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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 (NTC) is installed in the charge-air temperature sensor, 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.

G11650738Courtesy of BMW OF NORTH AMERICA, INC.

Example B47

Item Explanation
1 Charge-air temperature sensor
2 Charge air pipe
3 two pin plug connection