S2 Stagea Shift Control Unit Fault

[GTR32G]

Anyone have any info on a Shift Control Unit for S2 Stagea, I have owned this car for around 1 year and tow my race car with it.

Over the last year the A/T dash light has come on dash when i was towing on the freeway. It lost drive and just free revved. Pulled over and turned car off. Got out checked fluid was all fine, restarted car and kept going with no other problems.

After this went and got the auto serviced but they found no problems and even said the fluid was quite cleans that came out.

Was all going good for a few months but now the A/T light seems to come on the dash more regularly, all i do is pull over turn the car off restart the car and goes fine again for a few weeks.

So I looked up and done the diagnostic check that is on the forums, it’s come up with one fault which is 13. Shift Control Unit.

So has anyone had the same problem or know where the Shift Control Unit is located, I don’t have a service manual so have no idea where to start looking.

Any help would be great.

[Duncan]

I have nfi either.....but if you can find where the unit is, I can pull mine and and you can have it

[chook]

heres the part on FAST, havnt worked out where it is located yet, have a look around the kick panels. Send me your vin for exact part # if you need.

[Duncan]

sure looks like driver's side kick panel from that bracket.

[chook]

heres location, yeah, looks like drivers kick panel.

[GTR32G]

Would like to say thanks for the help so far, was getting all happy thinking was on my way to fixing the problem. So pulled off the Drivers side kick panel and......... have no Shift Control Unit there????

Here is a image from my car let me know if you can see it. I will fell very dumb if you can but does not look like its there?

Any other suggestions before I start pulling covers off the car from everywhere.

[chook]

dont fret yet, mine is same, apologies, diagram was from R34, but shouldnt be too far away, check under dash, should still have the part number on it to help u. There is a similar looking unit under dash between steering column and fuse panel, could be the culprit.

[Duncan]

so, for better or worse, my drivers side panel is pretty much the same (although the relays are blue strangely enough).

I looked for the control unit part number for my vin WGNC34 102488, and it returns part not found, ie there is no part# 31036 for my vin.

maybe post or pm your vin to chook or myself, something strange here.

also, chook, i was not able to find diagram 310-A2 as shown in your screen shots....section 310 goes to 310-b1 and 310-b2 for my vin?

[Duncan]

ahh kk that makes sense. no idea what the part# is for stagea I can't find it.

[GTR32G]

Had a look at the unit next to the steering column and fuse box, part number is 31038 which seems to be another unit from the A/T from the parts dig posted above.

VIN is 6U900WGNC34126952

[chook]

the part under dash is 31038-0V700, "shift control assy", not "shift control unit" ie the 31036 part, which comes up as 'no applicable part #' for yours and mine as well, but may still exist somewhere ??? but im leaning towards 31038 being the one and only C/U the more I interrrogate FAST.

worth swapping this part before you go any further to eliminate it.

[Duncan]

lol my car is wierd. no part 31038 either. you are on your own here...have to find someone else with a manual conversion

[chook]

looks like a tiptronic (S2) specific part and the 31036 looks like a non-turbo model part.

[GTR32G]

Ok fantastic, at least I know what part to replace. BIG Thank you to chook and Duncan for you knowledge and research.

Will try and locate a replacement one to put in the car on Monday and keep people posted if the problem is gone may takes a few weeks or months to be 100% sure as it has come and gone a few times over the last year.

If anyone has this part lying around (I know it’s a long shot) Can I buy it please.

Will call Nissan on Monday see if they have any also.

[bubba]

The shift control unit (or TCM) it part of the ECU in S2 C34 autos.

I would suggest a dodgy earth somewhere.