Ford 2003 Mustang Workshop Manual page 3729

Are the resistances less than 5 ohms?
E8 CHECK CIRCUIT 400 (LB/BK) FOR AN OPEN
Key in OFF position.
Disconnect: CJB Circuit Breaker 43 (20A).
Measure the resistance between driver window regulator control
switch C508 pin 10, circuit 400 (LB/BK), harness side and CJB
circuit breaker 43 (20A) output pin, circuit 400 (LB/BK).
Is the resistance less than 5 ohms?
E9 CHECK THE GEM CONTROL OF THE DRIVER POWER
WINDOW
Key in ON position.
Enter the following diagnostic mode on the diagnostic tool: GEM
Active Command FRONT WINDOW CONTROL.
Trigger DR DOWN ON.
Did the driver window move down?
E10 CHECK THE WINDOW REGULATOR MOTOR OPERATION
Disconnect: Driver Window Regulator Motor C518.
Connect a 20 amp fused jumper wire between battery positive
and one pin of the window regulator motor (component side).
Momentarily connect a jumper wire between the second pin of
Yes
REPAIR the power
supply to CJB circuit
breaker 43 (20A). TEST
the system for normal
operation.
No
REPAIR the circuit.
TEST the system for
normal operation.
Yes
INSTALL a new GEM.
REFER to Section 419-
10 . TEST the system
for normal operation.
No
GO to E10 .
Yes
GO to E11 .
No