Test Aw: Right Back-Up Light Inoperative
WARNING: This page is about a different car, the 2001 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
- Connect New Generation Star (NGS) tester to Data Link Connector (DLC). DLC is located below left side of instrument panel, to right of steering column. Using NGS tester, retrieve DTCs from Rear Electronic Module (REM). If no DTCs exist, go to next step. If any DTCs exist, repair DTC related concern. See REAR ELECTRONIC MODULE DIAGNOSTIC TROUBLE CODE INDEX .
- Using NGS tester, trigger REM active command BACKUPLMP to ON and OFF while observing back-up lights. If back-up lights do no operate properly, go to next step. If back-up lights operate properly, replace REM. See REAR ELECTRONIC MODULE under REMOVAL & INSTALLATION.
- Turn ignition switch to LOCK position. Disconnect right back-up light harness connector C461. Turn ignition switch to RUN position. Measure voltage between ground and right back-up light harness connector C461 terminal No. 3 (Orange/Green wire). If battery voltage exists, go to next step. If battery voltage does not exist, repair open in Orange/Green wire between battery junction box and right back-up light.
- Turn ignition switch to LOCK position. Disconnect REM 17-pin harness connector C420e. REM is located on right side of luggage compartment, above battery. See Figure . Measure resistance of Black/Red wire between REM harness connector C420e terminal No. 10 and right back-up light harness connector C451 terminal No. 1. See Figure . If resistance is less than 5 ohms exists, replace REM. See REAR ELECTRONIC MODULE under REMOVAL & INSTALLATION. If 5 ohms or more exist, repair open or high resistance in Black/Red wire.