Test B: A Single Power Window Is Inoperative - Driver Front Window

PINPOINT TEST B: A SINGLE POWER WINDOW IS INOPERATIVE - DRIVER FRONT WINDOW

Normal Operation
Under normal operation, the driver window control switch provides power to the power window motor through circuit 991 (TN/LB) and ground through 992 (WH/BK) to operate the driver window upward and power through circuit 992 (WH/BK) and ground through 991 (TN/LB) to operate the driver window downward.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Driver window control switch
- Driver power window motor

B1-B3:

B3-B4: