Test S: Driver-Side Air Bag Circuit Short To Ground (DTC B1936): Description
WARNING: This page is about a different car, the 2004 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.
Restraints Control Module (RCM) checks driver-side air bag module circuits for short to ground by monitoring voltage at RCM harness connector terminals No. 1 (Gray/Orange wire, circuit No. 614) and No. 2 (Gray/White wire, circuit No. 615). If RCM detects short to battery or ignition voltage in either terminal, it will store Diagnostic Trouble Code (DTC) B1936 in memory and flash Code 19 on AIR BAG warning light.