Workshop Manuals Factory service & repair Vauxhall
Vauxhall Astra J17 · Steering
17 · Steering & suspension

DTC C047A

Make
Vauxhall
Model
Astra J
Section
Power Steering System › Other Information › DTC C047A
SteeringDTC C047A

DTC C047A

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 C047A: Electric Steering Motor Position Sensor Circuit Malfunction

Circuit/System Description

The power steering control module continuously monitors the motor position sensor voltage signals. The voltage signals of the motor position sensor and the digital torque sensor index current signal are both processed by the power steering control module to detect and calculate the steering wheel angle.

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 internal motor position sensor circuits.

Action Taken When the DTC Sets

•  No steering assist.
•  The driver information center displays the SERVICE POWER STEERING warning message.

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


Connector End View Reference

Component Connector End Views


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

1. Verify that DTC C047A is not set.
⇒ If the DTC is set, perform the Steering Angle Sensor Centering , then verify the DTC does not reset.
2. If the DTC resets, replace the K43 Power Steering Control Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

•  Power Steering Assist Motor Replacement for power steering control module replacement
•  Control Module References for power steering control module replacement, programming and setup

Parts & tools for this job For Vauxhall Astra

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