Conditions for Running the DTC
WARNING: This page is about a different car, the 2002 Pontiac Montana, 2002 Oldsmobile Silhouette, and 2002 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
The microprocessor runs the program to detect a check sum error after each power up. This program runs only if the DTC B1327 is not set as a current DTCs.