9-20
ELECTRICAL SYSTEM
IGNITION SYSTEM
ECM
CKP
sensor
Waveform
arrangement
circuit
Waveform
CMP
arrangement
sensor
circuit
NOTE:
The fuel cut-off circuit is incorporated in this ECM in order to prevent over-running of engine. When engine
speed reaches 14 500 r/min, this circuit cuts off fuel at the fuel injector. But under no load, the clutch lever is
pulled or the gear position is neutral, this circuit cuts off fuel when engine speed reaches 14 100 r/min.
Under no load, the engine can run over 14 100 r/min though the ignition cut-off circuit is effec-
tive, which may possibly cause engine damage. Do not run the engine without load over 15 100
r/min at anytime.
Power source
circuit
CPU
TP
ECT
GP
sensor
sensor
switch
Engine stop switch
Side-
stand
#1
relay
#2
Fuse
Ignition
#3
switch
Fuse
#4
Battery