Conditions For Setting DTC

WARNING: This page is about a different car, the 2000 Buick Park Avenue. However, it is still accessible from the selected car via links, so may be relevant.

DTC sets when driver-side SIS deployment loop tests are not within specified ranges.

DTC will set if DRIVER-SIDE SIS LOOP tests are within the following ranges:

IGNITION POSITIVE VOLTAGE is within normal operating range.
Deployment loop is not shorted to voltage.
Deployment loop is not shorted to ground.
No valid ID message is received within 5 seconds of power up.
Status message not received.
SDM failed twice to reset SIS.