Test M: LFC 16/DTC B1888 - Passenger Air Bag Circuit Shorted to Ground

PINPOINT TEST M: LFC 16/DTC B1888 - PASSENGER AIR BAG CIRCUIT SHORTED TO GROUND

M1-M3:

M3-M5:

Normal Operation
The restraints control module (RCM) checks for passenger air bag circuit shorts to ground by monitoring the voltage of circuits 607 (LB/OG) and 616 (PK/BK) at pins 6 and 7. If the RCM detects a short to ground on either of these pins, it will store a diagnostic trouble code (DTC) B1888 in memory and flash a lamp fault code (LFC) 16 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
A passenger air bag circuit short to ground could be caused by:
- wiring, terminals or connectors.
- a short to ground on the passenger air bag module.
- a faulted RCM.