Flash Electrically Erasable Programmable Read Only Memory (EEPROM)

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