Praying helped

This week the case arrived with the diagnostic computer, 2 adapters for car and truck and the connection cable as well as the OBD cable.
Before I make any changes, I need to back up the data on the laptop.
I had already met Kelly, the head of IT.
He explained to me that he can’t make a backup because Windows runs in the German language version. I didn’t understand why this was important for a “disk clone”, i.e. mirroring the hard drive, but we arranged to meet at 8 a.m. the next day to tackle it together.
The next morning I already had a guilty conscience because I was 5 minutes late.
But don’t stress, Kelly is not there yet either. Then I called him, “yes, he’ll be here in a minute”. In Ghana, the sense of time is different from what I know. Well, it’s also very hot here, and everything goes a bit more comfortably and slowly.
So we start again and first switch Windows to English. Not so easy, as the language has to be installed first, which doesn’t work right away.
Error message #80070422
Kelly says; all right he knows the problem, it’s the internet connection, disappears and comes back with a WLAN box with 4G.
But that’s not it either.
Then Kelly activated the admin account – I wouldn’t even know how to do that.
Together we shimmied our way through it. I translated it for him and he told me where to press. We have worked our way into the depths of the hidden Windows registry entries. But nothing worked, we just can’t get this stupid English language installed.
Someone has done a great job of locking down the system to prevent any updates.
So we just leave the Windows language in German.
I then changed the programmes to English, which should now work.

In the afternoon then the test with the whole team on the car.

I would have liked to have a newer car, but they got the probably oldest car with the smallest equipment, a Hyundai I10. On top of that, the battery is pretty much at the end of its life, so they have to run the engine. There is no such thing as a charger to support the on-board network during diagnostics.
So I plugged the thing in and it works halfway. The manual says you can read out the VIN via diagnostics. Most of the time you can – but not with the Hyundai I10. After a bit of trial and error it worked and we read out the engine control unit and saw the voltage values of the sensors as well as the engine speed live on the laptop. I’m relieved because the thing does what it’s supposed to do. But I wasn’t entirely happy, because I’m used to BMW displaying the VIN and the complete list of installed control units with their errors.
I found the error later.
Only the OBD diagnosis for the engine control unit works, for the other control units an undocumented command is used, which only the Hyundai test units know.
In addition, not all ECUs are connected to CAN and the standard pins 3 and 11. The airbag control unit, EPS, and one other are connected to the diagnostic connector via a serial line; I can’t even tell if it’s LIN or some other protocol. How do I know about the pins?

It’s in the service manuals I found for the I10. It cost $70, but with about 13 cars of the same type, it was a good investment for the company. The document is individually created for a VIN and contains all the wiring diagrams, all the service information and all the DTC with description on how to fix the faults. All in all, about 1,800 pages.
Next week we’ll try it with a newer car and the bus. The bus is going to be exciting.