Driver's Side Power Window Does Not Operate

Driver's Side Power Window Does Not Operate

CIRCUIT DESCRIPTION
Master switch assembly (door ECU) controls the driver's side power window by itself and drive the driver's side power window motor.

NOTE: Power window system has a function with a large-scale body multiplex communication. First of all, Inspect the communication function depending on "how to proceed with troubleshooting" and confirm that the communication system has no abnormality, then finally perform the troubleshooting.

Wiring Diagram:

Steps 1 - 3:

Steps 4 - 5:

Step 5 (continued):

INSPECTION PROCEDURE