6-14 ELECTRICAL SYSTEM
IGNITION SYSTEM
DESCRIPTION
In the capacitor discharged ignition system, the battery’s electrical energy charges the capacitor. This en-
ergy 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.
TROUBLESHOOTING
W/R
Br
W
Y/W
R
R
O
B/W
W/Bl
B/W
B/W
B/W
Battery
Generator
Regulator/
rectifier
CDI unit
Ignition coil
Spark
Plug
Check the ignition system couplers for poor
connections.
No spark or poor spark
Correct
Correct
Looseness
Continued on next page
• Improper coupler
connection
Measure the battery voltage between input
lead wires (O and B/W) at the CDI unit
with the ignition switch in the “ON” position.
Incorrect • Faulty ignition switch
• Broken wire harness or
poor connection of related
circuit couplers
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