5 Spped Auto + And -

[iamhe77]

Haven't seen that before, can you follow the wiring by any chance?

AWD/RWD switch?

[Commsman]

If you can work out where the wiring goes & therefore what it is doing, it could be a legitimate mod, or one that you can easily reverse. In that case see if you can get the dealer to go back to the original offer to pay for the gearbox. Then you will have a spare to use or sell .

I'd be hesitant having it sent to another workshop who may discover the switch, flick it off (or remove & bypass it) & say 'all fixed', without actually knowing what it does.

[scotty nm35]

If it locked the stall converter you would stall at lights. It could perhaps unlock it but my money is on a rwd/awd switch. It seems to have been done locally too. I would be asking them to take it to Nissan and plug the consult3 in to retrieve the codes.

[ChrisB]

I have traced the wires from the switch.

Remember the trans runs fine when the switch is on and goes into limp mode a few times a day when the switch is off.

See pictures below of the wiring.

Obviously if I restore the wiring to factory the problem will be fixed.

If anyone has any information on the wiring and why anyone would want a switch to break this circuit id like to know.

Should I still get the transmission joint to look at it while its under warranty?

Cheers

Chris

[scotty nm35]

Mmm, pink wire, the torque lockup wire is the yellow one I seem to remember. I will see what I can find out for you.

[PN-Mad]

Wasn't blue and pink the brake one, for more throttle response?

I haven't paid enough attention!It's all different in mine anyway...

[Dunc]

Wasn't blue and pink the brake one

Thats on the main ECU, rather than what he took a photo of which is the trans ecu I believe

[PN-Mad]

Oh, ok. Forgive me!My trans ecu is in the gearbox! So I didn't really know what I was looking at

[scotty nm35]

SEL3, whatever that means, I cant see any info or what it does other than it goes back to the valve body. Perhaps its the 3rd gear selector switch or something?

I will delve further if you want but I would say its been done to get around a fault of some kind.

[ChrisB]

Thanks Scotty,

Thing is, with the switch closed the car runs fine.

With it open, it essentially cuts that pink wire.

I have removed the switch and now the pink wire is where it belongs in the trans ecu.

Interesting to see that the yellow wire has also been cut at some point and has already been put back together.

There is another hole drilled in the blank switch cover next to the switch that was in the pink wire.

I believe at some point there were two switches.

Perhaps some performance mod that was done in Japan and then only partially removed?

I'm going to take it to the transmission joint the dealer wants me to use tomorrow and see what they think.

While shes running fine its one thing but i know there are still metal filings in the bottom of the pan so a good flush and maybe even a trans cooler wouldn't hurt.

Scotty, if you can confirm why they may have been a switch in the 3rd gear selector or valve body, it could well be useful if i need to negotiate the repairs with the dealer.

Thanks

Chris

[scotty nm35]

I think it's more likely the 3rd gear solenoid but without a better schematic I'm only guessing. If it runs fine connected just leave it like that and see if it throws any codes.

[ChrisB]

By the way of closing off this thread I will end by saying thanks to everyone for their input and add that i have now changed the + and - shift direction back to the way Nissan intended.

Some of you may cry out that I'm wrong but to be honest the Stagea is a stock standard daily and the V36 now only comes out when the sun is shining. I wanted the Stagea to have the same shift direction as the 370GT because I'm just used to it and don't want to have to think about it. Having said all that I only ever use the shift stick in the V when I'm bored with the paddles anyway!

It would seem that the auto transmission is fine now that I have put the transmission ecu wires back where they belong and removed the mysterious switch. I believe that back in Japan, someone had also put a switch into the yellow wire to lock the torque convertor manually perhaps in 3rd gear, and the remaining switch in SEL3 was the leftover remains of the thrill seekers experiment. There was after all evidence of a second switch from the hole left in the blank cover. Twice last week the 4WD warning light came on and reset by cycling the ignition. I haven't seen this fault or had to deal with transmission limp mode since removing the switch (or leaving it in the closed circuit position).

Going to the car dealers preferred mechanic on Monday to pull the pan off and look for any more metal flakes. Best I can hope for is that the dealer picks up the tab to flush the box and fill with Mattic J for peace of mind.

My next post will be of some pictures of the Stagea and the new head unit being fitted this Friday.

Cheers

Chris

[iamhe77]

Glad it is sorted Chris and hope the dealer pics up the tab.

btw, it's not you who is wrong (you are after all just used to the directions), it is Nissan that are wrong

[Jetwreck]

Glad it is sorted Chris and hope the dealer pics up the tab.

btw, it's not you who is wrong (you are after all just used to the directions), it is Nissan that are wrong

It's quite obvious that Nissan are wrong after another performance company goes to the hassle of making up parts to change it!

http://usa.auto-style.jp/?pkey=item_info&i_code=MNS24123290001&