Door Multiplex Control Unit
- Remove driver's door trim panel enough to gain access to door multiplex control unit connector. See DOOR TRIM PANEL
under REMOVAL & INSTALLATION. Turn ignition off. Disconnect door multiplex control unit Blue 20-pin connector. See Fig 1
. Ensure connector terminals are okay and making proper contact. Repair connector terminals as necessary and retest system. If connector terminals are okay, go to next step.
- Using a voltmeter, probe between door multiplex control unit Blue 20-pin connector terminal No. 1 (White/Yellow wire) and ground. See Fig 1
. See DOOR MULTIPLEX CONTROL UNIT CONNECTOR TERMINAL
IDENTIFICATION table. If battery voltage exists, go to next step. If battery voltage does not exist, check fuse No. 56 (7.5-amp), located in fuse/relay box, under instrument panel. If fuse is okay, check for open in White/Yellow wire.
- Turn ignition on. Using a voltmeter, probe between door multiplex control unit Blue 20-pin connector terminal No. 2 (Green/White wire) and ground. If battery voltage exists, go to next step. If battery voltage does not exist, check fuse No. 17 (20-amp), located in fuse/relay box, under instrument panel. If fuse is okay, check for open in Green/White wire.
- Turn ignition off. Using an ohmmeter, probe between door multiplex control unit Blue 20-pin connector terminals No. 12 (Black wire) and No. 19 (Black wire) and ground. If continuity does not exist, check for an open in Black wire and/or bad ground connection. If wires and ground connections are okay, replace power window master switch.
Courtesy of AMERICA HONDA MOTOR CO., INC. DOOR MULTIPLEX CONTROL UNIT CONNECTOR TERMINAL ID
| Terminal (Wire Color) |
Circuit |
| 1 (WHT/YEL) |
Battery Voltage Input |
| 2 (GRN/WHT) |
Power Window Relay Input |
| 3 (RED/BLK) |
Master Switch Light - Power |
| 4 (BLU) |
Window Motor Pulse Input |
| 5 (GRN/BLU) |
Door Switch Input |
| 6 (GRN/WHT) |
Key Cylinder Switch UNLOCK |
| 7 (BLU/WHT) |
Knob Switch LOCK |
| 8 (GRN/RED) |
Lock Switch UNLOCK |
| 10 (RED/BLU) |
Window Motor Control |
| 11 (RED/YEL) |
Window Motor Control |
| 12 (BLK) |
Ground |
| 13 (RED) |
Master Switch Light GROUND |
| 14 (BLU/BLK) |
Trunk Opener Switch Input |
| 15 (BRN/YEL) |
Door "D" Line |
| 16 (GRN/RED) |
Key Cylinder Switch LOCK |
| 17 (GRN/BLK) |
Knob Switch UNLOCK |
| 18 (GRN/WHT) |
Lock Switch LOCK |
| 19 (BLK) |
Ground |
| 20 (GRY/BLK) |
Main Switch Output |