9-3 (9440) L4-2.0L Turbo (2007)
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Starter Motor: Description and Operation
Starter Motor, Detailed Description
The starter motor has permanent magnets to reduce the stress on the battery. The starter motor has a planet gear to increase the starting torque.
The starter motor circuit consists of two sub-circuits:
^
the operating circuit.
^
the working circuit, and;
Working circuit
The working circuit runs from the battery's positive terminal to terminal 30 on the starter motor.
Operation
When the ignition key is turned to start position, the starter relay will be activated provided the immobilization criteria are fulfilled and the control
current circuit to the solenoid, connection 50, will be made. The solenoid engages the pinion with the gear ring on the engine flywheel and closes a
switch so that the starter motor commutator is supplied with voltage via slip brushes from connection 30.
