DTC 07/DTC 08 - Front Sensor Short to Battery Positive

Unscrew the steering wheel center pad (airbag module) and unplug the connector at the rear. Plug reference resistor 84 71 153 into the connector.

MALFUNCTION
DTC O7L: Front sensor 1 (left-hand), shorting to battery positive
DTC O8L: Front sensor 2 (right-hand), shorting to battery positive

DIAGNOSTIC PROCEDURE
All readings are taken with:
^ the engine running
^ all 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. Unplug connector 58.
2. Use an ohmmeter to check the resistance of the lead between connector 58 and the front sensor.
3. For front sensor 1 (left-hand), take a reading:
- across pin 1 and battery positive
- across pin 2 and battery positive
4. 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 5,100 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 5.
If all readings are higher than 5,100 ohms - proceed to point 11.
5. Unplug connector 57.
6. Use an ohmmeter to check the resistance of the lead between connector 58 and the front sensor.
7. For front sensor 1 (left-hand), take a reading:
- across pin 1 and battery positive
- across pin 2 and battery positive
8. 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 5,100 ohms or lower, the fault could be in the wiring between connectors 58 and 57.
9. Investigate the cause. Rectify the fault or change the wiring as necessary.
If all readings are higher than 5,100 ohms - proceed to point 10.
10. If the front sensor is of generation I type, check the lead between it and the connector. Check that the lead's insulation is intact and that no stray currents occur from any other live lead. If the lead is damaged, change the sensor. If the lead is OK - proceed to point 11.
11. The fault could be in the wiring between connector 58 and the control module.
Investigate the cause. Rectify the fault or change the wiring as necessary. Before changing the control module, Programming and Relearning