Test B: A Single Power Window Is Inoperative - LH

PINPOINT TEST B: A SINGLE POWER WINDOW IS INOPERATIVE - LH

B1-B4:

B4:

Normal Operation
The LH front window control switch receives power from the central junction box (CJB) through circuit 170 (RD/LB) and is grounded through circuit 57 (BK). When the LH front window control switch is pressed to the up position, battery voltage is sent to the LH front window regulator motor through circuit 226 (WH/BK) and ground through circuit 227 (YE). The window regulator motor will move the window glass up. When the LH front window control switch is pressed to the down position, battery voltage is sent to the LH front window regulator motor through circuit 227 (YE) and ground through circuit 226 (WH/BK). The window regulator motor will move the window glass down.

Possible Causes
- LH front window motor
- LH front window control switch
- Open in circuits 170 (RD/LB), 226 (WH/BK) or 227 (YE)