no communication

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.