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Home >> BMW >> 2019 >> X3 M40i >> Repair and Diagnosis >> External Pages >> Different car >> Section 575 (Functional Descriptions - F25 - Cooling System, Engine Performance) >> Engine Performance - Functional Description >> Natural Vacuum Leak Detection (NVLD) >> Brief component description >> Basic version: Natural Vacuum Leak Detection temperature sensor and pressure switch

Basic version: Natural Vacuum Leak Detection temperature sensor and pressure switch

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Two separate components are fitted in the basic version. The temperature sensor and pressure switch belong to the NVLD. The temperature sensor and corresponding electronics are secured near the fuel tank. The engine control communicates with the temperature sensor through a data line connecting the two. The electronics and temperature sensor are supplied from terminal 30F.

The pressure switch is connected to the electronics and temperature sensor. The pressure switch is located on the side of the carbon canister housing.

Fig 1: Identifying Vacuum Leak Detection Temperature Sensor And Pressure Switch Components (Basic Version)
G09909251Courtesy of BMW OF NORTH AMERICA, INC.
Index Explanation
1 to fresh air filter
2 Pressure switch
3 to carbon canister
4 Three-pin plug connection
5 Electronics and temperature sensor
6 five-pin plug connection