C056D

DTC C056D

Diagnostic Instructions

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



DTC Descriptor
DTC C056D 39
- ECU Hardware Performance Internal Electronic Failure




Circuit/System Description

The power steering control module (PSCM) continuously monitors the internal circuitry within the module.


Conditions for Running the DTC

The ignition is ON.


Conditions for Setting the DTC

This DTC will set if the PSCM detects an internal malfunction within the module.


Actions Taken When DTC Sets

* DTC C056D 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 on the next malfunction free ignition cycle.
* A history DTC will clear after 100 consecutive malfunction-free ignition cycles, without the repeat of the internal malfunction.



Reference Information
Schematic Reference

Power Steering Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End 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
* Connector Repairs
* Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information


Circuit/System Verification

Verify DTC C056D 39 is not set.

If the DTC is set, clear the DTC, and operate the vehicle within the conditions for setting the DTC. Verify the DTC does not reset. If DTC reset, replace the PSCM.



Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.


Control Module References for PSCM replacement, setup, and programming