Ignition Pulse Generator - Honda Motorcycle Service Manual

IGNITION SYSTEMS
IGNITION PULSE GENERATOR
NOTE
.
Install the spark plugls) into the cylinder head and
measure the peak voltage under normal cylinder
compression.
Disconnect the connectors from the ignition control module
(ICM) and connect the peak voltage adaptor probes to the
ignition pulse generator wire terminal of the wire harness side
connector and ground. Crank the engine with the kick starter
or starter motor and measure the peak voltage of the ignition
pulse generator.
Refer to the Model Specific manual for the specified peak
voltage and the connection of the adaptor probes.
/
.
To avoid ~ossible electrical shock during v o l t a ~ e
/
-
measurements.
do not touch the tester probe metal
If the peak voltage measured at t h e unit connector is
abnormal, disconnect the nearest connector to the ignition
pulse generator and connect the adaptor probes t o the
ignition pulse generator wire terminal and ground.
In the same way as at the unit connector, recheck the peak
voltage and compare
it
to the voltage measured at the
ignition control module.
NOTE
to the ignition control module, the test points will be on
the same potential thus not allowing a value compari-
.
If there are connectors between the ignition control
module and ignition pulse generator, it is possible t o
check the wire harness for open circuit or loose connec-
tions by comparing the peak voltage measured at differ-
ent points. If no defects are found in the harness after
!
checking it completely, the peak voltage is abnormal.
.
On the models equipped with two or more ignition pulse
generator, various voltage may differ. As long as the
measured voltages exceed the specified value, the sys-
tem is normal.
If the peak voltage measured at the ignition control module
is abnormal and the one measured at the ignition pulse
generator is normal, the wire harness has an open circuit or
loose connections.
If both peak voltages measured are abnormal, check each
item in the troubleshooting chart. If all items are normal.
the ignition pulse generator is faulty.
1
CONNECTORS OF ICM SIDE
I i
i n
IGNITION PULSE GENERATOR
Date of issue: March, 1995
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HONDA MOTOR CO..LTD.