Park, License, and Tail Lamps Inoperative
Park, License, and Tail Lamps Inoperative
| 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 | Verify that the park, license, and tail lamps are inoperative. Do the park, license, and tail lamps operate normally? |
Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 | Are all park, license, and tail lamps inoperative? | Go to Step 6 | Go to Step 4 |
| 4 | Test the voltage supply circuit of the inoperative lamp for high resistance or an open. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 19 | Go to Step 5 |
| 5 | Test the ground circuit of the inoperative lamp for high resistance or an open. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 19 | Go to Step 15 |
| 6 | The PK LP relay is located on the reverse side of the I/P fuse block.
Do the park lamps illuminate? |
Go to Step 7 | Go to Step 14 |
| 7 |
|
Go to Step 9 | Go to Step 8 |
| 8 | Test for a poor connection or a short to battery positive voltage open in the park lamp relay control circuit. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 19 | Go to Step 16 |
| 9 |
|
Go to Step 10 | Go to Step 12 |
| 10 | Test for a short to ground in the exterior lamps OFF input circuit. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 19 | Go to Step 11 |
| 11 | Inspect for poor connections at the harness connector of the multifunction turn signal switch. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 19 | Go to Step 17 |
| 12 | Test for a poor connection, an open, or a short to battery positive in the park lamp switch on the signal circuit. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 19 | Go to Step 13 |
| 13 | Inspect for poor connections at the harness connector of the BCM. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 19 | Go to Step 18 |
| 14 | Repair a short to ground, an open, or a poor connection in the park lamp supply voltage circuit. Refer to Circuit Testing
and Wiring Repairs
. Did you complete the repair? |
Go to Step 19 | - |
| 15 | Replace the inoperative bulb. Did you complete the replacement? |
Go to Step 19 | - |
| 16 | Replace the PK LP relay. Refer to Relay Replacement (Within an Electrical Center)
or Relay Replacement (Attached to Wire Harness)
. Did you complete the repair? |
Go to Step 19 | - |
| 17 | Replace the lamp switch assembly. Refer to Headlamp Switch Replacement (Impala) or Headlamp Switch Replacement (Monte Carlo) . Did you complete the repair? |
Go to Step 19 | - |
| 18 | Replace the BCM. Refer to Control Module References
for replacement, setup, and programming. Did you complete the replacement? |
Go to Step 19 | - |
| 19 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |