DTC 11/DTC 12 - Front Sensor Open Circuit

MALFUNCTION
DTC 11 L: Front sensor 1 (left-hand), open circuit in wiring.
DTC 12 L: Front sensor 2 (right-hand), open circuit in wiring.

DIAGNOSTIC PROCEDURE
1. Unscrew the steering wheel center pad (airbag module) and unplug the connector at the rear. Plug reference resistor 84 71153 into the connector.
2. Check connectors 58 and 57 for poor contact. Clear the code and wait at least 40 seconds with the ignition switched ON. Check whether the trouble code persists.
If the trouble code has been cleared, the fault could have been in either connector 57 or 58.
If the trouble code persists - proceed to step 3.
3. Unplug connector 58.
4. Use an ohmmeter to check the resistance of the lead between the connector and the front sensor.
5. For front sensor 1 (left-hand), take a reading:
- across pins 1 and 2
6. For front sensor 2 (right-hand), take a reading:
- across pins 11 and 12
If the resistance is 23 ohms or higher - proceed to step 7.
If the resistance is lower than 23 ohms - proceed to step 11..
7. Unplug connector 57.
8. Use an ohmmeter to check the resistance of the lead between the connector and the front sensor.
9. For front sensor 1 (left-hand), take a reading:
- across pins 1 and 3
10. For front sensor 2 (right-hand), take a reading:
- across pins 1 and 3
If the resistance is 2.4 ohms or higher, the fault is in the front sensor. Change the sensor.
If the resistance is lower than 2.4 ohms the fault could be in the wiring between connectors 58 and 57.
Investigate the cause. Rectify the fault or change the wiring as necessary.
11. 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