DC2-ProdUcTiOnS

iTrader: (2)

So having some trouble understanding what Im supposed to be looking for. Need to make sure I do this right bc my friend has been chasing this problem for a month.

When testing the TPS, the procedure asks if there is appox 10% when the throttle is full closed and 90% when fully opened.

10% what? 90% what? From where? What am i measuring?

pic for reference

OneBadTurboCRV

Did you read the whole flow chart or just what you wanted to see? In the bubble above the one you circled it clearly states to use a scan tool. The scan tool will tell you exactly the percentage output is. You can't use one of those cheap ones that just displays codes only either.

DC2-ProdUcTiOnS

iTrader: (2)

And thats going to work on a OBDI ECU??

Because Im not sure of a scan tool that can give that kind of reading on OBDI

OneBadTurboCRV

You gave absolutely no information on the car yet posted an OBD-2 diagnostic diagram. How am I supposed to know it is OBD-1? Since that is the case, you CAN NOT use that flow chart since you have are OBD-1. And you still haven't provided a single useful piece of information to try and help you with so here is my stab in the dark:

Turn the key to the II spot without the engine running. Take a DMM and probe the TPS output wire. Measure the voltage and compare to spec. Take the throttle plate and go WOT and compare to spec. Let the plate close and verify you get the same voltage reading as before. If you don't then replace the TPS.

If you do, then VERY SLOWLY open the throttle plate through the range and watch to make sure you have smooth increase in voltage until WOT. If not, then replace the TPS.

If everything checks out then reverify that the voltage at WOT and closed throttle matches the range specified by the factory. You should be consulting your FSM for all this or at least a repair manual.

kyden

the factory scan tool shows percentage. So does all the aftermarket tuning solutions.

Runnerdown

0-5 volts.

Percentage of 10 and 90 correlate to .5v and 4.5 v as shown in the diagram. Use a multimeter to check the installed range. Easy math.

preludeNApower

So simple

DCFIVER

QFT.

FrostyEG

iTrader: (1)

I just did this test today on my 93 EH/EG.

If you have the same plug as shown, turn the key to the ON position, don't start the car. Unplug the TPS and measure voltage across the two outer terminals. You should see 5 volts. Now the hard part. Plug it back on to the TPS and measure + on the middle wire and - on the body ground someplace.
I used a small paper clip shoved in the back of the plug with an alligator clipped-on for my + to the meter to get inside the middle wire.
Now you should read .5 when the throttle is closed and 4.5 when fully open.
As OneBadTurboCRV mentioned, you want to open the throttle slowly and look for any spikes or dead spots. It's not easy to open really slow with your hand, but do it several times and you'll know if it's bad.
If you get the same values, your TPS is fine.

DC2-ProdUcTiOnS

iTrader: (2)

thanks for the help from some and sorry for not being comfortable with wiring to the others. lol

Got it all taken care of, thanks