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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1397 (Body Control System) >> Diagnostic Information and Procedures >> DTC B1007: Electronic Control Unit (ECU) Performance >> Action Taken When the DTC Sets

Action Taken When the DTC Sets

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The module writes to another area of the EEPROM, this becomes the new permanent area to store the data. The data location is allowed to change until all of the available EEPROM is used. If a B1004 DTC is also set, the module reverts to base operation values programmed for those blocks of data that have failed. The blocks of data that have not failed the checksum test are not affected.

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