Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Review the fog lamp operation and perform the necessary inspections. Did you complete the system review and inspection? | -- | Go to Step 2 | Go to Symptoms |
2 | Attempt to operate the fog lamp. Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Can you verify that the relay is closing its contacts when the rear fog lamps are turned on? | -- | Go to Step 4 | Go to Step 10 |
4 |
Does the rear fog lamp illuminate? | -- | Go to Step 9 | Go to Step 5 |
5 | Test the voltage at the rear fog lamp relay socket, cavity B3. Is battery voltage available at cavity B3 in the rear fog lamp relay socket? | B+ | Go to Step 7 | Go to Step 6 |
6 | Repair the open CKT 340 (ORN) between the DRL fuse and the rear fog lamp relay. Did you complete the repair? | -- | Go to Step 20 | -- |
7 |
Did you replace the fog lamp? | -- | Go to Step 20 | Go to Step 8 |
8 | Repair the open CKT 250 (BLK) between the rear fog lamp and ground. Did you complete the repair? | -- | Go to Step 20 | -- |
9 | Replace the rear fog lamp relay. Did you complete the repair? | -- | Go to Step 20 | -- |
10 | Test the continuity of the rear fog lamp relay coil. Does the test indicate continuity? | -- | Go to Step 11 | Go to Step 9 |
11 |
Is battery voltage available at cavity B1? | B+ | Go to Step 13 | Go to Step 12 |
12 | Repair the open CKT 10 (YEL) between the headlamp switch and the rear fog lamp switch. Is the repair complete? | -- | Go to Step 20 | -- |
13 |
Is battery voltage available at cavity D of the rear fog lamp switch connector? | -- | Go to Step 15 | Go to Step 14 |
14 | Repair the open CKT 10 (YEL) between the rear fog lamp relay and splice S250. Is the repair complete? | -- | Go to Step 20 | -- |
15 |
Is battery voltage available at cavity E? | B+ | Go to Step 17 | Go to Step 16 |
16 | Repair the open CKT 1977 (YEL) between the rear fog lamp relay and the rear fog lamp switch. Did you complete the repair? | -- | Go to Step 20 | -- |
17 | Test continuity of the circuit between the rear fog lamp switch connector cavity B and ground. Does the test indicate continuity? | -- | Go to Step 19 | Go to Step 18 |
18 | Repair the open CKT 150 (BLK) between the rear fog lamp switch and ground. Did you complete the repair? | -- | Go to Step 20 | -- |
19 | Replace the rear fog lamp switch. Did you complete the repair? | -- | 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 |
