Ford Mustang (1999-2004) Service Manual: Starting System (Description and Operation)
Starter Motor
The starter motor is a 12-volt unit that has the starter solenoid mounted on the drive end housing and functions as follows:
- The current flows through the solenoid energizing coil until the solenoid plunger is at the end of its travel.
- The plunger closes a set of contacts that bypass the energizing coil, letting the holding coil keep the starter drive engaged and passing starting current to the starter motor.
- The motor is energized when the starter solenoid contacts are closed.
- The starter drive engages the flywheel ring gear and starts the engine.
- An overrunning clutch in the starter drive protects the starter motor from excessive speed when the engine starts.
Starter Relay
The starter interrupt relay consists of:
- pull in coil and contacts
- When the ignition switch is in the START position:
- the pull-in coil is activated and pulls the contacts together.
- current passes through the starter relay from the engine compartment power distribution box to the starter solenoid.
Clutch Pedal Position (CPP) Switch
The CPP switch for:
- a manual transmission closes when the clutch pedal is depressed, completing the starting circuit.
- an automatic transmission is a jumper inserted in place of the CPP switch to complete the circuit.
Starter System - Operation
When the ignition switch is turned to the START position the starter relay switches power to the starter solenoid causing the starter motor to engage as long as:
- the clutch pedal is depressed (manual transmission only).
- the digital transmission range (TR) sensor is in PARK or NEUTRAL (automatic transmission only).
Starting System
General Specifications Torque Specifications ...Starting System (Diagnosis and Testing)
Refer to Wiring Diagrams Cell 20 , Starting System for schematic and connector information. Special Tool(s) Digital Multimeter 105-R0051 or equivalent ...Other materials:
Crash sensors and airbag indicator
WARNING: Modifying or adding equipment to the front end of
your vehicle (including frame, bumper, front end body structure
and tow hooks) may affect the performance of the airbag system,
increasing the risk of injury. Do not modify the front end of your
vehicl ...
Camshaft Lobe Lift
Special Tool(s)
Dial Indicator Gauge with
Holding Fixture
100-002 (TOOL-4201-C) or
equivalent
1. Use a Dial Indicator Gauge with Holding Fixture to measure camshaft
intake/exhaust lobe lift.
Rotate the camshaft and subtract the lowest ...
Cleaning the instrument panel and instrument cluster lens
WARNING: Do not use chemical solvents or strong detergents
when cleaning the steering wheel or instrument panel to avoid
contamination of the airbag system.
Clean the instrument panel and cluster lens with a clean, damp, white,
cotton cloth, then use a clean a ...