Test P: Air Bag Tone Warning Indicator Circuit Short To Ground Or Open (DTC B1892): Description
WARNING: This page is about a different car, the 2002 Ford Pickup, 2002 Ford F550 Super Duty, 2002 Ford F450 Super Duty, 2002 Ford Excursion, and 2002 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Restraints Control Module (RCM) monitors its connection to instrument cluster at RCM connector terminal No. 26 (Light Blue/Black wire). This connection is used to signal a chime if AIR BAG warning light is inoperative and another air bag system fault exists. If RCM detects a short to ground or open in connection to instrument cluster, it will store Diagnostic Trouble Code (DTC) B1892 in memory.