C056E

DTC C056E

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provide an overview of each diagnostic category.

DTC Descriptors
DTC C056E 4B
- ECU Software Performance Calibration Not Learned

DTC C056E 42
- ECU Hardware Performance Calibration Data Set Not Programmed

Circuit/System Description

C056E 4B

After either replacing the power steering control module (PSCM), motor or steering column assembly, the Steering Wheel Angle and Torque Calibration procedure must be performed.

C056E 42

After replacement of the PSCM, the PSCM must be configured with the proper calibration using the service programming system (SPS).

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

C056E 4B

This DTC will set if the PSCM, motor or torque sensor has not been calibrated using the Steering Wheel Angle and Torque Calibration procedure.

C056E 42

This DTC will set if the PSCM has not undergone SPS reprogramming.

Actions Taken When DTC Sets

* DTC C056E 4B is stored in memory.
* The driver information center (DIC) displays the SERVICE POWER STEERING warning message.
* 4B-No Steering assist.
* 42-Steering assist is set to a default level.

Conditions for Clearing the DTC

C056E 4B
* A current DTC will clear after the PSCM, motor or torque sensor has been calibrated using the Steering Wheel Angle and Torque Calibration procedure.
* A history DTC will clear after 100 consecutive malfunction-free ignition cycles from when the PSCM, motor or torque sensor has been calibrated using the Steering Wheel Angle and Torque Calibration procedure.

C056E 42
* A current DTC will clear after the PSCM has been configured with the proper calibration profile.
* A history DTC will clear after 100 consecutive malfunction-free ignition cycles from when the PSCM has been configured with the proper calibration profile.

Reference Information
Schematic Reference

Power Steering Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Power Steering System Description and Operation (with EPS) (Power Steering System Description and Operation (with EPS))Power Steering System Description and Operation (with HPS) (Power Steering System Description and Operation (with HPS))
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

C056E 4B

Verify DTC C056E 4B is not set.

If DTC is set, perform the steering wheel angle and torque calibration procedure. If DTC resets, replace the PSCM.

C056E 42

Verify DTC C056E 42 is not set.

If DTC is set, program the PSCM. If DTC resets, replace the PSCM.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

Control Module References (Programming and Relearning) for PSCM replacement, setup, and programming