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Before Replacing Control Module

WARNING: This page is about a different car, the 2003 Saab 9-5. However, it is still accessible from the selected car via links, so may be relevant.
  1. When all other tests have been performed, and fault has not been determined, air bag system control module is suspect. Before replacing module, check once more that all diagnostic steps have been followed precisely. Try wiggling wiring and connectors while repeating test procedure.
  2. If you are unclear about circuit operation, see WIRING DIAGRAMS  Ensure all ground connections are clean and tight. If ground connections have already been checked, repeat ground check. Ensure voltage feeds and fuses to air bag system operate correctly.
  3. Check air bag system control module connector carefully. Ensure there are no damaged or broken pins and that outer shell is not cracked or damaged. If original fault was of an intermittent type, and involved driver-side air bag circuit, clockspring should be replaced first. Clockspring is most common component to fail in air bag system.
  4. If original fault was an intermittent type not involving driver-side air bag circuit, or clockspring has already been replaced in previous procedure, air bag system wiring harness should be replaced next. Wiring faults are more common than control module failures. If original fault is still present, replace air bag control module. See AIR BAG CONTROL MODULE  under REMOVAL & INSTALLATION.
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