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SPECIFICATIONS
SECTION 206-
03: Front Disc Brake 2003 Mustang Workshop Manual General Specifications
Item Specification
Disc brake lining wear limit 1.0 mm (0.040 in)
Disc thickness (Mustang/Mustang Cobra) 26 mm (1.02 in)/28 mm (1.10 in)
Disc lateral runout 0.05 mm (0.002 in)
Disc thickness variation 0.009 mm (0.00035 in)
Hub runout 0.025 mm (0.001 in)
Torque Specifications Description Nm lb-
ft Disc brake caliper bolt 31 23
Front brake hose bolt 40 30
Front disc brake caliper anchor plate bolt 115 85
Disc brake caliper bleeder screw 10 7 Klj . 1 ba
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SPECIFICATIONS
SECTION 206-
04: Rear Disc Brake 2003 Mustang Workshop Manual General Specifications
Item Specification
Disc brake lining wear limit 1.0 mm (0.040 in)
Disc thickness 15 mm (0.59 in)
Disc lateral runout 0.102 mm (0.004 in)
Disc thickness variation 0.01 mm (0.0004 in)
Hub runout —
Torque Specifications Description Nm lb-
ft lb-
in Rear wheel brake hose-
to-rear disc brake caliper retaining bolt 40 30 —
Rear disc brake support bracket bolts 103 76 —
Brake disc shield bolts 9-
12 — 80-
106 Rear brake pin retainer 33 25 — Klj . 1 ba
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SPECIFICATIONS
SECTION 206-
05: Parking Brake and Actuation 2003 Mustang Workshop Manual Torque Specifications
Description Nm Lb/Ft
Parking brake control-
to-cowl nut 17 13
Brake hose clip mounting bolt 12 9 Klj . 1 ba
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SPECIFICATIONS
SECTION 206-
06: Hydraulic Brake Actuation 2003 Mustang Workshop Manual Torque Specifications
Description Nm lb-
ft Brake master cylinder nuts 25 19
Brake pedal bracket nuts 25 19
Brake pedal bracket bolt 23 17
Brake fluid control valve 19 15
Hydraulic tube connections 17 13
Brake fluid control valve bracket nut 14 11 Klj . 1 ba
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SPECIFICATIONS
SECTION 206-
07: Power Brake Actuation 2003 Mustang Workshop Manual Torque Specifications
Description Nm lb-
ft Power brake booster nuts 25 19
Brake master cylinder nuts 25 19
Hydraulic tube connections 17 13
Power steering pressure lines 19 14 Klj . 1 ba
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SPECIFICATIONS
SECTION 206-
09A: Anti-Lock Control — Rear 2003 Mustang Workshop Manual Torque Specifications
Description Nm lb-
ft lb-
in Anti-
lock brake control module screws 3 — 26
Brake line fittings to hydraulic control unit 19 14 —
Front anti-
lock brake sensor bolt 7 — 62
Hydraulic control unit to mounting bracket nuts 18 13 —
Rear anti-
lock brake sensor bolt 7 — 62 Klj . 1 ba
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SPECIFICATIONS
SECTION 206-
09B: Anti-Lock Control — Traction Control 2003 Mustang Workshop Manual Torque Specifications
Description Nm lb-
ft lb-
in Anti-
lock brake control module screws 3 — 26
Brake line fittings to hydraulic control unit 19 14 —
Front anti-
lock brake sensor bolt 7 — 62
Hydraulic control unit to mounting bracket nuts 18 13 —
Rear anti-
lock brake sensor bolt 7 — 62 Klj . 1 ba
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DIAGNOSIS AND TESTING
Anti-
Lock Control — Traction Control
Refer to Wiring Diagrams Cell 42 , Anti-
Lock Brake System for schematic and connector information.
Principles of Operation
The anti- lock-brake control module receives wheel speed readings from each anti- lock brake sensor
and processes this information to determine if an ABS event is necessary. The anti- lock brake sensor
electrically senses each tooth of the anti- lock brake sensor indicators as it passes through the anti- lock
brake sensor's magnetic field.
The anti- lock brake control module continuously monitors and compares the rotational speed of each
wheel and, when it detects an impending wheel lock, modulates brake pressure to the appropriate
brake caliper. This is accomplished by triggering the hydraulic control unit (HCU) to open and close the
appropriate solenoid valves. Once the affected wheel returns to normal speed, the anti- lock brake
control module returns the solenoid valves to their normal position, and normal (base) braking
resumes.
The anti- lock brake control module is self- monitoring. When the ignition switch is turned to the RUN
position, the anti- lock brake control module will do a preliminary electrical check, and at approximately
12 km/h (8 mph) the pump motor is turned on for approximately one half- second. Also during all
phases of operation the anti- lock brake control module (after the vehicle is in motion) checks for
correct operation of the anti- lock brake sensors. Any malfunction of the ABS will cause the ABS to shut
off and ABS warning indicator to illuminate; normal power assisted braking, however, remains.
The ABS control module has the ability to store multiple DTCs in memory.
The traction control system controls wheelspin by modulating the engine torque by communicating to
the powertrain control module (PCM) and by applying, then releasing, the appropriate brake to restore
traction when one or both drive wheels lose traction and begin to spin during acceleration.
The traction control system can be disabled by depressing the traction control switch. The traction
control system will reset and return to normal traction assist when the ignition switch is cycled or when
the traction control switch is depressed again. SECTION 206-
09B: Anti-Lock Control — Traction Control 2003 Mustang Workshop Manual Special Tool(s)
Worldwide Diagnostic System
(WDS)
418-
F224,
New Generation STAR (NGS)
Tester
418- F052, or equivalent scan
tool 73 Digital Multimeter or
equivalent
105-
R0051 Klj . 1 ba
202003 Mustang Workshop Manual
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