Test B: Air Bag Warning Light Circuit Open Or Short To Ground (DTC B1869): Description

AIR BAG warning light is designed to illuminate for 6 seconds when ignition switch is turned to RUN position. The initial 6-second illumination is normal and is called prove-out. The AIR BAG warning light is then used to warn vehicle operator that there is a fault in the air bag system.

Restraints Control Module (RCM) monitors AIR BAG warning light for open and short to ground conditions. If RCM detects open or short to ground in AIR BAG warning light circuit, it will store Diagnostic Trouble Code (DTC) B1869 in memory. If RCM detects AIR BAG warning light failure in addition to another air bag system failure, the secondary air bag warning system will be activated.