Starting System: Description and Operation
STARTERBosch 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 Bosch is used on 2.0L engines and 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.
Starting System Schematic:
The starting system has:
- Ignition switch
- Starter relay
- Clutch Pedal Position Switch with manual transmissions Powertrain Control Module (PCM)
- 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 controls the starter solenoid and operates on less than 20 amps.
The Powertrain Control Module (PCM) controls a double start over ride safety that does not allow the starter to be engaged if the engine is already running.