Horn Switch: Testing and Inspection

Horn Switch Test

NOTE: SRS components are located in this area. Review the SRS component locations Locations, precautions and procedures Service and Repair, before doing repair or servicing.

1. Remove the steering column covers Steering Column Cover Removal/Installation.

2. Disconnect the dashboard wire harness 20P connector (A) from the cable reel (B).





3. Using a jumper wire, connect dashboard wire harness 20P connector terminal No. 10 to body ground. The horn should sound.

- If the horn sounds, go to step 4.
- If the horn does not sound, check these items:
- No. 12 (15 A) fuse in the under-hood fuse/relay box.
- MICU
- Horn Service and Repair.
- An open in the wire.

4. Reconnect the dashboard wire harness 20P connector (A) to the cable reel (B).





5. Remove the driver's airbag assembly Driver's Airbag Replacement, and disconnect the horn switch 1P positive terminal (C) from the cable reel.

6. Using a jumper wire, connect the horn switch 1P positive terminal to body ground. The horn should sound.

- If the horn sounds, check the installation of the driver's airbag assembly and the steering wheel. If OK, replace the driver's airbag assembly.
- If the horn does not sound, repair an open in the wire or replace the cable reel Service and Repair.