For 1990-2009 cars only
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 C056E 4B: ECU Software Performance Calibration Not LearnedCircuit/System Description
After either replacing the power steering control module (PSCM), motor or steering column assembly, the Steering Wheel Angle and Torque Calibration procedure must be performed.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
This DTC will set if the PSCM, motor or torque sensor has not been calibrated using the Steering Wheel Angle and Torque Calibration procedure.
Actions Taken When DTC Sets
| • | DTC C056E 4B 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 after the PSCM, motor or torque sensor has been calibrated using the Steering Wheel Angle and Torque Calibration procedure. |
| • | A history DTC will clear after 100 consecutive malfunction-free ignition cycles from when the PSCM, motor or torque sensor has been calibrated using the Steering Wheel Angle and Torque Calibration procedure. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Power Steering System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Verify DTC C056E 4B is not set.
| ⇒ | If DTC is set, perform the steering wheel angle and torque calibration procedure. If the DTC resets, replace the PSCM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for PSCM replacement, setup, and programming
