C0545

DTC C0545

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 Descriptors

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 sensors torque and index current signals. 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. The steering wheel torque sensor needs to be calibrated to be fully functional.

Conditions for Running the DTC

The ignition is 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.

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

* No Steering assist.

Conditions for Clearing the DTC

* A current DTC will clear on the next malfunction free ignition cycle.

* 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 Fuel Pump and Level Sensor Assembly - Primary

Description and Operation

Power Steering System Description and Operation (Belt Drive EPS) Power Steering System Description and Operation (Belt Drive EPS)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

1. Ignition ON.

2. With a scan tool, verify that DTC C0545 is not set.

• If the DTC C0545 is set

Refer to Circuit/System Testing below.

• If the DTC C0545 is not set

All OK. Refer to Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

Circuit/System Testing

1. WIth the scan tool, perform the Power Steering Control Module Calibration Power Steering Control Module Calibration.

2. Verify the DTC does not reset.

• If the DTC C0545 resets

Replace the Power Steering Gear. Refer to Steering Gear Replacement (L99, LFX, LS3, N41) Steering Gear ReplacementSteering Gear Replacement (LSA, NV9)

• If the DTC does not reset

All OK. Refer to Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Steering Gear Replacement (L99, LFX, LS3, N41) Steering Gear ReplacementSteering Gear Replacement (LSA, NV9)

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