GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Express - AWD 🢒 Safety and Security 🢒 Supplemental Inflatable Restraints 🢒 DTC C0710

Diagnostic Instructions
    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    •  Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC C0710 0F : Steering Position Signal Erratic

DTC C0710 17: Steering Position Signal Signal Shape/Waveform Failure

DTC C0710 55: Steering Position Signal Expected Number of Transitions/Events not Reached

DTC C0710 5A: Steering Position Signal Plausibility Failure

Circuit/System 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.

Conditions for Running the DTC
    • Ignition ON.
    • Ignition voltage is greater than 8 volts.

Conditions for Setting the DTC
    • Phase A and Phase B signal resistance values do not correlate to one another.
    • The calculated steering angle from the steering wheel position sensor does not correlate with the steering angle calculated from the yaw rate.

Action Taken When the DTC Sets
    • The EBCM turns OFF the 5-volt reference circuit, until the ignition is cycled.
    • 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 antilock brake system (ABS) remains functional.
    • The Traction Control indicator illuminates.

Conditions for Clearing the DTC
    • The condition for the DTC is no longer present.
    • The EBCM clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids
    • If the steering wheel position sensor is disconnected, DTCs will set and the EBCM will not provide 5-volt reference.
    • A poor ground connection for the EBCM may cause this DTC to set.

Reference Information

Schematic Reference

Antilock Brake System Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Scan Tool Reference

Control Module References for EBCM scan tool information.

Circuit/System Verification
  1. Ignition ON, observe the DTC information with the scan tool.
    2. ⇒ Verify that DTC C0292 has not set. If DTC C0292 has set, refer to Diagnostic Trouble Code (DTC) List - Vehicle.
  2. Ignition OFF, disconnect the steering wheel position sensor (SWPS) connector.
  3. Ignition OFF, test for less than 1 ohm of resistance between the low reference circuit terminal 8 and ground.
    4. ⇒If greater than 1 ohm, test the low reference circuit and the EBCM ground circuit terminals 1 and 25 for a short to voltage or an open/high resistance. If the circuits test normal, replace the EBCM.
  4. Test the signal phase A circuit terminal 3, signal phase B circuit terminal 4, and 5-volt reference circuit terminal 1, and the low reference circuit terminal 8 for an open/high resistance or a short to voltage or ground.
    5. ⇒If all circuits test normal, replace the SWPS.
    ⇒If the DTC sets again after replacing the SWPS, replace the EBCM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Steering Wheel Position Sensor or Steering Shaft Lower Bearing Replacement
    •  Control Module References for EBCM replacement, setup, and programming