2G TCU Trouble codes

[brandonf90]

95 GSX A/T. so i did a TCU code test and i got two codes 84 and 44 that comes up as Open or Short-circuited Shift Control Solenoid valve B and Shift Control Solenoid valve B what is the procedure to change/fix the solenoid. there is a slow shift from 3-1 3-2 when at a stop light. and P-r is a little rough also N-D is a rough shift but 1-2-3 is flawless.(needs end clutch [ordered]) (fluid is at perfect level)

ALSO if anyone can provide a schematic for the changing of these solenoids it would be greatly appreciated. (my haynes doesnt include this)

 

[zipfast1997]

Ok...im not much of a brainiac at dsm but most a/t's are usually the same in some way...if im wrong I apologize...but usually the tranny will have either a side cover where they may be located or...like with ford and chevrolet...the solenoids are mostly located in the bottom pan where the filter is...id guss to try the lower pan first...its the easiest and if they are theyll be right there for easy access...

 

[brandonf90]

Ok...im not much of a brainiac at dsm but most a/t's are usually the same in some way...if im wrong I apologize...but usually the tranny will have either a side cover where they may be located or...like with ford and chevrolet...the solenoids are mostly located in the bottom pan where the filter is...id guss to try the lower pan first...its the easiest and if they are theyll be right there for easy access...

thx for the info. anyone else want to chime in with possible info on these transmissions?

 

[brandonf90]

Also does clearing the TCU codes effect performance?

 

[brandonf90]

I have a ipt end clutch ordered for my OD. Would the bad end clutch cause the two codes I've received (84 and 44)? Also where can I find the connections for these solonoids schematic would be best

 

[Kod]

Just remember that if the transmission is old, never had an transmission oil change and you put new fluid in it will probably wipe current transmission out.

ATF fluid breaks down the transmissions rubber parts to begin with but only so much and when the fluid becomes shot and keeps being ran with it and then you finally put new fluid in it basically just acts as a wash and will make you completely loose all gears.

 

[TalonKaos]

I have a ipt end clutch ordered for my OD. Would the bad end clutch cause the two codes I've received (84 and 44)? Also where can I find the connections for these solonoids schematic would be best

The shift control solenoid harness comes out of the case through a grommet and has red, orange, yellow, and blue wires. Follow it to the shift control solenoid valve connector

I don't know if you already read my reply in your other post but in case you didn't, your codes refer to a short in solenoid "B". I don't think your end clutch will effect your solenoids. Check your solenoids and if any are bad you can change them by removing your transmission pan, transmission filter, and valve body. Be careful when you remove your valve body as there are several sizes to the bolts that hold it on and there is an o-ring and several moving parts that you need to be aware of. Do your research first. I strongly recommend getting a year specific factory service manual.

 

[brandonf90]

So believe it or not I figured out the problem. The tps was slipping from being set to being way out of wack and throwing it into limp mode. Now for some odd reason it was giving shift solenoid b malfunction. I set it and torqued it down good then the code went away and now its running perfect

 

[TalonKaos]

Glad you got it figured out. The TPS can cause all kinds of mayhem if not adjusted properly.