Starting System: Description and Operation

GENERAL INFORMATION

Starting System Components:

The starting system has:
- Ignition switch
- Starter relay
- Transmission range sensor, or Park/Neutral Position switch with automatic transmissions
- Clutch Pedal Position Switch with manual transmissions
- Wiring harness
- Battery
- Starter motor with an integral solenoid

These components form two separate circuits. A high amperage circuit that feeds the starter motor up to 300+ amps, and a control circuit that operates on less than 20 amps.

SYSTEM OPERATION
Bosch And Melco Starters
The Bosch and Melco are permanent magnet starter motors. A planetary gear train transmits power between starter motor and pinion shaft. The fields have six permanent magnets. The Melco is used on 2.5L engines.

Nippondenso Starter
The Nippondenso is a reduction gear-field coil starter motor and is available on 2.4L engine.

Supply Circuit And Control Circuit
The starter system consists of two separate circuits:
- A high amperage supply to feed the starter motor.
- A low amperage circuit to control the starter solenoid.