Test 55C - Repairing Headlamps Inoperative In Auto Mode
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION
. For wiring diagrams, see WIRING DIAGRAMS
. Perform TEST VER-1 after each repair.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting any module connector.
- Using DRB, actuate headlamp relay. If headlamps toggle on and off, replace Body Control Module (BCM). BCM is located behind right kick panel. If headlamps do not toggle on and off, go to next step. 2 Turn ignition switch to OFF position. Disconnect BCM Gray connector. Connect jumper wire between BCM Gray connector terminal No. 2 (Red/Dark Blue wire) and ground. If headlamps illuminate, replace BCM. If headlamps do not illuminate, go to next step.
- Disconnect jumper wire. Remove headlamp time delay relay from junction block. See Figure . Junction block is located behind end cover, on left side of instrument panel. Using DRB in voltmeter mode, check voltage on headlamp time delay relay connector terminal "A" (Red/White wire). If voltage is less than 10 volts, repair open Red/White wire. If voltage is more than 10 volts, go to next step.
- Using DRB in voltmeter mode, check voltage on headlamp time delay relay connector terminal "C" (Red/White wire). If voltage is less than 10 volts, repair open Red/White wire. If voltage is more than 10 volts, go to next step.
- Connect jumper wire between headlamp time delay relay connector terminals "A" (Red/White wire) and "B" (Light Green wire). If headlamps do not illuminate, repair open Light Green wire. If headlamps illuminate, go to next step.
- Disconnect jumper wire. Using an external ohmmeter, check resistance of Red/Dark Blue wire between headlamp delay relay connector terminal "E" and BCM Gray connector terminal No. 2. If resistance is more than 5 ohms, repair open Red/Dark Blue wire. If resistance is less than 5 ohms, replace headlamp delay relay.