Rear Fog Lamps Inoperative Export
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Fog Lights Schematics | |||
1 | Did you perform the Lighting Diagnostic System Check? | Go to Step 2 | |
2 |
Do the fog lamps operate properly? | Go to Testing for Electrical Intermittents in Wiring Systems | Go to Step 3 |
3 | Is only one rear fog lamp inoperative? | Go to Step 7 | Go to Step 4 |
4 | At the inoperative lamp, test the rear fog lamp supply voltage circuit for a poor connection or an open. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 5 |
5 | At the inoperative lamp, test the ground circuit for a poor connection or an open. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 15 |
6 |
Do you hear a click from the relay? | Go to Step 16 | Go to Step 7 |
7 |
Does the test lamp illuminate? | Go to Step 14 | Go to Step 8 |
8 | Test the rear fog lamp relay control circuit for an open. Refer to Testing for Continuity in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 9 |
9 |
Does the test lamp illuminate when the switch is pressed? | Go to Step 13 | Go to Step 10 |
10 | Test the rear fog lamp switch signal circuit for an open. Refer to Testing for Continuity in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 11 |
11 |
Does the test lamp illuminate? | Go to Step 12 | Go to Step 17 |
12 | 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 22 | Go to Step 18 |
13 | Inspect for poor connections at the harness connector of the 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 22 | Go to Step 19 |
14 | Inspect for poor connections at the harness connector of the rear 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 22 | Go to Step 20 |
15 | Inspect for poor connections at the harness connector of the bulb. 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 22 | Go to Step 21 |
16 | Repair the open in the rear fog lamp supply voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 22 | -- |
17 | Repair the open in the ground circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 22 | -- |
18 | Replace the fog lamp switch. Refer to Rear Fog Lamp Switch Replacement . Did you complete the replacement? | Go to Step 22 | -- |
19 |
Important: Perform the setup procedure for the BCM. Replace the BCM. Refer to Body Control Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 22 | -- |
20 | Replace the fog lamp relay. Did you complete the replacement? | Go to Step 22 | -- |
21 | Replace the inoperative bulb. Refer to Rear Fog Lamp Bulb Replacement . Did you complete the replacement? | Go to Step 22 | -- |
22 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
