C0287
DTC C0186, C018B, C0196, C019B, or C0287
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC C0186 00
- Lateral Acceleration Sensor Circuit Malfunction
DTC C0186 4B
- Lateral Acceleration Sensor Circuit Calibration Not Learned
DTC C0186 5A
- Lateral Acceleration Sensor Circuit Not Plausible
DTC C0186 71
- Lateral Acceleration Sensor Circuit Invalid Data
DTC C018B 5A
- Lateral Acceleration Sensor Signal Not Plausible
DTC C0196 00
- Yaw Rate Circuit Malfunction
DTC C0196 5A
- Yaw Rate Signal Not Plausible
DTC C0196 71
- Yaw Rate Signal Invalid Data
DTC C019B 5A
- Yaw Rate Signal Not Plausible
DTC C0287 4B
- Longitudinal Acceleration Sensor Circuit Calibration Not Learned
DTC C0287 5A
- Longitudinal Acceleration Sensor Circuit Not Plausible
DTC C0287 71
- Longitudinal Acceleration Sensor Circuit Invalid Data
Diagnostic Fault Information
Circuit/System Description
The yaw rate, lateral acceleration and longitudinal acceleration sensors are combined into one multi-axis acceleration sensor, external to the electronic brake control module. The electronic brake control module supplies ignition voltage to the multi-axis acceleration sensor. The multi-axis acceleration sensor communicates with the electronic brake control module via serial data. The electronic brake control module activates the stability control function depending on the multi-axis acceleration sensor input.
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
C0186 00
The lateral acceleration sensor signal is out specified range.
C0186 4B
The lateral acceleration sensor is not calibrated.
C0186 5A
The lateral acceleration sensor signal is not plausible with the yaw rate sensor signal, steering angle sensor signal and vehicle speed.
C0186 71
The electronic brake control module received an invalid lateral acceleration signal.
C018B 5A
The lateral acceleration sensor signal is out of the specified range.
C0196 00
The yaw rate sensor signal is out the specified range.
C0196 5A
* The yaw rate sensor offset is out of the specified range.
* The yaw rate sensor signal is not plausible with the lateral acceleration sensor signal, the steering angle sensor signal and the vehicle speed.
C0196 71
The electronic brake control module received an invalid lateral acceleration signal.
C019B 5A
The electronic brake control module has received invalid yaw rate signal.
C0287 4B
The longitudinal acceleration sensor is not calibrated.
C0287 5A
The longitudinal acceleration sensor signal is not plausible with the vehicle speed.
C0287 71
The electronic brake control module received an invalid longitudinal acceleration signal.
Action Taken When the DTC Sets
C0186 00, C0186 5A, C018B 5A, C0186 71, C0196 00, C0196 5A, C0196 71 and C019B 5A
* The traction control/stability control-active indicator turns ON.
* The electronic brake control module disables the stability control for the duration of the ignition cycle.
C0186 4B, C0287 4B, C0287 5A, and C0287 71
The electronic brake control module disables the hill start assist for the duration of the ignition cycle.
Conditions for Clearing the DTC
* The DTC clears when the diagnostic runs and passes.
* The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.
Diagnostic Aids
DTC C0186 5A and C0287 5A will set after replacing the multi-axis acceleration sensor if the sensor is not configured and setup. Perform the Multi-Axis Acceleration Sensor Module Programming and Setup Multi-Axis Acceleration Sensor Module Programming and Setup and the Vehicle Yaw Sensor Learn Vehicle Yaw Sensor Learn procedures to complete the configuration and setup.
Reference Information
Schematic Reference
Antilock Brake System Schematics [1][2]Antilock Brakes / Traction Control Systems
Connector End View Reference
Component Connector End Views Connector End Views By Name
Description and Operation
ABS Description and Operation Description and Operation
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Testing
1. Ignition ON.
2. Verify DTC C0186 5A or C0287 5A is not set.
• If either DTC is set
Perform the Multi-Axis Acceleration Sensor Module Programming and Setup Multi-Axis Acceleration Sensor Module Programming and Setup and the Vehicle Yaw Sensor Learn Vehicle Yaw Sensor Learn procedures to complete the configuration and setup.
• If either DTC is not set
3. Verify that DTC C0186 4B, or C0287 4B is not set.
• If either DTC is set
Perform the Vehicle Yaw Sensor Learn Vehicle Yaw Sensor Learn.
• If either DTC is not set
4. Verify the B119 multi-axis acceleration sensor is installed correctly.
• If loose or incorrect installation
Correct the installation of the component.
• If installed correctly
5. Ignition OFF, all vehicle system OFF, and the scan tool disconnected, disconnect the harness connector at the B119 multi-axis acceleration sensor. It may take up to 2 minutes for all vehicle systems to power down.
6. Test for less than 10 ohm between the ground circuit terminal 6 and ground.
• If 10 ohm or greater
1. Ignition OFF.
2. Test for less 2 ohm in the ground circuit end to end.
• If 2 ohm or greater, repair the open/high resistance in the circuit.
• If less than 2 ohm, repair the open/high resistance in the ground connection.
• If less than 10 ohm
7. Ignition ON.
8. Verify a test lamp illuminates between the ignition circuit terminal 5 and ground.
• If the test lamp does not illuminate
1. Ignition OFF, disconnect the harness connector at the K17 electronic brake control module.
2. Test for infinite resistance between the ignition circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance
3. Test for less than 2 ohm in the ignition circuit end to end.
• If 2 ohm or greater, repair the open/high resistance in the circuit.
• If less than 2 ohm, replace the K17 electronic brake control module.
• If the test lamp illuminates
9. Replace the B119 multi-axis acceleration sensor.
10. Verify the DTC does not set while operating the vehicle.
• If the DTC sets
Replace the K17 electronic brake control module.
• If the DTC does not set
11. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Vehicle Yaw Sensor with Vehicle Lateral and Longitudinal Accelerometer Replacement Service and Repair
* Control Module References Control Module References for electronic brake control module replacement, programming and setup