Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Inspect the HORN fuse in the engine wiring harness junction block (underhood fuse relay center). Is the HORN fuse open? | -- | Go to Step 2 | Go to Step 3 |
2 |
Is the repair complete? | -- | System OK | -- |
3 | Inspect the condition of G 106. Is the ground clean and tight? | -- | Go to Step 5 | Go to Step 4 |
4 | Repair G 106 as necessary. Is the repair complete? | -- | System OK | -- |
5 | Are both horns inoperative? | -- | Go to Step 7 | Go to Step 6 |
6 |
Did the test light illuminate? | -- | Go to Step 9 | Go to Step 8 |
7 |
Did the test light illuminate? | -- | Go to Step 12 | Go to Step 10 |
8 | Locate and repair the open in CKT 29 (DK GRN) between the horn relay connector, cavity D 1and the horn connector, cavity B. Is the repair complete? | -- | System OK | -- |
9 | Connect a test light from the horn connector, cavity A to B +. Did the test light illuminate? | -- | Go to Step 20 | Go to Step 11 |
10 | Locate and repair the open in CKT 640 (ORN) between the engine wiring harness junction block, cavity L 12 and the horn relay connector. Is the repair complete? | -- | System OK | -- |
11 | Locate and repair the open in CKT 150 (BLK) between the horn connector, cavity A and G 106. Is the repair complete? | -- | System OK | -- |
12 |
Did the test light illuminate? | -- | Go to Step 13 | Go to Step 14 |
13 |
Did the test light illuminate? | -- | Go to Step 19 | Go to Step 16 |
14 |
Is the resistance greater than the specified value? | 1.0 ohms | Go to Step 17 | Go to Step 15 |
15 | Use a J 39200 DMM to measure the resistance from the horn switch connector, cavity A 11 to ground while pressing the horn button. Is the resistance greater than the specified value? | 5.0 ohms | Go to Step 18 | Go to Step 13 |
16 | Locate and repair the open in CKT 29 (DK GRN) between the horn relay connector, cavity D 1 and the horn connector, cavity B. Is the repair complete? | -- | System OK | -- |
17 | Locate and repair the open in CKT 28 between the horn relay connector, cavity C 1 and the horn switch connector, cavity A 11. Is the repair complete? | -- | System OK | -- |
18 | Replace the horn switch. Refer to Horn Switch Replacement - On Vehicle in Steering Wheel and Column -Tilt. Is the repair complete? | -- | System OK | -- |
19 | Replace the horn relay. Refer to Horn Relay Replacement . Is the repair complete? | -- | System OK | -- |
20 | Replace the horn(s). Is the repair complete? | -- | System OK | -- |
