Checking the processor of the electronic control unit

[Mixa]

Greetings to all! Yes, I've seen this stuff.(https://rastrecurve.com/lista.php ) Good!. That's not the question, I may have phrased it incorrectly. I recorded the signatures from this processor, and after checking them, the signal on some pins did not match the recorded one. I checked it several times and the result was the same. Perhaps this is due to the peculiarities of the processor itself. Therefore, I decided to record signals from other components of the board, bypassing the processor and flash memory. What can you advise on this issue, is it so?