Test D: LFC 15/DTC B 1887 - Air Bag Driver Circuit Resistance Low or Shorted Together

PINPOINT TEST D: LFC 15/DTC B 1887 - AIR BAG DRIVER CIRCUIT RESISTANCE LOW OR SHORTED TOGETHER

D1-D3:

D3-D4:

D5-D7:

Normal Operation
The restraints control module (RCM) checks for a driver air bag module circuit short to ground fault 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 module circuit short to ground be caused by:
- wiring, terminals and connectors.
- a faulted clockspring.
- a faulted driver air bag module.
- a faulted RCM.