Circuit Description
WARNING: This page is about a different car, the 2003 GMC Sonoma and 2003 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic applies to internal microprocessor integrity conditions within the control module. This diagnostic also addresses if the control module is not programmed. The following DTCs are diagnosed in this test:
- P0601 - Control Module Read Only Memory (ROM)
- P0602 - Control Module Not Programmed
- P1621 - Control Module Long Term Memory Performance
- P2610 - Control Module Performance