C0710

DTC C0710
Circuit Description
The steering wheel position sensor supplies 2 analog inputs, Phase A and Phase 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 Descriptors
This diagnostic procedure supports the following DTC:
DTC C0710 Steering Position Signal

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

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 seconds.
^ The steering rate of Phase 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 seconds.
^ The steering wheel position sensor is centered.

Conditions for Setting the DTC
C0710 00
Both Phase A and Phase B are greater than 4.9 volts or less than 0.2 volts for 1.6 seconds.

C0710 1A
The steering bias is greater than 40 degrees.

C0710 1F
The difference in the phase angle between Phase A and Phase B is greater than 106 degrees or less than 84 degrees continuously for 0.25 seconds.

C0710 52
The changes in Phase A or Phase 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 driver information center (DIC) displays the Service Stability System message.
^ The ABS remains functional.

Conditions for Clearing the DTC
^ The condition for the DTC is no longer present and the DTC is cleared with a scan tool.
^ 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. This step tests for the proper voltage output on the 5-volt reference circuit and the proper operation of the signal circuit.
3. This step tests for possible low 5-volt reference output or a problem with the signal circuit.
4. This step tests for a short to voltage on the 5-volt reference circuit. If a short to voltage exists, other DTC may be set for the vehicle stability system.
8. This step tests for a problem with the low reference circuit. If a short to voltage exists, other DTC may be set for the vehicle stability system.

Step 1 - Step 9:

Step 10 - Step 12: