Horn Switch Test

Remove the steering column covers (see STEERING COLUMN REMOVAL AND INSTALLATION ).
Disconnect the dashboard wire harness 5P or 13P connector (A) from the cable reel (B).

Fig 1: Identifying Dashboard Wire Harness 5P And 13P Connector Terminals
Using a jumper wire, connect the dashboard wire harness 5P or 13P connector No. 1 terminal to body ground. The horn should sound.
- If the horn sound, go to step 4.
- If the horns do not sound, check these items: -No. 16 (15 A) fuse in the main under-hood fuse box.
  - Horn (see HORN TEST/REPLACEMENT )
  - An open in the wire.
  - Horn relay
Fig 2: Connecting Dashboard Wire Harness 13P Connector Terminal 1 To Body Ground Using Jumper Wire

Fig 3: Connecting Dashboard Wire Harness 5P Connector Terminal 1 To Body Ground Using Jumper Wire
Reconnect the dashboard wire harness 5P or 13P connector (A) to the cable reel (B).

Fig 4: Identifying Dashboard Wire Harness 13P Connector, Cable Reel And Horn Switch 1P Positive Terminal
Remove the driver's airbag assembly (see DRIVER'S AIRBAG REPLACEMENT ), and disconnect the horn switch 1P positive terminal (C) from the driver's airbag.
Check for continuity between the dashboard wire harness 5P or 13P connector No. 1 terminal and the horn switch 1P positive 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 positive terminal, if the wire harness is OK, replace the cable reel (see CABLE REEL REPLACEMENT ).

Fig 5: Checking Continuity Between Dashboard 13P Connector Terminal 1 And Horn Switch 1P Positive Terminal

Fig 6: Checking Continuity Between Dashboard 5P Connector Terminal 1 And Horn Switch 1P Positive Terminal