C0290

DTC C0290 or C0292

Circuit Description

The electronic brake control module (EBCM) supplies a reference voltage of 5 volts to the yaw rate sensor/lateral accelerometer, the steering wheel position sensor and the master cylinder pressure sensor. The sensor supply voltage is monitored via an internal feedback circuit to the EBCM microprocessor.

DTC Descriptors

This diagnostic procedure supports the following DTCs:

- DTC C0290 Devise Voltage Reference Output Circuit
- DTC C0292 Devise Voltage Reference Input Circuit

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The EBCM detects that the sensor supply voltage is less than 4.75 volts or greater than 5.25 volts for 30 milliseconds.

Action Taken When the DTC Sets

- The EBCM disables the vehicle stability enhancement system (VSES).
- The stability system caution indicator turns ON.

Test Description

The numbers below refer to the step numbers on the diagnostic table.
5. This step tests for a shorted yaw rate sensor/lateral accelerometer or steering wheel position sensor.
6. This step tests for a shorted master cylinder pressure sensor. The presence of DTC C0110 is normal during this step.

Step 6 - Step 11:

Step 12: