Suzuki 2000 Grand Vitara SQ625 Service Manual page 667

Condition
Motor not running
Starting motor running
but too slow (small torque)
Starting motor running,
but not cranking engine
Noise
Starting motor does not
stop running
Possible Cause
_ Burnt commutator
_ Layer short-circuit of armature
_ Crankshaft rotation obstructed
If battery and wiring are satisfactory,
inspect starting motor
_ Insufficient contact of magnetic switch
main contacts
_ Layer short-circuit of armature
_ Disconnected, burnt or worn commutator
_ Worn brushes
_ Weakened brush springs
_ Burnt or abnormally worn end bush
_ Worn pinion tip
_ Poor sliding of over-running clutch
_ Over-running clutch slipping
_ Worn teeth of ring gear
_ Abnormally worn bush
_ Worn pinion or worn teeth of ring gear
_ Poor sliding of pinion (failure in return
movement)
_ Worn internal or planetary gear teeth
_ Lack of oil in each part
_ Fused contact points of magnetic switch
_ Short-circuit between turns of magnetic
switch coil (layer short-circuit)
_ Failure of returning action in ignition
switch
CRANKING SYSTEM 6G-5
Correction
Replace armature.
Replace.
Repair.
Replace magnetic switch.
Replace.
Repair commutator or
replace armature.
Replace brush.
Replace spring.
Replace bush.
Replace over-running clutch.
Repair.
Replace over-running clutch.
Replace flywheel (M/T) or
drive plate (A/T).
Replace bush.
Replace over-running clutch,
flywheel (M/T) or drive
plate (A/T).
Repair or replace.
Replace.
Lubricate.
Replace magnetic switch.
Replace magnetic switch.
Replace.