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Home >> Acura >> 2009 >> RDX >> Repair and Diagnosis >> Electrical >> Horns >> Horn Switch Test

Horn Switch Test

  1. Remove the steering column covers (see COLUMN COVER REMOVAL/INSTALLATION ).
  2. Disconnect the cable reel 20P connector (A) from the dashboard wire harness.
    Fig 1: Identifying Cable Reel 20P Connector
    G05446412Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Using a jumper wire, connect the No. 1 terminal of the dashboard wire harness 20P connector to body ground.
    • If the horns sound, go to step 4.
    • If the horns don't sound, check these items:
      • No. 12 (15 A) fuse in the under-hood fuse/relay box.
      • MICU
      • Horns
      • An open in the wire.
  4. Reconnect the cable reel 20P connector (A) to the dashboard wire harness.
    Fig 2: Identifying Cable Reel 20P Connector For Dashboard Wire Harness
    G05446413Courtesy of AMERICAN HONDA MOTOR CO., INC.
  5. Remove the driver's airbag assembly (see DRIVER'S AIRBAG REPLACEMENT ), and disconnect the horn switch 1P terminal (B) from the cable reel (C).
  6. Using a jumper wire, connect the cable reel side 1P connector (C) to body ground.
    • If the horns sound, replace the driver's airbag assembly.
    • If the horns do not sound, check these items:
      • Cable reel.
      • An open in the wire (cable reel subharness).