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Structure and inner electrical connection

The environmental air catalyst sensor comprises a temperature sensor (NTC) and evaluation electronics. The environmental air catalyst sensor is connected via a 3-pin plug connection to the DME.

The environmental air catalyst sensor is supplied with power from the front power distribution box with terminal 15N.

Fig 1: Evaluation Electronics - Circuit Diagram
G10092481Courtesy of BMW OF NORTH AMERICA, INC.
Index Explanation
1 Evaluation electronics
2 Temperature sensor
CONNECTOR PIN REFERENCE

Pin Explanation
Terminal 15N Terminal 15 after-run, supply voltage
LIN LIN bus
Kl. 31 Ground connection (Terminal 31)
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