All right, so now I've got the help menu which is way more gooder... But still having trouble. I traced the alky transducer wire to C15 or "analog aux input signal 4". I then went into aux analog sensor setup and chose the 4th sensor down in the drop down menu - which was named alky psi. Entered gain offset etc as above. Added all the aux input sensors to dash, connected and the alky psi show .02 to .04 volts, and no change when hitting the alky button. I then checked the voltage on the outside of the pin on the xfi and it reads .5--volts, and when I hit the alky spray it jumps to 2.--volts. Obviously it should be reading the raw sensor voltage of .5 right? Also it appears we've got analog 1 and 2 for oil and fuel then 4 should be alky. But when I go into dash setup I've got oil psi, fuel psi, alky psi, then aux analog 1, aux analog 2, aux in 4, 5 & 7. So is that what's going on? Shouldn't oil be aux analog 1 and fuel aux analog 2? But also they aren't named that way in the sensor setup. I'm confused
Add
all of the aux sensors to the dash...... All of them, including Oil and Fuel.
I tell you this so you can see which one it might be no matter what it's name is. At this point, you just want to see a sensor voltage change. Some sensor, or any sensor!
I'm giving you this advise because when I first did this, I spread the job over a few days of doing other things. And I couldn't seem to remember what the hell I did. And to make things worse, I also wired stuff in the wrong way. When I finally got the electrical work right, I couldn't find it anywhere. I had already tucked the box and harness away neatly and didn't want to pull it all out and apart to see what pin-out I used.
When you find the one that changes with the push of the alky button, then that's the one you are using and rename it accordingly. Weather you named some other aux sensor Alky PSI in the past, or if it's called Oil, or Fuel, or Mary Poppins, it doesn't matter anymore. Just start over and rename the one that changes raw voltage when you hit the alky button. Then do as Cal has outlined above..... On the pull down menu, under aux analog sensor setup, Click the down arrow to select the sensor that you found to show voltage movement during your alky test, Click in the "edit sensor name" box, change the name, then hit "OK'.
Also, this is where you plug in all the other numbers as well. After you have successfully found and renamed the sensor, you can now remove all the other unused sensors and add it to your dash permanently. It should read PSI accurately now with the proper numbers punched into the gain, offset, and high/low limits.
If none of the sensors change raw voltage when you hit the button,
then your problem is in the electrical work. Or the alky isn't working. But even this shouldn't happen. Because you should at least see a low voltage on the sensor somewhere around .5 volts even when there is no alky pressure.
When you find the right one, be sure to also go back and un-name any sensors you are not using. This way you don't accidentally add a useless dead aux to a dash.
I hope this is close to answering your questions.