Test D: Restraint Control Module (RCM) Does Not Respond To NGS Tester
NOTE:
After making any repair, perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM.
- Turn ignition switch to LOCK position. Deactivate air bag system. See appropriate AIR BAG RESTRAINT SYSTEMS article. Disconnect Restraint Control Module (RCM) 26-pin connector. See Fig 1. Inspect RCM connector for loose, damaged or corroded terminals. Repair as necessary. If connector is okay, go to next step.
- Measure resistance of Light Blue/White wire between RCM connector terminal No. 5 and DLC terminal No. 7. See Figure and Fig 1 . If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Light Blue/White wire between RCM connector and DLC.
- Connect RCM connector. Perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM. If RCM responds to NGS tester, system is functioning properly. If RCM does not respond to NGS tester, replace RCM. See RESTRAINT CONTROL MODULE (RCM) under REMOVAL & INSTALLATION in AIR BAG RESTRAINT SYSTEMS - EXPEDITION, EXPLORER, MOUNTAINEER & NAVIGATOR article.