Vehicle: 2006 Chevrolet Colorado, I4, Manual
Wideband: Innovate LC-1
* installed directly in to the PCM.
How it's installed
Through reading on the Corvette forums, someone posts a how-to for installing the wideband and being able to read it on HPTuners. I am sure we all know the option of splicing the A/C sensor. The other was to use PIN 55 of the blue plug on your PCM, which is supposed to be the EGR position sensor.
Seeing as my truck doesn't use that PIN, I contacted the person who did the write up, and through some quick help, we discovered that I can use PIN 7, on the grey plug, which is supposed to be the Transmission Fluid Temperature pin. Seeing as I have a manual transmission, I didn't have a wire to a sensor there, so I was able to install my LC-1 5v wire in to the TFT part of the PCM.
So now, when in HPTuners, if I put TFT(PID.4100) on my table, it should read whatever the LC-1 is putting in to it right?
Well, I tried setting up a custom PID so that I can read my LC-1.
User Defined -> made a new one. I used the formula;
([PID.4100]/.5)+9.6 as per instructions
I had the following read outs:
15.6
17.6
19.6
21.6
They all go up in increments of 2
They all end in .6, never changes
no matter what I do
I decided to take on of the readout numbers I was getting, and do some reverse math.
*19.6 minus the 9.6 I add at the end of my equation equals 10
*what divided by .5 equals 10, and that was 5.
So that's telling me, that when my table/scanner reads 19.6, it's getting a 5v signal.
15.6 = 3v
17.6 = 4v
19.6 = 5v
21.6 = 6v (this one puzzles me, seeing as it's no supposed to be over 5v)
I also have my LC-1 attached to a gauge, but it reads perfectly.
Does anyone have any idea, why the 0v-5v signal I am putting in to my PCM, reads out as 15.6, 17.6, 19.6, 21.6?
Please and thank you.