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C0292




DTC C0292

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 C0292 02
- VSES Combination Sensor Circuit Short To Ground

DTC C0292 07
- VSES Combination Sensor Circuit Voltage Above Threshold

Diagnostic Fault Information






Circuit/System Description

The stability control system is activated by the electronic brake control module (EBCM) by calculating the desired yaw rate and comparing it to the actual yaw rate input. The yaw and lateral accelerometer sensor communicates with the EBCM on a dedicated CAN bus. The desired yaw rate is calculated from the measured steering wheel position, vehicle speed, and lateral acceleration. The difference between the desired yaw rate and actual yaw rate is the yaw rate error, which is a measurement of over-steer or under-steer. If the yaw rate error becomes too large, the EBCM will attempt to correct the vehicle's yaw motion by applying differential braking to the wheels.

The electronic brake control module supplies a 5 V reference and provides a low reference to the steering wheel angle sensor along with ignition voltage to the yaw and lateral accelerometer sensor. The yaw and lateral accelerometer sensor ignition voltage is monitored via an internal feedback circuit to the EBCM microprocessor.

Conditions for Running the DTC

* Ignition ON.

* Ignition voltage is greater than 10 volts.

Conditions for Setting the DTC

C0292 02

The EBCM detects that the 5 V reference circuit is shorted to ground.

C0292 07

* The EBCM detects that the yaw and lateral accelerometer sensor ignition circuit is shorted to ground.

* The EBCM detects that the steering angle sensor 5 V reference circuit is shorted to ground or shorted to B+.

* The EBCM detects that the steering angle sensor low reference circuit is open or has high resistance.

Action Taken When the DTC Sets

* The EBCM turns OFF the 12-volt reference circuit, until the ignition is cycled.

* The EBCM disables the traction control system (TCS)/vehicle stability enhancement system (VSES) for the duration of the ignition cycle.

Conditions for Clearing the DTC

* The condition for setting the DTC is no longer present and the DTC is cleared with a scan tool.

* The EBCM clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids

If the yaw rate sensor and lateral accelerometer sensor is disconnected, DTCs will set and the EBCM will not provide 12-volt reference.

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 EBCM

Circuit/System Testing

1. Ignition ON.

2. Verify that DTC U0137, U0186, U1827 or C0710 are not set.

• If any of the DTCs are set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.

• If none of the DTCs are set

3. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the steering angle sensor. It may take up to 2 minutes for all vehicle systems to power down.

4. Test for less than 10 ohms between the low reference circuit terminal 2 and ground.

• If 10 ohms or greater

1. Ignition OFF, disconnect the harness connector at the electronic brake control module.

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 electronic brake control module.

• If less than 10 ohms

5. Ignition ON.

6. 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 electronic brake control module.

2. Test for infinite resistance in 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 for less than 2 ohms in the 5 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 electronic brake control module.

• If greater than 5.2 V

1. Ignition OFF, disconnect the harness connect at the electronic brake control module, ignition ON.

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

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

• If less than 1 V, replace the electronic brake control module.

• If between 4.8-5.2 V

7. Ignition OFF, disconnect the harness connector at the electronic brake control module.

8. Test for infinite resistance between the signal circuit terminal 6 and ground.

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

• If Infinite resistance

9. Connect the harness connector at the electronic brake control module and disconnect the harness connector at the yaw and lateral accelerometer sensor.

10. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down.

11. Test for less than 10 ohms between the low reference circuit terminal 6 and ground.

• If 10 ohms or greater

1. Ignition OFF, disconnect the harness connector at the electronic brake control module.

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 electronic brake control module.

• If less than 10 ohms

12. Ignition ON.

13. Verify that a test lamp illuminates between the ignition circuit terminal 1 and ground.

• If the test lamp does not illuminate

1. Ignition OFF, disconnect the harness connector at the electronic brake control module.

2. Test for infinite resistance between the ignition 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 ignition circuit end to end.

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

• If less than 2 ohms, replace the electronic brake control module.

• If the test lamp illuminates

14. Replace the yaw and lateral accelerometer sensor.

15. Verify the DTC does not set while operating the vehicle under the Conditions for Running the DTC.

• If the DTC sets
Replace the steering angle sensor.

• If the DTC does not set

16. All OK.

Repair Instructions

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

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

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