Sym RV 250i User Manual

17. Electrical System
17-3
Troubleshooting
No voltage
y Battery discharged
y The cable disconnected
y The fuse is blown
y Improper operation of the main switch
y Low voltage
y The battery is not fully charged
y Poor contact
y Poor charging system
y Poor voltage regulator
No spark produced by spark plug
y The spark plug is out of work
y The cable is poorly connected, open or
short-circuited
y Poor connection between ECU and ignition coil
y Poor connection between ECU and the main
switch
y Poor main switch
y Poor ECU.
y A.C.G. is out of work
Starter motor does not work
y The fuse is blown
y The battery is not fully charged
y Poor main switch
y Poor starter switch
y The front and rear brake switches do not
operate correctly
y Starter relay is out of work
y The ignition coil is poorly connected, open or
short-circuited
y The starter motor is out of work
Intermittent power supply
y The connector of the charging system becomes
loose
y Poor connection of the battery cable
y Poor connection or short-circuit of the
discharging system
y Poor connection or short-circuit of the power
generation system
Charging system does not operate
properly
y Burnt fuse
y Poor contact, open or short circuit
y Poor regulator rectifier
y Poor ACG
Engine does not crank smoothly
y Primary winding circuit
- Poor ignition coil
- Poor connection of cable and connectors
- Poor main switch
y Secondary winding circuit
- Poor ignition coil
- Poor spark plug
- Poor ignition coil cable
- Current leakage in the spark plug
y Incorrect ignition timing
- Poor ACG
- Improper installation of CPS
- Poor ECU
Weak starter motor
y Poor charging system
y The battery is not fully charged
y Poor connection in the windings
y The motor gear is jammed by foreign material
Starter motor is working, but engine does
not crank
y Poor starter motor pinion
y The starter motor runs in reverse direction
y Poor battery
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Sym RV 250i Specifications

General

Brand	Sym
Model	RV 250i
Category	Scooter
Language	English