Test Notes

Normal Operation

NOTE: The air bag module connector, air bag diagnostic monitor harness connector, and the air bag sliding contact connector have metal spring clips that act as shorting bars. These shorting bars are built into the plastic hard-shell connectors. The shorting bars are designed to short Circuits 614(GY/O) and 615(CY/W) 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 module.

NOTE: The air bag sliding contact shorting bar may be removed to measure the air bag sliding contact resistance. Likewise, the shorting bar(s) in the air bag diagnostic monitor harness connector can be removed by removing the black spacer (locking wedge) from the connector. Use extreme caution when reinstalling the shorting bars to make sure they are installed correctly.

While the ignition switch is in the RUN position, the air bag diagnostic monitor runs periodic checks on the resistance of the driver air bag module circuits.

Normal resistance from Pin C209-2, Circuit 614(UY/O), (driver air bag module feed) to Pin C209-3, Circuit 615 (GY/W), (driver air bag module return) is between 1.4 ohms and 2.0 ohms. This resistance total results from the sum of the components in the circuit: the air bag module (approximately 1 ohm) and the air bag sliding contact (0.20 ohm to 0.35 ohm per winding, 2 windings total) plus a small amount of resistance due to the wire itself, crimps, etc.

If the resistance across these two pins exceeds 3.0 ohms. the air bag diagnostic monitor will interpret this as high resistance and store in memory Diagnostic Trouble Code (DTC) B1932 and flash a Lamp Fault Code (LFC) 32 on the air bag indicator.

If the high resistance is later repaired or otherwise falls into the normal range, DTC B1932 will be stored in memory.

Possible Causes
Excessive resistance across Pins C209-2, Circuit 614(GY/O) and C209-3, Circuit 615(GY/W) can be caused by:
^ a poor connection or corrosion where the air bag sliding contact connects into the main wiring harness. The air bag sliding contact connector at the base of the steering column can have excessive resistance between the male and female terminals in the connector. Also, corrosion can occur on the terminal crimps on both the air bag sliding contact terminals and the main wiring harness terminals.
^ an open circuit or high resistance in the air bag sliding contact windings inside the air bag sliding contact.
^ an open circuit or high resistance in the wiring harness in either Circuit 614(GY/O) or Circuit 615(GY/W).
^ an open circuit or high resistance in the driver air bag module. Do not attempt a direct resistance measurement of the air bag module. Follow the diagnostic procedure to determine if the air bag module resistance is higher than normal.