Shorted Communication Line Test
- Remove the driver's multiplex control unit from the driver's under-dash fuse/relay box.
- Carefully pry off the driver's door switch trim (see FRONT DOOR PANEL REMOVAL/INSTALLATION ).
- Disconnect door multiplex connector A (20P).
- Disconnect passenger's multiplex control unit connector B (22P).
- 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
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
- 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.
- NO: Go to step 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
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
- 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).
- NO: Replace driver's multiplex control unit and recheck the symptom.