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Home >> Honda >> 2002 >> Odyssey LX >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Multiplex Control System >> Troubleshooting >> Shorted Communication Line Test
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Shorted Communication Line Test

  1. Remove the driver's multiplex control unit from the driver's under-dash fuse/relay box.
  2. Carefully pry off the driver's door switch trim (see FRONT DOOR PANEL REMOVAL/INSTALLATION ).
  3. Disconnect door multiplex connector A (20P).
  4. Disconnect passenger's multiplex control unit connector B (22P).
  5. Check for continuity between No. 15 terminal of door multiplex connector A (20P) and body ground.
    Fig 1: Checking Continuity Between No. 15 Terminal Of Door Multiplex Connector A (20P) & Body Ground
    G01520246Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES:  Repair short to ground in the wire between door multiplex control unit connector A (20P) and the driver's under-dash fuse/relay box.
    2. NO:  Go to step 6.
  6. Check for continuity between No. 9 terminal of passenger's multiplex connector B (22P) and body ground.
    Fig 2: Checking Continuity Between No. 9 Terminal Of Passenger's Multiplex Connector B (22P) & Body Ground
    G01520247Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES:  Repair short to ground in the wire between passenger's multiplex control unit connector B (22P) and driver's multiplex control unit connector B (22P).
    2. NO:  Replace driver's multiplex control unit and recheck the symptom.
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