Honda TRX450R Service Manual page 474

IGNITION SYSTEM (After 05)
TRX450ER:
TRX450R:
IGNITION PULSE GENERATOR PEAK
VOLTAGE
NOTE:
• Check the cylinder compression and check that
the spark plug is installed correctly.
Disconnect the 8P and 6P black connector from the
ICM.
Connect the peak voltage tester or adaptor probes
to the ignition pulse generator wire terminals of the
8P and 6P black connector.
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 MS2/DCV minimum)
CONNECTION:
Blue/yellow terminal (+) - Green/white terminal (-)
Shift the transmission into neutral.
Crank the engine with the starter motor and read the
ignition pulse generator peak voltage.
Crank the engine with the kickstarter and read the
ignition pulse generator peak voltage.
PEAK VOLTAGE: 0.7 V minimum
If the peak voltage measured at the ICM connector is
abnormal, measure the peak voltage at the ignition
pulse generator connector.
Remove the right front fender (page 3-6).
Disconnect the ignition pulse generator 2P black
connector and connect the tester probes to the Blue/
yellow (+) and Green (-) wire terminals of the igni-
tion pulse generator side 2P black connector.
In the same manner as at the ICM connector, mea-
sure the peak voltage and compare it to the voltage
measured at the ICM connector.
• If the peak voltage measured at the ICM is abnor-
mal and the one measured at the ignition pulse
generator is normal, the wire harness has an
open or short circuit, or loose connection.
• If both peak voltages are abnormal, follow the
checks described in the troubleshooting chart
(page 22-4).
8P CONNECTOR
IGNITION PULSE GENERATOR 2P CONNECTOR
22-8