Tests AL: LFC 15/DTC B1887 - Driver Air Bag CKT Shorted to Ground

Pinpoint Test AL1:

Pinpoint Test AL2:

Pinpoint Test AL3:

Pinpoint Test AL4-AL5:

Pinpoint Test AL6:

Pinpoint Test AL: LFC 15/DTC B1887 - Driver Air Bag Circuit Shorted to Ground

Normal Operation

The Restraints Control Module (RCM) checks for driver air bag circuit shorts to ground by monitoring the voltage of circuits 614 (GY/OG) and 615 (GY/WH) 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 614 (GY/OG).
- a short to ground on circuit 615 (GY/WH).
- a short to ground on the clockspring.
- a short to ground on the driver air bag module.
- an RCM internal concern.