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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 667 (Engine Controls - Description And Operation (Except Diesel & Hybrid)) >> Powertrain Control Software >> Flash Electrically Erasable Programmable Read Only Memory (EEPROM)

Flash Electrically Erasable Programmable Read Only Memory (EEPROM)

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The flash EEPROM is an integrated circuit (IC) within the PCM. This IC contains the software code required by the PCM to control the powertrain. One feature of the EEPROM is that it can be electrically erased and then reprogrammed without removing the PCM from the vehicle. If a software change is required to the PCM, a new module is no longer necessary as the current one can be reprogrammed through the data link connector (DLC).

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