C0710

DTC C0710

Circuit Description

The steering wheel position sensor supplies 2 analog inputs, position signal A and position signal B, to the electronic brake control module (EBCM). The 2 input signals are approximately 90 degrees out of phase. By interpreting the relationship between the 2 inputs, the EBCM can determine the position of the steering wheel and the direction of the steering wheel rotation.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC C0710 Steering Position Signal

This vehicle has DTCs which include DTC Symptoms. For more information on DTC Symptoms, refer to DTC Symptom Description.





Conditions for Running the DTC

C0710 00

* The ignition is ON.
* Ignition voltage is greater than 8 volts.
* The steering wheel position sensor has been powered ON for 0.2 second.

C0710 1A

* The ignition is ON.
* Ignition voltage is greater than 8 volts.
* The steering wheel position sensor is centered.

C0710 1F

* The ignition is ON.
* Ignition voltage is greater than 8 volts.
* The steering wheel position sensor has been powered ON for 0.2 second.
* The steering rate of signal A is less than 80 degrees per second.

C0710 52

* The ignition is ON.
* Ignition voltage is greater than 8 volts.
* The steering wheel position sensor has been powered ON for 0.2 second.
* The steering wheel position sensor is centered.

Conditions for Setting the DTC

C0710 00

Both signal A and signal B are greater than 4.9 volts or less than 0.2 volt for 1.6 seconds.

C0710 1A

The steering bias is greater than 40 degrees.

C0710 1F

The difference in the phase angle between signal A and signal B is greater than 106 degrees or less than 84 degrees continuously for 0.25 second.

C0710 52

The changes in signal A or signal B is greater than 36 degrees between consecutive scans of the signal.

Action Taken When the DTC Sets

* The EBCM disables the vehicle stability enhancement system (VSES) for the duration of the ignition cycle.
* The instrument panel cluster (IPC) illuminates the stability system off indicator.
* The antilock brake system (ABS) remains functional.

Conditions for Clearing the DTC

* The condition for the DTC is no longer present.
* The electronic brake control module (EBCM) automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids

* Check the vehicle for proper alignment. The car should not pull in either direction while driving straight on a level surface.
* The Snapshot function on the scan tool can help find an intermittent DTC.
* Possible causes for this DTC are the following conditions:

- One of the steering wheel position sensor inputs are open, shorted to ground, or shorted to battery.
- Internal steering wheel position sensor malfunction.
- Noise on the steering wheel position sensor signal lines.
- Yaw rate/lateral accelerometer sensor malfunction causing drifting signal outputs.
- Internal EBCM malfunction.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

2. Verify that the condition is current.
3. Tests for the proper operation of the steering wheel position signal A circuit in the low voltage range.
4. Tests for the proper operation of the steering wheel position signal B circuit in the low voltage range.
5. Tests for the proper operation of the steering wheel position signal A circuit in the high voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to ground.
6. Tests for the proper operation of the steering wheel position signal B circuit in the high voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to ground.
7. Tests for a short to voltage in the 5 volt reference circuit.
8. Tests for a high resistance or an open in the low reference circuit.

Step 1 - Step 7:

Step 8 - Step 13:

Step 14 - Step 20: