Driver's Multiplex Control Unit-To-Passenger's Multiplex Control Unit
- Turn ignition off. Remove driver's underdash fuse/relay box. See DRIVER'S UNDERDASH FUSE/RELAY BOX under REMOVAL & INSTALLATION. Remove driver's multiplex control unit from driver's underdash fuse/relay box. Remove passenger's underdash fuse/relay box. See PASSENGER'S UNDERDASH FUSE/RELAY BOX under REMOVAL & INSTALLATION. Remove passenger's door multiplex control unit from passenger's underdash fuse/relay box. Go to next step.
- Disconnect all multiplex control unit connectors. Check continuity in Pink wire between terminal B1 of driver's multiplex control unit 22-pin harness connector and terminal B9 of passenger's multiplex control unit 22-pin harness connector. See Figure andFigure . If continuity exists, go to next step. If continuity does not exist, repair open in Pink wire. After repairs, recheck DTCs.
- Reconnect driver's multiplex control unit to driver's underdash fuse/relay box, and passenger's multiplex control unit to passenger's underdash fuse/relay box. Reconnect all multiplex control unit connectors. Turn ignition on. Measure voltage in Pink wire between terminal B1 of driver's multiplex control unit 22-pin harness connector and terminal No. 9 of passenger's multiplex control unit 22-pin harness connector. Voltage should be 3.5-9.5 volts. If voltage is as specified, communication line between driver's multiplex control unit and passenger's multiplex control unit is okay, check system sleep and wake-up mode functions. Go to SLEEP & WAKE-UP FUNCTION . If voltage is not as specified, go to next step.
- If voltage is more than 9.5 volts, check for short to power or faulty connection at receiving multiplex control unit. If voltage is less than 3.5 volts, check for short to ground or faulty connection at transmitting multiplex control unit. If circuit and connector are okay, check for malfunctioning transmitting multiplex control unit. Repair as necessary. After repairs, recheck DTCs.