Test F: LFC 15/DTC B1887 - Driver Air Bag CKT Shorted to GND

F1 - F2:

F3 - F4:

F5 - F6:

Normal Operation
The Restraints Control Module (RCM) checks for driver air bag circuit shorts to ground by monitoring the voltage of circuits 30S-JA8 (RD/OG) and 31S-JA8 (BK/OG) at pins 3 and 4. If the RCM detects a short to ground on either of these pins, it will store a Diagnostic Trouble Code (DTC) B1887 in memory and flash a Lamp Fault Code (LFC) 15 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
A driver air bag circuit short to ground can be caused by:
^ a short to ground on circuit 30S-JA8 (RD/OG).
^ a short to ground on circuit 31S-JA8 (BK/OG).
^ a short to ground on the air bag sliding contact.
^ a short to ground on the driver air bag module.