EEPROM Programming Procedure

NOTE: Refer to latest Isuzu Technical Communication System (ITCS) information for reprogramming or flashing procedures. Programming ECM/EEPROM requires the use of a scan tool and special manufacturer equipment.

The Electronically Erasable Programmable Read Only Memory (EEPROM) is a permanent memory that is physically soldered within the ECM. The EEPROM contains program and calibration information that the ECM needs to control powertrain operation.

Connect TECH 2 scan tool to DLC and retrieve program information from ECM. Ensure that battery is fully charged. Turn ignition on. Ensure that Vehicle Interface Module cable connection is securely connected to DLC. Follow scan tool instructions to program EEPROM using latest software available from ITCS. If ECM fails to program, recheck ECM connections. Ensure that most recent ITCS information is being used. Attempt to program ECM. If it still cannot be programmed properly, replace ECM. Reprogram new ECM, then perform ON-BOARD DIAGNOSTIC II SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM. Start engine and run for one minute. Use scan tool to check for any stored DTCs.