Test Notes

Normal Operation
The air bag Electronic Crash Sensor (ECS) module monitors its connection to the Lighting Control Module (LCM) at Pin 13. This connection is used to signal a chime if the air bag indicator is inoperative and another SRS fault exists. If the ECS detects a short to ground or open on the connection to the LCM, it will store a Diagnostic Trouble Code (DTC) B1892 in memory.

Possible Causes
An air bag tone warning indicator circuit short to ground or open could be caused by:
^ a short to ground or open on Circuit 257 (W/R).
^ a damaged or inoperative LCM.