Turbo Boost Sensor: Description and Operation

GF07.04-P-6051P Component Description For the Boost Pressure Sensor
ENGINE 642 in MODEL 164.1 /8, 203.0 /2, 221.0 /1, 251.0 /1 up to Model Year 2008 /AEJ 07
ENGINE 642 in MODEL 209.3 /4, 211.0 /2 /6, 219.3
ENGINE 642 in MODEL 463 up to 31.5.12





B5/1 Charge pressure sensor

Location
The boost pressure sensor is located at the right front on the engine downstream of the throttle valve actuator (M16/6).

Task
The boost pressure sensor detects the boost pressure (absolute pressure) downstream of the throttle valve actuator and sends this information to the CDI control unit (N3/9).

Function
The charge air pressure distorts a membrane with piezo elements. The resultant voltage is used by the CDI control unit to determine the charge air pressure.