Pinpoint Test B: A Single Power Window Is Inoperative - LH Front Window
WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
- B1 CHECK THE POWER WINDOW DOWN OPERATION
- Key in OFF position.
- Disconnect: LH Front Window Motor C524
- Key in ON position.
- While operating the LH front window control switch, measure the voltage between LH front window motor C524-2, circuit CPW11 (BU/GY), harness side and LH front window motor C524-1, circuit CPW10 (YE/VT), harness side.
- Is the voltage greater than 10 volts while operating the LH front window control switch in the down direction?
- YES : INSTALL a new window regulator and motor. REFER to Window Regulator - Front Door . TEST the system for normal operation.
- NO : Go to B2.
- B2 CHECK CIRCUITS CPW11 (BU/GY) AND CPW10 (YE/VT) FOR AN OPEN
- Key in OFF position.
- Disconnect: LH Front Window Control Switch C504a
- Measure the resistance between LH front window control switch C504a-5, circuit CPW11 (BU/GY), harness side, and LH front window motor C524-2, circuit CPW11 (BU/GY), harness side; and between LH front window control switch C504A-1, circuit CPW10 (YE/VT), harness side, and LH front window motor C524-1, circuit CPW10 (YE/VT), harness side.
- Are the resistances less than 5 ohms?
- YES : INSTALL a new LH front window control switch. REFER to Window Control Switch . TEST the system for normal operation.
- NO : REPAIR the circuit(s) in question. TEST the system for normal operation.