Fog Lamps Inoperative
Fog Lamps Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Fog Lights Schematics Connector End View Reference: Lighting Systems Connector End Views |
|||
| 1 | Did you perform the Lighting System Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Lighting Systems |
| 2 |
|
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | Is only one lamp inoperative? | Go to Step 4 | Go to Step 5 |
| 4 |
|
Go to Step 17 | Go to Step 20 |
| 5 | With a scan tool, command the fog lamps ON. Do the fog lamps illuminate? |
Go to Step 11 | Go to Step 13 |
| 6 |
|
Go to Step 7 | Go to Step 14 |
| 7 | Probe the switch side ground circuit of the fog lamp relay with a test lamp that is connected to battery positive voltage. Does the test lamp illuminate? |
Go to Step 8 | Go to Step 19 |
| 8 | Probe the switch side battery positive voltage circuit of the fog lamp relay with a test lamp that is connected to a good ground. Does the test lamp illuminate? |
Go to Step 9 | Go to Step 16 |
| 9 | Connect a 10 amp fused jumper wire between the switch side battery positive voltage circuit of the fog lamp relay and the front fog lamps supply voltage circuit of the fog lamp relay. Do the fog lamps illuminate? |
Go to Step 18 | Go to Step 10 |
| 10 |
|
Go to Step 22 | Go to Step 23 |
| 11 |
|
Go to Step 12 | Go to Step 13 |
| 12 | Test the ground circuit of the fog lamp switch for an open or high resistance. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 27 | Go to Step 15 |
| 13 | Test the front fog lamp switch signal circuit for an open or high resistance. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 27 | Go to Step 16 |
| 14 | Test the fog lamp relay control circuit for an open, high resistance, or short to ground. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 27 | Go to Step 16 |
| 15 | Inspect for poor connections at the harness connector of the fog lamp switch. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 27 | Go to Step 24 |
| 16 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 27 | Go to Step 25 |
| 17 | Inspect for poor connections at the harness connector of the inoperative fog lamp. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 27 | Go to Step 20 |
| 18 | Inspect for poor connections at the fog lamp relay. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 27 | Go to Step 26 |
| 19 | Repair an open or high resistance in the switch side ground circuit of the fog lamp relay. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 27 | - |
| 20 | Repair an open or high resistance in the front fog lamp supply voltage circuit of the inoperative fog lamp. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 27 | - |
| 21 | Repair an open or high resistance in the ground circuit of the inoperative fog lamp. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 27 | - |
| 22 | Repair an open or high resistance in the ground circuit of the front fog lamps. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 27 | - |
| 23 | Repair an open or high resistance in the front fog lamps supply voltage circuit. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 27 | - |
| 24 | Replace the fog lamp switch. Refer to Fog Lamp Switch Replacement - Front . Did you complete the replacement? |
Go to Step 27 | - |
| 25 |
IMPORTANT:
Perform the set up procedure for the body control module. Refer to Body Control Module (BCM) Programming/RPO Configuration
in Body Control System. Replace the body control module. Refer to Body Control Module Replacement
in Body Control System.Did you complete the replacement? |
Go to Step 27 | - |
| 26 | Replace the fog lamp relay. Refer to Relay Replacement (Within an Electrical Center)
in Wiring Systems. Did you complete the replacement? |
Go to Step 27 | - |
| 27 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |