A Symptoms - Lighting Systems

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

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

Visual/Physical Inspection
^ Inspect for aftermarket devices which could affect the operation of the Lighting System. Refer to Checking Aftermarket Accessories in Diagrams. Checking Aftermarket Accessories
^ 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.

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 Always On
^ Cornering Lamps Inoperative
^ Courtesy Lamps Always On Courtesy Lamps Inoperative
^ Daytime Running Lamps (DRL) Indicator Inoperative
^ Fog Lamp Indicator Inoperative
^ Fog Lamps Always On
^ Fog Lamps Inoperative
^ Hazard Lamps Always On
^ Hazard Lamps Inoperative
^ Headlamps Always On - Low or High Beam
^ Headlamps Inoperative - Low Beams
^ Headlamps Inoperative - High Beams
^ High Beam Indicator Inoperative
^ Illuminated Entry Lamps Inoperative
^ Interior Backlighting Does Not Dim
^ Interior Backlighting Inoperative
^ IP Compartment Lamp Inoperative
^ IP Compartment Lamp Always On
^ Park Lamps Always On
^ Park Lamps Inoperative
^ Reading Lamp(s) Inoperative
^ Rear Compartment Lamp(s) Always On
^ Rear Compartment Lamp(s) Inoperative
^ Rearview Mirror Lamp(s) Inoperative - Inside
^ Steering Wheel Controls Illumination Inoperative
^ Stoplamps Always On
^ Stoplamps 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