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Home >> Ford >> 2002 >> Crown Victoria Base, 4.6 9 >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Exterior Lighting System >> Diagnosis And Testing >> Turn Signal, Cornering and Hazard Lamps >> Symptom Chart >> Symptom Chart

Symptom Chart

SYMPTOM CHART

Condition Possible Sources Action
  • No communication with the lighting control module (LCM)
  • Central junction box (CJB) fuses:
    • 21 (15A).
    • 23 (15A).
  • Circuitry.
  • J1850 communication network.
  • LCM.
  • No communication with the LCM - unable to enter self-test
  • CJB fuses:
    • 6 (15A).
    • 15 (15A).
  • Circuitry.
  • LCM.
  • The turn signal lamps are never on - the hazard lamps are never on
  • CJB fuse(s):
    • 16 (15A) (turn signal lamps).
    • 22 (15A) (hazard flasher lamps).
  • Bulbs.
  • Circuitry.
  • Multifunction switch.
  • LCM.
  • The turn signal lamps are never on - the hazard lamps operate correctly
  • CJB fuse 16 (15A).
  • Circuitry.
  • Multifunction switch.
  • The hazard lamps are inoperative - the turn signal lamps operate correctly
  • CJB fuse 22 (15A).
  • Circuitry.
  • Multifunction switch.
  • The turn signal flashes rapidly
  • Circuitry.
  • Bulb.
  • Lighting control module (LCM).
  • If any turn signal lamp is inoperative, Go To PINPOINT TEST Q .
  • If no turn signal lamp is operative, INSTALL a new lighting control module (LCM). TEST the system for normal operation.
  • One turn signal/hazard lamp is never on
  • Bulb.
  • Circuitry.
  • Multifunction switch.
  • The cornering lamps is never/always on
  • Bulb(s).
  • Circuitry.
  • Multifunction switch.
  • The cornering lamp is never on - an individual cornering lamp is inoperative
  • Bulb(s).
  • Circuitry.
  • Multifunction switch.
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