C0475

DTC C0475

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 C0475

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Electric Steering Motor Circuit

Circuit/System Description

C0475

The power steering control module continuously monitors the voltage and current levels being commanded to the three phase steering assist motor. The power steering control module compares the desired and actual current levels to detect malfunctions in the internal power steering assist motor circuits.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

C0475

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

Action Taken When the DTC Sets

* The DTC is stored in memory.

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

* No steering assist.

Conditions for Clearing the DTC

C0475 00

* 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

C0475

1. Ignition OFF, disconnect the X1 harness connector at the Power Steering Gear.

2. Test for less than 1 ohms between the ground circuit terminal 2 and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 1 and ground.

• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

4. If all circuits test normal, replace the Power Steering Gear.

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

Repair Instructions

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

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