Horn Switch Test

1.Remove the steering column covers.

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

 

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

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

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

 

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

6.Using a jumper wire, connect the cable reel side 1P connector (C) to body ground.

  • If the horn sounds, replace the driver's airbag assembly.
  • If the horn does not sound, check these items:
    • Cable reel.
    • An open in the wire (cable reel harness).