Typically, MGG devices require 1.75a of current and 12V for at least 5ms.
Maybe yours is bad and that is the cause of your DTC. There could be something wrong with it internally. you can measure resistance and it should be 2 - 2.2homs. just check resistance on the MGG terminal wires, no need to blow it out just to check if it works, unless you want to do it just for fun.
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