Honda 2005-2008 RX500 FA Service Manual page 459

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'61HN252' by American Honda Motor Co. - Page 459 of 540

[2005-2008] [TRX500 FA/FGA]

ENGINE COOLANT TEMPERATURE

(ECT) SENSOR

Drain the coolant from the engine

Remove the air intake duct

(page 6-10).

Disconnect the connector and remove the engine

coolant temperature (ECT) sensor.

Suspend the ECT sensor in a pan of coolant (1:1

mixture) on an electric heating element and mea-

sure the resistance through the sensor as the cool-

ant heats up.

· Soak the ECT sensor in coolant up to its threads

with at least 40 mm (1.57 in) from the bottom of

the pan to the bottom of the ECT sensor.

· Keep the temperature constant for 3 minutes

before testing. A sudden change of temperature

will result in incorrect readings. Do not let the

thermometer or ECT sensor touch the pan.

80°C (176°F)

Replace the ECT sensor if it is out of specifications

by more than 10% at any temperature listed.

Apply locking agent to the ECT sensor threads. Do

not apply to the sensor head.

Install and tighten the ECT sensor.

TORQUE: 10 N·m (1.0 kgf·m, 7 lbf·ft)

Connect the ECT sensor connector.

Install the air intake duct

(page 6-12).

Fill and bleed the cooling system

http://services.honda.com/ServiceManual/SVC_MNL/61HN253/61HN2...

LIGHTS/METERS/SWITCHES

120°C (248°F)

3/9/2008 11:24 PM

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