Ok, so the problem is not the cd3215s. But i have fluctuating pp3v3_s5 and pp5v_s5, etc...
What should i check now? Who can be the culprit?

Thanks for your response, i actually don't get it, after retrying to measure voltages i get all LDOs except the pp1v1_upc_ta_ldo_bmc (0v) but i get 20v 0.06 amps on charger ! If i have 0v on that pin i shouldn't get 20v right? And all the cd3215s are not working properly but i get 20v on charger on a specific port how is that even possible because all CD3215s should work properly in order to make a communication between all of them and get 20v on charger, that's what i've read. I'm actually really confused. I don't know what to do actually any help will be really appreciated.

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Hello everyone,

I'm currently diagnosing a MacBook Pro A1707 motherboard that does not power on. I've gathered some data but am stuck and need expert advice.
Note that i'm a beginner in electronics and i'm trying to learn while trying to repair this macbook that my work gave me. I'm really curious and love understanding how thing works and i already learned so much.

Only one usb c port is taking 20v and have 12.5v on PPBUS_G3H. when trying other ports, 2 are not going to 20v and one is going to 20v but the CD3215 is getting really hot.

Observations...

Hi, i'm learning electronics at home and i'm really curious and want to learn more about the electronics world. So that's why i'm here !