- Symptoms - Lighting Systems

Symptoms - Lighting Systems

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

1. Perform the Diagnostic System Check - Vehicle 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. Initial Inspection and Diagnostic Overview

2. Review the system operation and circuit descriptions that apply to the customer complaint in order to familiarize yourself with the system functions. Refer to the following list:

* Exterior Lighting Systems Description and Operation
* 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. Refer to Testing for Intermittent Conditions and Poor Connections. Component Tests and General Diagnostics

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

* Backup Lamps Malfunction
* Cornering Lamps Malfunction
* Courtesy Lamps Malfunction
* Daytime Running Lamps Malfunction
* Front Fog Lamps Malfunction
* Rear Fog Lamps Malfunction
* Hazard Lamps Malfunction
* Headlamp Switch On Indicator Inoperative
* Headlamps Malfunction
* Headlamps Flash to Pass Inoperative
* Headlamp Leveling Malfunction
* Interior Backlighting Malfunction
* Park, License, and/or Tail Lamps Malfunction
* Reading Lamp Inoperative
* Stop Lamps Malfunction
* Turn Signal Lamps and/or Indicators Malfunction
* Vanity Mirror Lamp Malfunction