Test F: Driver Air Bag Circuit Short To Ground (DTC B1887): Description

RCM checks driver-side air bag module circuit for shorts to ground by monitoring voltage at RCM harness connector terminals No. 3 (Violet wire) and No. 4 (Black/Orange wire). If RCM detects short to ground on either terminal, it will store DTC B1887 in memory and flash Code 15 on AIR BAG warning light.