Test H: LFC 16/DTC B1925 - Passenger Air Bag CKT Short to Batt or Ign

Pinpoint Test H1:

Pinpoint Test H2:

Pinpoint Test H3:

Pinpoint Test H4-H6:

Pinpoint Test H: LFC 16/DTC B1925 - Passenger Air Bag Circuit Short to Battery or Ignition

Normal Operation

The air bag Electronic Crash Sensor (ECS) module checks for passenger air bag circuit shorts to battery or ignition 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 battery or ignition on either of these pins, it will store a Diagnostic Trouble Code (DTC) B1925 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 battery or ignition can be caused by:
- a short to battery or ignition on circuit 607 (LB/OG).
- a short to battery or ignition on circuit 616 (PK/BK).
- a damaged or inoperative ECS module.