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IGNITION SYSTEM
DESCRIPTION
In the capacitor discharged ignition system, the electrical energy generated by the generator charges the
capacitor. This energy is released in a single surge at the specified ignition timing point and the current flows
through the primary side of the ignition coil. A high voltage is induced in the secondary windings of the
ignition coil, resulting in a strong spark between the spark plug gap.
Ignition switch
Engine stop
Regulator/
rectifier
Generator
TROUBLESHOOTING
No spark or poor spark
Check the ignition system couplers for poor
connections.
Correct
Measure the battery voltage between input
lead wires (O/W and B/W) at the CDI unit
with the ignition switch in the "ON" position and
the engine stop switch in the "RUN" position.
Correct
Continued on next page
DC-DC
converter
switch
Ignition power
source circuit
Wave form
arrangement
circuit
CPU
To ignition
switch
Neutral
indicator light
* Make sure the transmission is in the neutral position.
Also, make sure the fuse is not blown and the battery is
fullycharged before diagnosing.
Loose
Incorrect
ELECTRICAL SYSTEM
Ignition coil
Throttle position
sensor
Side stand
switch
Neutral switch
• Improper coupler
connection
• Faulty ignition switch
• Faulty engine stop switch
• Broken wire harness or
poor connection of related
circuit couplers
7-19
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Troubleshooting
