C0131

Circuit Description
The EBCM uses input from the brake pressure sensor for more accurate control during a vehicle stability enhancement system (VSES) event.

Conditions for Running the DTC
^ DTC C0870 is not set.
^ The ignition is ON.
^ The vehicle speed is greater than 40 km/h (24 mph).

Conditions for Setting the DTC
Voltage at the pressure sensor signal output to the EBCM falls outside the 0.25 V - 4.75 V range for more than 100 milliseconds.

Action Taken When the DTC Sets
^ A malfunction DTC is set
^ ABS, TCS and VSES are disabled
^ ABS, TCS, SERVICE VEHICLE SOON and PCS lamp indicators turn on

Conditions for Clearing the DTC
^ The condition for the DTC is no longer present
^ A history DTC will clear after 124 consecutive ignition cycles if the condition for the malfunction is no longer present.
^ Using a scan tool.

Diagnostic Aids
^ A thorough inspection of the wiring system and connectors should be performed. Failure to carefully and fully inspect the wiring system and connectors may result in misdiagnosis which may result in replacing good parts and the reappearance of the malfunction.
^ Inspection for poor connections, broken insulation, or a wire that is broken inside the insulation.
^ If an intermittent malfunction exists refer to Testing for Intermittent and Poor Connections in Diagnostic Aids under Diagrams.

Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
2. Tests for specified voltage on the brake pressure signal circuit.
3. Checks to see if voltage was below specified voltage.
4. Checks to see if voltage was below specified voltage.
5. Checks to see if voltage was above specified voltage of 5 volt reference.
6. Tests for a short to ground in the 5 volt reference circuit.
7. Tests for a short to voltage in the 5 volt reference circuit.
8. Tests for a short to ground, a high resistance, or an open in the 5 volt reference circuit.
9. Tests for a short to voltage, a high resistance, or an open in the brake pressure sensor signal circuit.
10. Tests for a high resistance or an open in the ground circuit of the brake pressure sensor.
11. Checks the brake pressure sensor connector for poor connections.
12. Checks the EBCM connector for poor connections.