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Home >> GMC >> 1999 >> Forward Control 6.5 F, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> DTC B0041: Driver Side Deployment Loop Open >> Diagnostic Procedure
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Diagnostic Procedure

WARNING: This page is about a different car, the 2000 Buick Park Avenue. 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. Disconnect driver side impact air bag Yellow 2-pin connector located under driver seat. See Figure. If harness connector terminals are damaged or corroded, go to next step. If terminals are okay, go to step  4.
  3. Replace damaged wire harness. Go to step  14.
  4. Reconnect driver side impact air bag Yellow 2-pin connector. Ensure CPA clip is installed correctly. Turn ignition on. Using scan tool, check for SIR DTCs. If DTC B0041 is retrieved, go to next step. If DTC B0041 is not retrieved, go to DIAGNOSTIC AIDS.
  5. Turn ignition off. Disconnect driver side impact air bag Yellow 2-pin connector located under driver seat. See Figure. Install SIR Driver/Passenger Load Tool (J-38715-A) to harness connector. Turn ignition on. Using scan tool, check for SIR DTCs. If DTC B0041 is retrieved, go to step  7. If DTC B0041 is not retrieved, go to next step.
  6. Turn ignition off. Replace driver side impact air bag. See AIR BAG MODULES  under REMOVAL & INSTALLATION. Go to step  14.
  7. Turn ignition off. Remove SIR Driver/Passenger Load Tool (J-38715-A) from harness connector. Disconnect SDM harness connector. Check terminals No. B1 and B2 for proper connections. If terminals are okay, go to step  9. If terminals are damaged, go to next step.
  8. Repair or replace SDM harness connector. Go to step  14.
  9. Using Digital Multimeter (J-39200), measure resistance between SDM harness connector terminal No. B1 and harness connector terminal "B". See Figure & Figure . If resistance is greater than 0.5 ohms, go to next step. If resistance is equal to or less than 0.5 ohms, go to step  11.
  10. Repair open or high resistance condition in circuit 2105. Go to step  14.
  11. Using Digital Multimeter (J-39200), measure resistance between SDM harness connector terminal No. B2 and harness connector terminal "A". See Figure & Figure . If resistance is greater than 0.5 ohms, go to next step. If resistance is equal to or less than 0.5 ohms, go to step  13.
  12. Repair open or high resistance condition in circuit 2106. Go to step  14.
  13. Replace SDM. See SENSING & DIAGNOSTIC MODULE (SDM)  under REMOVAL & INSTALLATION. Go to next step.
  14. Reconnect all SIR components. Ensure that all components are properly mounted. Clear all SIR DTCs. Go to SIR DIAGNOSTIC SYSTEM CHECK .
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