C0544

DTC C0544

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 provides an overview of each diagnostic category.

DTC Descriptor

DTC C0544 5A
- Steering Wheel Angle Sensor Signal Not Plausible

Circuit/System Description

The power steering control module continuously monitors the steering wheel angle sensor. The steering wheel angle sensor indicates the direction in which the driver intends to go.

The power steering control module has a center detection algorithm that compares the reading of the steering angle sensor to the direction based on other vehicle sensors that the vehicle is travelling to determine if the steering angle reading is plausible.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

The power steering control module detects a not plausible signal from the steering wheel angle sensor.

The power steering control module detected that the steering angle sensor reading and the direction of the vehicle exceeds 329 degrees.

Action Taken When the DTC Sets

* DTC C0544 is stored in memory.

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

Conditions for Clearing the DTC

A history DTC will clear after 40 consecutive malfunction free ignition cycles.

Reference Information

Schematic Reference

Power Steering Schematics Electrical Diagrams

Connector End View Reference

Component Connector End Views Outside Rearview Mirror - Driver

Description and Operation

Power Steering System Description and Operation (Electronic Power Steering) Description and Operation

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

1. Ignition ON.

2. Verify that no other DTCs are set except for C0544.

• If any other DTCs are set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle

• If no other DTCs are set

3. With a scan tool, verify that the Steering Wheel Angle parameter is zero degrees or near zero degrees with the front tire/wheels in the straight ahead position.

• The Steering Wheel Angle parameter is not zero degrees or near zero degrees
Perform the Power Steering Control Module Calibration. Refer to Power Steering Control Module Calibration Power Steering Control Module Calibration

• The Steering Wheel Angle parameter is zero degrees or near zero degrees

4. Verify that DTC C0544 is not set.

• If the DTC is set
Replace the K43 power steering control module.

• If the DTC is not set

5. All OK.

Repair Instructions

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

* Power Steering Assist Motor Replacement Service and Repair for power steering control module replacement

* Control Module References Control Module References for power steering control module replacement, programming and setup.