C0287
DTC C0186, C0196, 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 Accelerometer Circuit
DTC C0186 09
- Lateral Accelerometer Circuit Rate of Change Above Threshold
DTC C0186 11
- Lateral Accelerometer Circuit Above Maximum Threshold
DTC C0186 18
- Lateral Accelerometer Circuit Signal Amplitude Less Than Minimum
DTC C0196 00
- Yaw Rate Circuit
DTC C0196 0A
- Yaw Rate Circuit Rate of Change Below Threshold
DTC C0196 09
- Yaw Rate Circuit Rate of Change Above Threshold
DTC C0196 11
- Yaw Rate Circuit Above Maximum Threshold
DTC C0196 18
- Yaw Rate Circuit Signal Amplitude Less Than Minimum
DTC C0287 00
- Longitudinal Acceleration Sensor Circuit
DTC C0287 09
- Longitudinal Acceleration Sensor Circuit Rate of Change Above Threshold
DTC C0287 11
- Longitudinal Acceleration Sensor Circuit Above Maximum Threshold
DTC C0287 18
- Longitudinal Acceleration Sensor Circuit Signal Amplitude Less Than Minimum
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 (EBCM). The EBCM supplies a 12 V reference voltage to the multi-axis acceleration sensor. The multi-axis acceleration sensor 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 input.
Conditions for Running the DTC
* Ignition ON.
* The ignition voltage is greater than 10 V.
Conditions for Setting the DTC
C0186 00, C0186 11, C0186 18, C0196 0A, C0287 00, C0287 09, C0287 11 or C0287 18
The yaw/lateral accelerometer sensor fails an internal self test.
C0196 00, C0196 11, or C0196 18
The yaw sensor is out of specified range.
C0186 09, C0196 09, C0287 00, C0287 09 or C0287 11
The yaw/lateral accelerometer sensor is not mounted properly.
Action Taken When the DTC Sets
* The EBCM disables the antilock brake system (ABS), traction control and the vehicle stability enhancement system for the duration of the ignition cycle.
* A driver information center message and/or a warning indicator may be displayed.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.
Reference Information
Schematic Reference
Antilock Brake System Schematics [1][2]Antilock Brakes / Traction Control Systems
Connector End View Reference
Component Connector End Views Hybrid/EV Battery Pack X1 A4
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 ON, verify that DTC U0125 are not set.
• If the DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.
2. Verify the B119 Multi-axis Acceleration Sensor is mounted properly.
• If not mounted properly, refer Vehicle Yaw Sensor with Vehicle Lateral and Longitudinal Accelerometer Replacement Service and Repair.
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 10 ohm between the ground circuit terminal 6 and ground.
• If 10 ohm or greater
1. Ignition OFF
2. Test for less than 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 that 10 ohm
3. Ignition ON.
4. Test for greater than 11 V between the ignition circuit terminal 5 and ground.
• If less than 11 V
1. Ignition OFF, disconnect the harness connector at the K17 EBCM.
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 EBCM.
• If 11 V or greater
5. Replace the B119 multi-axis acceleration sensor and verify the DTC does not reset.
• If the DTC resets, replace the K17 EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Vehicle Yaw Sensor with Vehicle Lateral and Longitudinal Accelerometer Replacement Service and Repair
* Control Module References Control Module References for EBCM replacement, programming and setup