Ford Mustang Service Manual: Starter Drive and Flywheel Ring Gear Inspection
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).
Component Tests
Inspection and Verification
WARNING: When servicing starter motor or carrying out other underhood
work in the
vicinity of the starter motor, be aware that the heavy gauge battery input lead
at the s ...
Relay Switch
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 fl ...
Other materials:
Cleaning the interior
WARNING: Do not use cleaning solvents, bleach or dye on the vehicle’s
safety belts, as these actions may weaken the belt webbing.
WARNING: On vehicles equipped with seat-mounted airbags, do not use chemical
solvents or strong detergents. Such products cou ...
Negative and Positive Camber
Negative and Positive Camber
Camber is the vertical tilt of the wheel (1007) when viewed from the front.
Camber can be positive or
negative and has a direct effect on tire wear.
Caster
Item
Part Number
Description
1
-
Positive caster
...
Module
Anti-Lock Control
Refer to Wiring Diagrams Cell 42 , Anti-Lock Brake for schematic and
connector information.
Special Tool(s)
Worldwide Diagnostic System
(WDS)
418-F224,
New Generation STAR (NGS)
Tester
418-F052, or equivalent scan
tool ...