RB20DET Throttle Sensor or Throttle Switch

[Sil240]

I'm not 100% sure but I believe the Throttle sensor is the connect directly on the Sensor.This connector on the harness only has 2 connectors on it, the FSM mentions 3.Power, Signal & Ground.Does anyone else have only 2 wires on their Harness??This guy:

Now the Throttle Switch is the little harness that comes off the Sensor.This guy:

[S13 240SX]

I hope you figure it out cuz i need the same help... I have 3 wires coming off but the third wire goes to no where and I can't find another wire anywhere in my harness near my tps or under the intake mainfold to find another wire that matchs it to wire up to..

[S13 240SX]

did you firgue this out???

can anybody add their comments and help this guy firgue this out, so then it can also help me. lol i been having the same question for months on all forums and never found an answer. : (

so please anybody help him so that it helps me too.

[S13 240SX]

sil240,,,, thanks to "Acecool" and him sending me a picture of his.. this is what it should be with the 2 wires and to which pins..

But i'm still puzzeled why mine has a third wire coming off it.... which is a yellow/ or yellow/red color.. can't remember which but i'm puzzled about it and also confussed at why my connector plug is black and not grey.

[Sil240]

Hey Thanks a lot for the pic!!!!

I dunno whats up??

I extended the 2 connectors for the Tbody and I guess its possible that I mixed up the wires.But I was pretty careful while I was doing it.

The FSM say that there are 3 contacts on each connector. Throttle sensor and Throttle Switch.I'm assuming the Black senor with the intergrated plug is the Throttle sensor and the other harness hanging from it is the Throttle Switch. Not 100% sure though.If someone could clear that up for me, I'd appreciate it.

But I to only have 2 wires on the Throttle sensor plug. And I have battery voltage coming from the 2nd pin (Red/Green in the middle). What does everyone else have????

The FSM says that the 2nd pin should be the signal, and the other two pins should be Power and Ground. Again I only have 2 pins.......

[Sil240]

I just went and got the MAF from my friend in Miami and took a pic of his TPS Throttle sensor harness'.Throttle Sensor:Throttle Switch:

Would anyone with a 2 wire setup be able to put a multimeter on you two wires and let me know what your getting?

[S13 240SX]

wow thanks.... do i see 3 wires in those pictures? can you make the pictures bigger and more clear?

I hope i'm seeing 3 wires in those pics and not just crazy..

if it's 3 please post back and let me know what the colors are?

[Sil240]

Yeah thats 3 wires the top one is Light green with silver dots, the second is darker green with a red stripe and the 3rd one I can't tell, I took that pic with my phone. It was some shade of green don't know if it had a stripe or what though

Hope that helps.

[S13 240SX]

Yeah thats 3 wires the top one is Light green with silver dots, the second is darker green with a red stripe and the 3rd one I can't tell, I took that pic with my phone. It was some shade of green don't know if it had a stripe or what though

Hope that helps.

on mine if i can remember it had green/white, red/green/ and yellow/red.. dont know but the third wire is cut and not conencted and its buggin the crap out of me cuz i dont know where it goes..

dude was that rb manual trans? from the picture u took

and plus do you have aim s/n so we can more about it?

[S13 240SX]

I just went and got the MAF from my friend in Miami and took a pic of his TPS Throttle sensor harness'.Throttle Sensor:Throttle Switch:

Would anyone with a 2 wire setup be able to put a multimeter on you two wires and let me know what your getting?

and.... test resistance between termianls 2 and 1igiton switch on]pedal not depressed should be 8 - 10vpedal depressed 0vcranking - approx.. 8v.

so i been told and from what i read.

[Sil240]

test

[Sil240]

Double post, but I was having a problem posting for some reason.

I think my TPS is blown so I went to the junkyard to find a replacement.I couldn't find any DOHC KA's only Altima's.I do believe I looked and they looked different than the RB20 one.

I did find a Q45 but that was def different than the RB20 TPS, but It looks similar to the RB25 one that is all plastic with 2 connectors on it.No pigtail.

I picked up some from Stanza's, SOHC S13's, J30 VG ones and a Z31 VG also.So one of the 4 have got to work.I will post the part #'s and pics later.

I wrote a whole long post but it didnt go through. So I'll try again later.

[gawdzilla]

the throttle switch isnt too important from what i've gathered. its basically an on/off switch that is continuous when the tps is less than ~.5v. i've had a bad throttle switch before and found that it makes no difference.

the tps is what's important. throttle switch is part of the tps body usually, and tps comes off as a pigtail from what i've seen. if that isn't the case you can always use a mulimeter to test it. one will be a potentiometer (variable resistance) and one will be a switch.

[Sil240]

I've researched and I've found the part # for the RB20/26 TPS.

22620-02U00

If anyone has the FAST program, could you please see if this part # x-references to anything.

Thanks

[gawdzilla]

it does not. the TPS for 26 is jdm only i know for sure. try calling rbmotoring. i ordered mine through them a while back for about $35

[240z4u]

the throttle switch isnt too important from what i've gathered. its basically an on/off switch that is continuous when the tps is less than ~.5v. i've had a bad throttle switch before and found that it makes no difference.

the tps is what's important. throttle switch is part of the tps body usually, and tps comes off as a pigtail from what i've seen. if that isn't the case you can always use a mulimeter to test it. one will be a potentiometer (variable resistance) and one will be a switch.

The throttle switch is integrated into the body of the TPS, and the actual TPS is on the pigtail on a KA. I installed one yesterday on my landrover throttle body, so its fresh in my memory.

Evan

[Sil240]

240Z4U-

what year KA TPS/Throttle Switch did you use?I could only find SOHC KA ones or VG (J30) or VG (Z31)

[240z4u]

240Z4U-

what year KA TPS/Throttle Switch did you use?I could only find SOHC KA ones or VG (J30) or VG (Z31)

It was a SOHC TPS. The reason I had to use it was because the Land Rover throttle body rotated backwards from the stock TPS. I did find an altima TPS that looks strikingly like a RB TPS with only one plug (no switch plug). Its sitting in my toolbox, a buddy pulled it and I have no idea what year it came off of.

Also, jury is still out if the KA tps really works properly, I am not sure what voltage is supposed to be at WOT. Ill do some logging with the ole' laptop and make sure its fine.

I had to splice the KA ends onto the RB harness.

Evan

[Sil240]

FOCK!!!!!!!!!!!!!!!!

I have a pile of useless TPS sensors!!!!!!!!!

All of these sensors rotate the opposite direction.Ghey!!!

So I still have not TPS sensor, but I'm only out $10, which is the bright side.

Thanks 240z4u

I would of put them on not noticing until I set it.Then I would of been more pissed off.

[mott6904]

I hope you figure it out cuz i need the same help... I have 3 wires coming off but the third wire goes to no where and I can't find another wire anywhere in my harness near my tps or under the intake mainfold to find another wire that matchs it to wire up to..

I had the same thing on mine. If you look at diagram in the fsm it shows it going to the auto trans system somewhere. I had a manual so i just heat shrinked the cut wire and called it a day

[Sil240]

THE SOHC KA, J30 & Z31 VG TPS SENSOR DO NOT WORK

They spin the OPPOSITE direction than the RB20/RB26 TPS sensors

[240z4u]

Do you need a sensor with a D shaped shaft?

Evan

[Sil240]

Evan- yeah i need a D shaped shaft sensor.

I'm gonna try to go to the junkyard after work.Hopefully I can get that Q45 TPS or any other TPS that spins the opposite way.

[240z4u]

Evan- yeah i need a D shaped shaft sensor.

I'm gonna try to go to the junkyard after work.Hopefully I can get that Q45 TPS or any other TPS that spins the opposite way.

I am finding, as long as it spins the correct direction you should be able to use almost any nissan TPS. The SOHC ka tps worked a charm for me so far. I an unable to get the voltage where I wanted it, but forgot I piggybacked my 5vdc for my map sensor off the TPS wires. Ill have to wire in a little regulator for that and move it off that feed. I can get idle dialed in but can't get over 3.98v at WOT. I am almost sure its that MAP doing it to me.

Evan

[Sil240]

Ok, so I made a huge trek through the junkyard yesterday. Only to find NOTHING....

Every single Q45 or J30 MAF or Tbody have disappeared.

But as I was leaving I see some Jamaicans pull'n a K20 out of a civic.So I start Bs'n with them and of course Island people take care of each other.

And this guy hooked me up lovely.He said I was his cousin (some guy I've never met before) and one of his friends sold me a Q45 Tbody with a TPS sensor attached. [really good price!!!! :- ) ]

I never realized how massive those things are.I don't think I'm gonna put that massive abomination on my little 20, but tonight I'm gonna slap that TPS on and hope for the best.

I was thinking about putting the Tbody on down the road, but I wasn't sure how bad it would destroy my Throttle response.

What do you guys think???Also keep in mind that I have a Top Hat Upper plenum. So the entry to the plenum is the size of the stock 60-65mm Tbody.Would that help me any??