Throttle position sensor not giving a reading even with a new sensor????

[dylansword]

I cant remember, they all had to do with the afm. I would go get them again, but i have disconnected the battery so there not there anymore.

I did some testing...

With the Key on, at the tps connector,

Battery Voltage is 11.8
IDL- 4.64 Volts
VTA-0.18
E2-0.02
VC-0.0

With the tps plugged in, at the maft pro blue wire, which is connected to Vta it is at .12-.13 v at idle and floored. And for those who are going to say i need to measure at the ecu, i am measuring at the maft pro, because that is where the signal ends up, so i am testing all the way through. Thanks

 

[dylansword]

I just retested Both of the tps's i have, and they both test good.

So that can be established, the tps its self is not the problem, it is the wiring somewhere.

 

[jetjock]

Sigh. OK. Since unlike some here you're making an effort to help yourself, don't write like a 12 year old, and have a thick skin here's the problem: Vc should be 5 volts. It powers all the sensors. No Vc = no VTA. No VTA = code 41. Again, a little RTFM would have made that clear. Snark...

 

[dylansword]

Okay, are the other wires about where they should be? Thanks

 

[dylansword]

Okay, just tested VC, At the ECU it is 4.94, i checked at the TPS again, and it is 0.00. So if i have this correct from looking at the TEWD wiring diagram, VC is a solid wire directly from the ECU to The TPS, and is essentially "tapped" for the afm? Correct?

 

[dylansword]

OKay so im 99% sure ive figured it out. I tested VC at the ecu and low and behold, it was at 4.94 volts. The previous owner was having problems with the afm, and had dont some stuff to the wiring to try and fix it. Well, i checked the afm plug, and Vc there had 4.94 volts. So i cut the tape off the harness at the fire wall, and the idiot i bought it from had Vc going directly from the ecu to the afm, and just cut it the wire going to the tps. So Hopefully when i connect and solder vc back together it will work! Thanks guys

 

[jetjock]

Yep, that should fix it. Good job. Apologies for being a bit harsh...

 

[dylansword]

okay, so i got it all wired up and soldered. Its running better than ever. Only problem i see is, the MAFT says TPS is at 4.15 at idle ans 4.80 floored. Not even close to the numbers posted before. I did adjust it via tsrm the best i could. Any ideas? Or is this fine? Thanks

 

[3p141592654]

I'm no expert, but I would check that the E2 (ground) wire to the TPS didn't suffer the same fate as the VC wire.