Had a small €10 touch screen laying around, hooked it up to my DIY CAN board and will take it down to the car tomorrow and check that the calculation looks right

Printed a small housing for it. Didn't like the code library to write stuff on the screen very much but that's probably my fault not finding the smarter ways of using it yet. It supports different fonts and so on which, as you can see, I didn't get to ?

 

Out of my depth here, but just wondering if the instrument cluster CAN(?)has some interesting communication as it displays oil temp and pressure at what seems a pretty ok update frequency?

 

On my BMW I hooked up to the CAN bus that the cluster is on and yes, tons of stuff being broadcast there. I was looking at the Toyota tech site materials trying to find a good place in the car to connect to some of the CAN buses. But plugging in the OBD2 connector is easy and will do for starters

 

The electric schematic shows a couple of CAN junction points and CAN gateway. Where it's best physically to connect is still not entirely clear. The drawings of what is where is okay but I need to tear off some panels to see what it really looks like.

 

The electric schematic shows a couple of CAN junction points and CAN gateway.

How did you get hold of electric schematic? How can I get one as well?

 

Think I'll pop down and run Techstream and log the requests and replies.....

 

I think, it's time to revive this thread with some input .

Did some experimentation today and found a formula which works for my GRY and the % of pressing the accelerator pedal. Well, this information might not be essential for driving, but it's fun to see how steady your right foot can be :

OBD2 Mode and PID: 221059
Long name: Accelerator Pedal
Short name: Accel Ped
Minimum value: 0
Maximum value: 100
Scale factor: x1
Unit type: %
Equation: (A-41)/1.42
OBD header: 700

After PID setup (equation should read just A) go into your car, start Torque and switch on ignition. Don't touch the accel pedal, just read out the value (in my case 41). Now edit the PID settings and correct the zero point in equation (for me it was A-41). After restaring Torque the accel pedal reading should be zero.
Now fully press the accel pedal, the reading should change to 100%. If not just adapt the multiplicator (in my case the equation now is (A-41)/1.42 ) until you reach 100%. Now you got a new working pedal indicator.

Bye for now Fred

PART 2

Today I looked after oil pressure. My attempt is to try any formula given to me, verify the output and if needed adjust the results, verify again (and so on). In case of the oil pressure it was easy, only two iterations to get it working.

NOTE: The results of any measurement are not absolute, they are valid if you compare and they are "close to reality". There are numerous factors who interfere with a good result (e.g. a calibrated sensor will cost beyond €500.-). So we have to be lucky to get results within 2% wrong readings. But I think that's good enough.

OBD2 Mode and PID: 221074
Long name: Oil Pressure
Short name: Oil-P
Minimum value: 0
Maximum value: 10
Scale factor: x1
Unit type: bar
Equation: ((A*256)+B)/1280
OBD header: 700

The results might not be accurate, because we use the same sensor as the ECU. Well, from my experience the values are valid and can be used to trigger a warning within Torque when going lower than 0.6 bar (idle with warmed up oil is around 0.9 to 1 bar).

PART 3

OBD2 Mode and PID: 221638
Long name: M/T Oil Temp
Short name: Trans-Oil
Minimum value: 0
Maximum value: 100
Scale factor: x1
Unit type: °C
Equation: A + B/256 - 40
OBD header: 700

Because I don't know where this sensor is located I can't verify the output data. At least the measured temperature after standing a night in the cold is similar to the temperature measured with my home weather station. After a smooth 30km run the displayed temperature was at 55°C (which also sounds valid).

Bye for now Fred

PS: @dvim please feel free to use any of my findings in your opening message, I'm just "a volunteer"

 

PART 4

OBD2 Mode and PID: 221021
Long name: B+ Battery
Short name: B+
Minimum value: 0
Maximum value: 20
Scale factor: x1
Unit type: V
Equation: A/10
OBD header: 7C0

Ignition on should read ~12.2 V, engine running ~14.2 V for a healthy GR

Bye for now Fred

 

dear @AP756
thx for precious info

do you think that these PID will work also with OBDLink app or Carscanner pro app ??

 

They should work in any program which accepts to enter custom PIDs. Never used the two programs you mentioned, so IDK. Maybe it's time to change to Torque Pro? ;-)

Bye for now Fred

 

Awesome stuff from @AP756! These measurements are inline with my findings as well. Updated the first post table and the link to exportedPIDs.csv for easy import into Torque app.

 

It's quite tricky to get PIDs working just from the results you have as a start . Knowing what it should be is a good start. In case of ExDID_1F07 I think it's just ignition retard, but I'm far away from sure...

If anybody has an idea how to read the fuel level in tank I'm interested (after hitting 48.6 liter = 12.8 gal when refueling...). It gives some reassurance knowing the remaining fuel level.

Bye for now Fred

 

So frustrating! Imported the csv update and theyre showing in the custom PID in Torquepro but when I test them it comes up with "no data"

 

Well, numerous reasons are possible. To name but a few: Program settings, OBD2-adapter not capable enough, data corrupted, ...

In my experience it's mostly the adapter. Proved are Carista, OBDlink (SX, MX) and some no-name adapters I can't remember. Go with the recommendation in Torque and it should work.

Bye for now Fred

 

I think, it's time to revive this thread with some input .

Did some experimentation today and found a formula which works for my GRY and the % of pressing the accelerator pedal. Well, this information might not be essential for driving, but it's fun to see how steady your right foot can be :

OBD2 Mode and PID: 221059
Long name: Accelerator Pedal
Short name: Accel Ped
Minimum value: 0
Maximum value: 100
Scale factor: x1
Unit type: %
Equation: (A-41)/1.42
OBD header: 700

After PID setup (equation should read just A) go into your car, start Torque and switch on ignition. Don't touch the accel pedal, just read out the value (in my case 41). Now edit the PID settings and correct the zero point in equation (for me it was A-41). After restaring Torque the accel pedal reading should be zero.
Now fully press the accel pedal, the reading should change to 100%. If not just adapt the multiplicator (in my case the equation now is (A-41)/1.42 ) until you reach 100%. Now you got a new working pedal indicator.

Bye for now Fred

PART 2

Today I looked after oil pressure. My attempt is to try any formula given to me, verify the output and if needed adjust the results, verify again (and so on). In case of the oil pressure it was easy, only two iterations to get it working.

NOTE: The results of any measurement are not absolute, they are valid if you compare and they are "close to reality". There are numerous factors who interfere with a good result (e.g. a calibrated sensor will cost beyond €500.-). So we have to be lucky to get results within 2% wrong readings. But I think that's good enough.

OBD2 Mode and PID: 221074
Long name: Oil Pressure
Short name: Oil-P
Minimum value: 0
Maximum value: 10
Scale factor: x1
Unit type: bar
Equation: ((A*256)+B)/1280
OBD header: 700

The results might not be accurate, because we use the same sensor as the ECU. Well, from my experience the values are valid and can be used to trigger a warning within Torque when going lower than 0.6 bar (idle with warmed up oil is around 0.9 to 1 bar).

PART 3

OBD2 Mode and PID: 221638
Long name: M/T Oil Temp
Short name: Trans-Oil
Minimum value: 0
Maximum value: 100
Scale factor: x1
Unit type: °C
Equation: A + B/256 - 40
OBD header: 700

Because I don't know where this sensor is located I can't verify the output data. At least the measured temperature after standing a night in the cold is similar to the temperature measured with my home weather station. After a smooth 30km run the displayed temperature was at 55°C (which also sounds valid).

Bye for now Fred

PS: @dvim please feel free to use any of my findings in your opening message, I'm just "a volunteer"

Excellent! I can now get oil pressure on my my screen via OBD2AA but the odd thing is it displaying psi not bar even though that's what I have entered in Torque Pro!

 

yes.....
me too PSI

is there a way to have BAR ??

 

I'm up and running. Excellent work ?

 

OBD2 Mode and PID: 221074
Long name: Oil Pressure
Short name: Oil-P
Minimum value: 0
Maximum value: 10
Scale factor: x1
Unit type: bar
Equation: ((A*256)+B)/1280
OBD header: 700

The results might not be accurate, because we use the same sensor as the ECU. Well, from my experience the values are valid and can be used to trigger a warning within Torque when going lower than 0.6 bar (idle with warmed up oil is around 0.9 to 1 bar).

Thank you! You're a damn wizard! ?

 

Teaser ;-)

Bye for now Fred

 

Teaser ;-)

View attachment 28515

Bye for now Fred

What do you use to get that output on your screen not OBD2AA obviously?

 

Is anyone able to get the oil pressure to read with an ELM 427 bluetooth OBD adapter? Ive got all the settings in etc but no data coming through for oil pressure.

 

Have no ELM427 (my units are all ELM327). Best is to look at the Torque-Wiki which is located here

Bye for now Fred

 

Is it possible to Show Tire pressure With a pid from the original Tyre Sensors?

 

Eddy, should be possible, if...
...you got a valid PID
...the ECU "understands" this PID
...you get the formula to extract the correct information for each sensor
...you know which OBD header has to be used
then it should be possible. Do you got a PID to test?

Bye for now Fred

 

My use of this has now stopped completely today which is extremely annoying. Appears there was an Android Auto update last day or so which once installed stops Screen2Auto and OBD2AA from appearing on the main AndroidAuto layout on the cars screen! Anybody else seeing this?

 

Same thing.

Worked fine in the morning but no life at the evening.. Didn't even update the phone. Tried to install older version of AA (6.9x and 6.8x) and it first shows OBD2AA in the list, but if you close AA and reopen it, AA is gone again. Also same thing happened for Fermata. HUGE bummer.

Going to use Torque from the phone screen for now.

 

Change is part of development. There will be a solution, time will tell.

Bye for now Fred

 

Same for me no OBD2AA option. Track day on Saturday hopefully there is an update for

 

For the moment it still works for me

 

Could there be a difference if you have install the "file a" or "file b" from XDA?

I have install "file b" and it still work, I have tried several times this evening

 

Someone on XDA said this

For me, it works the first time after deleting all data from aa app.

Do not really get what he means but if there is a cache that you can delete it should work but only for one restart.

 

I think this issue is more phone model dependant. Tried to install A and B option. Also cleared caches etc between etc.

Still only showing apps once, but not on the second try.

I'm using Huawei P20 with android 10.