Stop Lamps Always On
WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
Stop Lamps Always On
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Exterior Lights Schematics Connector End View Reference: Master Electrical Component List in Wiring Systems |
|||
| 1 | Did you perform the Lighting System Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Lighting Systems |
| 2 | Ensure that the brake pedal is not depressed. Do the stop lamps remain OFF? |
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | Disconnect the body control module (BCM) connector C2. Does one stop lamp stay illuminated? |
Go to Step 5 | Go to Step 4 |
| 4 | Test for a poor connection or an open in the brake pedal position switch low reference circuit. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 7 | Go to Step 7 |
| 5 | Repair a short to battery positive voltage in the illuminated stop lamp voltage supply circuit. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 7 | - |
| 6 |
IMPORTANT:
Perform the setup procedure for the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration
in Body Control System. Replace the BCM. Refer to Body Control Module Replacement
in Body Control System.Did you complete the replacement? |
Go to Step 6 | - |
| 7 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |