17. ELECTRICAL SYSTEM
17-3
Trouble Diagnosis
No voltage
z Battery discharged
z The cable disconnected
z The fuse is blown
z Improper operation of the main switch
Low voltage
z The battery is not fully charged
z Poor contact
z Poor charging system
z Poor voltage regulator
No spark produced by spark plug
z The spark plug is out of work
z The cable is poorly connected, open or
short-circuited
- Between AC.G. and C.D.I.
z Poor connection between C.D.I. and
ignition coil
- Poor connection between C.D.I. and the
main switch
z Poor main switch
z Poor C.D.I.
z AC.G. is out of work
Starter motor does not work
z The fuse is blown
z The battery is not fully charge
z Poor main switch
z Poor starter switch
z The front and rear brake switches do not
operate correctly
z Starter relay is out of work
z The ignition coil is poorly connected, open
or short-circuited
z The starter motor is out of work
Intermittent power supply
z The connector of the charging system
becomes loose
z Poor connection of the battery cable
z Poor connection or short-circuit of the
discharging system
z Poor connection or short-circuit of the
power generation system
Charging system does not operate
properly
• Burnt fuse
• Poor contact, open or short circuit
• Poor regulator
• Poor ACG
Engine does not crank smoothly
z Primary winding circuit
- Poor ignition coil
- Poor connection of cable and
connectors
- Poor main switch
z Secondary winding circuit
- Poor ignition coil
- Poor spark plug
- Poor ignition coil cable
- Current leakage in the spark plug
z Incorrect ignition timing
- Poor AC.G.
- Improper installation of the pulse sensor
- Poor C.D.I.
Weak starter motor
z Poor charging system
z The battery is not fully charged
z Poor connection in the windings
z The motor gear is jammed by foreign
material
Starter motor is working, but engine
does not crank
z Poor starter motor pinion
z The starter motor run in reverse direction
z Poor battery
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