A Preliminary Information

IMPORTANT: The following steps must be completed before using the symptom tables.

1. Perform A Diagnostic System Check - Lighting Systems before using the Symptom Tables in order to verify that there are no DTCs set.
2. Review the system description in order to familiarize yourself with the system functions. Refer to Lighting System Description.

Visual/Physical Inspection
^ Inspect for aftermarket devices which could affect the operation of the Lighting System. Refer to Checking Aftermarket Accessories in Diagrams, Diagnostic Aids.
^ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent and Poor Connections in Diagrams, Diagnostic Aids, Troubleshooting Tools.

Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
^ Backup Lamps Always On
^ Backup Lamps Inoperative
^ Cornering Lamps Inoperative
^ Courtesy Lamps Always On
^ Courtesy Lamps Inoperative
^ Daytime Running Lamps (DRL) Headlamps Inoperative
^ Fog Lamps Always On
^ Fog Lamps Inoperative
^ Fog Lamp Indicator Inoperative
^ Hazard Lamps Inoperative
^ Headlamps Always On - Low or High Beam
^ Headlamps Inoperative - Flash to Pass
^ Headlamps inoperative - Low Beams (Standard) or Headlamps Inoperative - Low Beams (High Intensity Discharge (HID))
^ Headlamps Inoperative - High Beams
^ High Beam Indicator Inoperative
^ Illuminated Entry Lamps Inoperative
^ Incandescent Lamps Do Not Dim
^ IP Compartment Lamp Inoperative
^ License Lamps Inoperative
^ Marker Lamps Inoperative
^ Park Lamps Always On
^ Park Lamps Inoperative
^ Reading Lamp(s) Inoperative
^ Rear Compartment Lamp(s) Inoperative
^ Stop Lamps Inoperative
^ Turn Signal Indicators Inoperative
^ Turn Signal Lamps Inoperative
^ Twilight Sentinel Inoperative
^ Vanity Mirror Lamp(s) Inoperative