Test Notes

Normal Operation
The air bag diagnostic monitor measures the voltage at Pin C232-2, Circuit 614 (GY/O), Pin C232-3, Circuit 615 (GY/W), Pin C232-4, Circuit 616 (PK/BK) and Pin C232-5, Circuit 607 (LB/O). The voltage at these pins varies with charging system voltage. If the air bag diagnostic monitor measures a voltage of more than five volts on any of these pins, it will store a Diagnostic Trouble Code (DTC) B1922 in memory and flash a Lamp Fault Code (LFC) 22 on the air bag indicator to indicate a possible short to battery voltage on these circuits. Should the unexpected high voltage on Pin C232-2, Circuit 614 (GY/O), Pin C232-3, Circuit 615 (GY/W), Pin C232-4, Circuit 616 (PK/BK) or Pin C232-5, Circuit 607 (LB/O) be repaired or intermittent, the air bag diagnostic monitor will store a DTC B1922 in memory.

Possible Causes
High voltage at air bag diagnostic monitor Pins C232-2, C232-3, C232-4 or C232-5 can be caused by:
- a short to battery or ignition on Circuits 607 (LB/O), 614 (GY/O), 615 (GY/W) or 616 (PK/BK), causing the diagnostic voltage to rise.
- a short in the air bag sliding contact between Circuits 614 (GY/O) or 615 (GY/W) and the horn or speed control wiring.
- an internal air bag diagnostic monitor short across the normally open contacts of the safing sensor.