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Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
  1. If SIR Diagnostic System Check has been performed, go to next step. If SIR Diagnostic System Check has not been performed, go to SIR DIAGNOSTIC SYSTEM CHECK .
  2. Turn ignition off. If air bags have not deployed, go to next step. If air bags have deployed, go to step  5.
  3. Inspect front of vehicle and undercarriage for signs of impact. If no impact has occurred, go to next step. If impact has occurred, go to step  5.
  4. Replace SDM. See SENSING & DIAGNOSTIC MODULE (SDM)  under REMOVAL & INSTALLATION. Go to step  6.
  5. Using scan tool, request SIR DTC display. If history DTC's exist, go to Diagnostic aids for specific displayed DTC. Replace components and perform inspections as required following an accident. See POST-COLLISION INSPECTION . Go to next step.
  6. Reconnect all SIR components. Using scan tool, clear all DTC's. Road test vehicle, then check for SIR DTC's. If DTC B0053 is retrieved, go to step  2. If DTC B0053 is not retrieved, system is normal. Go to SIR DIAGNOSTIC SYSTEM CHECK .
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