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Home >> Mercury >> 2003 >> Marauder >> Repair and Diagnosis >> External Pages >> Different car >> Section 247 (Exterior Lighting System) >> Diagnosis And Testing >> AUTOLAMPS >> Symptom Chart

Symptom Chart

WARNING: This page is about a different car, the 2003 Mercury Mountaineer and 2003 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM CHART

Condition Possible Sources Action
No communication with the vehicle security module
  • Circuitry.
  • Vehicle security module.
 REFER to MODULE COMMUNICATIONS NETWORK .
The autolamps are inoperative
  • Circuitry.
  • Headlamp switch.
  • Photocell sensor.
  • Vehicle security module.
 Go To PINPOINT TEST G  .
The headlamps are inoperative with autolamps on
  • Circuitry.
  • Vehicle security module.
 Go To PINPOINT TEST G  .
The parking lamps are inoperative with autolamps on
  • Circuitry.
  • Vehicle security module.
 Go To PINPOINT TEST P  .
The autolamps are on continuously
  • Headlamp switch.
  • Photocell sensor.
  • Vehicle security module.
  • Circuitry.
 Go To PINPOINT TEST H  .
The autolamp time delay is inoperative
  • Vehicle security module.
 INSTALL a new vehicle security module. REFER to MODULE COMMUNICATIONS NETWORK .
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