Symptoms - Lighting Systems

Symptoms - Lighting Systems

Important: Review the Exterior Lighting Systems Description and Operation (Exterior Lighting Systems Description and Operation) and the Interior Lighting Systems Description and Operation (Interior Lighting Systems Description and Operation) in order to familiarize yourself with the system functions.


Visual/Physical Inspection

* Inspect for aftermarket devices which could affect the operation of the system. Refer to Checking Aftermarket Accessories (Checking Aftermarket Accessories).
* Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
* Inspect all related ground points for being clean and tight.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections).

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)
* Daytime Running Lamps (DRL) On with Park Brake Applied (Daytime Running Lamps (DRL) On with Park Brake Applied)
* Dome Lamps Always On (Dome Lamps Always On)
* Dome Lamps Inoperative (Dome Lamps Inoperative)
* Hazard Lamps Always On (Hazard Lamps Always On)
* Hazard Lamps Inoperative (Hazard Lamps Inoperative)
* Headlamps Inoperative - Low Beams (Headlamps Inoperative - Low Beams)
* Headlamps Inoperative - High Beams (Headlamps Inoperative - High Beams)
* License Lamps Inoperative (License Lamps Inoperative)
* Park Lamps Always On (Park Lamps Always On)
* Park Lamps Inoperative (Park Lamps Inoperative)
* 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)