Flash Electrically Erasable Programmable Read Only Memory (EEPROM)

The flash EEPROM is an integrated circuit (IC) within the powertrain control module (PCM) and the fuel injection control module (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, the modules no longer need to be replaced, but can be reprogrammed. The reprogramming is carried out through the data link connector (DLC).