Test R: No Communication With ECS Module
- Check connections for damage
Turn ignition switch to OFF position. Disable air bag system. See DISABLING SYSTEM
under DISABLING & ACTIVATING AIR BAG SYSTEM. Access Electronic Crash Sensor (ECS) module and disconnect harness connector. See ELECTRONIC CRASH SENSOR (ECS) MODULE
under REMOVAL & INSTALLATION. Inspect ECS module terminals and module harness connector terminal No. 19 for damage. See Figure
. If module terminals and module harness connector terminal No. 19 are okay, go to next step. If module terminals and module harness connector terminal No. 19 are damaged, repair/replace as necessary. Retest communication to RCM. Reconnect and activate air bag system. See ACTIVATING SYSTEM
under DISABLING & ACTIVATING AIR BAG SYSTEM.
- Check DLC for damage
Inspect Data Link Connector (DLC) and DLC connector terminal No. 7 (Orange/Blue wire) for damage. See Fig 1
. DLC is located under left side of instrument panel. If DLC connector and DLC connector terminal No. 7 (Orange/Blue wire) are okay, go to next step. If DLC connector and DLC connector terminal No. 7 (Orange/Blue wire) are damaged, repair/replace as necessary. Retest communication to RCM. Reconnect and activate air bag system.
- Check circuit No. 529 for open
Measure resistance of Orange/Blue wire between DLC connector terminal No. 7 and ECS module harness connector terminal No. 19. If resistance is less than 5 ohms, replace ECS module. Retest communication to RCM. Reconnect and activate air bag system. If resistance is more than 5 ohms, repair open in Orange/Light Blue wire. See WIRING DIAGRAMS
. Retest communication to RCM. Reconnect and activate air bag system.
Courtesy of FORD MOTOR CO.