Allison transmission detent lever neutral safety switch.
Allison transmission neutral safety switch location.
A neutral safety switch works just like a clutch switch except that it keeps an automatic transmission from starting in gear.
The vehicle is equipped with a column type shift selector.
Also known as a prndl switch.
The neutral safety switch will allow the engine to start with the transmission selector in park and neutral.
Some of the symptoms of failure include but are not limited to no start condition gear shift indicator on dash not following properly trans stuck in limp mode or fail safe dtc s set indicating pressure switch codes this switch easily installs with just common hand tools.
When this sensor goes bad you ll likely get a shift range inhibited message on the message center along with a flashing light under the gear or range you are attempting to shift to.
The switch is located in two places on the vehicle.
Allison world 1000 2000 2400 gen4 transmission wiring harness parts catalog ˇ ˇ dim a w o blkhd max length 16 0 m min length 1 0 m.
It s possible that the logic device could be re set another way like removing a battery terminal and waiting a minute before re connecting but i don t know this to be true.