Ford Mustang Service Manual: Principles of Operation
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.
Inspection and Verification
1. Verify the customer concern by operating the system.
2. Visually inspect for obvious signs of mechanical and electrical damage.
Anti-Lock Control - Traction Control (Diagnosis and Testing)
Anti-Lock Control - Traction Control (Diagnosis and Testing)
Refer to Wiring Diagrams Cell 42, Anti-Lock Brake System for schematic and
connector information.
Special Tool(s)
Worldwide Diagno ...
Visual Inspection Chart
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 ...
Other materials:
Wheels and Tires
General Specifications
Torque Specifications
Description
Nm
lb-ft
Wheel nuts
129
95
...
Idle Air Control (IAC) Valve - 3.8L
Electronic Engine Controls (Description and Operation)
The electronic engine controls consist of the following:
powertrain control module (PCM)
throttle position (TP) sensor
idle air control (IAC) valve
engine coolant temperature (ECT) sensor
...
Spark Plugs
Engine Ignition (Description and Operation)
Eight separate ignition coils:
are controlled by the powertrain control module (PCM).
are mounted directly above each spark plug.
are controlled by the powertrain control module for correct firing
sequenc ...