Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
|
Important: A short to ground will cause an open fuse(s). Before performing this diagnostic procedure, inspect the fuse(s) for an open. | ||||
1 | Did you perform the Horns System Check? | -- | Go to Step 2 | Go to Horns System Check |
2 |
Does the test lamp light? | -- | Go to Step 10 | Go to Step 3 |
3 |
Does the horn sound? | -- | Go to Step 4 | Go to Step 5 |
4 | Replace the faulty relay. Is the repair complete? | -- | Go to Horns System Check | -- |
5 | Use a fused jumper in order to backprobe the underhood wiring harness junction block between terminal C12 of connector C3 and ground. Does the horn sound? | -- | Go to Step 7 | Go to Step 6 |
6 | Replace the underhood wiring harness junction block. Refer to Relay/Fuse Center Replacement in Wiring Systems. Is the repair complete? | -- | Go to Horns System Check | -- |
7 | Use the J 39200 Digital Multimeter (DMM) in order to backprobe the turn/headlamp switch assembly between terminal A of connector C2 and ground. Does the voltage measure to the specified value? | B+ | Go to Step 9 | Go to Step 8 |
8 | Repair the open in CKT 28 between the underhood wiring harness junction block and the turn/headlamp switch assembly. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Horns System Check | -- |
9 | Repair the open in the horn switch. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement in SIR. Is the repair complete? | -- | Go to Horns System Check | -- |
10 |
Does the test lamp light? | -- | Go to Step 11 | Go to Step 12 |
11 |
Does the test lamp light? | -- | Go to Step 13 | Go to Step 14 |
12 | Repair the open in CKT 29 between the underhood wiring harness junction block and the horn assembly. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Horns System Check | -- |
13 | Replace the horn assembly. Refer to Horn Replacement Is the repair complete? | -- | Go to Horns System Check | -- |
14 | Repair the open in CKT 1350 between the horn assembly and ground splice pack G101. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Horns System Check | -- |
