Test 49A - Inoperative Headlight Time Delay Relay Control
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION
. For appropriate wiring diagram, see WIRING DIAGRAMS
at end of article.
- Turn ignition on. Using DRB-II, actuate headlight time delay relay. If headlights do not toggle on and off, go to TEST 50A . If headlights toggle on and off, go to next step.
- Using DRB-II, stop headlight time delay relay actuation test. Turn headlight switch on. If headlights do not come on, repair open headlight switch output circuit (Light Green wire). Perform VERIFICATION PROCEDURE VER-1.
- If headlights come on, use DRB-II to read headlight switch status while turning headlight switch off then back on. If DRB-II reading corresponds with headlight switch position HEADLAMPS: OFF (switch off) then HEADLAMPS: ON (switch on), replace Body Controller Module (BCM). Module is located behind right kick panel. Perform VERIFICATION PROCEDURE VER-1.
- If DRB-II reading does not correspond to headlight switch position, access fuse No. 5 on fuse/junction block. Fuse/junction block is located behind end cover, on left side of instrument panel. With DRB-II in volt-meter mode, check voltage on headlight switch output circuit (Light Green wire) on fuse/junction block connector of fuse No. 5. If voltage is less than 10 volts, repair open circuit in Light Green wire between headlight switch and fuse. Perform VERIFICATION PROCEDURE VER-1.
- If voltage is more than 10 volts, turn headlight switch off. Inspect fuse No. 5. If fuse No. 5 is blown, go to TEST 49B. If fuse No. 5 is okay, turn ignition off. Disconnect BCM and turn headlight switch on. With DRB-II in voltmeter mode, check voltage on BCM Bone connector terminal No. 3, headlight switch fused output circuit (Red/Light Green wire). If voltage is less than 10 volts, repair open circuit in Red/Light Green wire between fuse No. 5 and BCM. Perform VERIFICATION PROCEDURE VER-1. If voltage is more than 10 volts, replace BCM. Perform VERIFICATION PROCEDURE VER-1.