Ford 2003 Mustang Workshop Manual page 3730

the window regulator motor and ground.
Reverse the jumper wires on the window regulator motor.
Did the window regulator motor operate in both directions?
E11 CHECK CIRCUIT 992 (WH/BK) FOR AN OPEN BETWEEN
THE DRIVER WINDOW MOTOR AND THE WINDOW REGULATOR
CONTROL SWITCH
Disconnect: Driver Window Regulator Control Switch C508.
Measure the resistance between driver window regulator control
switch C508 pin 13, circuit 992 (WH/BK), harness side and
driver window motor C518, circuit 992 (WH/BK), harness side.
Is the resistance less than 5 ohms?
E12 CHECK CIRCUIT 226 (WH/BK) FOR AN OPEN
Disconnect: GEM C201a.
Measure the resistance between GEM C201a pin 2, circuit 226
(WH/BK), harness side and driver window motor C518, circuit
226 (WH/BK), harness side.
Is the resistance less than 5 ohms?
E13 CHECK CIRCUIT 400 (LB/BK) FOR AN OPEN TO THE GEM
Key in OFF position.
Disconnect: CJB Circuit Breaker 43 (20A).
Measure the resistance between GEM C201a pin 4 circuit 400
(LB/BK), harness side and CJB circuit breaker 43 (20A) output
pin, circuit 400 (LB/BK).
INSTALL a new window
regulator motor. REFER
to Motor—Window
Regulator in this
section. TEST the
system for normal
operation.
Yes
GO to E12 .
No
REPAIR the circuit.
TEST the system for
normal operation.
Yes
GO to E13 .
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
REPAIR the circuit.
TEST the system for
normal operation.