Starting System: Description and Operation

INTRODUCTION

Starting System Component:

The starting system has:
- Ignition switch
- Starter relay
- Neutral starting and back-up switch with automatic transmissions only
- 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.

Melco Starter
The Melco is a permanent magnet starter motor and is available on 3.5L engines. A planetary gear train transmits power between starter motor and pinion shaft. The fields have six permanent magnets.

Nippon Denso Starter
The Nippondenso is a reduction gear-field coil starter motor and is available on 3.3L 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.