• Installed on the water bypass tube (directly below the ignition coil).
• The ECT is a thermistor type, the resistance changes according to the engine coolant temperature.
|
1
|
PCM
|
|
2
|
ECT sensor
|
|
3
|
ECT sensor resistance characteristic
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|
4
|
Resistance
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|
5
|
Engine coolant temperature
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|
6
|
Large
|
|
7
|
Small
|
|
8
|
Low
|
|
9
|
High
|
• The resistance decreases if the engine coolant temperature increases, and increases if the engine coolant temperature decreases.
