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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 134 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> DTC B0102: Driver-Side EFS NOK Message >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. 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. Using scan tool, check for SIR DTC's. If DTC B0102 is retrieved as a current DTC, go to next step.
  3. Replace driver-side EFS. See ELECTRONIC FRONTAL SENSOR (EFS)  under REMOVAL & INSTALLATION. Go to next step.
  4. Reconnect all SIR components. Using scan tool, clear all SIR DTC's. Road test vehicle, then check for DTC's. If DTC B0102 is retrieved, go to step  2. If DTC B0102 is not retrieved, system is normal. Go to SIR DIAGNOSTIC SYSTEM CHECK .
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