myroad700 Workshop-manual : Page 346

          19. IGNITION SYSTEM                                                                     MYROAD 700i


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 19-5.
 The ignition timing cannot be adjusted since the ignition control module is factory preset.
 The ignition control module or ECU may be damaged if dropped. Also, if the connector is
  disconnected when current is flowing, the excessive voltage may damage the ignition control
  module or ECU. 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.

  SPECIFICATIONS
                            Item                                        Standard
                         Spark plug                                    NGK-CR8E
  Spark plug gap                                          0.6~0.7 mm
  Ignition system                                         Full transistor digital ignition
  Ignition timing                                         Throttle position sensor

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.

PEAK VOLTAGE IS NORMAL, BUT NO SPARK JUMPS AT THE PLUG
 Faulty spark plug or leaking ignition coil secondary current.
 Faulty ignition coil.




19-1