Converter Warm-Up Test
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1997 GMC Yukon, 1997 GMC Suburban, 1997 GMC Pickup, 1997 GMC Cab & Chassis, and 1997 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
- Vehicle is in "closed loop" fuel control.
- Commanded air/fuel ratio equals 14.7:1.
- MAP sensor pressure is greater than 15 gm/s.
- Predicted catalyst warm up temperature is greater than 842°F (450°C).