Ford 2003 Mustang Workshop Manual page 693

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?
K3 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: Trigger must be depressed twice.
Each depress runs the pump motor for two
seconds.
Have an assistant rotate the LF wheel
immediately after depressing trigger.
Does the LF wheel rotate?
K4 CHECK THE RF ABS VALVE OPERATION
NOTE: Trigger must be depressed twice.
Each depress runs 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?
K5 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?
K6 CHECK THE LR ABS VALVE OPERATION
NOTE: Trigger must be depressed twice.
Each depress runs 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 LR
wheel while the pump motor is running.
Does the LR wheel rotate?
K7 CHECK THE LR ABS VALVE RELEASE
Apply moderate brake pedal effort.
Trigger the anti-lock brake control module
active command LR INLET and LR OUTLET.
NOTE: The scan tool will energize the valves
for only two seconds per trigger press.
Have an assistant rotate the LR wheel
immediately after depressing trigger.
Does the LR wheel rotate?
GO to K3 .
Yes
GO to K4 .
No
GO to K10 .
Yes
INSTALL a new HCU; REFER to
Hydraulic Control Unit . TEST the system
for normal operation.
No
GO to K5 .
Yes
GO to K6 .
No
GO to K10 .
Yes
INSTALL a new HCU; REFER to
Hydraulic Control Unit . TEST the system
for normal operation.
No
GO to K7 .
Yes
GO to K8 .
No
GO to K10 .