Torque PIDs...Take 2
- Thread starter ecoboostsho
- Start date
ecoboostsho
New member
Okay - progress on the tire pressures. Not there quite yet though. It is an interesting one as it was only giving me two PIDs back for all four tire pressures. It turns out that one of the PIDs is for either the left side or the right side...or possibly both front tires or both back tires together. In other words they are in pairs. Each PID returns 2 values for two tires. So 2 PIDs gets you 4 tires.
The PIDs are 224140 and 224141. They return a decimal value that gets divided by 3 and that gives you the pressure in KPA. At least I think...I am trying to verify all this. The challenge is two fold. First my scan tool pretends it knows which tire is the "front left" etc...well that is great until you rotate them a few dozen times...then they don't match up so it's made correlating the values challenging. The next issue is that I have to figure out which variable in the formula to use for individual tires. It might be as simple as A/3 and B/3 (multiply each of those 0.145 if you want PSI).
As soon as I have time to verify all this I will but if you get bored you could try it and see if the results make sense to you!
The PIDs are 224140 and 224141. They return a decimal value that gets divided by 3 and that gives you the pressure in KPA. At least I think...I am trying to verify all this. The challenge is two fold. First my scan tool pretends it knows which tire is the "front left" etc...well that is great until you rotate them a few dozen times...then they don't match up so it's made correlating the values challenging. The next issue is that I have to figure out which variable in the formula to use for individual tires. It might be as simple as A/3 and B/3 (multiply each of those 0.145 if you want PSI).
As soon as I have time to verify all this I will but if you get bored you could try it and see if the results make sense to you!
ecoboostsho
New member
Actually if that doesn't work you may need to try this:
((A*256)+B)/3 for one tire and ((C*256)+D)/3 for the other. You would create two gauges each with the same PID but each gauge would use the different formula. I don't think the first set of formula's I gave you will work since they have to be numbers bigger than 256 but give it a try both ways.
((A*256)+B)/3 for one tire and ((C*256)+D)/3 for the other. You would create two gauges each with the same PID but each gauge would use the different formula. I don't think the first set of formula's I gave you will work since they have to be numbers bigger than 256 but give it a try both ways.
ecoboostsho
New member
I don't actually know yet since my tires have all been rotated. I should he able to tell from the scan tool tonight if I have time. I also let the air out of one but that doesn't really help this issue. I am currently stuck at work!
Sent from my XT1060 using Tapatalk
Sent from my XT1060 using Tapatalk
ecoboostsho
New member
Lol. Yes there is. I am also raising one year old twins and a 4-1/2 year old. My wife is pretty understanding however there are limitations...
Sent from my XT1060 using Tapatalk
Sent from my XT1060 using Tapatalk
ecoboostsho
New member
Any luck yet?ShoBoat said:
Since the tire pressures are only available out of module that hangs off the MSCAN bus (as opposed to the HSCAN the PCM is on) I am actually most curious if Torque can read them at all. Forscan can do this which is why we can see them with that tool. As mentioned before if you don't have an MX or equivalent adapter you probably won't be able to get to the MSCAN bus to read anything.ecoboostsho
New member
Nice find! BTW definitely start with that second set of formula's....I'm convinced the first one I listed is "crap".
ecoboostsho
New member
Thanks for trying it! If it didn't respond at all that doesn't bode very well - that said Torque does let you specify the module manually. You could try entering the module name (look it up in Forscan) and see if that helps...ShoBoat said:
ecoboostsho
New member
That would be in the "Header" section I believe it is called within the gauge configuration itself. It defaults to "Auto" if you leave it blank but you can specify the module if you know it. i.e. PCM, TCM
ecoboostsho
New member
No joy here either. I did determine that the PIDs are in pairs and it is a "front" and "rear" grouping. I just realized you have a 2013...the 2011 doesn't have a BCM...we have a "Smart Junction Box" which is indeed on the MSCAN. The BCM in your car is on the HSCAN so I would think it would be more likely yours would work but maybe the address changed. I was hoping this was the reason you weren't getting a response and maybe I still could, but I've tried everything including trying to figure out the hex address of the module so I could plug that right in to Torque but it doesn't look like it is going to happen.
Also I figured out the "Torque Control Requested" PID and it is actually just an indicator of what function requested the Torque Control not the value itself. Values ranged from "Transmission" to "Tip In" to "Lean Decel". I can map them if anyone is terribly interested but I don't see a ton of value in them from a performance standpoint so I'm going to let that die on the vine...
Also I figured out the "Torque Control Requested" PID and it is actually just an indicator of what function requested the Torque Control not the value itself. Values ranged from "Transmission" to "Tip In" to "Lean Decel". I can map them if anyone is terribly interested but I don't see a ton of value in them from a performance standpoint so I'm going to let that die on the vine...
