PNK Wire Communication Line Test

Disconnect driver's multiplex control unit connector B (22P).
Disconnect passenger's multiplex control unit connector B (22P).
Check for continuity between B1 terminal of the driver's multiplex connector B (22P) and B9 terminal of the passenger's multiplex connector B (22P).
DRIVER'S MULTIPLEX CONTROL UNIT CONNECTOR B (22P)

Fig 1: Checking For Continuity Between B1 Terminal Of Driver's Multiplex Connector B (22P) And B9 Terminal Of Passenger's Multiplex Connector B (22P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Replace the multiplex control unit most closely related to the failure.

NO - Repair an open in the wire between the driver's multiplex control unit connector B (22P) and the passenger's multiplex control unit connector B (22P).