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Charge air pressure/charge air sensor (3)
The charge air pressure and temperature are mea- sured via a combined sensor positioned on the inlet pipe.
The charge air pressure sensor measures absolute pressure, which is the sum of charge air pressure and atmospheric pressure. The sensor supplies the control unit with a voltage signal proportional to the absolute pressure. The sensor receives a reference signal of 5 Volts from the control unit.
The charge air temperature sensor comprises a non- linear resistor, where the resistance is dependant on the temperature of the resistor body. The resistance drops as temperature rises.