Diagnostic Instructions
DTC Descriptor
DTC C0292 : VSES Combination Sensor Circuits
Circuit/System Description
The electronic brake control module (EBCM) supplies a reference voltage of 5 volts to the yaw rate sensor lateral accelerometer and the steering wheel position sensor. The sensor supply voltage is monitored via an internal feedback circuit
to the EBCM microprocessor.
Conditions for Running the DTC
| • | Ignition voltage is greater than 9.5 volts. |
Conditions for Setting the DTC
The yaw/lateral sensor is setting an internal electronic failure.
Action Taken When the DTC Sets
| • | Vehicle stability enhancement system (VSES) is disabled |
| • | The VSES indicator turns ON. |
| • | The driver information center (DIC) displays the Service ESC 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 5-volt reference.
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Antilock Brake System Connector End Views
Electrical Information Reference
Scan Tool Reference
Scan Tool Data List
for EBCM
Circuit/System Testing
- Ignition OFF, disconnect the yaw rate sensor/lateral accelerometer connector.
- Ignition OFF, test for less than 1 ohm of resistance between the low reference circuit and ground.
| ⇒ | If greater than 1 ohm, test the low reference circuit and the EBCM ground circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the EBCM. |
- Test the lateral accelerometer signal circuit, the 5-volt reference circuit, and the low reference circuit for an open/high resistance or a short to voltage or ground.
| ⇒ | If all circuits test normal, replace the yaw rate sensor/lateral accelerometer, and clear the yaw rate sensor offset value in the EBCM. |
| ⇒ | If the DTC sets again after replacing the yaw rate sensor/lateral accelerometer,
replace the EBCM. |
Repair Instructions
Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
