What powers pin 16 (+12V) on OBD port?

themadgrenadier_182103
Fri, 02 Sep 2022 14:00:53 +0000
General Discussion

I’ve been trying to track down where the OBD port pin 16 gets it’s 12V supply from with no luck.
I’m guessing cars can vary, but it seems like something in mine can momentarily disconnect that supply when the car is off and I’m a bit baffled by it. I don’t know how long it loses power for, could be a fraction of a second but it does seem to happen.

In my specific case, it’s a 2019 Hyundai Accent.

Any ideas?

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