Trans Control System Error

[schuck89]

im having trouble with my 6spd Allison. im getting 5 Different codes P0700-Trans Control System error, P0827-Up and down shift switch circuit low, P0826-Up and Down shift switch Circuit, P0776-Pres. Control Solenoid B Perf/Stuck off P0762-Shift Solenoid C Stuck on. lookin see what everyone else knows ive never worked on an allsion personally besides changing internal/external filters an fluid ,truck runs fine shifts fine until it gets warmed up to about 200 Deg. which i think lil warm once its warmed up it gets stuck in either 3rd or 4th gear after it cools off starts shifting fine again every thing stock except for edge programmer

 

[Mike L.]

im having trouble with my 6spd Allison. im getting 5 Different codes P0700-Trans Control System error, P0827-Up and down shift switch circuit low, P0826-Up and Down shift switch Circuit, P0776-Pres. Control Solenoid B Perf/Stuck off P0762-Shift Solenoid C Stuck on. lookin see what everyone else knows ive never worked on an allsion personally besides changing internal/external filters an fluid ,truck runs fine shifts fine until it gets warmed up to about 200 Deg. which i think lil warm once its warmed up it gets stuck in either 3rd or 4th gear after it cools off starts shifting fine again every thing stock except for edge programmer

Check the wires in the steering column first. There is an electrical problem with your gear selector switch on the shift handle.
After you fix that, see if there are any codes left.

 

[schuck89]

that would cause it to only mess up when its warm

 

[Mike L.]

You have to start somewhere.

 

[schuck89]

ok thank you for your reply ill check that out

 

[schuck89]

Mike L. i went out to the shop took dash apart found the orange bundle of 4 wires i believe run from the gear selector and found one of the small wires in the bundle a black wire was broke right where the wire was bent and run through an wires clip do i need to replace whole wire or can i wire splice it back together thanks for adivice by the way

 

[mike diesel]

Solder the break back together.

 

[Mike L.]

Solder the break back together.

What he said. ^^^^^

 

[schuck89]

well i soldered an shrink wrapped the break back together and it didnt change anything all the same code keep coming took it for a drive and shifted fine in auto&manual till it got to about 175 deg the stuck in fouth gear again any other ideas??