Enable Criteria (Passive Test)

WARNING: This page is about a different car, the 2001 GMC Savana, 2001 Chevrolet RV Cutaway, 2001 Chevrolet Cutaway, and 2001 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

Engine Coolant Temperature (ECT) is 158-230°F (70-110°C).
Intake Air Temperature (IAT) is 36-212°F (2-100°C).
Battery voltage is more than 11.7 volts.
Active test, if required, begins after engine goes into closed loop.