Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Remove the horn relay (Relay 15). Do the horns stop sounding? | -- | ||
2 | Monitor the horn relay coil output of the Body Control Module (BCM), using the scan tool. Is the horn relay output low? | -- | ||
3 |
Is the horn relay output low? | -- | ||
4 |
Is the horn relay output low? | -- | ||
5 |
Does the test light illuminate? | -- | ||
6 | Repair a short to ground in circuit 28, between the horn switch and connector C201. Has the repair been made? | -- | Go to Horns System Check | -- |
7 | Replace the horn switch. Refer to Inflatable Restraint Steering Wheel Module Replacement , in SIR Has the repair been made? | -- | Go to Horns System Check | -- |
8 | Disconnect the underhood accessory wiring junction block connector C3. Do the horns stop sounding? | -- | ||
9 | Replace the underhood accessory wiring junction block. Refer to Accessory Wiring Junction Block Replacement , in Body Control Systems. Has the repair been made? | -- | Go to Horns System Check | -- |
10 | Repair a short to B+ in circuit 29. Has the repair been made? | -- | Go to Horns System Check | -- |
11 |
Does the test light illuminate? | -- | ||
12 | Replace the horn relay. Refer to Horn Relay Replacement , in Body Front End. Has the repair been made? | -- | Go to Horns System Check | -- |
13 |
Does the test light illuminate? | -- | ||
14 | Replace the BCM. Refer to Body Control Module Replacement , in Body Control Systems Has the repair been made? | -- | Go to Horns System Check | -- |
15 | Repair a short to ground in circuit 28, between the underhood accessory wiring junction block connector C2 terminal F7 and body control module connector C1, terminal C6 or between underhood accessory wiring junction block connector C2, terminal F7 and inline connector C201 terminal A17. Has the repair been made? | -- | Go to Horns System Check | -- |
