Electronically Erasable Programmable Read Only Memory

If Powertrain Control Module (PCM) was replaced, EEPROM in PCM must be programmed. If EEPROM is not programmed, a Diagnostic Trouble Code (DTC) will be set in PCM.
Ensure battery is fully charged. If battery is being charged, ensure battery charger is disconnected before performing EEPROM programming procedure.
Ensure cable is properly connected on Data Link Connector (DLC). Turn ignition switch to RUN position. Perform EEPROM programming using Techline equipment manufacturer's instructions and latest software applicable for vehicle model.
Once EEPROM is reprogrammed, perform powertrain control module diagnostic system check. See POWERTRAIN CONTROL MODULE DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM. Ensure engine is idling for one minute before checking for DTCs when performing powertrain control module diagnostic system check. After EEPROM is reprogrammed, proper Crankshaft Position (CKP) sensor variation learn procedure MUST BE performed. See CRANKSHAFT POSITION SENSOR VARIATION LEARN PROCEDURE .
NOTE: If EEPROM programming fails, ensure all electrical connections on PCM are okay. Check Techline for latest software. If EEPROM programming still fails, replace PCM.