Test C: Restraint Control Module (RCM) Does Not Respond To NGS Tester
- Turn ignition switch to LOCK position. Deactivate air bag system. See appropriate AIR BAG RESTRAINT SYSTEMS article. Disconnect RCM harness connector C310a, located under center console. Disconnect NGS tester (if connected). Inspect harness connector for loose, damaged or corroded terminals. If problem exists, repair harness connector as necessary and retest system for normal operation. If problem does not exist, go to next step.
- Measure resistance between terminal No. 7 (Gray wire) at RCM harness connector C310a and terminal No. 7 (Gray/Black wire) at Data Link Connector (DLC). See Figure
and Fig 1
. If resistance is greater than 5 ohms, go to next step. If resistance is 5 ohms or less, perform TEST M: NO MODULE/NETWORK COMMUNICATION - ISO 9141 LINK
.
- Disconnect in-line harness connector C212, located behind left side of instrument panel. See Figure
. Inspect harness connector for loose, damaged or corroded terminals. If problem does not exist, go to next step. If problem exists, repair harness connector as necessary and retest system for normal operation.
- Measure resistance in Gray/Black wire between terminal No. 8 at male side of in-line harness connector C212 and terminal No. 7 at DLC. See Figure
and Fig 2
. If resistance is 5 ohms or less, repair open in wiring between in-line harness connector C212 and RCM. Retest system for normal operation. If resistance is greater than 5 ohms, repair open in Gray/Black wire between DLC and in-line harness connector C212. Retest system for normal operation.
Courtesy of FORD MOTOR CO.
Courtesy of FORD MOTOR CO.