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 00: VSES Combination Sensor CircuitsDiagnostic Fault Information
Circuit | Short to Ground | Open or High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Yaw and Lateral Accelerometer Sensor Low Reference | - | C0292 00 | - | - |
Yaw and Lateral Accelerometer Sensor 12-Volt Reference | - | C0292 00 | C0292 00 | - |
Circuit/System Description
The electronic brake control module (EBCM) supplies a reference voltage of 12 volts to the yaw rate sensor/lateral acceleration 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
| • | The ignition is ON. |
| • | Ignition voltage is greater than 8 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. |
| • | The driver information center (DIC) displays the Service Stabilitrak message. |
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 automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
Diagnostic Aids
If the yaw 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 OFF, disconnect the yaw rate and lateral acceleration sensor connector.
- Ignition OFF, 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 an open/high resistance or a short to voltage or ground.
| ⇒ | If greater than 1 ohm, test the low reference circuit terminal 6 and the EBCM ground circuit terminal 25 (JL4) terminal 45 (without JL4) for an open/high resistance. If the circuits test normal, replace the EBCM. |
| ⇒ | If all circuits test normal, replace the yaw rate sensor/lateral acceleration sensor, and clear the yaw rate sensor offset value in the EBCM. |
| ⇒ | If the DTC sets again after replacing the yaw rate sensor/lateral acceleration 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
