General Description; Cranking Circuit; Starting Motor Circuit - Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual

6G-2 CRANKING SYSTEM (0.9 kW, 1.2 kW and 1.4 kW Reduction Type)

Cranking Circuit

The cranking circuit consists of the battery, starting motor, ignition switch, and related electrical wiring. These
components are connected electrically.
Only the starting motor will be covered in this section.

Starting Motor Circuit

• The magnetic switch coils are magnetized when the ignition switch is closed.
• The resulting plunger and pinion drive lever movement causes the pinion to engage the engine flywheel gear
and the magnetic switch main contacts to close, and cranking takes place.
• When the engine starts, the pinion over-running clutch protects the armature from excessive speed until the
switch is opened, at which time the return spring causes the pinion to disengage.
1. Pinion drive lever
2. Pinion & Over-running clutch
3. Magnetic switch
4. Hold-in coil
5. Plunger

General Description

6. Magnetic switch Contacts
7. Pull-in coil
8. Return spring
9. Starting motor
10. To distributor
11. M/T : Nothing
A/T : Park/neutral position switch in transmission range switch
(Shift lever switch)
12. Ignition & Starting motor switch
13. Battery