Kymco MO X500 Service Manual - chap 18 (imp accensione)
18. IGNITION SYSTEM
XCITING 500
18
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IGNITION SYSTEM
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IGNITION SYSTEM LAYOUT------------------------------------------- 18-1
SERVICE INFORMATION------------------------------------------------ 18-2
TROUBLESHOOTING----------------------------------------------------- 18-2
IGNITION COIL INSPECTION ------------------------------------------ 18-4
IGNITION CONTROL MODULE ---------------------------------------- 18-5
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18-0
18. IGNITION SYSTEM
IGNITION SYSTEM LAYOUT
XCITING 500
IGNITION CIRCUIT
18-1
18. IGNITION SYSTEM
XCITING 500
SERVICE INFORMATION
GENERAL INSTRUCTIONS
● Some electrical components may be damaged if terminals or connectors are connected or
disconnected while the ignition switch is “ON” and current is present.
● When servicing the ignition system, always follow the steps in the troubleshooting on page ???.
● The ignition timing cannot be adjusted since the ignition control module is factory preset.
● The ignition control module may be damaged if dropped. Also, if the connector is disconnected
when current is flowing, the excessive voltage may damage the ignition control module. Always
turn off the ignition switch before servicing.
● A faulty ignition system is often related to poor connections. Check those connections before
proceeding.
● Make sure the battery is adequately charged. Using the starter motor with a weak battery results in
a slower engine cranking speed as well as no spark at the spark plug.
● Use a spark plug of the correct heat range. Using spark plug with an incorrect heat range can
damage the engine.
● See section 12 for ignition pulse generator removal/installation.
● See section 20 for following components:
ä Ignition switch
ä Engine stop switch
SPECIFICATIONS
Item Standard
Spark plug NGK-CR8E
Spark plug gap 0.7 mm (0.028 in)
Ignition system Full transistor digital ignition
Ignition timing TPS
TROUBLESHOOTING
LOW PEAK VOLTAGE
● Cranking speed is too low (battery is undercharged).
● Poorly connected connectors or an open circuit in the ignition system.
● Faulty ignition-coil.
● Faulty ignition control module.
NO PEAK VOLTAGE
● Short circuit in engine stop switch or ignition switch wire.
● Faulty engine stop switch or ignition switch.
● Loose or poorly connected ignition control module connectors.
● Open circuit or poor connection in ground wire of the ignition control module.
● Faulty ignition pulse generator.
● Faulty ignition control module.
18-2
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