A Symptoms - Lighting Systems

SYMPTOMS - LIGHTING SYSTEMS

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

- Perform the Diagnostic System Check - Lighting Systems before using the Symptom Tables in order to verify that all of the following are true:
- There are no DTCs set.
- The control modules can communicate via the serial data link.
- Review the system description and operation in order to familiarize yourself with the system functions. Refer to Interior Lighting Systems Description and Operation and Exterior Lighting Systems Description and Operation. Diagnostic System Check - Lighting Systems

Visual/Physical Inspection
- Inspect for aftermarket devices which could affect the operation of the lighting system.
- 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.

Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
- Automatic Lamp Control Inoperative
- Backup Lamps Always On
- Backup Lamps Inoperative
- Courtesy Lamps Always On
- Courtesy Lamps Inoperative
- Daytime Running Lamps (DRL) Always On
- Daytime Running Lamps (DRL) Inoperative
- Fog Lamp Indicator Always On - Rear
- Fog Lamp Indicator Inoperative - Rear
- Fog Lamps Always On
- Fog Lamps Always On - Rear
- Fog Lamps Inoperative
- Fog Lamps Inoperative - Rear
- Hazard Lamps Always On
- Hazard Lamps Inoperative
- Headlamps Always On - Low or High Beam
- Headlamps Inoperative - Low Beams
- Headlamps Inoperative - High Beams
- Headlamps Inoperative - Flash to Pass
- Headlamps Suggested Message On in Daylight Conditions
- Headlamps Suggested Message On in Low Light Conditions - Headlamps On
- High Beam Indicator Always On
- High Beam Indicator Inoperative
- Ignition Lock Cylinder Lamp Always On
- Ignition Lock Cylinder Lamp Inoperative
- Illuminated Entry Lamps Always On
- Illuminated Entry Lamps Inoperative
- Interior Backlighting Does Not Dim
- Interior Backlighting Inoperative
- Instrument Panel (I/P) Compartment Lamp Inoperative
- Instrument Panel (I/P) Compartment Lamp Always On
- License Lamps Inoperative
- Park Lamps Always On
- Park Lamps Inoperative
- Reading Lamp(s) Always On
- Reading Lamp(s) Inoperative
- Rear Compartment Lamp(s) Always On
- Rear Compartment Lamp(s) Inoperative
- Stop Lamps Always On
- Stop Lamps Inoperative
- Turn Signal Lamps and/or Indicators Always On or Flashing
- Turn Signal Lamps and/or Indicators Inoperative
- Vanity Mirror Lamp(s) Always On
- Vanity Mirror Lamp(s) Inoperative