Airbag Gremlin

[recklessspyder]

Airbag light came on for the passenger rear curtain while I was driving. It was subsequently cleared by the Indy. It came back a few days later.

What would be the best course of action to diagnosing if it's a bad airbag or a wiring issue.

Having difficulty pulling up a wiring diagram, so if someone could help I would appreciate it. Would any of the wiring be at risk of corrosion?

I guess the other option is to find one on ebay and swap it...$50 plus my time pulling down the headliner.