GF27.19-P-4019ACM Transmission Oil Temperature Sensor, Component Description

GF27.19-P-4019ACM Transmission oil temperature sensor, component description
- TRANSMISSION 722.643/649
- refinement package
- as of model year 09

Component Identification:

Location
The transmission oil temperature sensor is located in the electric controller unit and is rigidly connected to the conductor tracks.

Task
Measures the temperature of the transmission oil and passes the temperature to the ETC control unit (N15/3) as an input signal.





Temperature-dependent resistance with a positive temperature coefficient (PTC).

Function
The temperature of the transmission oil has a major influence on the shift time and thus on the shift quality. It is possible to optimize the gear shifts in all temperature ranges by detecting the oil temperature.
The transmission oil temperature sensor is connected in series with the starter lockout contact (Y3/6s1). The temperature signal is only conveyed to the ETC [EGS] control unit when the dry-reed contact of the starter lockout contact is closed.

PTC
PTC means "Positive Temperature Coefficient", in other words: The electrical resistance increases as the temperature increases (PTC thermistor).