Circuit Description
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.
When ignition switch is turned to RUN position, SDM performs tests to diagnose critical internal malfunctions. DEPLOYMENT LOOP VOLTAGE test is performed to ensure voltage is within normal range. If voltage test does not detect out of range condition (due to short to voltage), SDM then performs DEPLOYMENT LOOP RESISTANCE test. Resistance test will not be performed if voltage test detects out of range condition, due to short to voltage.