C019B
DTC C0186, C0196, or C019B
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 5A
- Lateral Acceleration Sensor Circuit Not Plausible
DTC C0186 71
- Lateral Acceleration Sensor Circuit Invalid Data
DTC C0196 00
- Yaw Rate Signal 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
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 (EBCM). The EBCM supplies a 12 V reference voltage to the multi-axis acceleration sensor module. The multi-axis acceleration sensor module communicates with the EBCM via the high speed controller area network (CAN) serial data circuit. The EBCM activates the stability control function depending on multi-axis acceleration sensor module input.
Conditions for Running the DTC
C0186 00
* Ignition ON
* Vehicle travelling
Conditions for Setting the DTC
C0186 00
* The lateral acceleration sensor signal is out of specified range for 1.6 s.
* The lateral acceleration sensor signal offset is out of specified range for 0.4 s.
C0186 5A
The lateral acceleration sensor signal is not plausible with the yaw rate sensor signal, steering angle sensor signal and vehicle speed for 1.6 s.
C0186 71
The EBCM has received invalid serial data from the multi-axis acceleration sensor module.
C0196 00
* The yaw rate sensor signal is out of specified range for 10 s.
* The yaw rate sensor signal offset is out of specified range for 1.6 s.
C0196 5A
* The yaw rate sensor signal is not plausible with the lateral acceleration sensor signal, steering angle sensor signal and vehicle speed for 1.6 s
* The yaw rate sensor signal is out of specified range for 0.5-5 s.
C0196 71
The EBCM has received invalid serial data from the multi-axis acceleration sensor module.
C019B 5A
The yaw rate sensor signal is out of specified range.
Action Taken When the DTC Sets
* The EBCM disables the traction control and 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 EBCM will turn OFF the indicators and enable the system functions in the next ignition cycle.
Reference Information
Schematic Reference
Antilock Brake System Schematics (Electrical Diagrams)
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 (Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition ON, verify that DTC C0186, C0196, or C019B is not present.
• If any listed DTC is present, perform the Vehicle Yaw Sensor Learn (Testing and Inspection) prior to this diagnostic.
2. Inspect the B119 Multi-axis Acceleration Sensor for correct installation.
• If loose or incorrect installation is diagnosed, correct the installation of the component.
3. Ignition OFF, disconnect the harness connector at the B119 Multi-axis Acceleration Sensor.
4. Test for less than 5 ohm between the ground circuit terminal 6 and ground.
• If greater than the specified value, test the ground circuit for an open/high resistance.
5. Ignition ON, test for greater than 11 V between the 12 V reference circuit terminal 5 and ground.
• If less than the specified value, test the 12 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K17 Electronic Brake Control Module (EBCM).
6. If all circuits test normal, replace the B119 Multi-axis Acceleration Sensor and verify the DTC does not reset.
• If the DTC resets, replace the K17 Electronic Brake Control Module (EBCM).
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Vehicle Yaw Sensor Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for EBCM replacement, setup and programming