Circuit Description
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
As part of normal data processing, the module performs a data programming check on its writes to the electrically erasable programmable read only memory (EEPROM). The EEPROM write error detection is handled inside the control module. No external circuits are involved.