Chevrolet Trax: DTC C0545: Steering wheel torque sensor

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 provides an overview of each diagnostic category.

DTC Descriptor

DTC C0545 00

Steering Wheel Torque Sensor Malfunction

DTC C0545 4B

Steering Wheel Torque Sensor Calibration Not Learned

Circuit/System Description

The power steering control module continuously monitors the digital torque sensor's torque signal. As the steering wheel is turned and torsional twist is applied to the steering shaft, the steering input and output shafts are monitored via the torque signal circuit and then processed by the power steering control module to calculate the steering torque.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

The power steering control module detects a short to ground, short to voltage, or an open/high resistance on any of the torque sensor circuits.

Action Taken When the DTC Sets

• DTC C0545 is stored in memory.
• No steering assist.

Conditions for Clearing the DTC

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

Reference Information

Schematic Reference

Power Steering Schematics (Encore), Power Steering Schematics (Trax)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - TRAX

Description and Operation

Power Steering System Description and Operation

Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information.

Circuit/System Verification

1. Ignition ON.
2. Verify the scan tool Steering Input Torque parameter changes when turning the steering wheel.

• If the parameter does not change

1. Program the K43 Power Steering Control Module.
2. Verify the DTC does not set.

• If the DTC sets, replace the Steering Column.
• If the DTC does not set

3. All OK.

• If the parameter changes

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

• Steering Column Replacement (Mexico, N40) , Steering Column Replacement (Canada, NJ1) , Steering Column Replacement (United States, NJ1)
• Control Module References for power steering control module replacement, programming and setup.

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