- Symptoms - Lighting Systems

Symptoms - Lighting Systems

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

* Perform the Diagnostic System Check - Vehicle before using the symptom tables in order to verify that all of the following are true: Initial Inspection and Diagnostic Overview

- 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 the following:

- Interior Lighting Systems Description and Operation
- Exterior Lighting Systems Description and Operation

Visual/Physical Inspection

* Inspect for aftermarket devices which could affect the operation of the lighting system. Refer to Checking Aftermarket Accessories. Component Tests and General Diagnostics
* 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 Always On (Automatic Transmission) Backup Lamps Always On (Manual Transmission)
* Backup Lamps Inoperative (Automatic Transmission) Backup Lamps Inoperative (Manual Transmission)
* Courtesy Lamps Always On
* Courtesy Lamps Inoperative
* Daytime Running Lamps (DRL) Always On (Domestic/Canada) Daytime Running Lamps (DRL) Always On (Norway/Sweden)
* Daytime Running Lamps (DRL) Inoperative (Domestic/Canada) Daytime Running Lamps (DRL) Inoperative (Norway/Sweden)
* Fog Lamp Indicator Always On
* Fog Lamp Indicator Inoperative
* Fog Lamp Indicator Always On - Rear
* Fog Lamp Indicator Inoperative - Rear
* Fog Lamps Always On
* Fog Lamps Inoperative
* Rear Fog Lamps Always On
* Rear Fog Lamps Inoperative
* Hazard Lamps Always On
* Hazard Lamps Inoperative
* Headlamps Always On - Low or High Beam
* Headlamps Inoperative - High Beams
* Headlamps Inoperative - Low Beams (Standard or w/TR7-TT6) Headlamps Inoperative - Low Beams (w/HID (TT6)) Headlamps Inoperative - Low Beams (w/Leveling (TR7) and HID (TT6))
* Headlamps Inoperative - Flash to Pass
* Headlamps Suggested Message On in Daylight Conditions
* Headlight Leveling Inoperative
* High Beam Indicator Always On
* High Beam Indicator Inoperative
* Interior Backlighting Does Not Dim
* Interior Backlighting Inoperative
* License Lamps Inoperative
* Lights On Indicator Always On
* Lights On Indicator Inoperative
* Park Lamps Always On
* Park Lamps Inoperative
* Position Lamps Inoperative
* Reading Lamp(s) Inoperative
* Rear Compartment Lamp(s) Always On
* Rear Compartment Lamp(s) Inoperative
* Repeater Lamps 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
* Twilight Sentinel Inoperative
* Vanity Mirror Lamp(s) Always On
* Vanity Mirror Lamp(s) Inoperative