Ckp Sensor Peak Voltage - Honda TRX500FM Service Manual

IGNITION SYSTEM
Seal the PCMlECM
connecfor
with
tape
/0
prevent
dirt and
oil from en/enng Ihe
ronneclor after
disconnecting
il.
5-6
With the connector connected, connect the peak
voltage tester or adaptor probes to the ignition coil
primary terminals.
Connection: Green/yellow (+) - Black/red
H
Turn the ignition switch ON and engine stop switch
-ct.
Check the initial voltage al this time.
The battery voltage should be measured.
If the initial voltage cannot be measured, follow the
checks in the troubleshooting chart (page 5-4).
Shift the transmission into neutral.
Crank the engine with the starter motor and read the
ignition coil primary peak voltage.
PEAK VOLTAGE: 100 V minimum
If the peak voltage is lower than the standard value,
follow the checks described in the troubleshooting chart
(page 5-4).
CKP SENSOR PEAK VOLTAGE
NOTE:
Check that the cylinder compression is normal and
the spark plug is installed correctly in the cylinder
head.
Remove the rear fender cover (page 2-9).
Turn the ignition switch
OFF
and disconnect the PCM!
ECM 33P (Gray) connector [1].
NOTE:
When reconnecting the PCM!ECM connector, check
that there is no dirt and oil in the connector.
Connect the peak voltage tester or adaptor
[1]
probes to
the wire harness side PCM/ECM 33P (Gray) connector
[2J
terminals
Connection:
B23 (Blue/yellow) (+) - B12 (Green /white) (-)
TOOL:
Test probe
07ZAJ-RDJA110
Shift the transmission into neutral.
Tum the ignition switch ON.
Crank the engine with the starter motor and measure
the CKP sensor peak voltage.
PEAK VOLTAGE: 0.7 V minimum
If the voltage measured at the PCM/ECM connector is
abnormal, measure the peak vo!tage at the a!ternator
connector.
Canada type shown"
121 912{-)
823 (+)
[1)