K56 Serial Data Gateway Module: Programming and Setup

Note:

  • Always verify the module has the newest software available before replacing the module.
  • Verify 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 a battery maintainer or power supply that provides a steady and stable voltage. Do not use a battery charger, as charging voltage will often fluctuate when connected to the vehicle. This may interrupt programming. If a battery maintainer is not available, connect a fully charged 12 V jumper or booster pack disconnected from the AC voltage supply.
  • Turn OFF or disable systems that may put a load on the vehicle's battery such as interior lights, exterior lights (including daytime running lights), HVAC, radio, etc.
  • Programming must begin with the Ignition/Vehicle OFF. Programming will direct the appropriate control module(s) to change power mode as needed during the procedure, independent of the vehicle’s power mode.
  • To prevent programming failure due to unintended wireless drops, it is recommended that a wired MDI 2 connection be used when programming the control module.
  • Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to No.

Reference Information

Special Tools

EL-52100 Multiple Diagnostic Interface 2 (MDI 2)

Programming a New Control Module

To program a replacement K56 Serial Data Gateway Module, perform the following procedure:

    Note:

    • Verify all control modules are connected and communicating before attempting to program the K56 Serial Data Gateway Module.
    • Verify the key fob is inside the vehicle. If the key fob is not inside the vehicle, the serial data authentication configuration procedure which runs automatically at the end of the programming step will fail even though the programming appears to run successfully. If the serial data authentication configuration procedure fails, DTC U1962 will set and/or the setup step will fail or be incomplete.
    • Begin with the vehicle in vehicle OFF power mode. The Service Programming System will power mode the vehicle.

  1. Ignition/Vehicle OFF, ensure that the key fob is inside the vehicle and not moved for the duration of the programming to prevent an inadvertent power mode change during programming.
  2. Disconnect Wi-Fi dongle if it is currently connected to EL-52100 Multiple Diagnostic Interface 2 (MDI 2). Install EL-52100 (MDI 2) using wired USB Connection from MDI 2 to computer and verify it is working properly. Using the EL-47955 (MDI) will result in a programming failure.
  3. Install an approved battery maintainer or power supply that provides a steady and stable voltage to support the 12V system during SPS programming events.
  4. Access the Service Programming System (SPS) and follow the on-screen instructions.
  5. On the SPS Supported Controllers screen, select K56 Serial Data Gateway Module - Programming and follow the on-screen instructions.

    6. Note: If the Setup step fails and DTC U1962 is set in the K56 Serial Data Gateway Module, perform the Serial Data Authentication Configuration procedure and then repeat the Setup step again. Refer to: Serial Data Authentication Configuration.

  6. On the SPS Supported Controllers screen, select K56 Serial Data Gateway Module - Setup and follow the on-screen instructions.

    7. Note: If an error message indicates that a module is missing after the Setup procedure is complete, diagnose that module to make sure that it’s connected and communicating and then perform the Programming and Setup procedures again.

  7. Clear DTCs.

Programming an Existing Control Module

To program an existing K56 Serial Data Gateway Module, perform the following procedure:

    Note:

    • Verify all control modules are connected and communicating before attempting to program the K56 Serial Data Gateway Module.
    • Begin with the vehicle in vehicle OFF power mode. The Service Programming System will power mode the vehicle.

  1. Ignition/Vehicle OFF, ensure that the key fob is inside the vehicle and not moved for the duration of the programming to prevent an inadvertent power mode change during programming.
  2. Disconnect Wi-Fi dongle if it is currently connected to EL-52100 Multiple Diagnostic Interface 2 (MDI 2). Install EL-52100 (MDI 2) using wired USB Connection from MDI 2 to computer and verify it is working properly. Using the EL-47955 (MDI) will result in a programming failure.
  3. Install an approved battery maintainer or power supply that provides a steady and stable voltage to support the 12V system during SPS programming events.
  4. Access the Service Programming System (SPS) and follow the on-screen instructions.
  5. On the SPS Supported Controllers screen, select K56 Serial Data Gateway Module - Programming and follow the on-screen instructions.
  6. Clear DTCs.

Unsuccessful Programming Recovery

Note:

  • Ensure the EL-52100 (MDI 2) is used when programming the vehicle. Using the EL-47955 (MDI) will result in a programming failure.
  • It may be necessary to use another EL-52100 (MDI 2) and/or cables to verify proper operation to eliminate the possibility of faulty equipment.
  • If Ethernet programming fails, ensure there is no fault in the Ethernet circuits between the X84 Data Link Connector and K56 Serial Data Gateway Module. Refer to Scan Tool Does Not Communicate with Vehicle to diagnose these Ethernet circuits.

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

  1. Exit Service Programming System (SPS) and disconnect all programming equipment from the vehicle.
  2. Disconnect all battery voltage or ignition voltage sources from the K56 Serial Data Gateway Module. All voltage sources must be removed for a minimum of 10 min. This can be done several ways and should be completed by using the least intrusive way. This can vary depending on vehicle and control module location and can be done by one of the options listed below:
    • Removing all fuses supplying battery voltage and ignition voltage to the control module.
    • Disconnecting all harness connectors from the control module.
    • Performing a 12 V battery disconnect by disconnecting the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.
  3. Reconnect all battery voltage and ignition voltage sources to the K56 Serial Data Gateway Module.
  4. Close down the current session of Techline Connect and reopen a new session.
  5. Verify the K56 Serial Data Gateway Module, X84 Data Link Connector, and programming tool connections are secure and the tool software is up to date.
  6. Ignition/Vehicle OFF, ensure that the key fob is inside the vehicle and not moved for the duration of the programming to prevent an inadvertent power mode change during programming.
  7. Access the Service Programming System (SPS) and follow the on-screen instructions for the K56 Serial Data Gateway Module.
  8. Verify the K56 Serial Data Gateway Module can be programmed.
    • If the K56 Serial Data Gateway Module can not be programmed
    1. Ignition ON/Vehicle in Service Mode for 1 min.
    2. Ignition/Vehicle OFF.
    3. Access SPS and follow the on-screen instructions for the K56 Serial Data Gateway Module.

      4. Note: If programming is still not successful after the second programming attempt, check the following:

      • For facilities using an internet firewall, ensure firewall settings are not blocking file downloads and/or require elevated rights.
      • For United States and Canada GM dealers, the appropriate firewall settings can be found in the GM DEALER INFRASTRUCTURE & SECURITY GUIDELINES (DISG) section 2.d.vii.

    4. Verify the K56 Serial Data Gateway Module can be programmed.
      • If the K56 Serial Data Gateway Module can not be programmed, replace the K56 Serial Data Gateway Module.
      • If the K56 Serial Data Gateway Module can be programmed
    5. Clear DTCs.
    • If the K56 Serial Data Gateway Module can be programmed
  9. Clear DTCs.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification.

For control module replacement, programming, and setup, refer to: Control Module References.