Rear Fog Lamps Inoperative
Rear Fog Lamps Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Fog Lights Schematics Connector End View Reference: Lighting Systems Connector End Views or Data Communication Connector End Views |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Verify that the rear fog lamp is inoperative. Does the rear fog lamp operate normally? |
Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 | Test the inoperative bulb or tail lamp printed circuit board for an open or poor terminal contact and replace as necessary. Refer to Circuit Testing
or Tail Lamp Bulb Replacement orTail Lamp Circuit Board Replacement . Did you find and correct a condition? |
Go to Step 15 | Go to Step 4 |
| 4 | With the engine Off, turn the key to RUN and the headlamp switch to PARK. Do the park lamps illuminate? |
Go to Step 5 | Go to Symptoms - Lighting Systems |
| 5 | Inspect the RR FOG fuse. Is the fuse open? |
Go to Step 6 | Go to Step 7 |
| 6 | Test for a short to ground in the rear fog lamp supply voltage circuit. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct a condition? |
Go to Step 15 | Go to Step 13 |
| 7 |
|
Go to Step 10 | Go to Step 8 |
| 8 | Test the rear fog lamp switch signal and ground circuits for an open or high resistance. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct a condition? |
Go to Step 15 | Go to Step 9 |
| 9 |
|
Go to Step 14 | Go to Step 11 |
| 10 | Test for an open or high resistance in the rear fog lamp supply voltage circuit and the ground circuit. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct a condition? |
Go to Step 15 | Go to Step 13 |
| 11 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 15 | Go to Step 12 |
| 12 | Replace the BCM. Refer to Control Module References
for replacement, setup and programming. Did you complete the replacement? |
Go to Step 15 | - |
| 13 | Replace the rear fog lamp relay. Refer to Relay Replacement (Attached to Wire Harness)
or Relay Replacement (Within an Electrical Center)
. Did you complete the repair? |
Go to Step 15 | - |
| 14 | Replace the rear fog lamp switch. Refer to Headlamp Switch Replacement . Did you complete the repair? |
Go to Step 15 | - |
| 15 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |