Remote Operation Via Master Switch Is Impossible

REMOTE OPERATION VIA MASTER SWITCH IS IMPOSSIBLE IN THE OTHER DOOR (OPERATION VIA EACH DOOR SWITCH IS POSSIBLE)

CIRCUIT DESCRIPTION

When the ignition switch is ON, the master switch (door ECU) sends a remote switch signal for the other seats multiply to the body ECU, then the body ECU drives the power window motor for the other seats.

NOTE: The power window system has a function with a large-scale multiplex communications. First of all, inspect the communication function depending on the "how to proceed with troubleshooting", and check that there is no abnormality in the communication system. Then finally proceed with the troubleshooting.

Wiring Diagram:

Step 1:

Step 2:

Step 3 - 4:

INSPECTION PROCEDURE