Diesel Data: Automotive Repair

Horn Switch Test

Horn Switch Test

1. Remove the steering column covers.




2. Disconnect the dashboard wire harness 5P or 13P connector (A) from the cable reel (B)
3. Using a jumper wire, connect the No. 1 terminal of the dashboard wire harness 5P or 13P connector 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. 16 (15 A) fuse in the under-hood fuse/relay box.
- Horn relay.
- Horn.
- An open in the wire.




4. Reconnect the dashboard wire harness 5P or 13P connector (A) to the cable reel (B)
5. Remove the driver's airbag assembly.
6. Using a jumper wire, connect the 1P connector (C) to body ground.
- If the horn sounds, replace the driver's airbag assembly.
- If the horn does not sound, replace the cable reel.