C0875

DTC C0875

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.



DTC Descriptor
DTC C0875 00
- Device Voltage Reference Input 2 Circuit




Diagnostic Fault Information






Circuit Description

The yaw rate sensor reference voltage is monitored for an over or under voltage condition.


Conditions for Running the DTC

* The ignition is ON.
* The vehicle speed is greater than 40 km/h (25 mph).



Conditions for Setting the DTC

A malfunction is detected if the supply voltage is above 2.9 volts or below 2.1 volts for more than 200 milliseconds.


Action Taken When the DTC Sets

* A malfunction DTC is set.
* The traction control system (TCS) and vehicle stability enhancement system (VSES) are disabled.
* The SERVICE VEHICLE SOON and Stability Off lamp indicators are ON.



Conditions for Clearing the DTC

* The condition for the DTC is no longer present.
* A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
* Using a scan tool.
* The electronic brake control module (EBCM) automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.



Diagnostic Aids

Possible causes of this DTC are the following conditions:

* An open in the yaw rate sensor supply voltage circuit.
* A short to ground in the yaw rate sensor supply voltage circuit.
* A short to B+ in the yaw rate sensor supply voltage circuit.



Reference Information
Schematic Reference

Antilock Brake System Schematics ([1][2]Antilock Brakes / Traction Control Systems)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

ABS Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information


Circuit/System Testing

1. Ignition OFF, disconnect the EBCM harness connector at the Yaw and Lateral Acceleration Sensor.
2. Ignition OFF, with a DMM test for less than 5.0 ohms of resistance between the Yaw and Lateral Acceleration Sensor low reference circuit terminal 6 and ground.

• If greater than the specified range, with the DMM test the low reference terminal 6 circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.

3. Ignition ON, with a DMM test for 2.1-2.9 volts between the Yaw and Lateral Acceleration Sensor 5-volt reference circuit terminal 1 and ground.

• If less than the specified range, with the DMM test the 5-volt reference circuit terminal 1 for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
• If greater than the specified range, with the DMM test the 5-volt reference circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the EBCM.

4. With the DMM, verify the Yaw and Lateral Acceleration Sensor signal circuit terminal 4 range is less than 2.1 volts.

• If greater than the specified value, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the EBCM.

5. Install a 3A fused jumper wire between the Yaw and Lateral Acceleration Sensor signal circuit terminal 2 and the Yaw and Lateral Acceleration Sensor 5-volt reference circuit terminal 3. With a DMM verify the voltage value is greater than 2.9 volts.

• If less than the specified value, test the signal circuit terminal 2 for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.

6. If all circuits test normal, test or replace the Yaw and Lateral Acceleration Sensor.



Component Testing

1. Install a 3A fused jumper wire between the Yaw and Lateral Acceleration Sensor 5-volt reference terminal 1 and 5 volts. Install a jumper wire between the low reference terminal 6 and ground.
2. Sweep the sensor through the entire range while monitoring the resistance between the signal circuit terminal 4 and the low reference circuit terminal 6. The voltage should vary between 2.1-2.9 volts without any spikes or dropouts.

• If not within the specified range or is erratic, replace the Yaw and Lateral Acceleration Sensor.




Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for EBCM replacement, setup, and programming