C019B
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 5A
- Lateral Acceleration Sensor Circuit Not Plausible
DTC C0186 71
- Lateral Acceleration Sensor Circuit Invalid Data
DTC C018B 5A
- Multi-Axis 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 and lateral acceleration sensors are combined into one multi-axis acceleration sensor module, external to the electronic brake control module. The electronic brake control module supplies a 12 V reference voltage to the multi-axis acceleration sensor module. The multi-axis acceleration sensor module communicates with the electronic brake control module via the high speed controller area network (CAN) serial data circuit. The electronic brake control module activates the stability control function depending on multi-axis acceleration sensor module input.
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
C0186 5A
The lateral acceleration sensor signal is not plausible with the yaw rate sensor signal, steering angle sensor signal and vehicle speed for 0.5-2 s.
C0186 71
The lateral acceleration sensor signal offset is out of specified range.
C018B 5A
The multi-axis acceleration sensor signal is not plausible.
C0196 00
The yaw rate sensor signal is out specified range.
C0196 5A or C019B 5A
The yaw rate sensor signal is not plausible with the lateral acceleration sensor signal, steering angle sensor signal and vehicle speed. for 0.25-2 s.
C0196 71
The yaw rate sensor offset is out of specified range.
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 longitudinal acceleration sensor offset is out of specified range.
Action Taken When the DTC Sets
* The electronic brake control module disables the stability control for the duration of the ignition cycle.
* The traction control/stability control-active indicator turns ON.
Conditions for Clearing the DTC
* A current DTC clears when the diagnostic runs and passes.
* The electronic brake control module will turn OFF the indicator in the next ignition cycle.
Reference Information
Schematic Reference
Antilock Brake System Schematics [1][2]Antilock Brakes / Traction Control Systems
Connector End View Reference
Component Connector End Views Outside Rearview Mirror - Driver
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 Verification
1. Ignition OFF.
2. Inspect the B119 Multi-axis Acceleration Sensor for correct installation.
• If loose or incorrect installation
Correct the installation of the component.
• If the installation is OK
3. Ignition ON.
4. Verify that DTC C0287 4B is not set.
• If DTC C0287 4B is set
1. Perform the Vehicle Yaw Sensor Learn Testing and Inspection prior to this diagnostic.
2. Verify the DTC does not set.
• If the DTC sets,
Refer to Circuit/System Testing.
• If the DTC does not set
3. All OK.
• If DTC C0287 4B is not set
5. All OK.
Circuit/System Testing
1. Ignition OFF, and all vehicle systems OFF, 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.
2. Test for less than 5 ohms between the ground circuit terminal 6 and ground.
• If 5 ohms or greater
1. Ignition OFF.
2. Test for less than 2 ohms in the ground circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, repair the open/high resistance in the ground connection.
• If less than 5 ohms
3. Ignition ON.
4. Verify that a test lamp illuminates between the B+ circuit terminal 5 and ground.
• If the lamp does not illuminate
1. Ignition OFF, disconnect the harness connector at the K17 Electronic Brake Control Module and the B99 Steering Wheel Angle Sensor.
2. Test for less than 2 ohms in the B+ circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit
• If less than 2 ohms, replace the K17 Electronic Brake Control Module.
• If the test lamp illuminates
5. Replace the B119 Multi-axis Acceleration Sensor.
6. Verify the DTC does not set.
• If the DTC sets
Replace the K17 Electronic Brake Control Module.
• If the DTC does not set
7. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Vehicle Yaw Sensor Replacement Service and Repair
* Control Module References Control Module References for Electronic Brake Control Module replacement, programming and setup.