Test E: LFC 15/DTC B1887 - Driver Air Bag Circuit Short to Ground

Pinpoint Test E1:

Pinpoint Test E2:

Pinpoint Test E3:

Pinpoint Test E4-E6:

Pinpoint Test E: LFC 15/DTC B1887 - Driver Air Bag Circuit Short to Ground

Normal Operation

The air bag Electronic Crash Sensor (ECS) module checks for driver air bag circuit shorts to ground by monitoring the voltage of circuits 614 (GY/OG) and 615 (GY/WH) at pins 1 and 15. If the ECS 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 damaged or inoperative ECS module.