Allison Transmission Neutral Safety Switch Location

Column shifters have the neutral safety switch located on the of the transmission.

Allison transmission neutral safety switch location.

The nsbu switch mounts directly onto the transmission housing from the outside and detects the angular position of the shift selector shaft. Has anyone here had to have their park neutral safety switch replaced on their allison transmission. Go under the vehicle and locate the transmission position sensor switch. The neutral safety switch will allow the engine to start with the transmission selector in park and neutral.

The nsbu switch transmits selector position information to the tcm. I have found a tsb 02 07 30 011c that seems to cover my problems. Grab a creeper flashlight and tools for the job. If so what problems was your transmission giving you before you replaced the switch.

In addition to the column shifter another component associated with the shift selector is the nuetral safety back up nsbu switch mounted on the selector shaft of the transmission. Remove the transmission position sensor switch step 1. Put on protective clothing oil resistant gloves and safety glasses. Mechanical floor shifters have the neutral safety switch located on the of the transmission.

The switch is located in two places on the vehicle. I am currently having some problems with mine including diagnostic codes p1711 and p1713. Part 4 of 7. Locate the transmission position sensor.

This may be an internal electrical fault with the transmission neutral safety switch position range sensor that tells the computers what gear the transmission is in i have seen this fail on several models in the past before and had to replace it for issues like this here if this has not been checked tested at all this should be done to see if.