Ect Sensor Inspection - Honda GL1800 Service Manual

ECT SENSOR INSPECTION

Remove both radiators (page 6-8).
Remove the twelve intake manifold bolts and raise
the manifold to access the ECT sensor.
Disconnect the ECT sensor connector.
Remove the ECT sensor and sealing washer from
the left cylinder head.
Suspend the ECT sensor in a pan of coolant (1:1
Keep all flammable
mixture) on an electric heating element and mea-
materials away
sure the resistance between the thermosensor ter-
from the electric
minal and body as the coolant heats up.
heating element.
Wear protective
clothing, insulated
• Soak the ECT sensor in coolant up to its threads
gloves and eye
with at least 40 mm (1.57 in) from the bottom of
protection.
the pan to the bottom of the 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.
Temperature
Resistance
Replace the ECT sensor if it is out of specifications
by more than 10% at any temperature listed.
Install the ECT sensor with a new sealing washer
and tighten it.
TORQUE: 25 N·m (2.5 kgf·m, 18 lbf·ft)
Connect the ECT sensor connector.
Install the removed parts.
Fill and bleed the cooling system (page 6-6).
80° C 120° C
(176° F) (248° F)
47 – 57 14 – 18
LIGHTS/METERS/SWITCHES
CT S NSOR
S ALING WASH R
CT S NSOR
HERMOSENSOR ERMINAL
CT S NSOR
S ALING WASH R
20-23