Fog Lamps Inoperative - All Luxury
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: This diagnostic procedure should only be used if the headlamp and the park lamp systems are functioning properly. If any faults are present with those systems, they must be repaired first. | ||||
1 | Did you perform the Fog Lights System Check? | -- | Go to Step 2 | Go to Fog Lights System Check |
2 |
Does the test lamp light? | -- | Go to Step 7 | Go to Step 3 |
3 | Backprobe the fog lamp switch connector with a J 35616-200 test lamp from cavity B to ground. Does the test lamp light? | -- | Go to Step 10 | Go to Step 4 |
4 | Backprobe the fog lamp switch connector with a J 35616-200 test lamp from cavity D to ground. Does the test lamp light? | -- | Go to Step 6 | Go to Step 5 |
5 | Repair the open in CKT 9 (BRN) between the fog lamp switch and S210. Is the repair complete? | -- | Go to Fog Lights System Check | -- |
6 | Replace the fog lamp switch. Is the repair complete? | -- | Go to Fog Lights System Check | -- |
7 | Connect a J 35616-200 test lamp from cavity G1 to cavity H3 of the fog lamp relay. Does the test lamp light? | -- | Go to Step 8 | Go to Step 11 |
8 | Connect a J 35616-200 test lamp from fog lamp relay, cavity H1, to ground. Does the test lamp light? | -- | Go to Step 9 | Go to Step 12 |
9 | Connect a fuse jumper from cavity H1 to cavity G3 of the fog lamp relay. Do the fog lamps light? | -- | Go to Step 13 | Go to Step 14 |
10 | Repair the open in CKT 317 (YEL) between the fog lamp switch and the convenience center. Is the repair complete? | -- | Go to Fog Lights System Check | -- |
11 | Repair the open in CKT 11 (LT GRN) between the fog lamp relay and S225. Is the repair complete? | -- | Go to Fog Lights System Check | -- |
12 | Repair the open in CKT 340 (ORN) between the instrument panel fuse block and the convenience center. Is the repair complete? | -- | Go to Fog Lights System Check | -- |
13 | Replace the fog lamp relay. Is the repair complete? | -- | Go to Fog Lights System Check | -- |
14 | Repair the open in CKT 34 (PPL) between the convenience center and splice S126. Is the repair complete? | -- | Go to Fog Lights System Check | -- |
Fog Lamps Inoperative - All Z71 Tahoe/Limited
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: This diagnostic procedure should only be used if the headlamp system is functioning properly. If any faults are present with those systems, they must be repaired first. | ||||
1 | Did you perform the Fog Lights System Check? | -- | Go to Step 2 | Go to Fog Lights System Check |
2 |
Does the test lamp light? | -- | Go to Step 7 | Go to Step 3 |
3 | Backprobe the fog lamp switch connector with a J 35616-200 test lamp from cavity B to ground. Does the test lamp light? | -- | Go to Step 10 | Go to Step 4 |
4 | Backprobe the fog lamp switch connector with a J 35616-200 test lamp from cavity D to ground. Does the test lamp light? | -- | Go to Step 6 | Go to Step 5 |
5 | Repair the open in CKT 241 (BRN) between the fog lamp switch and the IP fuse block. Is the repair complete? | -- | Go to Fog Lights System Check | -- |
6 | Replace the fog lamp switch. Is the repair complete? | -- | Go to Fog Lights System Check | -- |
7 | Connect a J 35616-200 test lamp from cavity 2 to cavity 5 of the fog lamp relay. Does the test lamp light? | -- | Go to Step 8 | Go to Step 11 |
8 | Connect a J 35616-200 test lamp from fog lamp relay, cavity 1, to ground. Does the test lamp light? | -- | Go to Step 9 | Go to Step 12 |
9 | Connect a fuse jumper from cavity 1 to cavity 4 of the fog lamp relay. Do the fog lamps light? | -- | Go to Step 13 | Go to Step 14 |
10 | Repair the open in CKT 317 (YEL) between the fog lamp switch and the convenience center. Is the repair complete? | -- | Go to Fog Lights System Check | -- |
11 | Repair the open in CKT 11 (LT GRN) between the fog lamp relay and the high beam headlamp. Is the repair complete? | -- | Go to Fog Lights System Check | -- |
12 | Repair the open in CKT 40 (ORN) between the instrument panel fuse block and the convenience center. Is the repair complete? | -- | Go to Fog Lights System Check | -- |
13 | Replace the fog lamp relay. Is the repair complete? | -- | Go to Fog Lights System Check | -- |
14 | Repair the open in CKT 34 (PPL) between the fog lamp relay and the fog lamps. Is the repair complete? | -- | Go to Fog Lights System Check | -- |
