Pinpoint Test B - Power Windows Completely Inoperative

With ignition off, disconnect master window switch connector located on left front door trim panel. With ignition on, measure battery voltage on Light Green/Yellow wire at master window switch connector. See Fig 1 . If battery voltage is greater than 10 volts, go to next step. If NOT, repair Light Green/Yellow wire and/or Orange/Black wire of master window switch connector. Go to next step.

With ignition off, disconnect master window switch connector located on left hand front door trim panel. Measure resistance between wire terminals on master window switch. See the MASTER WINDOW SWITCH RESISTANCES table.

Fig 1: Master Window Switch Terminals ID

Courtesy of FORD MOTOR CO.

MASTER WINDOW SWITCH RESISTANCES

Control Switch	Switch Position	Terminal	Ohms
L	Up	1-7	Less Than 5
"	Normal	1-8	Less Than 5
"	Down	2-1	Less Than 5
"	"	2-8	Less Than 5
"	"	1-8	Less Than 5
"	One-Touch	3-2	Less Than 5
"	"	3-1	Less Than 5
"	"	3-8	Less Than 5
"	"	2-1	Less Than 5
"	"	2-8	Less Than 5
"	"	1-8	Less Than 5
R	Up	8-6	Less Than 5
"	"	7-5	Less Than 5
"	Normal	8-6	Less Than 5
"	"	8-5	Less Than 5
"	"	6-5	Less Than 5
"	Down	8-5	Less Than 5
"	"	7-6	Less Than 5
LOCK	ON	"	"
"	OFF	8-6	Less Than 5

If master window switch resistances are not as specified, replace master window switch. If resistances are okay, repair Black wire between master window switch and ground. Go to next test.