Mytqik's TB45 to TD42 wiring guide
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Someone must have cut too many wires. I've just connected my battery to see what warning lights are working and the Ecutalk display is showing me both engine temp and battery voltage.
Tps
white
black
blue/red
blue/yellow
black/blue
blue
I cant find any wiring diagrams that match these colours, any chance you guys know?
I got my hands on a tps for the top of a pump from a safari, my wiring colours on the safari tps are -
white
black
blue/red
blue/yellow
black/blue
blue
I cant find any wiring diagrams that match these colours, any chance you guys know?
Did you see in my conversion thread where I removed one of the springs from the ZD drum because I was worried about it being too firm.
Anyway, can you sort out your IP TPS now from the plug I mentioned or do you still need to know what wire is what?
Anyway, can you sort out your IP TPS now from the plug I mentioned or do you still need to know what wire is what?
That would solve your issue of throttle open/closed signal which you can't get from the 3 wire TPS you have but it won't resolve the problem of the 5v needed from the TCU.
Also, last time I looked for a 6 wire TD42 TPS they were $350 so I adapted a $50 TPS from a ZD30.
Factory cruise control works as it did before. You just need to connect the throttle cable.
There's a pic in my thread how I did mine
The wiring diagram shows 4 wires going between the TCU and ECU. You would need to work out what they are etc.
I would suggest not using the TB45 TCU unless the ECU is there and communicating to it.
If you want to use a Nissan TCU without a ECU present, then try a TCU from an automatic carby 4.2 GQ.
Thanks for all the info in here Mytquik. Wish I found your TPS wiring info in post 14 before I wasted a lot of time looking for that info. I posted a few of my same findings in here (which also has some good info on TPS part numbers etc.);
http://www.patrol4x4.com/forum/nissan-safari-31/td42-auto-problems-93265/
I hope i'm not seen as too anal by correcting a minor issue in the quoted info above.
It isn't 12v positive or negative that goes into the TPS. It's 5v, and both + and - is coming from the TCU just for the purpose of TPS. The factory wiring diagrams show what pins it comes from, so if you are wiring a TPS to feed into your TCU, then it should be obvious that you feed it from the TCU and not an external 12v + and - source.
Thanks Snatchy.
I have not seen the diagrams yet, just starting to research this project, I am assuming from threads I've read on here there is some kind of datalink between the two control units.
I am looking at putting an auto into a GU factory TD42ti. Was hoping to buy all the bits from one vehicle and I have found a couple of wrecked TB45 autos with all the extra bits but by the sounds of it I can't use the TB45 TCU.
I have not seen the diagrams yet, just starting to research this project, I am assuming from threads I've read on here there is some kind of datalink between the two control units.
I am looking at putting an auto into a GU factory TD42ti. Was hoping to buy all the bits from one vehicle and I have found a couple of wrecked TB45 autos with all the extra bits but by the sounds of it I can't use the TB45 TCU.
No, it can't. If the data communication wires aren't there, it goes into limp.
The TB45E auto ECU was designed to retard the ignition at each up shift so it's seen as a fault if it can't communicate.
To the best of my knowledge, there is no auto ECU/TCU combo for the TD42Ti.
You can use the TCU from a TB42 or TD42.
I think you'll find he realised it was a typo but couldn't edit the post after a day.
Anyone working on TPS wiring knows it's 5v so it wasn't really an issue..
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