Diagnostic Procedure
- Ensure ignition is off. If driver or passenger-side air bag module has not deployed, go to next step. If driver or passenger-side air bag module has deployed, perform POST-COLLISION INSPECTION .
- Inspect front of vehicle and undercarriage for signs of impact. If any sign of impact is present, perform POST-COLLISION INSPECTION . If no signs of impact is present, substitute a known-good SDM and retest. See SENSING & DIAGNOSTIC MODULE (SDM) under REMOVAL & INSTALLATION. Go to next step. Reconnect all components. Clear DTCs. See DIAGNOSTICS . Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK .