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Headlights Fail To Flash With Alarm Tripped

WARNING: This page is about a different car, the 2002 Dodge Ram Wagon, 2002 Dodge Ram Van, 2001 Dodge Ram Wagon, and 2001 Dodge Ram Van. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Perform BODY VERIFICATION TEST  under VERIFICATION TESTS after each repair

Possible Causes:

  1. Are The Headlamps Operational
  2. PDC Fuse No. 15 Open
  3. Headlamp Relay Open
  4. Low Bean Relay Output Circuit Open
  5. Repair The Fused B+ Circuit For An Open
  6. Headlamp Relay Control Circuit Open
  7. CTM Headlamps Inoperative With Alarm

Testing

  1. Turn low beam headlights on. If low beam headlights do not operate properly, repair headlight circuit as necessary. See HEADLIGHTS in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. If low beam headlights operate properly, go to next step.
  2. Remove and inspect fuse No. 19 (20-amp) from fuse block. Fuses are identified on fuse block cover. If fuse is okay, go to next step. If fuse is open, use wiring diagrams as a guide to inspect wiring and components related to this circuit for possible cause of open fuse. See POWER DISTRIBUTION in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
  3. Substitute a known-good headlight relay. Headlight relay is located in fuse/relay block. Relays are identified on fuse/relay block cover. Trip alarm. If headlights do not flash with alarm tripped, go to next step. If headlights flash with alarm tripped, replace original headlight relay.
  4. Turn ignition off. Disconnect CTM connector C2. Remove headlight relay. Using a DVOM, measure resistance of Red wire between CTM connector C2 terminal No. 6 and headlight relay connector. See Figure . If resistance is less than 5 ohms, go to next step. If resistance is more than 5 ohms, repair open in headlight relay control circuit.
  5. Place ignition switch in LOCK position. Remove fuse No. 15 (30-amp) from Power Distribution Center (PDC). Fuses are identified on PDC cover. Using a DVOM, measure resistance of Red/White wire between fuse No. 15 connector and headlight relay connector terminals A1 and A5. If resistance is less than 5 ohms, go to next step. If resistance is more than 5 ohms, repair open in Red/White wire.
  6. Measure resistance of Red wire between relay connector terminal A2 and CTM connector C2 terminal No. 6. If resistance is more than 5 ohms, repair open in Red wire. If resistance is less than 5 ohms, replace CTM.
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