Test Notes

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/O) 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 driver air bag circuit short to battery or ignition could be caused by:
^ a short to battery or ignition on Circuit 607 (LB/O).
^ a short to battery or ignition on Circuit 616 (PK/BK).
^ a short to battery or ignition on the passenger air bag module.