TPMS data through OBD / ECU

Hi, apologies for posting in English . There are a couple of long threads here relative to the TPMS system in the ND2 but I have no found anything relevant to my problem.

I would like to know if someone has tried to get the tires temperature and pressure data through a OBD2 adapter. I have been discussing about this in the American forum miata.net because there are users that are able to get these data using custom-configured PIDs with Torque app. However, I tried the same but it has been impossible so far. Although Torque is an Android-only app and I am using an iphone and then different apps, I have tried different configurations of PIDs to no avail. By monitoring the connection logs I can see that the queries to the same PIDs that work in the American cars come back with no data in my car.

I have been fighting with this for some time and exchanging data with the app developer and with the American colleagues but we don't find any explanation of why the EU cars don't seem to respond. So I wonder if someone here has ever tried this.

Zitat von Sebastian S.

While not owning a ND2 I just want to make sure on which ECU you're trying to fetch the PIDs. They should be available on either the Brake/ABS-ECU or on a dedicated one depending on how Mazda implemented the system.

Maybe you could share some screenshots

At Miata.net they are getting the PIDs with a 720 header and mode 22. Pressure PIDs are 2A05 to 2A08 and Temperature 2A0A to 2A0D, for the 4 wheels. I paste all the PIDs below but please note that the formulas are for psi and Farenheit degrees as units. Also, you can see more information and screenshots at the original thread (https://forum.miata.net/vb/showthread.php?t=708582) - I hope that it is OK to link it here

pid: 222A05
name: Tire 1 Pressure
sName: T1Press
Min: 0
Max: 50
Scale: x1
Unit: psi
Equation: ((A * 1373) / 1000) * 0.145037738
Header: 720

pid: 222A06
name: Tire 2 Pressure
sName: T2Press
Min: 0
Max: 50
Scale: x1
Unit: psi
Equation: ((A * 1373) / 1000) * 0.145037738
Header: 720

pid: 222A07
name: Tire 3 Pressure
sName: T3Press
Min: 0
Max: 50
Scale: x1
Unit: psi
Equation: ((A * 1373) / 1000) * 0.145037738
Header: 720

pid: 222A08
name: Tire 4 Pressure
sName: T4Press
Min: 0
Max: 50
Scale: x1
Unit: psi
Equation: ((A * 1373) / 1000) * 0.145037738
Header: 720

pid: 222A0A
name: Tire 1 Temp
sName: T1Temp
Min: 0
Max: 200
Scale: x1
Unit: F
Equation: (9/5 * (A - 50)) + 32
Header: 720

pid: 222A0B
name: Tire 2 Temp
sName: T2Temp
Min: -50
Max: 200
Scale: x1
Unit: F
Equation: (9/5 * (A - 50)) + 32
Header: 720

pid: 222A0C
name: Tire 3 Temp
sName: T3Temp
Min: -50
Max: 200
Scale: x1
Unit: F
Equation: (9/5 * (A - 50)) + 32
Header: 720

pid: 222A0D
name: Tire 4 Temp
sName: T4Temp
Min: -50
Max: 200
Scale: x1
Unit: F
Equation: (9/5 * (A - 50)) + 32
Header: 720

Well... I can confirm that TPMS sensors in EU cars also work with the same PIDs:

[Blockierte Grafik: https://live.staticflickr.com/65535/49399792446_ae4313de52_z.jpg]

My problem was with the cheap OBD2 ELM327 clone (v1.5). For some reason it did not work but no problem with an OBDLink Mx+ . I suspect that a MS-CAN protocol is needed to get the data

Just in case someone wants to try, below are the proofed PIDs configuration parameters with formulas for values in Bars and Celsius degrees. An OBDLink Mx or Mx+ adapter is recommended although others might work. This brand includes the software that allows configuring custom PIDs with these values (OBDLink). If you want to try other adapters, recommended apps are:

- Car Scanner ELM - iOS (free to try, <10 eur to buy) - Already has the sensors configured in the Mazda syactive connection profile
- Torque Pro - Android (<5 eur to buy) - The sensors can be configured as custom PIDs and the values can be sent to the infotainment screen using a mirroring plugin (OBD2AA)

pid: 222A05
name: Tire 1 Pressure
sName: T1Press
Min: 0
Max: 3.5
Scale: x1
Unit: bar
Equation: ((A * 1373) / 1000) /100
Header: 720

pid: 222A06
name: Tire 2 Pressure
sName: T2Press
Min: 0
Max: 3.5
Scale: x1
Unit: bar
Equation: ((A * 1373) / 1000) /100
Header: 720

pid: 222A07
name: Tire 3 Pressure
sName: T3Press
Min: 0
Max: 3.5
Scale: x1
Unit: bar
Equation: ((A * 1373) / 1000) /100
Header: 720

pid: 222A08
name: Tire 4 Pressure
sName: T4Press
Min: 0
Max: 3.5
Scale: x1
Unit: bar
Equation: ((A * 1373) / 1000) /100
Header: 720

pid: 222A0A
name: Tire 1 Temp
sName: T1Temp
Min: -20
Max: 180
Scale: x1
Unit: C
Equation: (A - 50)
Header: 720

pid: 222A0B
name: Tire 2 Temp
sName: T2Temp
Min: -20
Max: 180
Scale: x1
Unit: C
Equation: (A - 50)
Header: 720

pid: 222A0C
name: Tire 3 Temp
sName: T3Temp
Min: -20
Max: 180
Scale: x1
Unit: C
Equation: (A - 50)
Header: 720

pid: 222A0D
name: Tire 4 Temp
sName: T4Temp
Min: -20
Max: 180
Scale: x1
Unit: C
Equation: (A - 50)
Header: 720