Test Notes

NORMAL OPERATION
The air bag diagnostic monitor measures the resistance across pin 8, circuit 8 (W/P) and pin 9, circuit 31S (BK/W) every time the ignition switch is turned to RUN. Normal resistance across these circuits is between 0.9 ohm and 1.1 ohm. This resistance comes from the passenger side air bag module itself. If the resistance across these two circuits exceeds 4.0 ohms, the diagnostic monitor will flash code 33.

NOTE: The connector for the passenger side air bag module has a metal spring clip that acts as a shorting bar. This shorting bar is built into the plastic hard-shell connector on the back of the passenger side air bag module. The shorting bar is designed to short the air bag terminals together when the connector is not mated. Do not attempt to remove the passenger air bag shorting bar and measure the resistance of the passenger side air bag module.

POSSIBLE CAUSES
A high resistance or open in the passenger side air bag module assembly circuit can be caused by:

1. An open circuit or high resistance in the wiring harness in circuit 8 (W/P), 29 (O/W) or 31S (BK/W).
2. An open circuit or high resistance in the passenger side air bag module. Do not attempt a direct resistance measurement of the passenger side air bag module. Follow the diagnostic procedures to determine if the air bag resistance is higher than normal.