DTC C047A
Diagnostic Instructions
DTC Descriptor
DTC C047A 00: 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
| • | The driver information centre 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 : Hydraulic Power Steering
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Verify that DTC C047A 00 is not set.
| ⇒ | If the DTC is set, perform the power steering control module centring procedure. If the DTC resets, replace the K43 Power Steering Control Module. |
- Replace the K43 Power Steering Control Module.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| © Copyright Chevrolet. All rights reserved |
