Diagnostic Procedure
WARNING: This page is about a different car, the 2000 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
- 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 .
- Turn ignition off. Disconnect driver-side air bag 2-pin connector. If harness connector shows signs of corrosion, damaged terminals or poor connections, go to next step. If harness connector is okay, go to step 4 .
- If female side of harness connector is damaged, wiring harness must be replaced. If male side of harness connector is damaged, replace connector. See WIRE REPAIR . Go to step 12 .
- Reconnect driver-side air bag 2-pin connector. Ensure CPA clip is installed correctly. Turn ignition on. Using scan tool, check for SIR DTCs. If DTC B0022 is retrieved, go to next step. If DTC B0022 is not retrieved, see DIAGNOSTIC AIDS.
- Turn ignition off. Disconnect driver-side air bag 2-pin connector and 4-pin inline connector. Install SIR Driver-Passenger Load Tool (J-38715-A) to male side of harness connectors. Turn ignition on. Using scan tool, check for SIR DTCs. If DTC B0022 is retrieved, go to step 9 . If DTC B0022 is not retrieved, go to next step.
- Turn ignition off. Disconnect driver-side air bag module. See AIR BAG MODULES under REMOVAL & INSTALLATION. Remove SIR Driver-Passenger Load Tool (J-38715-A) from driver-side air bag 2-pin connector. Reconnect 2-pin connector. Connect SIR Driver-Passenger Load Tool (J-38715-A) to upper SIR coil-to-air bag module connector. Turn ignition on. Using scan tool, check for SIR DTCs. If DTC B0022 is retrieved, go to step 8 . If DTC B0022 is not retrieved, go to next step.
- Turn ignition off. Replace driver-side air bag module. See AIR BAG MODULES under REMOVAL & INSTALLATION. Go to step 12 .
- Turn ignition off. Replace SIR coil. See SIR COIL ASSEMBLY under REMOVAL & INSTALLATION. Go to step 12 .
- Turn ignition off. Disconnect SIR Driver-Passenger Load Tool (J-38715-A). Disconnect SDM connector. Using Digital Multimeter (J-39200), measure resistance between SDM harness connector terminals No. A6 and A7. See Figure . If resistance is not infinite, go to next step. If resistance is infinite, go to step 11 .
- Repair short between circuits 347 and 348 between 2-pin inline connector and SDM. Go to step 12 .
- Replace SDM. See SENSING & DIAGNOSTIC MODULE (SDM) under REMOVAL & INSTALLATION.Go to next step.
- Reconnect all SIR components. Ensure that all components are properly mounted. Clear all SIR DTCs. Go to SIR DIAGNOSTIC SYSTEM CHECK .