DONT tell me to search, i already did, and after going through about 50 threads, i still cant figure out how to check the TPS using an multimeter. i dont want to use the damn LED method either, because im lazy, and want it to be perfect. All of the tps writeups i could find are for s4's. I need to know what pins on the tps connector to hook the multimeter up to to check the ohms. I found a writeup that says use the top middle and top right pins, but i did, and the tps screw is about to fall out at 1000 ohms. can anyone help me out here?

**** the search police!

 

here you go the best most accurate way to check an S5 TPS

 

In the FSM "fuel & emmissions section"

Pull off the cold start fast idle cam so the throttle returns all the way to the idle stop.

I use a cheap analog (needle) multimeter.
Look for a smooth swing, as you open the throttle, from 1K to ~5K.
If the needle jumps around or does not repeat, the TPS is dirty inside or is worn out.
The lights will tell you if the idle setting is OK, but a bad spot in the sweep will drive the ECU nuts.

The exact value is not critical. As long as it repeats, the ECU will self adjust.

 

that helps, thanks

 

also, pick up a haynes manual. Has almost everything you need to know to test/check all the sensors, including s5 tps.

 

It's the same damn two wires...green and black.
http://fc3spro.com/TECH/HOWTO/TPS/tps.html



-Ted

 

jeeze ted, calm down.
not everyone's perfect, and all-knowing like you

 

Why not set it for voltage...that's what the ECU sees/expects right?

 

take a piece a plain piece of wire, and try to measure it's voltage. Your going to get nothing.
The sensor doesn't generate electricity.

The ecu DOES see voltage, the sensor acts as a variance in resisastance to that voltage. Therefore you get different voltages at the ecu.

 

That's why you probe the signal wire for the low range TPS sensor.

For the low range sensor alone, there's three wires. One ground, one signal, and one 5v power.

One probe (-) to the ground wire, one probe (+) to the signal wire.

Leaving the TPS plugged in the entire time.

Key turned to on, engine warmed, you WILL get a signal.

Now adjust so that the low range sensor at rest engine warmed displays 1.0v and it'll idle perfect. You can even (after disconnecting the fuel pump) have someone slowly sweep through the range of both sensors to check for dead spots.

 

A while back (Aug. '02) I adjusted mine,'89TII, to 1.00 volts. Tried it numerous times in garage, and the reading would return to .99/1.00 volts. Idle was perfect. Took car for spin, and under maybe, 3/4 throttle it kicked back. Came home and checked with lights. Both on. Adjusted tps 'til only 1 on, and then the car ran fine, and has been, running perfectly ever since. Some swear by ohms, some by volts, and some say forget the Mazda checker. I just find it easier, once set, just check with lights, and the intercooler doesn't need to be removed. I do believe it's more accurate to adjust by the ohm method rather than voltage though.
To each his own.

 

I've mentioned this at least 3 times recently, and my web page also does.
If the original poster actually did search, they wouldn't come across ONE of these references!

Yes, I'll be taking pics of the Kouki TPS and TB to put on my TPS page later...



-Ted

 

hey good thread, thanks!

FFTSP I found what I was looking for

EDIT: you know the irony here is I'm really not finding anything other then technical jargon that does a mediate job of applying to an s5. The truth is, I still don't know what teh **** to do with a multimeter on an s5. I take it no one has taken the time to specify its own documentation. RETed did say that its the same two wires as the S4 writeup. I'm sure that will work fine. Thanks.

 

I think thats a negative. Try finding it yourself, it identifies throttle sensor in chapter four, but does nothing more than that.

 

My s5 tps adjustment results:
https://www.rx7club.com/showthread.p...42#post3099842