Chevrolet Trax: DTC C0710: Steering position signal calibration

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 Descriptors

DTC C0710 4B

Steering Position Signal Calibration Not Learned

DTC C0710 5A

Steering Position Signal Not Plausible

DTC C0710 71

Steering Position Signal Invalid Data

Diagnostic Fault Information

Circuit/System Description

The steering wheel angle sensor receives a 12 V reference from the electronic brake control module. The electronic brake control module receives serial data message inputs from the steering wheel angle sensor identifying the position and direction of the steering wheel rotation. The module utilizes this signal to calculate the driver intended driving direction.

Conditions for Running the DTC

The condition for running the DTC will not occur until the initialization phase has been completed. The initialization of the electronic brake control module occurs when the following conditions have been met:

• Ignition voltage is greater than 8 V.
• The initialization happens once each ignition cycle when the vehicle speed is greater than 20 km/h (12 MPH) and the vehicle is driven in a straight line without the brake pedal being applied.

Conditions for Setting the DTC

C0710 4B

The steering wheel angle sensor is not calibrated after installation.

C0710 5A

• The steering wheel angle sensor is out of the specified range.
• The steering wheel angle sensor offset is out of the specified range.

C0710 71

The steering wheel angle signal is not plausible with the yaw rate signal and lateral acceleration signal.

Action Taken When the DTC Sets

• The ABS remains functional.
• The electronic brake control module disables the stability control for the duration of the ignition cycle.

Conditions for Clearing the DTC

• The condition for setting the DTC is no longer present.
• The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.

Diagnostic Aids

• Improperly mounted or loose steering wheel angle sensor.
• Inspect the vehicle for proper alignment. The car should not pull in either direction while driving straight on a level surface.
• Confirm that all tires are of the proper size and that all are matching brands. Check and adjust all tires to the stated cold air pressure as identified on the tire placard. If a mis-sized or non-matching brand tire is present, inform the customer that in order for the vehicle stability enhanced system to function normally, tires need to be a uniform size and rolling diameter.

Reference Information

Schematic Reference

Antilock Brake System Schematics (Encore), Antilock Brake System Schematics (Trax)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - (Trax)

Description and Operation

ABS Description and Operation

Electrical Information Reference

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

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify the scan tool Steering Wheel Angle parameter corresponds to the actual steering wheel position as the steering wheel is turned through its entire range of motion.

If the parameter does not correspond with the steering wheel position or the reading is erratic

Refer to Circuit/System Testing.

If the parameter reading corresponds with the steering wheel position

3. All OK.

Circuit/System Testing

1. Ignition OFF all vehicle systems OFF, disconnect the harness connector at the B99 Steering Wheel Angle Sensor. It may take up to 2 min for all vehicle systems to power down.
2. Test for less than 10 ohms between the ground circuit terminal 6 and ground.

If 10 ohms or greater

1. Ignition OFF
2. Test for less than 2 ohms in the ground circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, repair the open/high resistance in the ground connection.

If less than 10 ohms

3. Ignition ON.
4. Verify that a test lamp illuminates between the 12 V reference circuit terminal 5 and ground.

If the test lamp does not illuminate

1. Ignition OFF, disconnect the harness connector at the K17 Electronic Brake Control Module
2. Test for infinite resistance between the 12 V reference circuit and ground.

• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance

3. Test for less than 2 ohms in the 12 V reference circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace the K17 Electronic Brake Control Module.

If the test lamp illuminates

5. Replace the B99 Steering Wheel Angle Sensor.
6. Verify the DTC does not set while operating the vehicle within the Conditions for Running the DTC.

If the DTC sets

Replace the K17 Electronic Brake Control Module.

If the DTC does not set

7. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

• Steering Angle Sensor Replacement
• Control Module References for Electronic Brake Control Module replacement, programming and setup

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