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Home >> Cadillac >> 2015 >> CTS V, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System (Coupe) >> Diagnostic Information and Procedures >> DTC B1009: EEPROM Checksum Mismatch/Error >> Circuit/System Description
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Circuit/System Description

The electrically erasable programmable read-only memory (EEPROM) check sum error detection is handled inside the control module.