7-10 COOLING AND LUBRICATION SYSTEM
ECT SENSOR
REMOVAL
• Remove the frame covers. ($8-10)
• Remove the thermostat case. ($7-11)
• Disconnect the ECT sensor coupler

1.
• Remove the ECT sensor

2.
INSPECTION
• Check the ECT sensor by testing it at the bench as shown in
the figure. Connect the ECT sensor

1 to a circuit tester and
place it in the oil

2 contained in a pan, which is placed on a
stove.
• Heat the oil to raise its temperature slowly and read the col-
umn thermometer

3 and the ohmmeter.
# ECT sensor specification
• If the ECT sensor ohmic value does not change in the propor-
tion indicated, replace it with a new one.
!
Temperature Standard resistance
20 °C (68 °F) Approx. 2.45 kΩ
50 °C (122 °F) Approx. 0.811 kΩ
80 °C (176 °F) Approx. 0.318 kΩ
110 °C (230 °F) Approx. 0.142 kΩ
* Take special care when handling the ECT sensor. It
may cause damage if it gets a sharp impact.
* Do not contact the ECT sensor and the column ther-
mometer with a pan.
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