Dual Clutch Oil Pressure Sensor, Basic Function - GF25.19-P-2000A

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Transmission 700.420/421/422/423, 724.033/044/045/103/114/115/120

Fig 1: Dual Clutch Oil Pressure Sensor Components Location - Transmission 724.033/044/045/115

Courtesy of MERCEDES-BENZ USA

Example illustration of oil pressure sensors

Overview

This document contains information on:

General
Function

General

The clutch oil pressure sensors (1, 2) detect the oil pressure of the inner and outer clutch of the dual-clutch transmission. They are located in the lower area on the front side of the dual-clutch transmission.

Function

The hydraulic pressure of the transmission oil is applied to a diaphragm. The mechanical tension in the diaphragm is measured and output as an analog output signal. The oil pressure recorded for the respective clutch is continuously forwarded to the dual-clutch transmission control unit and it serves as a basis for calculation of the clutch actuator's pump speed.