Starting System: Description and Operation

Starting System

COMPONENT LOCATION





OVERVIEW
The starter motor rated at 1.4 kW uses permanent magnets instead of field windings to provide a low-weight starter motor; with the use of planetary gears to deliver a good torque to weight ratio.
The starter relay is energized by a signal from the engine control module (ECM) when the ignition is in engine crank mode. The ECM checks that a valid code has been received before granting the engine crank mode request. When the request is granted the starter relay energizes the starter solenoid to engage the starter motor's pinion with the flexplate's ring gear. Once the engine has started and engine speed exceeds starter motor speed the pinion disengages to prevent over-cranking of the starter motor.
The electrical power for starter operation is supplied via a cable connected directly from the battery positive terminal to the solenoid.