Ignition System Inspection (Peak Voltage Measurement Method); Ignition Coil Primary Voltage Inspection - Honda Motorcycle Service Manual

IGNITION SYSTEMS
IGNITION SYSTEM INSPECTION (PEAK
VOLTAGE MEASUREMENT METHOD)
NOTE
If no spark jumps at the plug(s), check all connections for
loose o r poor contact before measuring each peak
voltage.
Use a commercially availble digital multimeter (impedan-
ce IOMRIDCV minimum)
-
The display value differs depending upon the internal
impendance of the multimeter.
If the lmrie diagnostic tester (Model 625) is used, follow
the manufacture's instructions.
Connect the peak voltage adaptor t o the digital multimeter.
TOOL :
PEAK VOLTAGE ADAPTOR 07HGJ-0020100 w i t h
commercially available digital multimeter or IMRlE DIAG-
NOSTIC TESTER (Model 625) i n Australia.
IGNITION COlL PRIMARY VOLTAGE INSPECTION
NOTE
+
Check all system connections before this inspection.
Poor connected connectors can cause incorrect
readings.
-
Make sure that the cylinder compression is normal and
check with the spark plug and plug cap installed correct-
ly. On the models with the transistorized ignition
system, readings measured with the plug cap discon-
nected result in abnormally high peak voltage values.
In case of a multi-cylinder engine, the ignition caused by nor-
mal cylinder spark will result in an unstable cranking speed. In
the same way as ordinary spark test, leave the spark plug in-
stalled in the cylinder head, install a known good spark plug in-
to the plug cap and ground it to the engine.
When no spark jumps at plug and the engine does not start,
however, the system can be checked with the spark plug and
cap installed normally.
Connect the peak voltage adaptor between the ignition coil
primary terminal that goes to the ignition control module
(ICM) and a body ground with the connectors connected.
Refer to the Model Specific manual for the connection o f the
adaptor (polarity).
NOTE
/
.
If the weak v o l t a ~ e is lower than swecifications, recheck
/
peakvoltage with reverse connection. The ignition system
is normal if mesured voltage is over the specifications
with reverse connection.
PEAK VOLTAGE ADAPTOF
SPARK PLUG
/
IGNITION COIL
lPRIMARY WIRE TERMINAL
(Connect edl
I
Date of Issue: March,
1995
o
HONDA MOTOR CO..LTD.
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