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Home >> Land Rover >> 2012 >> LR2 Base >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Automatic Transmission/Transaxle External Controls >> Automatic Transmission/Transaxle External Controls (Vehicles With: AWF21 6-Speed Automatic Transmission) >> Description & Operation >> External Controls >> Selector Lever >> Sensor Module
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Sensor Module

A sensor module is located on the LH side of the selector lever. The sensor module is an intelligent unit and controls the selector position LED operation and also the shift interlock solenoid operation. The sensor module comprises a Printed Circuit Board (PCB) and Hall effect sensors which detect the selected position of the selector lever (M/S and +/-) via a magnet located on the lever mechanism. The signals from the Hall sensors are passed from a connector on the sensor module to the TCM on a Local Interconnect Network (LIN) bus.

The sensor module main connector uses four pins for LIN bus, ground, power and neutral inputs and outputs. A second connector allows for the connection of a ribbon cable from the selector position LED for night illumination and position illumination. A third connector supplies power and ground connections to the shift interlock solenoid.

The sensor module also includes an optical sensor which determines that the selector lever is in the Park (P) position. The sensor is located behind the module housing and is not visible. Alignment marks on the sensor housing and the sensor arm must be aligned when the selector lever is in the Park (P) position. When these 2 marks are aligned the optical sensor/park position is correctly adjusted. This adjustment is set at the point of manufacture and does not require re-setting under normal operating conditions.