Allison Transmission Turbine Speed Sensor Problems

The electronic control system of the automatic transmission allison processes information from sensors and other vehicle systems and sends signals to.

Allison transmission turbine speed sensor problems.

P0717 input turbine speed sensor fix code p0717 input turbine speed sensor circuit no signal. You should always assume that this isn t bogus and try and get your transmission. Service manuals sm2148en and sm2457en and parts catalogs pc2150en and pc2456en may. Limp mode on allison 1000.

This manual provides troubleshooting information for allison transmission division md hd b series transmissions. There are generally two speed sensors that work in conjunction to provide accurate transmission data to the vehicle s powertrain control module. This limp mode locks the transmission into third gear and. This mode is triggered by anything that could cause severe damage to the transmission including severe overheating or towing a very heavy load.

Modern allison transmissions come with a limp mode installed. For the smooth operation of the automatic transmission allison it is necessary to comply with the requirements of the manufacturer in time to make maintenance and troubleshoot any problems. The transmission speed sensors are used to calculate the actual gear ratio of the transmission while in use. Things to look out for include harsh shifting inoperable cruise control and a check engine light.

The computer wants to know if the transmission is working properly. Output speed sensor transmission connector connector engine speed sensor connector v01634 tps connector turbine speed sensor connector hd b. If you have a p0717 input turbine speed sensor circuit no signal trouble code this post will help you understand what it is and how to fix it. Typical 4000 mh series transmission turbine speed sensor mounting pad input speed sensor nameplate fill tube and dipstick output speed sensor feedthrough harness connector v06342 cooler ports main pressure tap mounting pad both sides cooler ports feedthrough harness connector breather breather.

1 limp mode allison 1000 model the allison transmission 1000 model has a feature called limp mode in which the transmission locks itself into third gear. Ud trucks offers allison fully automatic transmissions with new quon 8x4 8 0 litre engine for added vocational appeal. This article will take you through symptoms of a bad transmission speed sensor. Replacing turbine sensor allison 3000 series trans.