Service Information; Troubleshooting - KYMCO Downtown 200i Service Manual

17. IGNITION SYSTEM

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 17-2.
• The ignition timing cannot be adjusted since the ignition control module is already adjusted in factory.
• The ignition control module or ECU maybe damaged if dropped or the connector is disconnected when the
key is ON
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 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.
SPECIFICATIONS
Spark plug
Spark plug gap
Inductive Ignition Coil
Throttle Position Sensor
Fuel Pump
Fuel Injector
Water Temperature Sensor
Oxygen Sensor ( engine warming condition )
Crank Position Sensor
Roll Sensor

TROUBLESHOOTING

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 crank position sensor.
• Faulty ignition control module.
Peak voltage is normal, but no spark jumps at the plug
• Faulty spark plug or leaking ignition coil secondary current.
• Faulty ignition coil.
, the excessive voltage may damage the ignition control module or ECU. Always turn
Item
Standard type
Primary coil
Secondary coil without plug cap
DOWNTOWN 200i
Standard
NGK CR7E
0.6 ~ 0.7 mm
3.57~4.83
10.42~14.49 K
3500~6500
1.9 about
9.945~13.5
2.076K 10% (25 )
6.7 ~9.5
100~130
0.4V~1.4V(normal)
3.7V~4.4V (fall down)
17-2