Power Steering Control Module Programming and Setup without HP5

Note: The power steering control module is serviced separately from the steering column assembly.

If the Power Steering Control Module is replaced, the following procedures must be performed in the following order:

1. 1. PSCM reprogramming, refer to Service Programming System (SPS)
2. 2. Steering Position/Torque Sensor Calibration

Note: The power steering motor is serviced separately from the steering column assembly. However, the torque sensor is serviced as part of the steering column assembly.

After replacing either the steering column assembly or the power steering motor only the Steering Position/Torque Sensor Calibration procedure must be performed. Certain steering symptoms can be corrected by performing the Steering Position/Torque Sensor Calibration procedure such as:

1. Install the scan tool.
2. Turn ON the ignition, with the engine ON
3. With the scan tool select Special Functions
4. Select Steering Position/Torque Sensor Calibration and press the Enter key
5. Center the steering wheel
6. Turn OFF the ignition and remove the key from the ignition cylinder
7. Wait 20 seconds and turn ON the ignition, with the engine OFF
8. Turn the steering wheel 180 degrees to the left and hold
9. Turn the steering wheel 180 degrees past center to the right and hold

Note: 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

10. Center the steering wheel
11. Wait until the scan tool screen displays ‘Calibration Complete’. If the scan tool displays ‘Procedure Failed’, repeat the calibration procedure
12. Press the exit key. Verify there is no uneven steering feel by turning the steering wheel from left to right. If the steering feel seems uneven as the steering wheel is turned in either direction, repeat the calibration procedure
13. Use the scan tool in order to clear any PSCM DTCs

Note: 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

14. Turn OFF the ignition
15. The Steering Position Sensor Calibration procedure also needs to performed within the EBCM after completing this procedure. Refer to Steering Angle Sensor Centering

Power Steering Control Module Programming and Setup with HP5

After replacing either the steering gear assembly or the power steering control module the PSCM Centering Procedure must be performed. Certain steering symptoms can be corrected by performing the PSCM Centering Procedure such as:

Note: Follow all on-screen instructions displayed on the scan tool in order of appearance.

1. Install the scan tool.
2. Turn ON the ignition.
3. With the scan tool, under Special Functions, select PSCM Centering Procedure and press the Enter key.
4. Center the steering wheel.
5. Turn the steering wheel 90 degrees to the left.
6. Turn the steering wheel 90 degrees past center to the right.

Note: 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.

7. Center the steering wheel.
8. Wait until the scan tool screen displays Calibration Complete.

Note: Wait until the scan tool screen displays Calibration Complete. Verify visually the steering wheel is centered by confirming the Steering Wheel Position data parameter reads 0 +/- 1 degree when the steering wheel is centered. If the Steering Wheel Position data parameter reads outside the 0 +/- 1 degree range or the scan tool displays Procedure Failed, repeat the calibration procedure.

9. Press the exit key.

Note: 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.

10. Turn OFF the ignition.