Ignition System Inspection; Ignition Coil Primary Peak Voltage - Honda TRX450R Service Manual

ELECTRICAL ('04 - '05)
IGNITION SYSTEM INSPECTION
If using the peak
voltage tester
(U.S.A. only), follow
the manufacturer's
instruction.
NOTE:
• If there is no spark at the spark plug, check all
connections for loose or poor contact before
measuring each peak voltage.
• If using the peak voltage adaptor, use a commer-
cially available digital multimeter with an imped-
ance of 10 Mii/DCV minimum.
• The display value differs depending upon the
internal impedance of the multimeter.
Connect the peak voltage adaptor to the digital mul-
timeter, or use the peak voltage tester (U.S.A. only).
TOOLS:
IgnitionMate peak voltage tester
MTP07-0286
(U.S.A. only) or
Peak voltage adaptor 07HGJ-0020100
(Not available in U.S.A.)
with commercially available digital multimeter
(impedance 10 Mii/DCV minimum)
IGNITION COIL PRIMARY PEAK VOLTAGE
NOTE:
• Check all system connections before inspection.
If the system is disconnected, incorrect peak volt-
age might be measured.
• Check the cylinder compression and check that
the spark plug is installed correctly.
Remove the right front fender (page 3-6).
Disconnect the spark plug cap from the spark plug.
Connect a known good spark plug to the spark plug
cap and ground it to the cylinder head as done in a
spark test.
DIGITAL MULTIMETER
PEAK VOLTAGE ADAPTOR
With the ignition coil primary wire connected, con-
nect the peak voltage tester or adaptor probes to the
ignition coil primary terminal and body ground.
TOOLS:
IgnitionMate peak voltage tester
MTP07-0286
(U.S.A. only) or
Peak voltage adaptor 07HGJ-0020100
(Not available in U.S.A.)
with commercially available digital multimeter
(impedance 10 MQ/DCV minimum)
CONNECTION:
Black/yellow terminal (-) - Body ground (+)
KNOWN GOOD SPARK PLUG
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