Ford 2003 Mustang Workshop Manual page 3738

G5 CHECK DRIVER WINDOW REGULATOR CONTROL SWITCH
Disconnect: Driver Window Regulator Control Switch C537.
Carry out the driver window regulator control switch component test.
REFER to Wiring Diagrams Cell 149, Component Testing.
Is the driver window regulator control switch OK?
PINPOINT TEST H: THE DEFROST SYSTEM IS INOPERATIVE
H1 CHECK POWER TO INDICATOR LIGHT
Key in ON position.
Depress the rear window defrost switch to ON.
Is the rear window defrost switch indicator ON?
H2 CHECK CIRCUIT 186 (BR/LB) FOR AN OPEN
Key in OFF position.
Disconnect: Heated Rear Window Relay.
Disconnect: Heated Rear Window Grid Power Supply
Connector C402a.
Measure the resistance between heated rear window relay,
circuit 186 (BN/LB), harness side and heated rear window
grid C402a, circuit 186 (BN/LB), harness side.
Is the resistance less than 5 ohms?
H3 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS)
Refer to the results from the previous instrument cluster
module (ICM) self-test.
Was DTC B1343 retrieved?
Test Step
Yes
INSTALL a new
rear window
regulator motor.
REFER to Motor—
Window Regulator,
Quarter in this
section. TEST the
system for normal
operation.
No
INSTALL a new
driver window
regulator control
switch. REFER to
Switch—Window
Regulator Control
this section. TEST
the system for
normal operation.
Result / Action to Take
Yes
GO to H2 .
No
GO to H3 .
Yes
GO to H7 .
No
REPAIR the circuit. TEST
the system for normal
operation.
Yes
GO to H4 .
in