Help with Airbag Light on Dash 2005 Silverado 1500

[Wiggin]

Have a B0100 and B0104 code. I removed both impact sensors and checked them for resistance and they were both around 12 ohms. I ordered some used replacements off of Ebay that came in around 13 ohms. Neither worked. I checked all wiring underneath the seats and checked all connections of plugs to make sure they were snug. I ran a diagnostic tool on the SIR and it came back Active Switch not present and Driver Side Impact Sensor not present and Driver Side Loop not present.  I included the PDF's of the Scan along with JPEG images of them.  I am at a loss on this one.  There is a switch part number 15115221 underneath the passenger seat.  Any help would be greatly appreciated.

Josh

Silverado1.pdf Silverado2.pdf

[Wiggin]

I saw no breaks in any of the wires and the connectors to the impact sensors also appeared to be good.

[David89GMC]

This would come under the heading of "any help", because I just want to provide something for you.

Did you check each wire for ground or voltage?

From what I can tell, the resistance should be less than 3 ohms, not 12 ohms. Many circuits "generate" analog values which the hardware reads. Others are "digital" and provide on/off indications. My guess is these sensors are read as analog values, which changes according to resistance. A four fold change in resistance may be enough to generate an error code.

Will your local auto parts store allow you to measure the resistance of a new sensor? I know these things are ridiculously expensive, but you might buy one and try it in each position to see if either code gets cleared. That "side impact" error is concerning, as it may indicate a processing module problem.

[Wiggin]

I found a another post on this forum where somebody tested new Dorman sensors at 19.7 and 20.2 ohms.