Need help Honda Civic D16Z6 P28 a02 wiring?

The B1 pin on my Ecu was burnt out, and the guy who had the car before me had it wired to ground. When I look online, I find multiple different answers as to what this pin is supposed to be for, either igp ground or sometimes igp power from the main relay, which are complete opposite. Just need help figuring out why this burnt out and if it is actually supposed to be connected to ground. It is a 95 civic 2 door 5 speed with the d16z6.

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