Test G: LFC 16/DTC B1888 - Passenger Air Bag CKT Short to Ground

Pinpoint Test G1:

Pinpoint Test G2:

Pinpoint Test G3:

Pinpoint Test G4-G6:

Pinpoint Test G: LFC 16/DTC B1888 - Passenger Air Bag Circuit Short to Ground

Normal Operation

The air bag Electronic Crash Sensor (ECS) module checks for passenger air bag circuit shorts to ground by monitoring the voltage of circuits 607 (LB/OG) and 616 (PK/BK) at pins 14 and 28. If the ECS 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 damaged or inoperative ECS module.