Tests AM: LFC 16/DTC B1888 - Passenger Air Bag CKT Shorted to GND

Pinpoint Test AM1:

Pinpoint Test AM2:

Pinpoint Test AM3:

Pinpoint Test AM4-AM5:

Pinpoint Test AM5:

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

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 can be caused by:
- a short to ground on circuit 607 (LB/OG).
- a short to ground on circuit 616 (PK/BK).
- a short to ground on the passenger air bag module.
- an RCM internal concern.