Headlamp Door(s) Inoperative
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Headlamp Door(s) Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Headlight Doors Schematics Connector End View Reference: Master Electrical Component List |
|||
| 1 | Did you perform the Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Lighting Systems |
| 2 | Turn the headlamps ON and OFF. Do the headlamp doors open and close? |
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | Is only one headlamp door inoperative? | Go to Step 9 | Go to Step 4 |
| 4 | Are the headlamp doors closed at all times? | Go to Step 5 | Go to Step 7 |
| 5 |
|
Go to Step 6 | Go to Step 14 |
| 6 | Connect a test lamp between the headlamps ON input circuit and the headlamp door control module ground circuit. Does the test lamp illuminate? |
Go to Step 12 | Go to Step 15 |
| 7 |
|
Go to Step 12 | Go to Step 8 |
| 8 |
|
Go to Step 16 | Go to Step 13 |
| 9 |
|
Go to Step 10 | Go to Step 17 |
| 10 | Test the inoperative headlamp door assembly motor up and down circuits for a short to ground, short to battery positive voltage or an open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and complete the repair? |
Go to Step 21 | Go to Step 11 |
| 11 | Inspect the harness connector for headlamp opening door assembly for a poor connection. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and complete the repair? |
Go to Step 21 | Go to Step 18 |
| 12 | Inspect the harness connector for headlamp door control module for a poor connection. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and complete the repair? |
Go to Step 21 | Go to Step 19 |
| 13 | Inspect the harness connector for multifunction turn signal lever for a poor connection. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and complete the repair? |
Go to Step 21 | Go to Step 20 |
| 14 | Repair a poor connector or an open in the headlamp ON input circuit. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 21 | - |
| 15 | Repair a poor connector or an open in the ground circuit of the headlamp door control module. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 21 | - |
| 16 | Repair a short to battery positive voltage in the headlamps OFF input circuit. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 21 | - |
| 17 | Repair a short to ground or an open in the inoperative headlamp door battery supply circuit. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 21 | - |
| 18 | Replace the headlamp opening door assembly. Refer to Headlamp Opening Door Replacement . Did you complete the replacement? |
Go to Step 21 | - |
| 19 | Replace the headlamp control module. Refer to Headlamp Control Module Replacement . Did you complete the replacement? |
Go to Step 21 | - |
| 20 | Replace the multifunction turn signal lever. Refer to Multifunction, Turn Signal Switch Replacement
in Steering Wheel and Column. Did you complete the replacement? |
Go to Step 21 | - |
| 21 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 2 |