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Home >> BMW >> 2013 >> 528i >> Repair and Diagnosis (Single Page) >> General Information >> OEM General Information >> Functional Description - F10 - Stability Control System, Tire & Wheel System, Lubrication System >> Lubrication System - Functional Description >> Oil condition sensor (Ver. 2) >> Structure and inner electrical connection

Structure and inner electrical connection

The oil condition sensor is connected via a bit-serial data interface to the engine control system.

The electronic monitoring circuitry is completely contained within the electronic component and employs capacitance measurement to operate.

The voltage supply is dependent on the engine version (e.g. via terminal 87, terminal 15 or terminal 15N).

The following graphic shows by way of example the voltage supply via terminal 87.

Fig 1: Inner Electrical Connection - Circuit Diagram
G09910043Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
1 Capacitor 1
2 Capacitor 2
3 Temperature sensor
4 Electronic component with evaluation electronics
PIN REFERENCE

Pin Explanation
BSD Bit-serial data interface
Terminal 31L Load ground
Terminal 87 Battery voltage with ignition ON