K36 Restraints Control Module: Programming and Setup

Diagnostic Instructions

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 an Existing or New Control Module

To program an existing or new control module, perform the following procedure:

    Note:

    • Ensure the EL-52100 (MDI 2) is used when programming the vehicle and verify it is working properly. Using the EL-47955 (MDI) will result in a programming failure.
    • Verify all control modules are connected and communicating before attempting to program the K36 Restraints Control 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.

  1. Place the vehicle on level ground (the vehicle must be level or the IMU setup may fail)
  2. 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.
  3. Access the Service Programming System (SPS) and follow the on-screen instructions for the K36 Restraints Control Module.
  4. Perform the SPS function: Programming and follow the on-screen instructions.
  5. Perform the SPS function: Setup 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 control module.

    3. Note: 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.

      • Warning: Always ensure the Battery Maintenance Mode is inactive before disconnecting the low voltage 12 volt battery (or batteries). This mode can be active with the ignition off, regardless of whether the vehicle charging cord is plugged in or not. When this mode is active, the on-board high voltage battery charger(s) will energize the 12 volt battery cables and charge the 12 volt battery (or batteries). Disconnecting any battery cables while this mode is active may result in an electrical shock or a burn from hot battery cable leads.

    • Check the 12 volt battery voltage with a digital multimeter before disconnecting any battery cables leads. If the voltage is 13.5 volts or above, the Battery Maintenance Mode is active. The technician must wait for the T18 battery charger to deactivate before disconnecting the battery negative cable. For more information refer to Charging System Description and Operation. With Battery Maintenance Mode inactive, perform 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 control module.
  4. Close down the current session of Techline Connect and reopen a new session.
  5. Verify the control module, 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 control module.
  8. Verify the control module can be programmed.
    • If the control 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 control 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 control module can be programmed.
      • If the control module can not be programmed, replace the control module.
      • If the control module can be programmed
    5. Clear DTCs.
    • If the control module can be programmed
  9. Clear DTCs.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for control module replacement, programming, and setup.