Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Horns Diagnostic System Check performed? | -- | Go to Step 2 | |
2 | Verify that the horns are always on. Do the horns operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Remove the horn relay from the underhood fuse block. Does the horn continue to sound? | -- | Go to Step 4 | Go to Step 5 |
4 | Repair the short to the voltage in the CKT 1329 (DK GRN) between the horn relay and the horns. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 12 | -- |
5 | Connect a test lamp between terminal 1 and terminal 2 in the horn relay socket. Does the test lamp light? | -- | Go to Step 7 | Go to Step 6 |
6 | Replace the horn relay. Refer to Horn Relay Replacement . Is the repair complete? | -- | Go to Step 12 | -- |
7 |
Does the test lamp light? | -- | Go to Step 8 | Go to Step 9 |
8 |
Does the test lamp light? | -- | Go to Step 10 | Go to Step 11 |
9 | Replace the horn switch. Refer to Horn Switch Replacement - On Vehicle in Steering Wheel and Column -Tilt or Horn Switch Replacement - On Vehicle in Steering Wheel and Column - Standard. Is the repair complete? | -- | Go to Step 12 | -- |
10 | Repair the short to ground in the CKT 28 (BLK) between the horn relay and the horn switch or the BCM. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 12 | -- |
11 | Replace the BCM. Refer to Body Control Module Replacement in Body Control System. Is the repair complete? | -- | Go to Step 12 | -- |
12 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
