LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2022 >> Transit Connect Titanium, Gas/Ethanol >> Repair and Diagnosis >> External Pages >> Different car >> Section 67 (Automatic Transmission - 6R100 -- F250-F350 Super Duty) >> Description And Operation >> Transmission Description - System Operation and Component Description >> Component Description

Component Description

WARNING: This page is about a different car, the 2018 Ford F-350 Super Duty and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

Sensors and Switches 

The PCM controls the electronic functions of this transmission. The PCM receives input signals from engine and transmission sensors and uses these inputs to control line pressure, shift time, TCC and shift solenoids.

Item  Description 
TFT Sensor This sensor is located in the transmission main control molded leadframe. It is a temperature-sensitive device called a thermistor. The resistance value of the TFT sensor will vary with temperature change. The PCM monitors the voltage across the TFT sensor to determine the temperature of the transmission fluid. The PCM uses this initial signal to determine whether a cold start shift schedule is necessary. The cold start shift schedule allows delayed shifts when the transmission fluid is cold to help warm the transmission fluid. The PCM also inhibits TCC operation at low transmission fluid temperatures and adjusts line pressure for temperature.
TR Sensor The TR sensor has a 6-pin electrical connector. The TR sensor is located on the inside of the transmission at the manual control lever. The TR sensor sends a signal to the PCM to start the vehicle in PARK and NEUTRAL. The TR sensor opens/closes a set of 4 switches that are monitored by the PCM to determine the position of the manual control lever.
TSS Sensor The TSS sensor is a Hall-effect type sensor that provides a TSS signal to the PCM that changes in frequency as the rotating speed of the trigger wheel part of the forward clutch cylinder varies. The TSS information is compared to engine rpm to determine TSS performance. TSS is also compared to OSS to determine shift quality and clutch performance. The TSS sensor is an integral part of the main control molded leadframe.
OSS Sensor The OSS sensor is a Hall-effect type sensor that provides a OSS signal to the PCM that changes in frequency as the rotating speed of the trigger wheel part of the output shaft ring gear varies. The OSS is used for shift scheduling. OSS is also compared to TSS to determine shift quality and clutch performance. The OSS sensor is an integral part of the main control molded leadframe.
scientia non olet · About LEMON Manuals