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.
SDM failed to receive a valid ID message after resetting SIS twice.