Test B: Single Power Window Is Inoperative - Driver Front Window
PINPOINT TEST B: SINGLE POWER WINDOW IS INOPERATIVE - DRIVER FRONT WINDOWB1-B2:
B2-B4:
B4-B5:
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 downward and power through circuit 992 (WH/BK) and ground through 991 (TN/LB) to operate the driver window upward.
Possible Causes
- Open in circuits 991 (TN/LB) or 992 (WH/BK)
- Inoperative driver window control switch
- Inoperative driver power window motor