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Engine Control Module Programming and Setup

Special Tools

EL-49642 SPS Programming Support Tool

For equivalent regional tools, refer to Special Tools

The following service procedures require either a programming or a setup event performed for a complete repair.

Note: 

   • DO NOT program a control module unless directed to by a service procedure or a service bulletin. If the ECU is not properly configured with the correct calibration software, the ECU will not control all of the vehicle features properly.
   • Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector. If there is an interruption during programming, programming failure or ECU damage may occur.
   • Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. Install the EL-49642 SPS Programming Support Tool to maintain system voltage. If not available, connect a fully charged 12 V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger.
   • Turn OFF or disable systems that may put a load on the vehicles battery such as; interior lights, exterior lights (including daytime running lights), HVAC, radio, etc.
   • During the programming procedure, follow the SPS prompts for the correct ignition switch position.
   • Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO.

ECM Replacement

If the engine control module (ECM) is replaced, the following procedures must be performed:

  1. Connect a scan tool to the vehicle and access Service Programming System (SPS).
  2. Before removing the old control module, perform the SPS function Prepare Control Module for Removal.

    3. Note: The Prepare Control Module for Removal function can only be performed when communication with the old control module is still possible.

  3. Vehicle OFF, replace the ECM. Refer to Engine Control Module Replacement .
  4. Perform the SPS function Engine Control Module - Programming and follow the onscreen instructions.
  5. Perform the SPS function Engine Control Module - Configuration & Setup and follow the onscreen instructions. On the screen Control Module - Configuration and Setup Function(s), select both control module Configuration/Reconfiguration and the appropriate control module Setup.
  6. Clear DTCs after completing the programming procedure.
  7. Vehicle ON, engine running.
  8. If the SPS function Prepare Control Module for Removal could not be performed, perform the following:

    9. Engine Oil Life Remaining. When available, use a scan tool to reset the Engine Oil Life back to the original percentage recorded before the module was replaced.

ECM Reprogramming

If the ECM needs to be reprogrammed, the following procedures must be performed:

  1. Connect a scan tool to the vehicle and access SPS.
  2. Perform the SPS function Engine Control Module - Programming and follow the onscreen instructions.
  3. Engine Oil Life Remaining. When available, use a scan tool to reset the Engine Oil Life back to the original percentage recorded before the module was reprogrammed.

Setup for Component Replacement

The replacement of some components will require a setup procedure for complete repair.

To speed up the learn process perform the scan tool Fuel Trim Reset function if any of the following components are replaced:

    • Manifold absolute pressure sensor
    • Accelerator pedal position sensor
    • Throttle Body
    • Heated oxygen sensor
    • Fuel injector
    • Crankshaft position sensor
    • Camshaft position sensor
   


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