C056D
DTC C056D
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 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
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
1. Verify that DTC C056E is not set.
^ If DTC C056E is set, program the PSCM. If DTC C056D resets, replace the PSCM.
2. Replace the PSCM.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests