Raven is correct, there is no mechanism to disable the front passenger air bag. This is confirmed in the owner's manual. The manual also states "NEVER put a rear-facing child seat in the front"
The owner's manual dedicates three pages to child restraints and five full pages to the Supplemental Restraint System (the airbags) which are festooned with warnings and cautions. To read it all visit the Owner Manual thread to download the manual, and start with page 4.9