- Symptoms - Lighting

SYMPTOMS - LIGHTING SYSTEMS

IMPORTANT: The following steps must be completed before doing the Symptom tables.

1. Perform the Diagnostic System Check - Vehicle.
- No DTCs are set.
- The control modules can communicate via the serial data link. Testing and Inspection

2. Review the system operation in order to familiarize yourself with the system functions. Refer to Exterior Lighting Systems Description and Operation or Interior Lighting Systems Description and Operation.

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:
- Backup Lamps Always On Backup Lamps Always On
- Backup Lamps Inoperative Backup Lamps Inoperative
- Courtesy Lamps Always On Courtesy Lamps Always On
- Courtesy Lamps Inoperative Courtesy Lamps Inoperative
- Daytime Running Lamps (DRL) Inoperative Daytime Running Lamps (DRL) Inoperative
- Fog Lamps Always On Fog Lamps Always On
- Fog Lamps Inoperative Fog Lamps Inoperative
- Hazard Lamps Always On Hazard Lamps Always On
- Hazard Lamps Inoperative Hazard Lamps Inoperative
- Headlamps Always On - Low or High Beam Headlamps Always On - Low or High Beam
- Headlamps Inoperative - High Beams Headlamps Inoperative - High Beams
- Headlamps Inoperative - Low Beams Headlamps Inoperative - Low Beams
- Headlamps Inoperative - Flash to Pass Headlamps Inoperative - Flash to Pass
- Illuminated Entry Lamps Inoperative High Beam Indicator Always On
- Interior Backlighting Does Not Dim Interior Backlighting Does Not Dim
- Interior Backlighting Inoperative Interior Backlighting Inoperative
- Instrument Panel (I/P) Compartment Lamp Inoperative Instrument Panel (I/P) Compartment Lamp Inoperative
- Instrument Panel (I/P) Compartment Lamp Always On Instrument Panel (I/P) Compartment Lamp Always On
- Park, License, and Tail Lamps Always On Park, License, and Tail Lamps Always On
- Park, License, and Tail Lamps Inoperative Park, License, and Tail Lamps Inoperative
- Reading Lamp(s) Always On Reading Lamp(s) Always On
- Reading Lamp(s) Inoperative Reading Lamp(s) Inoperative
- Rear Compartment Lamp(s) Always On Rear Compartment Lamp(s) Always On
- Rear Compartment Lamp(s) Inoperative Rear Compartment Lamp(S) Inoperative
- Stop Lamps Always On Stop Lamps Always On
- Stop Lamps Inoperative Stop Lamps Inoperative
- Turn Signal Lamps and/or Indicators Always On or Flashing Turn Signal Lamps and/or Indicators Always on or Flashing
- Turn Signal Lamps and/or Indicators Inoperative Turn Signal Lamps and/or Indicators Inoperative
- Vanity Mirror Lamp(s) Always On Vanity Mirror Lamp(s) Always On
- Vanity Mirror Lamp(s) Inoperative Vanity Mirror Lamp(s) Inoperative