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Horn Switch Test

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 Honda Odyssey, 2016 Honda Odyssey, 2015 Honda Odyssey, 2014 Honda Odyssey, and 2013 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • SRS Components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ), and precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or servicing.
  • Check for blown No. A9 (20 A) fuse in the main under-hood fuse box. If it is blown, check for a faulty horn relay (see POWER RELAY TEST ); faulty horn, or short in horn circuit.
  1. Turn the steering wheel 180° from the center position and remove the cover (A).
    Fig 1: Identifying Horn Switch 2P Connector With Cover
    G06968743Courtesy of AMERICAN HONDA MOTOR CO., INC.
  2. Disconnect the horn switch 2P connector (B).
  3. Connect horn switch 2P connector terminals No. 1 and No. 2 with a jumper wire. The horns should sound.
    • If the horns sound, check or adjust the installation of the horn switch plate.
    • If the horns do not sound, go to step 4.
  4. Remove the jumper wire from the horn switch 2P connector.
  5. Remove the steering column covers (see COLUMN COVER REMOVAL/INSTALLATION ).
  6. Remove the driver's airbag assembly (see DRIVER'S AIRBAG REPLACEMENT ).
  7. Connect cable reel connector C (20P) terminals No. 19 and No. 20 with a jumper wire. The horns should sound.
    • If the horns sound, check the cruise control combination switch (see CRUISE CONTROL COMBINATION SWITCH TEST/REPLACEMENT ), if switch is OK, replace the cable reel sub-harness.
    • If the horns do not sound, go to step 8.
      Fig 2: Identifying Cable Reel Connector C (20P) Terminals
      G06968744Courtesy of AMERICAN HONDA MOTOR CO., INC.
  8. Disconnect the cable reel connector A (20P).
    Fig 3: Identifying Cable Reel Connector A (20P) Terminals
    G06968745Courtesy of AMERICAN HONDA MOTOR CO., INC.
  9. Connect cable reel connector A (20P) terminals No. 9 and No. 10 with a jumper wire. The horns should sound.
    • If the horns sound, replace the cable reel (see CABLE REEL REPLACEMENT ).
    • If the horns do not sound, repair an open in terminal No. 9 or No. 10 wire, or a faulty relay control module.
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