Park, License and Tail Lamps Always On
WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Park, License and Tail Lamps Always On
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Exterior Lights Schematics Connector End View Reference: Master Electrical Component List |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 |
|
Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 | Disconnect the lamp switch assembly. Are the park lamps illuminated? |
Go to Step 4 | Go to Step 11 |
| 4 | Test for a short to ground in the park lamp ON signal circuit. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 13 | Go to Step 5 |
| 5 | Test for the following in the exterior lamps OFF input circuit:
Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? |
Go to Step 13 | Go to Step 6 |
| 6 | The PK LP relay is located on the reverse side of the I/P fuse block. Remove the PK LP relay. Do the park lamps turn OFF? |
Go to Step 7 | Go to Step 10 |
| 7 |
|
Go to Step 8 | Go to Step 9 |
| 8 | Test for a short to ground in the park lamp relay control circuit. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 13 | Go to Step 12 |
| 9 | Replace the PK LP relay. Refer to Relay Replacement (Within an Electrical Center)
or Relay Replacement (Attached to Wire Harness)
. Did you complete the replacement? |
Go to Step 13 | - |
| 10 | Repair a short to battery positive voltage in the park lamp voltage supply circuit. Refer to Circuit Testing
and Wiring Repairs
. Did you complete the repair? |
Go to Step 13 | - |
| 11 | Replace the lamp switch assembly. Refer to Headlamp Switch Replacement . Did you complete the repair? |
Go to Step 13 | - |
| 12 | Replace the body control module (BCM). Refer to Control Module References
for replacement, setup and programming. Did you complete the replacement? |
Go to Step 13 | - |
| 13 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |