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Incorrect ECM Programming

  1. There are only a few situations when reprogramming a ECM is appropriate, such as the following:
    • A new service ECM is installed.
    • A ECM from another vehicle is installed.
    • Revised software or calibration files have been released for this vehicle.
    NOTE: DO NOT reprogram the ECM with the SAME software or calibration files that are already present in the ECM. This is not an effective repair for any type of driveability problem.
  2. Verify that the ECM contains the correct software or calibration. If incorrect programming is found, reprogram the ECM with the most current software or calibration. See POWERTRAIN CONTROL MODULE  under PROGRAMMING.
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