEPROM error in the ECU.

DTC No.

DTC Detection Condition

C1531/31

ECU internal malfunction (CPU malfunction)

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

Steering wheel location data error (LHD or RHD)

INSPECTION PROCEDURE

1

CONFIRM DTC

Trouble Area

Power steering ECU

DTCs other than C1531/31, C1532/32, C1533/33, C1534/34 and C1535/35 are not output.

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

REPLACE POWER STEERING ECU

DTC

C1541/41

Speed Sensor Malfunction

DTC

C1542/42

Speed Sensor Malfunction

DTC

C1571/71

Speed Sensor Malfunction (Test Mode DTC)

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