DTC U0199: Lost Communication with P/W (DR Lock SW Frame)

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A )

Clear the DTCs with the HDS
Turn the ignition switch to LOCK (0) and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode
Wait for 6 seconds or more
Check for DTCs with the HDS
Is DTC U0199 indicated?

YES -Go to step 5

NO -Intermittent failure, the system is OK at this time Check for loose or poor connections between the power seat control unit and the door multiplex control unit
From the BODY ELECTRICAL system select menu, select UNIT INFORMATION, and then select CONNECTED UNIT
Is the power window master switch (door multiplex control unit) detected?

YES -Go to the power seat control unit input test (see POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT )

NO -Go to step 6
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
Disconnect the door multiplex control unit 37P connector
Disconnect power seat control unit connector B (40P)
Check for continuity between power seat control unit connector B (40P) terminals No 39 and No 40 and door multiplex control unit 37P connector terminals No 33 and No 35 individually

Fig 1: Checking Continuity Between Power Seat Control Unit Connector B (40P) And Door Multiplex Control Unit 37P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Replace the door multiplex control unit (see REAR POWER WINDOW SWITCH TEST )

NO -Open or poor connection in the wire between the door multiplex control unit and the power seat control unit