Powertrain Control Module

Replacement of Powertrain Control Module (PCM) should normally consist of either replacement of PCM or electrically erasable programmable read only memory (EEPROM) programming. If diagnostic procedures call for PCM replacement, verify PCM first, to see if replacement is the correct part. If the PCM is faulty, remove the PCM and install new service PCM. The new service PCM will not be programmed. You must program new PCM. DTC P0602 indicates the EEPROM is not programmed or has malfunctioned. See appropriate COMPUTER RELEARN PROCEDURES in GENERAL INFORMATION article.