Ford 2003 Mustang Workshop Manual page 3728

E6 CHECK CIRCUIT 226 (WH/BK) FOR A SHORT TO BATTERY
Key in OFF position.
Disconnect: GEM C201a.
Measure the voltage between GEM C201a pin 2, circuit 226
(WH/BK), harness side and ground.
Key in ON position.
Measure the voltage between GEM C201a pin 2, circuit 226
(WH/BK), harness side and ground.
Is either voltage greater than 10 volts?
E7 CHECK CIRCUIT 991 (TN/LB) AND 992 (WH/BK) FOR AN
OPEN
Key in OFF position.
Disconnect: GEM C201c.
Measure the resistance between driver window regulator control
switch C508 pin 6, circuit 991 (TN/LB), harness side and GEM
C201a pin 3, circuit 991 (TN/LB), harness side.
Measure the resistance between driver window regulator control
switch C508 pin 13, circuit 992 (WH/BK), harness side and
GEM C201c pin 14, circuit 992 (WH/BK), harness side.
window regulator control
switch. REFER to
Switch—Window
Regulator Control in this
section. TEST the
system for normal
operation.
Yes
REPAIR the circuit.
TEST the system for
normal operation.
No
GO to E7 .
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.