ELECTRICAL SYSTEM 8-17
IGNITION SYSTEM
TROUBLESHOOTING
Spark plug
Ignition
coil
DC-DC
converter
Ignition power
source circuit
Wave form
arrangment
circuit
CPU
Driver
SCR
C
CDI unit
Wave form
arrangment
circuit
Engine
stop switch
Fuse
Ignition
switch
Fuse
Battery
Generator
Bl
G
Y
W
Transfer
switch
Parking
brake
switch
Neutral/
parking
switch
Correct
Continued on next page
• Improper coupler connection
• Faulty ignition switch
• Faulty engine stop switch
• Broken wire harness or poor
connection of related circuit
couplers
No spark or poor spark
Check ignition system couplers for poor
connections.
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.
Inorrect
Looseness
Make sure the transfer is in the neutral position
and the engine stop switch is in the “RUN” position.
Also, make sure the fuse is not blown and the
battery is fully-charged before diagnosing.
Correct
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