Conditions for Running the DTC
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
The microprocessor runs the program to detect a ROM check sum error after each power up. The only requirements are voltage and ground. This program runs even if the voltage is out of the valid operating range.