Airbag light on/no communication with scan tool

I had an airbag light that was intermittently on. If I restarted the truck it sometimes went off. It is now on all the time. I had a friend hook up his scan tool and it says no communications. It does communicate and is able to check other parts of the vehicle (engine for example). I checked the fuse and connector at he module located under center console. Fuse good and the connector is clean and secure. The only thing I can see is the lower steering cooler line leaked and some may have dripped on the driver's side air bag sensor/switch. I cannot pull any airbag codes without being able to communicate with the scan tool. Any ideas/help on what I should do next? The driver's side air bad switch/module is $170.00. I do not want to throw parts at it.