Starting Motor Performance Test - Suzuki GRAND VITARA Owner's Manual

Condition
Starting motor running,
but too slow (small
torque) – Battery and
wiring are satisfactory
Starting motor running,
but not cranking engine
Noise
Starting motor does not
stop running

Starting Motor Performance Test

CAUTION
!
Each test must be performed within 3 – 5 seconds to avoid coil from burning.
Pull-In Test
1) Connect battery to magnetic switch as shown.
2) Check that plunger and pinion move outward. If plunger and pinion don't move, replace magnetic switch.
NOTE
Before testing, disconnect lead wire from terminal "M".
Possible cause
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 Replacemagnetic switch.
Short-circuit between turns of magnetic
switch coil (layer short-circuit)
Failure of returning action in ignition
switch
1. Terminal "S" 2. Terminal "M"
Correction / Reference Item
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.
IYSQ01190003-01
3. Lead wire (switch to motor)
Starting System: 1I-3
S5JB0A1904002