Generic TR 125 Service Manual page 146

16.2.6 Intake air pressure sensor
16.2.6.1 Working principle of intake air pressure sensor:
The sensor is used to measure the absolute pressure of intake air elbow to reflect different inlet pressure
according to the resistance value, and the inlet pressure can be thus indirectly converted into calculation of the
size of the intake air into the engine combustion chamber. It is not the repairable parts
16.2.6.1 Appearance of intake air pressure sensor:
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