Test Notes

All System Air Bags Open Circuit

NORMAL OPERATION
The air bag diagnostic monitor checks for continuity across the driver side air bag module and passenger side air bag module. If the air bag circuits (Circuits 614 (GY/O) and 615 (GY/W) and 616 (PK/BK)) are open, the air bag diagnostic monitor will flash diagnostic trouble code 31. Note that diagnostic trouble code 31 will not flash unless both air bag circuits are open.

NOTE: The connectors for the air bags and the air bag sliding contact have metal spring clips that act as shorting bars. These shorting bars are built into the plastic hardshell connectors. The shorting bars are designed to short Circuits 614, 615 and 616 together when the connectors are not mated. Do not attempt to remove the air bag shorting bar and measure the resistance of the air bag.

The air bag sliding contact shorting bar may be removed to measure the air bag sliding contact resistance. Use extreme care when reinstalling the shorting bar to ensure it is installed correctly.

POSSIBLE CAUSES
Open circuits in all the system air bags can be caused by:

A broken connection between the air bag diagnostic monitor and both air bags. Circuits 614 (GY/O), 615 (GY/W) or Circuit 616 (PK/BK) may have an open wire.