Engine Coolant Temperature Sensor
FUNCTIONS WITHIN THE SYSTEM
ECM receives the engine coolant temperature signal from the engine coolant temperature sensor and performs various control.
INDIVIDUAL FUNCTION WITHIN THE SYSTEM
The engine coolant temperature sensor is used to detect the engine coolant temperature.
INDIVIDUAL OPERATION
The engine coolant temperature sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
| Temperature [°C (°F)] | Voltage * (V) | Resistance (kΩ) |
|---|---|---|
| -10 (14) | 4.18 - 4.40 | 7.0 - 11.4 |
| 20 (68) | 3.39 - 3.50 | 2.37 - 2.63 |
| 50 (122) | 1.98 - 2.44 | 0.68 - 1.00 |
| 90 (194) | 0.94 - 1.03 | 0.236 - 0.260 |
*: These data are reference values and are measured between ECM terminals.
COMPONENT LOCATION
Engine Coolant Temperature Sensor 1
The engine coolant temperature sensor is installed to the multi-way control valve.
Engine Coolant Temperature Sensor 2
The engine coolant temperature sensor is installed to the radiator.