Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Horns System Check performed? | -- | Go to Step 2 | Go to Horns System Check |
2 | Inspect the HORN fuse. Is the HORN fuse open? | -- | Go to Step 3 | Go to Step 4 |
3 | Repair the short to ground in CKT 1329 (DK GRN) or horns. Refer to Wiring Repairs Is the repair complete? | -- | Go to Horns System Check | -- |
4 |
Does the test lamp light in both positions? | -- | Go to Step 6 | Go to Step 5 |
5 | Replace the Underhood Fuse Block. Refer to Underhood Fuse Block Replacement Is the repair complete? | -- | Go to Horns System Check | -- |
6 |
Does the horn sound? | -- | Go to Step 8 | Go to Step 7 |
7 | Replace the Horn Relay. Refer to Horn Relay Replacement Is the repair complete? | -- | Go to Horns System Check | -- |
8 | Connect a test lamp from Body harness side connector C211 cavity A11 to ground. Does the test lamp light? | -- | Go to Step 9 | Go to Step 13 |
9 | Connect a fused jumper from Body harness side connector C211 cavity A11 to ground. Does the horn sound? | -- | Go to Step 10 | Go to Step 11 |
10 | Replace the horn switch. Refer to Horn Switch Replacement - On Vehicle Is the repair complete? | -- | Go to Horns System Check | -- |
11 |
Does the horn sound? | -- | Go to Step 12 | Go to Step 13 |
12 | Replace the BCM. Refer to Body Control Module Replacement Is the repair complete? | -- | Go to Horns System Check | -- |
13 | Locate and repair open in CKT 28 (BLK). Refer to Wiring Repairs Is repair complete? | -- | Go to Horns System Check | -- |
