Test C: Air Bag Control Module Does Not Respond To NGS Tester
NOTE:
Air bag control module may also be referred to as electronic crash sensor module.
- Using scan tool, check for response from instrument cluster. If instrument cluster result is also NO MODULES/NOT EQUIPPED, go to next step. If instrument cluster responds, go to step 3 .
- Turn ignition switch to LOCK position. Disconnect NGS tester (if connected). Disconnect 14-pin in-line harness connector C62, located behind instrument cluster. Inspect connector for loose, damaged or corroded terminals. If connector is damaged, repair connector as necessary. Check resistance between and male side of in-line harness connector C62 terminal No. 6 (White wire) and Data Link Connector (DLC) terminal No. 7 (White wire without ABS; White/Blue wire with ABS). See Figure and Fig 1 . If resistance is more than 5 ohms, repair open in White wire and/or White/Blue wire between DLC and in-line harness connector C62. If resistance is 5 ohms or less, repair connector terminals and recheck system.
- Check vehicle equipment. If vehicle is equipped with anti-theft/double locking module, go to next step. If vehicle is not equipped with anti-theft/double locking module, go to step 6 .
- Using scan tool, check for response from anti-theft/double locking module. If anti-theft/double locking module result is also NO MODULES/NOT EQUIPPED, go to next step. If anti-theft/double locking module responds, go to step 7 .
- Turn ignition switch to LOCK position. Disconnect NGS tester (if connected). Disconnect 14-pin in-line harness connector C62, located behind instrument cluster. Disconnect 16-pin in-line harness connector C58, located in passenger's side kick panel. Inspect connectors for loose, damaged or corroded terminals. If connector is damaged, repair connector as necessary. Check resistance of White wire between female side of in-line harness connector C62 terminal No. 6 and female side of connector C58 terminal No. 9. See Fig 2 . If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open in White wire between in-line harness connectors C62 and C58.
- Disarm air bag system. See appropriate AIR BAG RESTRAINT SYSTEMS article. Disconnect air bag control module harness connector C20. Inspect connector for loose, damaged or corroded terminals. If connector is damaged, repair connector as necessary. Check resistance of White/Red wire between air bag control module harness connector C20 terminal No. 24 and female side of in-line harness connector C62 terminal No. 6. See Fig 1 and Fig 3 . If resistance is more than 5 ohms, repair open in White/Red wire between in-line harness connector C62 and air bag control module. If resistance is 5 ohms or less, replace air bag control module if air bag control module power and ground circuits are okay.
- Disarm air bag system. See appropriate AIR BAG RESTRAINT SYSTEMS article. Disconnect air bag control module harness connector C20. Inspect connector for loose, damaged or corroded terminals. If connector is damaged, repair connector as necessary. Check resistance of White/Red wire between air bag control module harness connector C20 terminal No. 24 and female side of in-line harness connector C58 terminal No. 9. If resistance is more than 5 ohms, repair open in White/Red wire between in-line harness connector C58 and air bag control module. If resistance is 5 ohms or less, replace air bag control module if air bag control module power and ground circuits are okay.