Ford 2003 Mustang Workshop Manual page 3721

control switch C537 pin 14, circuit 1205 (BK), harness
side and ground.
Is the resistance less than 5 ohms?
PINPOINT TEST C: ALL POWER WINDOWS ARE INOPERATIVE —
COUPE
C1 CHECK THE POWER SUPPLY TO THE WINDOW
REGULATOR CONTROL SWITCH
Key in OFF position.
Disconnect: Driver Window Regulator Control Switch
C508.
Key in ON position.
Measure the voltage between driver window regulator
control switch C508 pin 10, circuit 400 (LB/BK), harness
side and ground.
Is the voltage greater than 10 volts?
C2 CHECK CIRCUIT 1205 (BK) FOR AN OPEN
Measure the resistance between driver window regulator
control switch C508 pin 14, circuit 1205 (BK), harness
side and ground.
Test Step
INSTALL a new driver window
regulator control switch.
REFER to Switch—Window
Regulator Control in this
section. TEST the system for
normal operation.
No
REPAIR the circuit. TEST the
system for normal operation.
Result / Action to Take
Yes
GO to C2 .
No
REPAIR the circuit. TEST the
system for normal operation.
Yes
INSTALL a new driver window
regulator control switch.
REFER to Switch—Window
Regulator Control in this
section. TEST the system for
normal operation.
No
REPAIR the circuit. TEST the
system for normal operation.