TPS Wiring
Turbo Mini Forums

Hi,

There was a post a while ago which referred to how to determine which wire goes where on the TPS by checking the resistances accross the terminals.

Can anyone help me out as I can't seem to find the post.

It measured the resistance between, 1+2, 2+3, 1+3 and then told you which would go where on the megajolt wiring.

Thanks

Jon

Hold the throttle (or just the sensor) in its mid position and measure the resistances of 1-2, 2-3, 1-3.

One reading should be higher than the other two. This gives you the two ends of the track on the potentiometer. ie, either 0V and 5V, or 5V and 0V.

The other is the TPS signal.

ie, if 1-3 reads 5k ohms and 1-2 reads 2k ohms and 2-3 reads 3k ohms, the track is 1-3 and the TPS signal is off 2.

To determine which of the first two (1 and 3 in my example) is 0V, swing the TPS back to closed and measure between the signal (ie, 2 in my example) and the first two - whichever has the lowest reading (hopefully close to 0 ohms) is the 0V end of the track. ie, if 2 - 1 is now 0 ohms and 2-3 is 5k ohms, the zero end of the track is 1.

Schrödinger's cat - so which one am I ???

That's brilliant - Thanks.

So in your example the 0V (ground) would go to number 1, tps to number 2 and 5v to number 3.

Cheers

Jon

Schrödinger's cat - so which one am I ???