C0473

DTC C0472 or C0473
Circuit Description
The steering wheel position sensor is a 0-5 volt device which is used to sense steering wheel position and turning speed. The valid signal voltage range of the sensor is 0.35-4.75 volts. The signal voltage will increase or decrease within the valid voltage range as the steering wheel is turned. The body control module (BCM) monitors the steering wheel position sensor signal voltage and transmits this data on the serial data line.

DTC Descriptors
This diagnostic procedure supports the following DTC's:
^ DTC C0472 Steering Hand Wheel Speed Sensor Signal Circuit
^ DTC C0473 Steering Hand Wheel Speed Sensor Signal Circuit

Conditions for Running the DTC
The ignition is ON.

Conditions for Setting the DTC
The BCM detects that the analog steering signal circuit is open, shorted to ground or shorted to voltage.

Action Taken When the DTC Sets
The BCM sends a serial data message reporting the failed steering signal.

Conditions for Clearing the DTC
^ A current DTC will clear when the malfunction is no longer present.
^ A history DTC will clear after 100 consecutive malfunction-free ignition cycles or when the scan tool Clear DTC's function is used.

Diagnostic Aids
Thoroughly inspect connections or circuitry that may cause an intermittent malfunction. Refer to the following:
^ Testing for Electrical Intermittents Component Tests and General Diagnostics
^ Testing for Intermittent Conditions and Poor Connections Component Tests and General Diagnostics
^ Wiring Repairs
^ Connector Repairs

Test Description
The numbers below refer to the step numbers on the diagnostic table.
3. This step test the circuitry in the high voltage range.
4. This step test the circuitry in the low voltage range.
5. This step tests the low reference circuit of the steering wheel position sensor.

Step 1 - Step 11:

Step 12 - Step 14: