6-10
COOLING
AND
LUBRICATION
SYSTEM
ECT SENSOR
REMOVAL
Drain the engine coolant. (-2-18)
Disconnect the ECT sensor lead wire coupler.
Place a rag under the ECT sensor and remove the ECT sen-
sor
@.
INSPECTION
Check the ECT sensor by testing it at the bench as shown in
the figure. Connect the ECT sensor
@
to a circuit tester and
place it in the WATER contained in a pan, which is placed on
a stove.
Heat the water to raise its temperature slowly and read the
column thermometer
a
and the ohmmeter.
If the ECT sensor ohmic valve does not change in the propor-
tion indicated, replace it with a new one.
Temperature sensor specification
Temperature Standard resistance
I
I
If the resistance noted to show infinity or too much different
20 "C (68 OF)
40 "C (104 OF)
60 "C (140 OF)
80 "C (176 OF)
resistance value, replace the ECT sensor with a new one.
Approx. 2.45
kR
Approx. 1.148
kQ
Approx. 0.587
kR
Approx. 0.322
kR
CAUTION
I
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
thermometer with a pan.
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