Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Horns Diagnostic System Check performed? | -- | Go to Step 2 | |
2 | Verify that the horns are inoperative. Do the horns operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Inspect the HORN fuse. Is the HORN fuse open? | -- | Go to Step 4 | Go to Step 5 |
4 | Repair the short to ground in CKT 1329 (DK GRN) or horns. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 12 | -- |
5 |
Does the test lamp light in both positions? | -- | Go to Step 7 | Go to Step 6 |
6 | Replace the underhood fuse block. Refer to Underhood Fuse Block Replacement in Engine Electrical. Is the repair complete? | -- | Go to Step 12 | -- |
7 |
Does the horn sound? | -- | Go to Step 9 | Go to Step 8 |
8 | Replace the Horn Relay. Refer to Horn Relay Replacement . Is the repair complete? | -- | Go to Step 12 | -- |
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 - Tilt in Steering Wheel and Column or Horn Switch Replacement - On Vehicle -Standard in Steering Wheel and Column. Is the repair complete? | -- | Go to Step 12 | -- |
11 |
Does the horn sound? | -- | Go to Step 11 | Go to Step 12 |
12 | Replace the BCM. Refer to Body Control Module Replacement in Body Control System. Is the repair complete? | -- | Go to Step 12 | -- |
13 | Locate and repair open in CKT 28 (BLK). Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Is repair complete? | -- | Go to Step 12 | -- |
14 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
