TRANSMISSION SPEED SENSORS

Transmission speed sensors are used to perform a contactless scan of a gear or trigger wheel in the transmission and generate an electronic digital signal proportional to the speed of rotation.

There are commonly two speed sensors that work in conjunction to provide accurate transmission data to the vehicle’s (ECM) engine control module or (TCM) transmission control unit. With somewhere between 60 to 100 sensors controlling today’s modern vehicles, it’s imperative to have a quality product, extensive range and competitive pricing. Goss’ offering is all of those things and more. Recently adding Transmission speed sensors to the ever expanding range. Transmission speed sensors are used to perform a contactless scan of a gear or trigger wheel in the transmission and generate an electronic digital signal proportional to the speed of rotation. There are commonly two speed sensors that work in conjunction to provide accurate transmission data to the vehicle’s (ECM) engine control module or (TCM) transmission control unit. The first is known as the input shaft speed (ISS) or primary sensor. This sensor is used to monitor the speed of the transmission’s input shaft. The second sensor is the output shaft speed (OSS) or secondary sensor. If either of these two
sensors falls out of alignment or experiences electrical issues, it can affect the operation of the entire transmission.

When the ECM receives the correct information from the transmission speed sensors it is then able to calculate the optimal gear for efficient driving at that speed. If the desired gear and the actual gear do not match, then the ECM may log a diagnostic trouble code (DTC).