Functional description
A temperature-dependent electrical resistor is used for temperature sensing. The circuit contains a voltage divider where the resistance can be measured depending on the temperature. A temperature is converted using a characteristic curve specific to the sensor.
An NTC resistor is installed in the engine compartment temperature sensor and in the engine compartment temperature sensor 2 whose resistance value drops when the temperature increases. The resistance changes from 76 kΩ to 88 Ω temperature-dependent, which corresponds to a temperature of -40 °C to 120 ° C.
The following illustration shows the engine compartment temperature sensor and in the engine compartment temperature sensor 2 using I01 as an example.
| Item | Explanation |
|---|---|
| 1 | Temperature sensor, engine compartment |
| 2 | Temperature sensor 2 of engine compartment |
| 3 | two-pin plug connection |