Ford 2003 Mustang Workshop Manual page 660

Is the resistance less than 5 ohms?
PINPOINT TEST J: THE YELLOW ABS WARNING INDICATOR DOES
NOT SELF-CHECK
J1 CHECK THE ABS WARNING INDICATOR CIRCUITRY
Key in OFF position.
Disconnect: Anti-Lock Brake Control Module C135.
Key in ON position.
Depress and release the shorting bar connector
internal to the anti-lock brake control module C135,
harness side, while checking the yellow ABS warning
indicator in the instrument cluster.
Does the yellow ABS indicator illuminate with the
shorting bar released and turn OFF with the
shorting bar depressed?
PINPOINT TEST K: SPONGY BRAKE PEDAL WITH NO WARNING
INDICATOR
Test Step
K1 CHECK THE VEHICLE COMPONENTS
Check the brake pedal and power
booster/brake master cylinder for correct
attachment.
Are the components OK?
K2 BLEED THE BRAKE SYSTEM
Bleed the brake system; Refer to
206-00 .
Check for spongy brake pedal.
Is the brake pedal spongy?
PINPOINT TEST L: POOR VEHICLE TRACKING DURING ANTI-LOCK
Test Step
Section
No
REPAIR the circuit. CLEAR
the DTCs. REPEAT the self-
test.
Result / Action to Take
Yes
INSTALL a new anti-lock brake
control module; REFER to
Module . TEST the system for
normal operation.
No
REFER to
Result / Action to Take
Yes
GO to K2 .
No
REPAIR as necessary. TEST the system for
normal operation.
Yes
INSTALL a new HCU; REFER to
Control Unit . TEST the system for normal
operation.
No
The brake system is OK. TEST the system
for normal operation.
Section 413-01 .
Hydraulic