Symptom 4B

DTC C056E (Symptom 4B)

Diagnostic Instructions

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

DTC Descriptor

DTC C056E 4B

- ECU Software Performance Calibration Not Learned

Circuit/System Description

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.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

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

Actions Taken When DTC Sets

* DTC C056E 4B is stored in memory.
* The driver information center (DIC) displays the SERVICE POWER STEERING warning message.
* No Steering assist.

Conditions for Clearing the DTC

* 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.

Reference Information

Schematic Reference

Power Steering Schematics

Connector End View Reference

Power Steering Connector End Views

Description and Operation

Power Steering System Description and Operation

Electrical Information Reference

* Testing for Intermittent Conditions and Poor Connections
* Circuit Testing

Scan Tool Reference

* Scan Tool Data List
* Scan Tool Data Definitions

Circuit/System Verification

Perform the Steering Wheel Angle and Torque Calibration procedure.

If DTC C056E 4B resets after performing the Steering Wheel Angle and Torque Calibration procedure, replace the PSCM.

Repair Instructions

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