Antilock Brake System (Without UGN)
DTC C0186, C0196, or C0287 (Without UGN)
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 Signal Malfunction (Inflatable Restraint Sensing and Diagnostic Module)
DTC C0186 4B
- Lateral Acceleration Sensor Signal Calibration Not Learned (Electronic Brake Control Module)
DTC C0186 5A
- Lateral Acceleration Sensor Signal Not Plausible (Electronic Brake Control Module)
DTC C0186 71
- Lateral Acceleration Sensor Signal Invalid Data (Electronic Brake Control Module)
DTC C0196 00
- Yaw Rate Signal Malfunction (Electronic Brake Control Module and/or Inflatable Restraint Sensing and Diagnostic Module)
DTC C0196 5A
- Yaw Rate Signal Not Plausible (Electronic Brake Control Module)
DTC C0196 71
- Yaw Rate Signal Invalid Data (Electronic Brake Control Module)
DTC C0287 00
- Longitudinal Acceleration Sensor Malfunction (Inflatable Restraint Sensing and Diagnostic Module)
DTC C0287 4B
- Longitudinal Acceleration Sensor Signal Calibration Not Learned (Electronic Brake Control Module)
DTC C0287 5A
- Longitudinal Acceleration Sensor Signal Not Plausible (Electronic Brake Control Module)
DTC C0287 71
- Longitudinal Acceleration Sensor Signal Invalid Data (Electronic Brake Control Module)
Circuit/System Description
The yaw rate, lateral acceleration and longitudinal acceleration sensors are combined into one multi-axis acceleration sensor, internal to the inflatable restraint sensing and diagnostic module. 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. The inflatable restraint sensing and diagnostic module uses the multi-axis acceleration sensor to determine if the vehicle is in a roll over or near collision incident.
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
C0186 00
The lateral acceleration signal is out of the specified range.
C0186 4B
The lateral acceleration sensor is not calibrated.
C0186 5A
The lateral acceleration signal is not plausible with the yaw rate signal, steering angle signal and vehicle speed.
C0186 71
* The electronic brake control module received an invalid lateral acceleration signal.
* An open/high resistance is detected on the multi-axis acceleration signal ground circuit.
* A short to ground or open/high resistance is detected on the multi-axis acceleration ignition circuit.
C0196 00
The yaw rate signal is out of the specified range.
C0196 5A
* The yaw rate signal offset is out of the specified range.
* The yaw rate signal is not plausible with the lateral acceleration signal, the steering angle signal and the vehicle speed.
C0196 71
* A short to ground or open/high resistance is detected on the ignition circuit.
* The electronic brake control module received an invalid lateral acceleration signal.
* An open/high resistance is detected on the multi-axis acceleration signal ground circuit.
C0287 00
The longitudinal acceleration signal is out of the specified range.
C0287 4B
The longitudinal acceleration sensor is not calibrated.
C0287 5A
The longitudinal acceleration signal is not plausible with the vehicle speed.
C0287 71
* The electronic brake control module received an invalid longitudinal acceleration signal.
* An open/high resistance is detected on the multi-axis acceleration signal ground circuit.
* A short to ground or open/high resistance is detected on the multi-axis acceleration signal.
Action Taken When the DTC Sets
C0186 00, C0196 00 and C287 00 set in Inflatable Restraint Sensing and Diagnostic Module
* The Air Bag Indicator turns ON.
* The traction/stability control Off Indicator turns ON.
* The electronic brake control module disables the traction/stability for the duration of the ignition cycle.
C0186 4B, C0186 5A, C0186 71, C0196 00, C0196 5A, C0196 71, C0287 4B, C0287 5A, and C0287 71 set in Electronic Brake Control Module
* The traction/stability control Off indicator turns ON.
* The electronic brake control module disables the traction/stability 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.
Reference Information
Schematic Reference
Antilock Brake System Schematics [1][2]Antilock Brakes / Traction Control Systems
Connector End View Reference
Component Connector End Views Fuel Pump and Level Sensor Assembly
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. Verify the vehicle is not equipped with UGN.
• If equipped with UGN
Refer to DTC C0186, C018B, C0196, C019B, C027E, or C0287 (With UGN) Antilock Brake System (With UGN).
• If not equipped with UGN
2. Ignition ON.
3. Perform the Vehicle Yaw Sensor Learn Testing and Inspection procedures to complete the learn.
4. Verify DTC C0186, C0196, or C0287 is not set in the K36 Inflatable Restraint Sensing and Diagnostic Module.
• If any of the DTCs are set
Replace the K36 Inflatable Restraint Sensing and Diagnostic Module
• If none of the DTCs are set
5. Verify DTC C0186, C0196, or C0287 is not set in the K17 Electronic Brake Control Module.
• If any of the DTCs are set
1. Replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
2. Verify the DTC does not set while operating the vehicle within the Conditions for Running the DTC.
• If the DTC sets, replace the K17 Electronic Brake Control Module.
• If the DTC does not set
3. All OK.
• If none of the DTCs are set
6. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
Control Module References Control Module References for Electronic Brake Control Module or Inflatable Restraint Sensing and Diagnostic Module replacement, programming and setup