Power Steering

DTC C056E

Diagnostic Instructions

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

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

Circuit/System Description

The power steering control module (PSCM) monitors the learned or unlearned status of the steering angle sensor. The steering angle sensor must be learned or the power steering control module will not function.

Conditions for Running the DTC

The ignition is ON. Engine running.

Conditions for Setting the DTC

The steering angle sensor neutral position has not been learned.

Action Taken When the DTC Sets

* Active Steering is disabled.
* SERVICE STEERING SYS and/or STABILITY SECURE MODE is displayed on the DIC.

Conditions for Clearing the DTC

A current DTC will clear when a valid steering actuator neutral position has been learned.

Reference Information
Schematic Reference

Power Steering Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Active Front Steering Description and Operation (Active Front Steering)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

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

Circuit/System Verification

Verify DTC C056E 4B is not set.

If the DTC is set, perform the scan tool PSCM Calibration Procedure. Refer to Power Steering Control Module Programming and Setup (Power Steering Control Module Programming and Setup).