DTC 0B/DTC 0C - Front Sensor Short to Battery Positive

MALFUNCTION
DTC ObL: Front sensor 1 (left-hand), shorting to battery positive
DTC OCL: Front sensor 2 (right-hand), shorting to battery positive

DIAGNOSTIC PROCEDURE
All measurements should be performed with:
- Engine running
- Current-consuming devices (lighting, electric motors, etc.) should be switched ON one by one.

CAUTION: To prevent damaging the ohmmeter when resistance measurement to battery positive is carried out, do not ground it.

1. Unscrew the steering wheel center pad (airbag module) and unplug the connector at the rear. Plug reference resistor 84 71 153 into the connector.
2. Unplug connector 58.
3. Use an ohmmeter to check the resistance of the lead between connector 58 and the front sensor.
For front sensor 1 (left-hand), take a reading:
- across pin 1 and battery positive
- across pin 2 and battery positive
For front sensor 2 (right-hand), take a reading:
- across pin 11 and battery positive
- across pin 12 and battery positive.
If any reading is 470 ohms or lower, the fault could be in the wiring between connectors 58 and 57 or in the wiring between connector 57 and the front sensor - proceed to point 4.
If all readings are higher than 470 ohm - proceed to point 7.
4. Unplug connector 57.
5. Use an ohmmeter to check the resistance of the lead between connector 58 and the front sensor.
For front sensor 1 (left-hand), take a reading:
- across pin 1 and battery positive
- across pin 2 and battery positive
For front sensor 2 (right-hand), take a reading:
- across pin 11 and battery positive
- across pin 12 and battery positive
If any reading is 1,000 ohms or lower, the fault is in the wiring between connectors 58 and 57.
Investigate the cause. Rectify the fault or change the wiring as necessary.
If all readings are higher than 1,000 ohms - proceed to point 6.
6. If the front sensor is of generation. 1 type, check the lead between it and the connector. Check that the lead's insulation is intact and that no shorting occurs from any other live lead. If the lead is damaged, change the sensor. If the lead is OK - proceed to point 7.
7. The fault could be in the wiring between connector 58 and the control module.
Investigate the cause. Rectify the fault or change the control module as necessary.Before changing the control module, Programming and Relearning