K71 Transmission Control Module: Programming and Setup (9T45 (M3U) or 9T50 (M3D M3H))

Special Tools

EL-49642 SPS Programming Support Tool

For equivalent regional tools, refer to Special Tools.

Note:

  • DO NOT program a control module unless directed to do by a service procedure or service bulletin. If the control module is not properly configured with the correct calibration software, the control module 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 control module damage may occur.
  • Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. When required, 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 (including daytime running lights), HVAC, radio, etc.
  • During the programming procedure, follow the SPS prompts for the correct ignition switch position.

Replace and Program Control Module

To program a replacement K71 Transmission Control Module (TCM), perform the following procedure:

  1. Replace the K71 Transmission Control Module.
  2. Install EL-49642 SPS programming support tool
  3. Access the Service Programming System (SPS) and follow the on-screen instructions.
  4. Perform one of the following SPS Programming functions:

      5. Note: If both controller options below are listed, select K71 Transmission Control Module

    • K20/ K71 Engine and Transmission Control Modules and follow the on-screen instructions
    • K71 Transmission Control Module and follow on-screen instructions.
  5. Perform the Refresh Characterization Data at the MCVM Characterization procedure, follow the on-screen instructions.
  6. Perform the Vehicle Setup, follow the on screen instructions.
  7. With a scan tool, clear DTCs from the K71 Transmission Control Module.
  8. Perform the scan tool configuration/reset function:Transmission Service Fast Learn—If available

    9. Note: If the transmission fluid temperature is not between 75 to 85°C (167 to 185°F)the scan tool will not allow the procedure to be performed.

  9. Ignition OFF for 2 minutes.
  10. All OK.

Reprogram Control Module

To program an existing K71 Transmission Control Module, perform the following procedure.

  1. Install EL-49642 SPS programming support tool.
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. Perform one of the following SPS Programming functions:

      4. Note: If both controller options below are listed, select K71 Transmission Control Module

    • K20/ K71 Engine and Transmission Control Modules and follow the on-screen instructions
    • K71 Transmission Control Module and follow on-screen instructions.
  4. Perform the Vehicle Setup, follow the on screen instructions.
  5. With a scan tool, clear DTCs from the K71 Transmission Control Module.
  6. Perform the scan tool configuration/reset function:Transmission Service Fast Learn—If available

    7. Note: If the transmission fluid temperature is not between 75 to 85°C (167 to 185°F)the scan tool will not allow the procedure to be performed.

  7. Ignition OFF for 2 minutes.
  8. All OK.

Reprogram Control Module after Transmission Repair/Replacement

To program an existing K71 Transmission Control Module, after a transmission repair/replacement, perform the following procedure:

  1. Install EL-49642 SPS programming support tool.
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. Perform one of the following SPS Programming functions:

      4. Note: If both controller options below are listed, select K71 Transmission Control Module

    • K20/ K71 Engine and Transmission Control Modules and follow the on-screen instructions
    • K71 Transmission Control Module and follow on-screen instructions.
  4. Perform the Refresh Characterization Data at the MCVM Characterization procedure, follow the on-screen instructions.
  5. Perform the Vehicle Setup, follow the on screen instructions.
  6. With a scan tool, clear DTCs from the K71 Transmission Control Module.
  7. Ignition OFF, allow vehicle systems to power down.

    8. Note: If may take up to 2 minutes for all vehicle systems to power down.

  8. Perform the scan tool configuration/reset function:Transmission Service Fast Learn—If available

    9. Note: If the transmission fluid temperature is not between 75°C (167°F)and 85°C (185°F) the scan tool will not allow the procedure to be performed.

  9. Ignition OFF for 2 minutes.
  10. All OK.

Unsuccessful Programming Recovery

In the event of an interrupted or unsuccessful programming event, perform the following:

  1. Ignition ON. Ensure the control module, DLC, and programming tool connections are secure and the SPS software is up to date.
  2. Verify the control module can be reprogrammed.
    • If the control module cannot be programmed
    1. Ignition OFF for 2 minutes, ignition ON.
    2. Verify the control module can be reprogrammed.
      • If the control module cannot be programmed, replace the K71 Transmission Control Module.
    • If the control module can be reprogrammed
  3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for TCM replacement, programming and setup