Starting System: Description and Operation

Starting System

Overview
The starter motor is rated as a 1.8 kW and is a Denso level 3-sealed unit. It is an RA type starter motor, which is of the offset design with the solenoid being directly behind the pinion to give a more positive engagement to the ring gear. The motor is geared directly to the pinion. Each starter motor is of the pre-engaged type and comprises a series wound motor and an overrunning clutch. This starter incorporates labyrinth-breathing tubes to help with sealing and drainage.
The starter solenoid is energized by a signal from the ECM (engine control module) when the ignition switch is moved to the crank position. When engine cranking is requested, the ECM (engine control module) checks that a valid key code has been received before granting the crank request.
The power for starter operation is supplied on a substantial single cable connected direct from the battery positive terminal. The cable is connected to the solenoid via a copper threaded stud with an anti-rotational device and secured with a nut.
The starter motor is located on the rear RH (right-hand) side of the engine block. The motor is secured to the block and protrudes through an aperture to drive the flywheel via a ring gear.