- Symptoms - Lighting

SYMPTOMS - LIGHTING SYSTEMS

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

- Perform the Diagnostic System Check - Vehicle before using a symptom table in order to verify that all of the following conditions are true:
- There are no DTCs set.
- The control modules can communicate via the serial data link. Testing and Inspection
- Review the system description and operation in order to familiarize yourself with the system functions. Refer to the following:
- 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
Thoroughly inspect the wiring and connectors. An incomplete inspection of the wiring and connectors may result in misdiagnosis causing part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, 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 (Manual Transmission)
- Backup Lamps Always On (Automatic Transmission)
- Backup Lamps Inoperative (Manual Transmission)
- Backup Lamps Inoperative (Automatic Transmission)
- Daytime Running Lamps (DRL) 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 Beams
- Headlamps Inoperative - High Beams
- Headlamps Inoperative - Low Beams
- Headlamps Inoperative - Low and High Beams
- Headlamps Inoperative - Flash to Pass
- High Beam Indicator Malfunction
- High Mounted Stop Lamp Inoperative
- Interior Backlighting Does Not Dim
- Interior Backlighting Inoperative
- License Lamps Inoperative
- Marker Lamps Inoperative
- Park Lamps Always On
- Park Lamps Inoperative
- Rear Compartment Lamp(s) Always On
- Rear Compartment Lamp(s) Inoperative
- Rearview Mirror Lamp(s) Inoperative - Inside
- Stop Lamps Always On
- Stop Lamps Inoperative
- Turn Signal Lamps and/or Indicators Always On or Flashing
- Turn Signal Lamps and/or Indicators Inoperative