Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
|
Important: Use the J 35616 Connector Test Adapter Kit when a diagnostic procedure requires inspecting or probing. 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 UA6 theft deterrent option. Is the vehicle equipped with the UA6 theft deterrent option? | -- | Go to Step 2 | Go to Step 3 |
2 | Inspect the vehicle for body control module (BCM) diagnostic trouble codes (DTCs). Refer to Reading DTCs in BCM. Are there any DTCs present? | -- | Go to Body Control Module Diagnostic Information in Body Control System | Go to Step 3 |
3 | Check the HORN fuse for an open. Is the HORN fuse open? | -- | ||
4 |
Is the HORN fuse open again? | -- | ||
5 |
Does the test light illuminate? | -- | ||
6 |
Does the test light illuminate? | -- | ||
7 |
Does the test light illuminate? | -- | ||
8 | Place the horn relay back in the underhood accessory wiring junction block. Is the HORN fuse open again? | -- | ||
9 |
Is the HORN fuse open? | -- | ||
10 | Using a test light, frontprobe between the other horn relay circuit 740 and ground. Does the test light illuminate? | -- | ||
11 |
Does the test light illuminate? | -- | ||
12 |
Does the test light illuminate? | -- | ||
13 | Check for a poor connection at the switch ground in the steering wheel. Is there a poor connection? | -- | ||
14 | Momentarily connect a 5A fused jumper between the horn relay terminals for circuit 29 and circuit 740. Do the horns sound? | -- | ||
15 |
Does the test light illuminate? | -- | ||
16 | With a test light, frontprobe between the horn assembly connector terminal A and B+. Does the test light illuminate? | -- | ||
17 |
Does the test light illuminate? | -- | ||
18 | Replace the underhood accessory wiring junction block. Refer to Accessory Wiring Junction Block Replacement in Body Front End for service procedure. Is the repair complete? | -- | -- | |
19 | Replace the horn relay. Refer to Horn Relay Replacement for service procedure. Is the repair complete? | -- | -- | |
20 | Repair short to ground in circuit 29. Is the repair complete? | -- | -- | |
21 | Repair a short to B+ or an open in circuit 28. Is the repair complete? | -- | -- | |
22 | Replace the horn assembly. Refer to Horn Replacement for service procedure. Is the repair complete? | -- | -- | |
23 | Repair open in circuit 1350. Is the repair complete? | -- | -- | |
24 | Repair poor connection at the switch ground. Is the repair complete? | -- | -- | |
25 | The horn switch is part of the SIR steering wheel module. Refer to Inflatable Restraint Steering Wheel Module Replacement in SIR for service procedure. Is the repair complete? | -- | -- | |
26 | Repair poor connection or open in circuit 29. Is the repair complete? | -- | -- | |
