LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 2012 >> CR-Z Base, Standard Trans >> Repair and Diagnosis >> Electrical >> Horns >> Horn Switch Test
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Horn Switch Test

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 performing repairs or servicing.
  • Check for a blown No. B24 (10 A) fuse in the under-dash fuse/relay box. If it is blown, check for a faulty horn relay.
  1. Turn the steering wheel 180 degrees from the center position and remove the cover (A).
    Fig 1: Identifying Wire Side Of Female Terminals, Cover And Horn Switch 1P Connector
    G06953947Courtesy of AMERICAN HONDA MOTOR CO., INC.
  2. Disconnect the horn switch 1P connector (B).
  3. Connect the horn switch 1P connector terminal No. 1 and body ground with a jumper wire.
    • If the horns does not sound, go to step 4.
    • If the horns sound, go to step  11.
  4. Remove the jumper wire from the horn switch 1P connector.
  5. Remove the driver's airbag assembly (see DRIVER'S AIRBAG REPLACEMENT ).
  6. Disconnect the cable reel subharness 20P connector (A) to the cable reel.
    Fig 2: Identifying Cable Reel Subharness 20P Connector Terminals
    G06953948Courtesy of AMERICAN HONDA MOTOR CO., INC.
  7. Check for continuity between the cable reel subharness 20P connector terminal No. 20 and horn switch 1P connector terminal No. 1.
    • If there is continuity, go to step 8.
    • If there is no continuity, repair an open in the wire or faulty cruise control combination switch.
  8. Remove the steering column covers (see STEERING COLUMN REMOVAL AND INSTALLATION ).
  9. Disconnect the dashboard wire harness 20P connector (A) from the cable reel (B).
    Fig 3: Identifying Dashboard Wire Harness 20P Connector Terminals And Cable Reel
    G06953949Courtesy of AMERICAN HONDA MOTOR CO., INC.
  10. Connect the dashboard wire harness 20P connector terminal No. 10 and body ground with a jumper wire. The horns should sound.
    • If the horns does not sound, check these items. If OK, faulty MICU.
      • Horn.
      • Horn relay, horn diode.
      • An open or high resistance in the wire.
    • If the horns sounds, replace the cable reel (see CABLE REEL REPLACEMENT ).
  11. Remove the driver's airbag assembly (see DRIVER'S AIRBAG REPLACEMENT ).
  12. Check the installation of the driver's airbag assembly and the steering wheel. If OK, replace the driver's airbag assembly (see DRIVER'S AIRBAG REPLACEMENT ).
scientia non olet · About LEMON Manuals