Horn Switch: Testing and Inspection

Horn Switch Test

1. Remove the steering column covers. Service and Repair

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






3. Using a jumper wire, connect the dashboard wire harness 20P connector terminal No. 2 to body ground. The horns should sound.
- If the horns sound, go to step 4.

- If the horns do not sound, check these items:
- No. 11 (15 A) fuse in the main under-hood fuse box.

- Horn Service and Repair

- MICU

- 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 terminal (C) from the driver's airbag.






6. Check for continuity between the dashboard wire harness 20P connector terminal No. 2 and the horn switch 1P terminal.
- If there is continuity, check the installation of the driver's airbag assembly and the steering wheel. If the installation is correct, faulty horn switch; replace the driver's airbag assembly.

- If there is no continuity, repair an open in the wire between the cable reel and the horn switch 1P terminal, if the wire harness is OK, replace the cable reel. Service and Repair