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Home >> Chevy Truck >> 2013 >> Express 3500 V8-6.0L >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> C Code Charts >> C0710

C0710




DTC C0710

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC C0710 17
- Steering Position 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

DTC C0710 0F
- Steering Position Signal Erratic

Diagnostic Fault Information






Circuit/System Description

The electronic brake control module (EBCM) supplies a 5 V reference and provides a low reference to the steering wheel angle sensor. The EBCM monitors the signal circuit and the three phase circuits to determine the steering wheel position. The EBCM receives three signal inputs from the steering wheel speed/position sensor. The Index Pulse signal is only High when the steering wheel is centered or within a few degrees of the straight ahead position. The 2 input signals Phase A and Phase B are approximately 90 degrees out of phase. The EBCM dynamically interprets the relationship between the Phase A and Phase B inputs, and determines 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 9 V.

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 disables the vehicle stability enhancement system 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 and the stability indicators illuminate.

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

* Before any in-depth diagnostics are performed, be aware that DTC C0710 may set if the vehicle has been modified with; suspension lift/lowering kits, the incorrect indexing of the steering shaft to the steering gear or the wrong steering gear installed, or if other than stock size wheels and tires have been installed.

* To correct a fretting condition disconnect the suspect connector and add Nyogel lubricant 760G (dielectric grease) to both sides of the connector terminals. Then reconnect the connector and wipe away any excess lubricant. This will correct the additional terminal contact resistance due to the terminal fretting corrosion.

* During diagnosis, park the vehicle on a level surface.

* The vehicle should not pull in either direction while driving straight on a level surface.

* Verify the steering wheel and steering wheel angle sensor is installed correctly.

* Verify the steering shaft coupling to the steering gear is properly installed and aligned.

* Find out from the customer the conditions under which the DTC was set. This information will help to duplicate the failure.

* The snapshot function on the scan tool can help find an intermittent DTC.

Reference Information

Schematic Reference

Antilock Brake System Schematics [1][2]Antilock Brakes / Traction Control Systems

Connector End View Reference

Component Connector End Views 1-2 Shift Solenoid (SS) Valve (M30)

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Control Module References for scan tool information.

Circuit/System Verification

Note: If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct the high resistance condition due to terminal fretting corrosion.

1. Ignition ON.

2. Verify the scan tool Steering Wheel Position 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 corresponds with the steering wheel position

3. Verify the scan tool Digital HWPS Index Pulse parameter cycles between Low and High as the steering wheel is centered and then turned through its entire range of motion.

• If the parameter does not cycle between Low and High as the steering wheel is turned
Refer to Circuit/System Testing.

• If the parameter cycles between Low and High as the steering wheel is turned

4. All OK.

Circuit/System Testing

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the steering wheel speed/position sensor. It may take up to 2 minutes for all vehicle systems to power down.

2. Test for less than 20 ohms between the low reference circuit terminal 2 and ground.

• If 20 ohms or greater

1. Ignition Off, disconnect the harness connector at the EBCM.

2. Test for less than 2 ohms in the low 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 EBCM.

• If less than 20 ohms

3. Ignition ON.

4. Test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.

• If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the EBCM.

2. Test for infinite resistance between the 5 V reference circuit and ground.

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

• If infinite resistance

3. Test to less than 2 ohms in the 5 V reference circuit end to end.

• If 2 ohms for greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, replace the EBCM.

• If greater than 5.2 V

1. Ignition OFF, disconnect the harness connector at the EBCM, ignition ON.

2. Test for less than 1 V between the 5 V reference circuit terminal 1 and ground

• If 1 V or greater, repair the short to voltage on the circuit.

• If less than 1 V, replace the EBCM.

• If between 4.8-5.2 V

5. Test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and the signal circuit terminal 6.

• If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the EBCM.

2. Test for less than 2 ohms in the signal circuit end to end.

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

• If less than 2 ohms, replace the EBCM.

• If greater than 5.2 V

1. Ignition OFF, disconnect the harness connector at the EBCM, ignition ON.

2. Test for less than 1 V between the signal circuit and ground.

• If greater than 1 V, repair the short to voltage on the circuit.

• If less than 1 V, replace the EBCM.

• If between 4.8-5.2 V

6. Ignition OFF, disconnect the harness connector at the EBCM.

7. Test for infinite resistance between the signal circuit terminal 9 and ground.

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

• If infinite resistance

8. Connect the harness connector at the EBCM.

9. Ignition ON.

Note: When measuring voltage at the steering wheel speed/position sensor harness connector, the voltage values are based on a battery charge of 12.5 V and the steering wheel is in the center position.

10. Test for 6.8-11 V between the signal circuit terminals listed below and ground.

* Terminal 3

* Terminal 4

* Terminal 5

• If less than 6.8 V

1. Ignition OFF, disconnect the harness connector at the EBCM.

2. Test for infinite resistance between the signal 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 on the signal circuit end to end.

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

• If less than 2 ohms, replace the EBCM.

• If greater than 11 V

1. Ignition OFF, disconnect the harness connector at the EBCM, ignition ON.

2. Test for less than 1 V between the signal circuit and ground.

• If 1 V or greater, repair the short to voltage on the circuit.

• If less than 1 V, replace the EBCM.

• If between 6.8-11 V

11. Test or replace the steering wheel speed/position sensor.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Steering Wheel Position Sensor or Steering Shaft Lower Bearing Replacement Service and Repair

* Control Module References Control Module References for EBCM replacement, setup, and programming

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