C0470
Steering Position & Rate of Change Sensor Circuit No. 1 Malfunction
Circuit Description
The steering hand wheel position/speed sensor is a O to 5 volt device which is used to measure steering wheel position. This information is then used by the control module to estimate vehicle lateral acceleration. The two valid output signals are in the 0.35 to 4.75 volt range. These output voltages will increase or decrease within the valid voltage range as the steering wheel is rotated. The sensor is mounted at the base of the steering column.
Conditions for Running the DTC
Vehicle speed is greater than 50 MPH for at least 10 seconds.
Conditions for Setting the DTC
The suspension control module detects a steering hand wheel position/speed sensor out-of-range condition when the vehicle speed is greater than 50 MPH for at least 10 seconds.
Action Taken When the DTC Sets
The Electronic Variable Orifice (EVO) outputs will be disabled.
Conditions for Clearing the MIL/DTC
- The suspension control module no longer detects a steering hand wheel position/speed sensor out-of-range condition.
- A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
- Using the scan tool.
Diagnostic Aids
The following conditions may cause a malfunction to occur:
- There is a short to ground or voltage on the sensor 1 signal circuit.
- There is a open in the sensor 1 signal circuit.
- There is a loose or poorly seated connector.
Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
2. Checking sensor voltage range.
3. Tests for the proper operation of the circuit in the high voltage range.
4. Tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens when you perform this test, the sensor 1 signal circuit is shorted to voltage.
5. Tests for a short to ground in the 5 volt reference circuit.
7. Test for a short to voltage, a high resistance, or an open circuit.
14. The control module must be re-calibrated.