Horn Switch Test

Remove the steering column covers (see STEERING COLUMN REMOVAL AND INSTALLATION ).
Disconnect the cable reel 13P or [20P] connector (A) from the dashboard wire harness.
[ ] : '06-08 models with navigation

Fig 1: Identifying Cable Reel 13P Or [20P] Connector Terminal From Dashboard Wire Harness
Using a jumper wire, connect the No. 1 or [No. 11] terminal of the dashboard wire harness 13 P or [20P] connector to body ground.
[ ] : '06-08 models with navigation
- If the horns sound, go to step 4.
- If the horns don't sound, check these items:
  - No. 13 (20 A) fuse in the under-hood fuse/relay box.
  - Relay module in the under-hood fuse/relay box.
  - Horns (see HORN TEST/REPLACEMENT ).
  - An open in the wire.
Reconnect the cable reel 13P or [20P] connector (A) to the dashboard wire harness.
[ ] : '06-08 models with navigation

Fig 2: Identifying Cable Reel Connectors
Remove the driver's airbag assembly (see DRIVER'S AIRBAG REPLACEMENT ), and disconnect the horn switch 1P positive terminal from the cable reel (B).
Using a jumper wire, connect the cable reel side 1P connector (C) to body ground.
- If the horns sound, replace the horn switch plate.
- If the horns don't sound, replace the cable reel.