Disabling the SIR System

WARNING: The diagnostic energy reserve module or sensing and diagnostic module (DERM/SDM) can maintain enough voltage to cause air bag deployment for up to two minutes after the ignition switch is turned off and the battery is disconnected. Servicing the SIR system during this period may result in accidental deployment and personal injury.


1. Ensure front wheels are pointed straight ahead.
2. Turn ignition switch to LOCK position and remove key.
3. Remove AIR BAG fuse (No. 21 on 1995-96 models) from instrument panel fuse block.
4. Remove trim panel from under steering column.
5. Disconnect Connector Position Assurance (CPA) and yellow 2-way connector at base of steering column.
6. Open glove compartment door and disconnect passenger side Connector Position Assurance (CPA) and yellow 2-way connector.
7. Wait at least 2 minutes before proceeding with diagnosis or service.