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 C0292 02: VSES Combination Sensor Circuit Short To GroundDTC C0292 07: VSES Combination Sensor Circuit Voltage Above Threshold
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Yaw Rate Lateral Accelerometer Sensor Signal | C0292 02 | -- | C0292 07 | -- |
Yaw Rate Lateral Accelerometer Sensor 12-Volt Reference Signal | C0292 02 | -- | C0292 07 | -- |
Yaw Rate Lateral Accelerometer Sensor Low Reference | C0292 02 | -- | C0292 07 | -- |
Circuit/System Description
The electronic brake control module (EBCM) supplies a reference voltage of 12 volts to the yaw rate sensor/lateral accelerometer sensor and the steering angle sensor. The sensor supply 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
The EBCM detects that the sensor supply voltage is less than 11.75 volts or greater than 12.25 volts for 30 milliseconds.
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
Connector End View Reference
Electrical Information Reference
Scan Tool Reference
Control Module References for EBCM
Circuit/System Testing
- Ignition ON, observe the DTC information with the scan tool.
- Ignition OFF, disconnect the yaw rate and lateral accelerometer sensor connector.
- Ignition OFF for 5 minutes, test for less than 1 ohm of resistance between the low reference circuit terminal 6 and ground.
- Test the lateral accelerometer 12 volt reference circuit terminal 1 for a short to voltage or ground.
| ⇒ | Verify that no other DTCS have set. Refer to Diagnostic Trouble Code (DTC) List - Vehicle. |
| ⇒ | If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit test normal, replace the EBCM. |
| ⇒ | If all circuits test normal, replace the yaw rate sensor and lateral accelerometer sensor, cycle the ignition switch and perform the yaw rate sensor reference table reset procedure. |
| ⇒ | If the DTC sets again after replacing the yaw rate sensor and lateral accelerometer sensor, replace the EBCM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for EBCM replacement, setup, and programming.
