Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Fog Lights Schematics | |||
1 | Did you perform the Lighting Diagnostic System Check? | Go to Step 2 | |
2 |
Do both fog lamps illuminate? | Go to Testing for Electrical Intermittents in Wiring Systems | Go to Step 3 |
3 | Is only one lamp inoperative? | Go to Step 4 | Go to Step 6 |
4 | At the inoperative lamp, test the front fog lamps supply voltage circuit for high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 5 |
5 | At the inoperative lamp, test the front fog lamps ground circuit for high resistance or an open. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 20 |
6 |
Does the scan tool display ON? | Go to Step 7 | Go to Park Lamps Inoperative |
7 | With the scan tool, command the fog lamps ON. Do the fog lamps illuminate? | Go to Step 8 | Go to Step 11 |
8 |
Does the scan tool display the switch status as ON? | Go to Step 9 | Go to Step 14 |
9 | With the scan tool, read the Park Lamps status. Does the scan tool display the switch status as ON? | Go to Step 18 | Go to Step 10 |
10 |
Does the test lamp illuminate? | Go to Step 18 | Go to Step 22 |
11 | Test the front fog lamps supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 12 |
12 |
Does the test lamp illuminate? | Go to Step 19 | Go to Step 13 |
13 | Test for high resistance or an open in the fog lamp relay control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 14 |
14 |
Does the test lamp illuminate? | Go to Step 15 | Go to Step 21 |
15 |
Does the test lamp illuminate? | Go to Step 18 | Go to Step 16 |
16 | Test the front fog lamp switch signal circuit of the BCM for high resistance or an open. 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 |
17 | 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 23 |
18 | 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 27 | Go to Step 24 |
19 | Inspect for poor connections at the harness connector of 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 25 |
20 | 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 27 | Go to Step 26 |
21 | Repair the open in the ground circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 27 | -- |
22 | Repair the interior park lamps supply voltage circuit. Did you complete the repair? | Go to Step 27 | -- |
23 | Replace the fog lamp switch. Refer to Fog Lamp and Cargo Lamp Switch Assembly Replacement . Did you complete the replacement? | Go to Step 27 | -- |
24 |
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 27 | -- |
25 | Replace the fog lamp relay. Did you complete the replacement? | Go to Step 27 | -- |
26 | Replace both lamps. Refer to Front Fog Lamp Replacement . 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 |
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 |
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Fog Lights Schematics | |||
1 | Did you perform the Lighting Diagnostic System Check? | Go to Step 2 | |
2 |
Does the rear fog lamp and the rear fog lamp indicator illuminate? | Go to Testing for Electrical Intermittents in Wiring Systems | Go to Step 3 |
3 |
Do you hear a click from the relay? | Go to Step 4 | Go to Step 6 |
4 | At the inoperative lamp, test the rear fog lamp supply voltage circuit for high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 20 | Go to Step 5 |
5 | At the inoperative lamp, test the ground circuit for high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 20 | Go to Step 14 |
6 |
Does the test lamp illuminate? | Go to Step 13 | Go to Step 7 |
7 | Test the rear fog lamp relay control circuit for high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 20 | Go to Step 8 |
8 |
Does the test lamp illuminate when the switch is pressed? | Go to Step 12 | Go to Step 9 |
9 | Test the rear fog lamp switch signal circuit for high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 20 | Go to Step 10 |
10 |
Does the test lamp illuminate? | Go to Step 11 | Go to Step 15 |
11 | 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 20 | Go to Step 16 |
12 | 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 20 | Go to Step 17 |
13 | Inspect for poor connections at the harness connector of 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 20 | Go to Step 18 |
14 | 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 20 | Go to Step 19 |
15 | Repair the open in the ground circuit to the rear fog lamp switch. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 20 | -- |
16 | Replace the fog lamp switch. Refer to Rear Fog Lamp Switch Replacement . Did you complete the replacement? | Go to Step 20 | -- |
17 |
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 20 | -- |
18 | Replace the fog lamp relay. Did you complete the replacement? | Go to Step 20 | -- |
19 | Replace the inoperative bulb. Refer to Rear Fog Lamp Bulb Replacement . Did you complete the replacement? | Go to Step 20 | -- |
20 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |