Not sure if I am 100% correct, but my interpretation would be that there is a sensor located on/around the left side of the radiator, as view from the drivers seat. Find the sensor and check the plug and wires running to it. As always when working on the SRS, disable it first.
I was a Shade Tree Mechanic, but had to cut down the Shade Tree to make room for the garage. Does this make me a Mechanic now?