Fellas:

Ive been having endless rejections of TPSs in my d15b2 crx. I tried one from another car, direct wired the ground to chassis, calibrated calibrated calibrated, and no matter what i get code 7, TPS malfunction. I am testing 5V power to tps and correct range of volts returning to ecu, but the ecu must not be seeing those voltages because it constantly kicks out code 7. Therefore, i want to directly wire the tps to the ecu and bypass the stock harness. The ground already has been done, i grounded it to the valve cover strap, and i have continuity between battery negative and the tps ground. I wanna know which wires to cut at the ecu to bypass the stock harness and how to get the ecu out of the car. Would a failed ecu also cause these symptoms? The car runs otherwise fine, aside from stuttering and machine gun exhaust note because of the tps.

 

I test all my voltages at the tps plug, not at the ecu

 

Have you tested for continuity? from TPS plug to ECU, have you reset the ecu?

 

also is the car Dual Point or Multi Point Fuel Injected?

 

Dual point, and I have reset the ecu. I have not tested for continuity of plug to ECU, how do I test that? I assume theres Power continuity, since I get 5V at the connector, but maybe the return wire, the signal wire, isn't reaching the ecu? Maybe it's frayed and shorted out somewhere or it got cut. How do i check at the ecu

 

bump

 

Confirmed tps is set correctly, grounded and powered, throttle cable is set, still code 7. I unplug the tps and it doesnt change the idle. I think the ecu doesn't see it. Help? Which wure to tap into directly at the computer?

 

THANKS FOR ALL THE HELP GUYS!

 

have you tried grounding it at the sensor ground at the ecu and not the chassis ground?

 

having tps issues and wanted to direct wire, went through everything on the car, that I know how to do. Everything has continuity throughout engine bay. F23a in a 96 accord. Ecu is a p28 with a obd2a to obd1 jumper. I also tested car back on stock ecu and still had tps come on. I didn’t notice until a few weeks after swapping engine the first time. I still had stock ecu and passed emissions it was after getting tuned. I’ve done this swap before in another accord of mine previously and didn’t have issues. I think it has something to do with the wires from the engine bay to ecu. Any help would be great