Upon installing my latest mod, i was required to use a different type of throttle position sensor, so i had to splice in a new connector on the harness side. Simple enough. So i took a look at the wiring diagram and it seemed simple enough. Here is what i have to work with so far. This is a view of the new throttle position connector next to the stock honda wiring diagram.



So this is the way i figured it should be wired up.



Now, when i run the car at closed throttle hondalogger states im at 95% throttle, as i rev, the number drops in percentage. So basically, somethings backwards. But looking at the diagram i dont see what it could be. Any help is appreciated, thanks.

 

well based on your diagram it seems like you wired it correctly. im assuming your using a larger tb which came with its own tps already mounted. have you made sure the sensor itself is adjusted at the right angle. Use a DVOM , connect one probe to ground and the other one onto Input signal, you should adjust the tps so it reads .45V at CLOSED throttle and 4.5V at WOT.

 

Right now, i measured it at the ECU, closed throttle is reading near reference voltage, 4.6v. As i depress the throttle, it drops to the 1.3v range. Its doing the opposite of what it should be doing.

If i switched the ground and the 5v reference would this be a symptom?

 

Ok, well i dragged my *** outside and reversed the + and - wires and that was it. idles beautifully now.

 

sounds like its reversed. it is just reading wot instead of referance voltage

 

Read the post directly above yours rainforest.