Power Steering Control Module Programming and Setup

Power Steering Control Module Programming and Setup

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

The electronic power steering control module is part of the power steering assist motor assembly and is electronically paired with the steering gear's sensors.

If the complete steering gear INCLUDING the assist motor assembly was replaced, or for reprogramming of an existing power steering system WITHOUT replacement, refer to the POWER STEERING CONTROL MODULE REPROGRAMMING instructions in this article.

If ONLY the Power Steering Assist Motor assembly is replaced, follow the POWER STEERING CONTROL MODULE REPLACEMENT instructions.

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.

1. Access the Service Programming System (SPS) and follow the on-screen instructions.

2. On the SPS Supported Controllers screen, select Electronic Power Steering - Prepare Control Module for Removal and follow the on-screen instructions.

3. Replace the Power Steering Assist Motor containing the Power Steering Control Module. Refer to Power Steering Assist Motor Replacement Service and Repair.

4. With the Power Steering Assist Motor replaced and reconnected, on the SPS Supported Controllers screen, select Electronic Power Steering - Programming and follow the on-screen instructions.

5. On the SPS Supported Controllers screen, select Electronic Power Steering - Configuration and follow the on-screen instructions.

6. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down.

7. Ignition ON.

8. On the SPS Supported Controllers screen, select Electronic Power Steering - Setup and follow the on-screen instructions.

9. On the SPS Supported Controllers screen, select Electronic Power Steering - Endstop Learning procedure. Refer to Power Steering Control Module Calibration (NJ1) Power Steering Control Module Calibration (NJ1)

10. At the end of programming, choose the "Clear All DTCs" function on the SPS screen.

Power Steering Control Module Reprogramming

Do not program or reprogram the electronic power steering control module unless directed by a service procedure or a service bulletin.

Note: This procedure applies to reprogramming of the existing steering gear or the initial programming if the complete steering gear assembly including the assist motor was replaced. If only the power steering control module is replaced, follow the Power Steering Control Module Replacement instructions above.

1. Access the Service Programming System (SPS) and follow the on-screen instructions.

2. On the SPS Supported Controllers screen, select Electronic Power Steering - Programming and follow the on-screen instructions.

3. On the SPS Supported Controllers screen, select Electronic Power Steering - Configuration 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 Electronic Power Steering - Setup and follow the on-screen instructions.

7. On the SPS Supported Controllers screen, select Electronic Power Steering - Endstop Learning procedure. Refer to Power Steering Control Module Calibration (NJ1) Power Steering Control Module Calibration (NJ1)

8. At the end of programming, choose the "Clear All DTCs" function on the SPS screen.

Steering Angle Sensor Centering and Software Endstop Learning

For the steering angle sensor centering and software endstop learning, refer to Power Steering Control Module Calibration (NJ1) Power Steering Control Module Calibration (NJ1).

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.