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5 CF65/75/85 series ≥0E621376 Description of components COMPONENTS 2-7 Inspection The engine oil level sensor can be checked with a multimeter set to the resistance range. The resistance value is between 20.5 and 23.5 Ohms, measured at 20_C. The maximum current strength of 200mA may not be exceeded when the resistance value is measured. 2.5 PRESSURE SENSORS The vehicle has a number of pressure sensors, such as: - Pressure sensor to record bellows pressure for ECAS. - Pressure sensor on the air supply unit. There is a diaphragm made of semi-conducting material (silicon) in the pressure sensor. When pressure is applied to the diaphragm, it will be deflected. Deflection of the diaphragm leads to a change in the resistance of the semi-conducting material. The diaphragm is part of a what is known as a bridge circuit. Deflection of the diaphragm unbalances the bridge circuit, which changes the output signal. The output voltage is in direct proportion to the pressure applied (deflection of the diaphragm). Inspection The output voltage can be checked using a multimeter set to the DC voltage range. V W 5 01 012 2 200404 |