Ford 2003 Mustang Workshop Manual page 661

FUNCTION
Test Step
L1 BLEED THE BRAKE SYSTEM
Bleed the brake system. Refer to
206-00 .
Check for vehicle tracking poorly.
Does the vehicle track poorly?
L2 CHECK THE LF ABS VALVE OPERATION
Lift the vehicle and rotate all the wheels to
make sure they rotate freely (the vehicle must
be in neutral).
NOTE: Trigger must be depressed twice.
Each press will run the pump motor for two
seconds.
Trigger the anti-lock brake control module
active command PMP MOTOR ON for four
seconds.
Apply moderate brake pedal effort.
Have an assistant attempt to rotate the LF
wheel while the pump motor is running.
Does the LF wheel rotate?
L3 CHECK THE LF ABS VALVE RELEASE
Apply moderate brake pedal effort.
Trigger the anti-lock brake control module
active command LF INLET and LF OUTLET.
NOTE: The scan tool will energize the valves
for only two seconds per trigger press.
Have an assistant rotate the LF wheel
immediately after depressing trigger.
Does the LF wheel rotate?
L4 CHECK THE RF ABS VALVE OPERATION
NOTE: Trigger must be depressed twice.
Each press will run the pump motor for two
seconds.
Trigger the anti-lock brake control module
active command PMP MOTOR ON for four
seconds.
Apply moderate brake pedal effort.
Have an assistant attempt to rotate the RF
wheel while the pump motor is running.
Does the RF wheel rotate?
L5 CHECK THE RF ABS VALVE RELEASE
Apply moderate brake pedal effort.
Trigger the anti-lock brake control module
active command RF INLET and RF OUTLET.
NOTE: The scan tool will energize the valves
for only two seconds per trigger press.
Have an assistant rotate the RF wheel
immediately after depressing trigger.
Does the RF wheel rotate?
L6 CHECK THE REAR ABS VALVE OPERATION
NOTE: Trigger must be depressed
twice.Each press will run the pump motor for
Yes
Section
GO to L2
No
The brake system is OK. TEST the
system for normal operation.
Yes
INSTALL a new HCU; REFER to
Hydraulic Control Unit
for normal operation.
No
GO to L3
Yes
GO to L4
No
GO to L8
Yes
INSTALL a new HCU; REFER to
Hydraulic Control Unit
for normal operation.
No
GO to L5
Yes
GO to L6
No
GO to L8
Yes
INSTALL a new HCU; REFER to
Result / Action to Take
.
. TEST the system
.
.
.
. TEST the system
.
.
.