Exciter Coil - Honda Motorcycle Service Manual

IGNITION SYSTEMS
EXCITER COIL
CONNECTOR C,ONNECTORS OF ICM SIDE
To avoid possible electrical shock during voltage
1
' measurements, do not touch the tester probe metal
parts.
NOTE
Install the spark plug(s) into
measure the peak voltage under normal cylinder
compression.
Disconnect the connectors from the ignition control module
(ICM) and connect the peak voltage adaptor probes t o the
exciter coil wire terminal of the harness side eonnector and
ground. connector
Crank the engine with the kick starter or starter motor and
measure the peak voltage of the exciter coil.
If the peak voltage measured at the ignition control module
connector is abnormal, disconnect the nearest connector t o
the exciter coil and connect the adaptor probes to the exciter
coil wire terminal and ground.
In the same way as at the ignition control module connector,
recheck the peak voltage and compare it to the voltage
EXCITER
~
.
~
measured at the ignition control module.
NOTE
connected t o the ignition
control module, the test points will be on t h e same
potential thus not allowing a value comparison.
If there are connectors between the ignition control
module and exciter coil, it is possible to check the wire
harness for open circuit or loose connections by compar-
ing the peak voltage measured at different points. If no
defects are found in the harness after checking it com-
pletely, the peak voltage is abnormal.
Refer to the Model Specific manual for the specified peak
voltage and the connection of the adaptor probes.
Ifthe peakvoltage measured atthe ignition control module
is abnormal and the one measured at the exciter coil is
normal, the wire harness has an open ciruit or loose
connections.
If both peak voltages measured are abnormal, check each
item in the troubleshooting chart. If all items are normal, the
exciter coil is faulty.
Date of Issue: March.1995
o
HONDA MOTOR CO.,LTD.
23-1
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