Pinpoint Test D: A Single Power Window Is Inoperative, LH Front - Fusion, MILAN

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

D1 CHECK THE LH FRONT POWER WINDOW MOTOR
- Disconnect: LH Front Window Control Switch C504A and C504B.
- Key in ON position.
- Connect a fused jumper wire between LH front window control switch C504A-5, circuit CPW11 (BU/GY), harness side and LH front window control switch C504A-2, circuit CPW30 (GY/YE), harness side. Connect a second fused jumper wire between LH front window control switch C504A-1, circuit CPW10 (YE/VT) and LH front window control switch C504B-7, circuit GD126 (BK/WH). The LH front window should operate in the UP direction.
  
  Fig 1: Checking LH Front Power Window Motor (1 Of 2)
  Courtesy of FORD MOTOR CO.
- Connect a fused jumper wire between LH front window control switch C504A-1, circuit CPW10 (YE/VT), harness side and LH front window control switch C504A-2, circuit CPW30 (GY/YE), harness side. Connect a second fused jumper wire between LH front window control switch C504A-5, circuit CPW11 (BU/GY) and LH front window control switch C504B-7, circuit GD126 (BK/WH). The LH front window should operate in the DOWN direction.
  
  Fig 2: Checking LH Front Power Window Motor (2 Of 2)
  Courtesy of FORD MOTOR CO.
- Does the LH front window operate correctly?
Yes : INSTALL a new LH front window control switch. REFER to WINDOW CONTROL SWITCH . TEST the system for normal operation.

No : GO to D2.
D2 CHECK FOR OPEN IN CIRCUIT CPW10 (YE/VT) OR CPW11 (BU/GY)
- Key in OFF position.
- Disconnect: LH Front Window Motor C518.
- Measure the resistance between LH front window motor C518-1, circuit CPW11 (BU/GY), harness side and LH front window control switch C504A-5, circuit CPW11 (BU/GY), harness side; and between LH front window motor C518-2, circuit CPW10 (YE/VT), harness side and LH front window control switch C504A-1, circuit CPW10 (YE/VT), harness side.
  
  Fig 3: Checking For Open In Circuit CPW10 (YE/VT) Or CPW11 (BU/GY)
  Courtesy of FORD MOTOR CO.
- Are the resistances less than 5 ohms for both measurements?
Yes : INSTALL a new LH front window motor. REFER to GLASS, FRAMES AND MECHANISMS - EXPLODED VIEW, FRONT DOOR and WINDOW REGULATOR AND MOTOR - FRONT DOOR . TEST the system for normal operation.

No : Repair the circuit in question. TEST the system for normal operation.