DTC B1009: Checksum Error In Control Module: Testing
WARNING: This page is about a different car, the 2002 Chevrolet Monte Carlo, 2002 Chevrolet Impala, 2001 Chevrolet Monte Carlo, and 2001 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
- Perform diagnostic system check for suspect system control module. See DIAGNOSTIC SYSTEM CHECK table under SELF-DIAGNOSTIC SYSTEM. Repair as necessary and go to step 4. If diagnostic system check has been performed for suspect system control module, go to next step.
- Check if DTC B1009 was set as a current DTC. If DTC B1009 was set as a current DTC, go to next step. If DTC B1009 was not set as a current DTC go to DIAGNOSTIC AIDS before proceeding to next step.
- Replace, suspect control module. Program and configure new control module. Go to next step.
- Using scan tool, clear DTCs. Operate vehicle within CODE ENABLE CRITERIA conditions. Using scan tool, retrieve DTCs. If DTC B1009 resets, return to step 2. If DTC B1009 does not reset, system is okay.