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.
| 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 |