C0473

DTC C0472 or C0473





Test 1-4





Test 5-15

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 uses this data to calculate lateral' acceleration. When the BCM detects lateral acceleration is occurring less current is commanded to the Electronic Variable Orifice (EVO) Solenoid which increases steering assist during abrupt driving maneuvers.

Conditions for Running the DTC
Vehicle speed is greater than 80.4 km/h (50 mph) for at least 10 seconds.

Conditions for Setting the DTC
A short to ground, short to voltage, or an open in the steering wheel position sensor signal circuit.

Action Taken When the DTC Sets
^ DTC C0472, or C0473 is stored in memory.
^ The EVO outputs will be disabled for the remainder of the ignition cycle.

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.
^ Using the scan tool

Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. Tests if the sensor is within the valid voltage range.
3. Tests if the sensor is internally shorted to ground.
4. Tests if the signal circuit is shorted to ground
5. Tests if the 5 volt reference circuit is short to voltage or open.
14. Program the BCM after replacement.