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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 138 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> DTC B1001: Option Configuration Error >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Chevrolet Malibu. 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. If BCM or SDM were not replaced, go to next step. If BCM or SDM were replaced, go to step  6.
  3. Connect scan tool to Data Link Connector (DLC), located under left side of instrument panel. Using scan tool, verify PCM is programmed with correct VIN by comparing to VIN plate on vehicle. If VIN's match, go to step  5. If VIN's DO NOT match, go to next step.
  4. Using scan tool, reprogram PCM with correct VIN. Go to step  8.
  5. Using scan tool, verify BCM is programmed with correct VIN by comparing to VIN stored in PCM. If VIN's match, go to step  7. If VIN's DO NOT match, go to next step.
  6. Using scan tool, reprogram BCM following prompts on scan tool. When reprogramming is complete, go to step  8.
  7. Turn ignition off. Replace SDM. See SENSING & DIAGNOSTIC MODULE (SDM)  under REMOVAL & INSTALLATION. Go to next step.
  8. Reconnect all SIR components. Using scan tool, clear all DTC's. Road test vehicle, then check for SIR DTC's. If DTC B1001 is retrieved by scan tool, go to step  2. If DTC B1001 is not retrieved by scan tool, system is okay. Go to SIR DIAGNOSTIC SYSTEM CHECK .
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