C0472 - ABS

Antilock Brake System

Diagnostic Information and Procedures

DTC C0472 or C0473

Circuit Description

The steering wheel position sensor is a 0.0 - 5.0 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.

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 Testing for Electrical Intermittents, Testing for Intermittent and Poor Connections, Wiring Repairs and Connector Repairs in Wiring Systems.

Test Description

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

DTC C0472 or C0473 Steps 1 - 3:

DTC C0472 or C0473 Continued Steps 4 - 14: