Symptoms - Lighting Systems. Buick Regal (China) 2001

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2001 🢒 Regal (China) 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Symptoms - Lighting Systems

Important:

Perform the Diagnostic System Check - Lighting Systems in order to verify that :

•	No DTCs are set.

•	The control module(s) can communicate via the serial data link.

Review the system operation in order to familiarize yourself with the system functions. Refer to Exterior Lighting Systems Description and Operation or Interior Lighting Systems Description and Operation .

•	Inspect for aftermarket devices which may affect the operation of the lighting system. Refer to Checking Aftermarket Accessories .

•	Inspect the easily accessible or visible system components for obvious damage or conditions which may cause the symptom.

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

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

•	Fog Lamp Indicator Inoperative

•	Fog Lamps Always On

•	Fog Lamps Inoperative

•	Hazard Lamps Inoperative

•	Headlamp Low or High Beams Always On

•	Headlamps Inoperative - Low Beams

•	Headlamps Inoperative - High Beams

•	Low and High Beams Headlamps Inoperative

•	Headlamps Inoperative in Low Light Conditions

•	High Beam Indicator Inoperative

•	Illuminated Entry Lamps Inoperative

•	Interior Backlighting Does Not Dim

•	Interior Backlighting Inoperative

•	Instrument Panel Compartment Lamp Inoperative

•	Instrument Panel Compartment Lamp Always On

•	Park Lamps Always On

•	Park Lamps Inoperative

•	Reading Lamp Inoperative

•	Rear Compartment Lamp Always On

•	Rear Compartment Lamp Inoperative

•	Inside Rearview Mirror Lamp 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