When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I would have bought a $350 innovate dual wb and plugged in the sensors before the cat, then used the 1v outputs for the ecu.
I see you are tryin to use the ac pressure switch pid as the wb. Its gonna make your fans go crazy, Check the three lines, one will give you 5v on multimeter when black is on ground, the other should give you a ground, the last one is your input for the pid...
So back to my question - which end of the connection ties into the wideband?
See Naf's response
Originally Posted by Naf
I see you are tryin to use the ac pressure switch pid as the wb. Its gonna make your fans go crazy, Check the three lines, one will give you 5v on multimeter when black is on ground, the other should give you a ground, the last one is your input for the pid...
Get your meter out and it will give you the right answer.
When black is on ground? I don't even have a black wire?! Technically speaking there is no ground wire either. I guess he means the tan wire which is technically a low reference wire, but sort of like a ground for the ECU?
I don't like guessing on making connections to the PCM. That could be bad. I'm not disputing the wire which does the function i want, just which end - the female end or the male end in my first post pic?
Last edited by itsdaveonline; 07-02-2015 at 10:02 AM.
From the pic it looks like the female goes to the sensor and the male goes to the ecm. If that is true, plug into the ECM side/male. You need the ECM to report the delivered signal back to HP Tuners through the OBD/CAN ports.
BTW - the "black wire" on the multimeter on the "ground" or low reference (this is the signal ground for the ecm). He is telling you how to check the voltage across the three wires and determine where to hook things up. I would advise doing this as well. I have an alldata subscription and have seen differences between the documentation and the implementation (few and far between but there). As you mentioned you don't want to make a mistake on a wire feeding the ECM.
From the pic it looks like the female goes to the sensor and the male goes to the ecm. If that is true, plug into the ECM side/male. You need the ECM to report the delivered signal back to HP Tuners through the OBD/CAN ports.
BTW - the "black wire" on the multimeter on the "ground" or low reference (this is the signal ground for the ecm). He is telling you how to check the voltage across the three wires and determine where to hook things up. I would advise doing this as well. I have an alldata subscription and have seen differences between the documentation and the implementation (few and far between but there). As you mentioned you don't want to make a mistake on a wire feeding the ECM.
Okay your translation of the task at hand is making more sense. And you were the first one to actually answer my question directly! Again you saved the day
I'll get out the multimeter to dbl check here.
Last edited by itsdaveonline; 07-02-2015 at 11:12 AM.
07-01-2015, 09:19 PM
Datalogging via A/C pressure sensor question 
