Question about TPS adjustment on 1g AT

[92GSXman]

I have a 92 TSI and I'm getting a code 14 on my ecu and a code 12 on my tcu, both which have to do with the TPS. I tried checking the TPS voltage coming from the ecu, the manual says that each pin should read around 5.0 volts but only one of mine did. I then used the jumper wire test to try to test the voltage going to the TPS and got .72v, the manual says that I should have .48-.52 if I remember correctly.

I plan to take the TB off tomorrow and try to get .48-.52v like the manual says, should this take care of my transmission code too?

Why would only 1 of the 3 pins read 5.0 volts? I got a reading from the other 2 but it was no where near 5.0. If anyone can help me please do so. I've already searched and read through many posts but can't find my answers. Thanks in advance!!!

 

[steve]

Because only one pin on the TPS is connected to 5v. That's pin 1. Pin 4 on the other end of the connector is connected to ground and pin 2 is the output to the ECU. It's voltage will vary as you turn the throttle from about 0.5v with the throttle closed and the TPS correctly adjusted to almost 5v when the throttle is completely open. The voltage needs to smoothly change without any spiking or dropouts.

Steve

 

[92GSXman]

Because only one pin on the TPS is connected to 5v. That's pin 1. Pin 4 on the other end of the connector is connected to ground and pin 2 is the output to the ECU. It's voltage will vary as you turn the throttle from about 0.5v with the throttle closed and the TPS correctly adjusted to almost 5v when the throttle is completely open. The voltage needs to smoothly change without any spiking or dropouts.

Steve

OK, that makes sense! The Haynes manual kinda failed to mention that. The way I read it was that all three should read 5v. I plan to adjust the TPS today using the jumper wires to .48-.52 and hope that will solve my problem(s). Like I said right now it's at .72v so that's gotta be the problem. Thanks for your help!!!