K43 Power Steering Control Module: Programming and Setup

Note:

  • DO NOT program a control module unless directed to by a service procedure or a 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 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 programing. 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 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.

Diagnostic Aids

  • The Electric Power Steering Control Module is part of the power steering assist motor assembly and is electronically paired with the steering gear's sensors
  • If communication with the OLD power steering control module cannot be established, then replace the entire steering gear as an assembly. Do NOT proceed with replacement of just the power steering assist motor. Refer to Electric Dual Pinion Rack and Pinion Steering Gear Replacement
  • If replacing the entire gear, verify the new one is fully centered before installation.
  • For more information on the Electric Power Steering Control Module Calibration and Setup refer to Power Steering Control Module Calibration

Note: Steering wheel and front wheels must be straight for all learns.

Replace and Program Control Module

Note: During the procedures listed below, critical data is retrieved from vehicle components and stored in the scan tool computer's hard drive. This data is needed during the programming and setup sequences. Ensure the same scan tool is used and capable of reading, storing, and writing the vehicle's system data.

If communication with the OLD power steering control module cannot be established, then replace the entire steering gear as an assembly. Do NOT proceed with replacement of just the power steering assist motor. Refer to Electric Dual Pinion Rack and Pinion Steering Gear Replacement

To program a replacement control module, perform the following procedure:

Note: When replacing the entire steering gear, follow the steps for Reprogram Control Module.

    Note: Step 1 copies the worm gear wear counter data from the power steering control module PRIOR to the module's removal and stores it on the scan tool computer's hard drive.

    AFTER completing step 1, the power steering control module can now be removed and replaced.

  1. On the SPS Supported Controllers screen, select K43 Power Steering Control Module - Prepare Control Module for Removal and follow the on-screen instructions.
  2. Replace the Power Steering Control Module. Refer to Control Module References.

    3. Note: The next two steps will transfer the vehicle's critical data, including the worm gear wear counter data saved in step 1, back to the vehicle components.

  3. On the SPS Supported Controllers screen, select K43 Power Steering Control Module - Programming and follow the on-screen instructions.
  4. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down.
  5. Ignition ON.
  6. On the SPS Supported Controllers screen, select K43 Power Steering Control Module - Setup and Configuration and follow the on-screen instructions.
  7. Clear DTCs.

Reprogram Control Module

To reprogram an existing control module, or if a new steering gear assembly has been installed, perform the following procedure:

  1. Access the Service Programming System (SPS) and follow the on-screen instructions.
  2. On the SPS Supported Controllers screen, select K43 Power Steering Control Module - Programming and follow the on-screen instructions.
  3. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down.
  4. Ignition ON.
  5. On the SPS Supported Controllers screen, select K43 Power Steering Control Module - Setup and Configuration and follow the on-screen instructions.
  6. Clear DTCs.

Unsuccessful Programming Recovery

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

  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 reprogrammed
    1. Ignition OFF for one minute, ignition ON.
    2. Verify the control module can be reprogrammed.
      • If the control module cannot be reprogrammed, replace the control module.
      • If the control module can be reprogrammed.
    3. All OK.
    • 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 control module replacement, programming and setup