Ignition System Inspection; Ignition Coil Primary Peak Voltage - Honda 2010 CRF250R Service Manual

ELECTRICAL SYSTEM
IGNITION SYSTEM INSPECTION
Avoid touchmg the
spark plug and
tester probes
10
prevent electric
shock.
If there is no spark at the plug, check all connections , - - - - - -- - - - - - - - - - -
for loose or poor contact before measuring each DIGITAL MULTIMETER
peak voltage. (impedance 10 MOIDCV
Use the recommended digital multimeter or a
~
minimum)
commercially available digital multimeter with an
impedance of 10 MOIOCV minimum.
The display value differs depending upon the
internal impedance of the multimeter.
!
V )
Connect the peak vollage tester (lgnilionMate. U.S.A.
only) or peak vollage adapter to the digital multimeter.
TOOLS:
Ignition Mate peak voltage tester TMNTS91 H
(U.S.A. only) or
Peak voltage adaptor 07HGJ-0020100
(not available in
U.S.A.)
with commercially available digital multimeter
(impedance 10 Mn/DCV minimum)
IGNITION COIL PRIMARY PEAK
VOLTAGE
Check aJi system connections before inspection.
If the system is disconnected , incorrect peak voltage
PEAK VOLTAGE ADAPTOR
might be measured , /
Check cylinder compression and check that the spark
~-~
plug is installed correctly.
Disconnect the DLC/fuel pump sub harness 4P (Red)
connector.
Shift the transmission into neutral.
~;;~;;~;;;4;P;(£R: E ~ ~ I ~ C~O~NNECTOR~
Connect a known-good spark plug to the spark plug cap
and ground the spark plug to the cylinder as done in a
spark test.
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