XC70 AWD L6-3.2L VIN 98 B6324S (2009)
Starter Motor: Description and Operation
Function
Function
Engaging the pinion
If the electronic immobilizer check is OK, the engine control module (ECM) (4/46) grounds and powers the starter motor relay (2/35). The relay is then
activated and the control solenoid powered.
The control solenoid's position #2 (50) supplied with power from the relay. This creates a magnetic field in both pull-in and hold-in windings. This
causes the moving steel core to shift. When the core shifts a lever, fixed in the end of the core, presses the starter motor pinion to engage in the ring gear
on the flywheel/flange.
The pull-in winding is grounded through the rotor and carbon brushes. This ground connection is lost when the moving switches close the circuit and the
current passes from the solenoid to the starter motor.
Planetary train
