Programming and Relearning

Electrically Erasable Programmable Read Only Memory (EEPROM)
The electrically erasable programmable read only memory (EEPROM) is a permanent memory chip that is physically soldered within the PCM. The EEPROM contains the program and the calibration information that the PCM needs to control powertrain operation.

EEPROM Programming
Connect Tech 2 to the vehicle DLC and retrieve information from the PCM. Ensure that the following condition have been met:
- Battery is fully charged.
- The Ignition is in ON position.
- Tech 2 cable is securely connected to DLC.

Download latest program and calibration from ITCS. Always use latest ITCS software to program PCM. Refer to Up-to-date ITCS user's guide.




Reconnect Tech 2 to the DLC and program PCM.
- Make sure the ignition is recycled after information is retrieved.
- Ensure the ignition is stay in ON position after programming is started.

Functional Check
1. Perform the On-Board Diagnostic System Check.
2. Start the engine and run for least one minute.
3. Check for DTCs using Scan Tool.
4. If the PCM fails to program, proceed as follow:
- Ensure that all PCM connections are OK.
- Check the ITCS for latest version software.
- Attempt to program PCM again. If PCM still cannot be programmed properly, replace PCM. The replacement PCM must be programmed.