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DTC B2866-B2867-B2868-B2869

WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ensure ignition is off. Disconnect 29-pin seat harness connector located under right front seat. Inspect both halves of connector for open circuit or pin slide-out. Repair as necessary. Install Reference Resistor (86 12 335) on air bag control module side of 29-pin seat harness connector. Disconnect air bag control module harness connector. Check air bag control module harness connector terminals No. 13 (Yellow-Brown wire) and No. 14 (Yellow-Red wire) for open circuit or pin slide-out. Repair as necessary. See Figure. Install air bag control module harness connector to Breakout Box (BOB). For diagnostic trouble codes B2868 or B28694, go to next step. For diagnostic trouble codes B2866 or B2867, go to step  3.
  2. Measure resistance between BOB test pins No. 13 and 14. If resistance is 2-4 ohms, replace passenger-side seat air bag. Go to step  5. If resistance is not 2-4 ohms, repair or replace Yellow-Brown wire or Yellow-Red wire between air bag control module harness connector and 29-pin seat harness connector. Go to step  5.
  3. Measure resistance between ground and BOB test pin No. 13. If resistance is infinite, go to next step. If resistance is not infinite, repair or replace Yellow-Brown wire between air bag control module harness connector and 29-pin seat harness connector. See WIRING DIAGRAMS . Go to step  5.
  4. Measure resistance between ground and BOB test pin No. 14. If resistance is infinite, replace passenger-side seat air bag. Go to next step. If resistance is not infinite, repair or replace Yellow-Red wire between air bag control module harness connector and 29-pin seat harness connector. Go to next step.
  5. Reassemble vehicle. Clear diagnostic codes in all systems. Road test vehicle at various speeds and loads. Verify that no diagnostic trouble codes are present. If no diagnostic trouble codes are present, repairs are complete. If diagnostic trouble codes are present, go to BEFORE REPLACING AIR BAG CONTROL MODULE  under DIAGNOSTICS.
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