Test L: Vehicle Dynamics Module (VDM) Does Not Respond To NGS Tester
WARNING: This page is about a different car, the 2001 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition switch to OFF position. Disconnect Vehicle Dynamics Module (VDM) 60-pin harness connector C408 located in trunk. See Figure . Inspect harness connector for loose, damaged or corroded terminals. Repair harness connector as necessary and retest system for normal operation. If harness connector is okay, reconnect harness connector. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Turn ignition switch to ON position. Perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM. If NGS tester indicates VDM: NO RESPONSE ON CKT 914 (BUS +), go to next step. If NGS tester indicates VDM: NO RESPONSE ON CKT 914 (BUS -), go to step 5 .
- Turn ignition switch to OFF position. Disconnect NGS tester. Disconnect VDM harness connector C408. Measure resistance of Tan/Orange wire between terminal No. 19 at VDM harness connector C408 and terminal No. 2 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, replace VDM.
- Disconnect 84-pin harness connector C217 located behind left side of instrument panel. See Figure . Inspect harness connector for loose, damaged or corroded terminals. Repair harness connector as necessary and retest system for normal operation. If harness connector is okay, measure resistance of Tan/Orange wire between terminal No. 55 at harness connector C217 and terminal No. 2 at DLC. See Figure and Figure . If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in Tan/Orange wire between harness connector C217 and DLC.
- Disconnect 16-pin harness connector C409 located in center front of trunk. Inspect harness connector for loose, damaged or corroded terminals. Repair harness connector as necessary and retest system for normal operation. If harness connector is okay, measure resistance of Tan/Orange wire between terminal No. 19 at VDM harness connector C408 and terminal No. 8 at harness connector C409. See Figure and Fig 1 . If resistance is 5 ohms or less, repair open in Tan/Orange wire between harness connector C217 and harness connector C409. If resistance is greater than 5 ohms, repair open in Tan/Orange wire between harness connector C409 and VDM.
- Turn ignition switch to OFF position. Disconnect VDM harness connector C408. Disconnect NGS tester. Measure resistance of Pink/Light Blue wire between terminal No. 18 at VDM harness connector C408 and terminal No. 10 at DLC. See Figure and Fig 1 . If resistance is greater than 5 ohms, go to next step. If resistance is 5 ohms or less, replace VDM.
- Disconnect 84-pin harness connector C217 located behind left side of instrument panel. See Figure . Inspect harness connector for loose, damaged or corroded terminals. Repair harness connector as necessary and retest system for normal operation. If harness connector is okay, measure resistance of Pink/Light Blue wire between terminal No. 79 at harness connector C217 and terminal No. 10 at DLC. See Figure and Figure . If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in Pink/Light Blue wire between harness connector C217 and DLC.
- Disconnect 16-pin harness connector C409 located in center front of trunk. Inspect harness connector for loose, damaged or corroded terminals. Repair harness connector as necessary and retest system for normal operation. If harness connector is okay, measure resistance of Pink/Light Blue wire between terminal No. 18 at VDM harness connector C408 and terminal No. 16 at female half of harness connector C409. See Figure and Fig 1 . If resistance is 5 ohms or less, repair open in Pink/Light Blue wire between harness connector C217 and harness connector C409. If resistance is greater than 5 ohms, repair open in Pink/Light Blue wire between harness connector C409 and VDM.