Honda TRX680FA Service Manual page 521

IGNITION SYSTEM
Remove the right side cover (page 3-5).
Disconnect the alternator 5P (Natural) connector
and connect the peak voltage tester or adaptor
probes to the Blue/yellow and Green/white wire
terminals of the alternator side connector.
5P NATURAL CONNECTOR
In the same manner as at the PCM connector,
measure the peak voltage and compare it to the
voltage measured at the PCM connector.
• If the peak voltage measured at the PCM
connector is abnormal and the one measured at
the alternator connector is normal, the Blue/
yellow or Green/white wire has an open or short
circuit, or loose connection.
• If both peak voltages are abnormal, follow the
checks described in the troubleshooting chart
(page 21-4).
If the CKP sensor is faulty, replace the stator/CKP
sensor assembly (page 11-11).
IGNITION COIL
REMOVAL/INSTALLATION
Remove the left side cover (page 3-6).
Disconnect the plug cap from the plug and free the
spark plug wire from the clamps.
5P (NATURAL) CONNECTOR
(Alternator side of female
terminal)
PEAK VOLTAGE
ADAPTOR
G/W
Bu/Y
Disconnect the ignition coil primary wire connector.
Remove the two mounting bolts, ground terminal
and the ignition coil.
Installation is in the reverse order of removal.
21-7