I am wondering if the 07 Matrix is ISO or CAN?
Also I doubt the 33290 is easy to blow, it's a nice little piece of electronic (containing about 75 transistors) used in a lot of diag tool.
Revert he TX/RX pins maybe? I don't remember if it was inverted or not in the diagram :-/
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2013 Hyundai Sonata Hybrid
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