lemon-mirror:
Home >> Acura >> 2003 >> MDX Base >> Repair and Diagnosis >> Electrical >> Horns >> Horn Switch Test

Horn Switch Test

  1. Remove the dashboard lower cover (see DASHBOARD LOWER COVER REMOVAL/INSTALLATION ).
  2. Remove the steering column covers (see STEERING COLUMN REMOVAL AND INSTALLATION ).
  3. Disconnect the dashboard wire harness B 5P connector (A) from the cable reel (B).
    Fig 1: Disconnecting Dashboard Wire Harness B 5P Connector From Cable Reel
    G03642206Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Connect terminal No. 3 (C) of the dashboard wire harness B 5P connector to ground. The horn should sound.
    • If the horn does not sound, inspect the horn relay circuit.
    • If the horn sounds, go to step 5.
  5. Check for continuity between the cable reel No. 2 terminal and body ground with the horn switch pressed.
    • If there is continuity, the switch is OK.
    • If there is no continuity, go to step 6.
  6. Remove the driver's airbag assembly (see DRIVER'S AIRBAG REPLACEMENT ).
  7. Check for continuity between the cable reel No. 3 terminal (A) and the horn switch positive terminal (B).
    • If there is no continuity, check for continuity of the radio remote switch harness. If the harness is OK, replace the cable reel (see CABLE REEL REPLACEMENT ) and check for proper operation.
    • If there is continuity, go to step 8.
      Fig 2: Checking For Continuity Between Cable Reel No. 3 Terminal And Horn Switch Positive Terminal
      G03642207Courtesy of AMERICAN HONDA MOTOR CO., INC.
  8. Check for continuity between the center of the steering column and ground.
    • If there is continuity, replace the airbag.
    • If there is no continuity, replace the steering column.
· About lemon-mirror