Ect Sensor Removal/Installation; Ect Sensor Inspection - Honda TRX500FM Service Manual

PGM·FI SYSTEM
ECT SENSOR
REMOVAUINSTALLATION
Drain the coolant (page 8-6).
Remove the left fuel lank side cover (page 2-5),
Disconnect Ihe spark plug cap [1] and
Eel
sensor 2P
(Black) connector [21.
Replace the ECT Remove Ihe EeT sensor [3J and O-ring 14].
sensor
while
the
&ngine is cok:J.
Install the a new O-ring onto Ihe Eel sensor.
Install Ihe Eel sensor to the cylinder head and lighten
it to the specified torque.
TORQUE: 12 N'm (1.2 kg f-m, 9I bHt)
Connect the Eel sensor 2P (Black) connector and
spark plug cap.
Fill the cooling system with recommended coolant
(page 8-6).
Install the left fuel tank side cover (page 2-5).
INSPECTION
Remove the
Eel
sensor (I] (page 4-32).
Wear;nsulated
Heat Ihe coolant (1:1 mixture) with an electric heating
gloves and
element.
adequate eye
protection.
Keep "ammable
materials away
from
me burner,
Suspend the ECT sensor in heated coolant and check
the continuity through the sensor as the coolant heats
up.
NOTE :
Soak the ECT sensor in coolant up to its metal area
thoroughly with at least 40 mm (1.6 in) from the
bottom of the pan to the bottom of the sensor.
Slowly stir the coolant while heating and keep
temperature constant for 3 minutes before testing. A
121
••
H I
sudden change of temperature will result in incorrect [1]
readings. Do not let the thermometer {2] or ECT L _ _ _ __ '-'-_ _ _ _ _ __ _ __ _
.J
4·32
sensor touch the pan .
Measure the resistance between EeT sensor terminals.
Temperature
Resistance
40
±
5°C (104
±
41 °F)
0.86 1.55 kO
Replace the ECT sensor if it is out of specifications .
Install the ECT sensor (page 4·32).