Symptom Related Diagnostic Procedures

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1. Check fuse 18
2. Switch off the ignition and disconnect the negative battery lead. Undo the bolts securing the steering wheel airbag. Unplug the connector on the rear of the airbag and connect reference resistor 84 71 153 to the connector.

On Cars With Passenger Airbag:
a. Remove the glove compartment and unplug the connector on the underside of the passenger airbag.
b. Plug in reference resistor 84 71 153 to the connector.

Proceed to point 3.

3. Unplug the SRS control module connector and check pin 5 for breaks and bad connections.

Refit the connector to the SRS control module. Refit the negative battery lead and switch on the ignition.
The SRS lamp should light for 3 to 4 seconds and then go out.
If the lamp goes out: The fault was in the connector. Return the car to good order.

NOTE: If no fault was detected in the connector, the fault may be intermittent. Try to provoke any intermittent fault and see if the SRS lamp lights.

If the lamp does not go out: Proceed to point 4.

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4. Switch off the ignition. Unplug the connector from the SRS control module and connect a BOB to the cable assembly. Switch on the ignition and connect a voltmeter between contact 5 on the BOB and a safe grounding point.
The voltmeter should show 7-16 V.
If the value is OK: Description of On-Board Diagnostics
If the value is incorrect: If there is no battery positive voltage, examine the cable assembly between fuse 18 and the SRS control module for breaks. If there is a fault, change the lead.