ELECTRICAL
SYSTEM
8-17
IGNITION SYSTEM
ECM
NOTE:
The fuel cut-off circuit is incorporated in this ECM in order to prevent over-running of engine. When engine
speed reaches
16
000
r/min. this circuit cuts off fuel at the fuel injector.
TROUBLESHOOTING
No
spark
or
poor
spark
NOTE:
Check that the transmission is in neutral and the engine stop switch is in the
"RUNWposition. Grasp the
clutch lever. Check that the fuse is not blown and the battery
Is fully-charged before diagnosing.
Step
1
1)
Check the ignition system couplers for poor connections.
Is there connection
in
the ignition system couplers?
YES
]GO
to step
2.
NO
I
Poor connection of couplers
Step
2
1)
Measure the battery voltage between input lead wires
(OM
and BNV) at the
ECM
with the ignition switch
in the
"ON"
position.
Is
the voltage OK?
YES
NO
Go to
Step
3.
Faulty ignition switch
Faulty engine stop switch
Broken wire harness or poor connection of related circuit couplers
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