Power Steering (NJ1)

DTC C056E (NJ1)

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 Descriptors

DTC C056E 41
- Electronic Control Unit Hardware Not Programmed

DTC C056E 4B
- Electronic Control Unit Hardware Calibration Not Learned

Circuit/System Description

After replacement of the power steering control module , the power steering control module must be configured with the proper tuning profile using the service programming system (SPS).

After replacement of the power steering control module, power steering motor, or steering gear, the steering position/torque sensor calibration procedure must be performed.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

DTC C056E 41

This DTC will set if the operational software or calibration code (tuning parameter value) does not save in Flash.

DTC C056E 4B

This DTC will set if the power steering control module, motor or torque sensor has not been calibrated using the steering position / torque sensor calibration procedure.

Actions Taken When DTC Sets

* DTC is stored in memory.

* Steering assist is set to a default level.

Conditions for Clearing the DTC

DTC C056E 41

A current or history DTC will clear after the power steering control module has been configured with the proper tuning profile.

DTC C056E 4B

A current or history DTC will clear after the steering position/torque sensor calibration procedure has been performed.

Reference Information

Schematic Reference

Power Steering Schematics Electrical Diagrams

Connector End View Reference

Component Connector End Views Sunshade - Left (D61)

Description and Operation

Power Steering System Description and Operation (Hydraulic Power Steering) Power Steering System (Hydraulic Power Steering)Power Steering System Description and Operation (Electronic Power Steering) Power Steering System (Electronic Power 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 Control Module References for scan tool information

Circuit/System Verification

DTC C056E 41

1. Ignition ON.

2. Verify that DTC C056E 41 is not set.

• If the DTC C056E 41 is set

1. Program the K43 Power Steering Control Module.

2. Verify the DTC does not set.

• If the DTC sets, replace the Steering Gear.

• If the DTC does not set

3. All OK.

• If the DTC C056E 41 is not set

3. All OK.

DTC C056E 4B

1. Ignition ON.

2. Verify that DTC C056E 4B is not set.

• If the DTC C056E 4B is set

1. Calibrate the K43 Power Steering Control Module.

2. Verify the DTC does not set.

• If the DTC sets, replace the Steering Gear.

• If the DTC does not set

3. All OK.

• If the DTC C056E 4B is not set

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

* Steering Gear Replacement Steering Gear Replacement

* Control Module References Control Module References for Power Steering Control Module replacement, programming and setup.