Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
|
Important: Use the J 35616-A Connector Test Adapter Kit when a diagnostic procedure requires inspecting or probing a terminal. Use of the adapter prevents damage to the terminal. Use of the adapter also indicates if the contact tension is sufficient. If the contact tension seems incorrect, refer to Checking Terminal Contact. | ||||
1 | Inspect the vehicle for the theft deterrent option. Is the vehicle equipped with the theft deterrent option? | -- | Go to Step 2 | Go to Step 3 |
2 | Inspect the vehicle for body control module (BCM) diagnostic trouble codes (DTCs). Are there any DTCs present? | -- | Go to Step 3 | |
3 | Inspect the horn fuse for an open. Is the horn fuse open? | -- | Go to Step 4 | Go to Step 5 |
4 |
Is the horn fuse open? | -- | Go to Step 6 | Go to Step 7 |
5 |
Is the test light on? | -- | Go to Step 13 | Go to Step 6 |
6 | Replace the underhood accessory wiring junction block. Refer to Accessory Wiring Junction Block Replacement for service procedure. Is the repair complete? | -- | Go to Horns System Check | -- |
7 |
Is the test light on? | -- | Go to Step 8 | Go to Step 9 |
8 |
Is the test light on? | -- | Go to Step 6 | Go to Step 12 |
9 | Place the horn relay back in the underhood accessory wiring junction block. Is the horn fuse open? | -- | Go to Step 10 | Go to Step 11 |
10 | Replace the horn relay. Refer to Horn Relay Replacement for service procedure. Is the repair complete? | -- | Go to Horns System Check | -- |
11 |
Does the horn fuse open? | -- | Go to Step 21 | Go to Step 5 |
12 | Repair the short to ground in circuit 29 between the underhood accessory wiring junction block connector C3 terminal C8 and the horn assembly terminal B. Is the repair complete? | -- | Go to Horns System Check | -- |
13 | Using a test light, connect between the other horn relay circuit 740 and ground. Is the test light on? | -- | Go to Step 14 | Go to Step 6 |
14 |
Is the test light on? | -- | Go to Step 18 | Go to Step 15 |
15 |
Is the test light on? | -- | Go to Step 16 | Go to Step 17 |
16 | Inspect for a poor connection at the switch ground in the steering wheel. Is there a poor connection? | -- | Go to Step 24 | Go to Step 25 |
17 | Repair circuit 28 for a short to B+ or an open circuit between the underhood accessory wiring junction block and the horn switch. Is the repair complete? | -- | Go to Horns System Check | -- |
18 | Momentarily connect a 5A fused jumper between the horn relay terminals for circuit 29 and circuit 740. Do the horns sound? | -- | Go to Step 10 | Go to Step 19 |
19 |
Is the test light on? | -- | Go to Step 20 | Go to Step 23 |
20 | Using a test light, connect between the horn assembly connector terminal A and B+. Is the test light on? | -- | Go to Step 21 | Go to Step 22 |
21 | Replace the horn assembly. Refer to Horn Replacement for service procedure. Is the repair complete? | -- | Go to Horns System Check | -- |
22 | Repair the open in circuit 1350 between the horn assembly connector terminal A and G101. Is the repair complete? | -- | Go to Horns System Check | -- |
23 |
Is the test light on? | -- | Go to Step 26 | Go to Step 6 |
24 | Repair a poor connection at the switch ground. Is the repair complete? | -- | Go to Horns System Check | -- |
25 | Replace the horn switch. Refer to Inflatable Restraint Steering Wheel Module Replacement for service procedure. Is the repair complete? | -- | Go to Horns System Check | -- |
26 | Repair a poor connection or an open in circuit 29 between the underhood accessory wiring junction block connector C3 terminal C8 and the horn connector terminal B. Is the repair complete? | -- | Go to Horns System Check | -- |
