Test Notes

Normal Operation
The air bag Electronic Crash Sensor (ECS) module checks for passenger air bag circuit shorts to ground 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 ground on either of these pins, it will store a Diagnostic Trouble Code (DTC) B1888 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 ground on Circuit 607 (LB/O).
^ a short to ground on Circuit 616 (PK/BK),
^ a short to ground on the passenger air bag module.