EEPROM

DESCRIPTION AND OPERATION
The Electronically Erasable Programmable Read Only Memory (EEPROM) is a permanent memory that is physically soldered within the Powertrain Control Module (PCM). The EEPROM contains program and calibration information that the PCM needs to control powertrain operation.

Unlike the Programmable Read Only Memory (PROM) used in past applications, the EEPROM is not replaceable. If the PCM is replaced, the new PCM will need to be programmed. Equipment containing the correct program and calibration for the vehicle is required to program the PCM.