Power Steering Control Module - Programming and Setup

POWER STEERING CONTROL MODULE PROGRAMMING AND SETUP

POWER STEERING CONTROL MODULE (PSCM) SETUP
After replacing the power steering motor and module assembly the following 3 procedures must be performed. After replacing the steering column assembly only the steering position sensor and the torque sensor calibration procedures must be performed. The steering position sensor and torque sensor calibration procedures should also be performed after a suspension alignment. Certain steering symptoms can be corrected by performing the steering position sensor and torque sensor calibration procedures such as:
- Poor return to center
- Bias, or uneven return to center
- Poor on center feel
- Bias, or uneven on center feel

IMPORTANT: The power steering control module (PSCM) must be setup using the service programming system (SPS). There are 8 different tuning profile calibrations stored in the PSCM. The SPS will select the correct tuning profile calibration for this vehicle. Setup the PSCM to use that profile. If the PSCM has not been setup, the scan tool will display the Tuning Profile is 0 in the EPS data list, and DTC C0551 will set.

STEERING POSITION SENSOR CALIBRATION
1. Install the scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Center the steering wheel.
4. With the scan tool select Special Functions.
5. Select Steering Position Sensor Calibration and press the Enter key. The scan tool screen will flash Calibration in Progress.
6. When done, the scan tool will display Calibration Complete.
7. Press the exit key.
8. Use the scan tool in order to clear the DTCs.
9. Turn OFF the ignition.

IMPORTANT: After turning OFF the ignition, allow 25 seconds of wait time before performing any procedures that require the vehicles battery to be disconnected, or module memory loss may occur.

TORQUE SENSOR CALIBRATION
1. Install the scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Center the steering wheel.

IMPORTANT: After centering the steering wheel, remove hands and other objects from the steering wheel and ensure the suspension is relaxed and no bias, or uneven force is being applied to the steering system.

4. With the scan tool select Special Functions.
5. Select Torque Sensor Calibration and press the Enter key. The scan tool screen will flash Calibration in Progress.
6. When done, the scan tool will display Calibration Complete.
7. Press the exit key
8. Use the scan tool in order to clear the DTCs
9. Turn OFF the ignition.

IMPORTANT: After turning OFF the ignition, allow 25 seconds of wait time before performing any procedures that require the vehicles battery to be disconnected, or module memory loss may occur.

STEERING TUNING SELECTION
1. Install the scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With the scan tool select Special Functions
4. Select Steering Tuning Selection and press the enter key. The scan tool screen will flash Selection in Progress.
5. When done the scan tool will display Selection Complete.
6. Press the exit key.
7. Use the scan tool in order to clear the DTCs.
8. Turn OFF the ignition.

IMPORTANT: After turning OFF the ignition, allow 25 seconds of wait time before performing any procedures that require the vehicles battery to be disconnected, or module memory loss may occur.