2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 840

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 840

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool References

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Verify DTC C056E is not set.

If the DTC is set, program the control module. If the DTC resets, replace the control module.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

Control Module References (See: Testing and Inspection/Programming and Relearning) for control module replacement, setup, and programming

Power Steering

DTC C056E

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provide an overview of each diagnostic category.

DTC Descriptors

DTC C056E 42

- ECU Hardware Performance Calibration Data Set Not Programmed

DTC C056E 4B

- ECU Software Performance Calibration Not Learned

Circuit/System Description

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

programming system (SPS).

After replacement of the PSCM, 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 42

This DTC will set if the PSCM has not undergone SPS programming.

DTC C056E 4B

This DTC will set if the PSCM, 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.

* The driver information center (DIC) displays the SERVICE POWER STEERING warning message.

* Steering assist is set to a default level.