Hello,
Can you try the scanner in another car to confirm the scanner operation? then lets check the ALDL fuse #30 in the under hood fuse panel. here is a guide and the wiring diagrams so you can see how the system works and the fuse location:
https://www.2carpros.com/articles/how-to-check-a-car-fuse
Check out the diagrams (below). Please let us know what happens.
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Monday, April 8th, 2019 AT 1:01 PM