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Test 49A - Headlamp Time Delay Will Not Turn On

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.
  1. Turn ignition switch to ON position. Using DRB, actuate headlamp time delay relay. If headlamps do not toggle on and off, go to TEST 50A  . If headlamps toggle on and off, go to next step.
  2. Using DRB, stop headlamp time delay relay actuation. Turn headlamp switch on. If headlamps do not come on, repair open Light Green wire. If headlamps come on, go to next step.
  3. Using DRB, read headlamp switch status while turning headlamp switch off then back on. If DRB reading corresponds with headlamp switch position, HEADLAMPS OFF (switch off) then HEADLAMPS ON (switch on), replace Body Control Module (BCM). BCM is located behind right kick panel. If DRB reading does not correspond to headlamp switch position, go to next step.
  4. Remove fuse No. 5 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 fuse No. 5 connector (Light Green wire). If voltage is less than 10 volts, repair open Light Green wire. If voltage is more than 10 volts, go to next step.
  5. Turn headlamp switch off. Inspect fuse No. 5. If fuse is open, go to TEST 49B. If fuse is okay, Turn ignition switch to OFF position. Disconnect BCM connectors. Turn headlamp switch on. Go to next step.
  6. Using DRB in voltmeter mode, check voltage on BCM Bone connector terminal No. 3 (Red/Light Green wire). If voltage is less than 10 volts, repair open Red/Light Green wire between fuse No. 5 and BCM. If voltage is more than 10 volts, replace BCM.
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