C0196
DTC C0196
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 C0196 00
- Yaw Rate Circuit
DTC C0196 1A
- Yaw Rate Circuit Bias Level Out of Range
DTC C0196 3B
- Yaw Rate Circuit Internal Self Test Failed
DTC C0196 5A
- Yaw Rate Circuit Plausibility Failure
Diagnostic Fault Information
Circuit/System Description
The yaw rate and the lateral accelerometer sensors are combined into one sensor, external to the electronic brake control module (EBCM). The vehicle stability enhancement system (VSES) uses the lateral accelerometer input when calculating the desired yaw rate. The yaw/lateral accelerometer sensor communicates with the EBCM via discrete CAN Bus High and CAN Bus Low serial data circuits.
Conditions for Running the DTC
Ignition ON
Conditions for Setting the DTC
* The yaw/lateral accelerometer sensor reports an internal failure.
* The yaw/lateral accelerometer sensor learned a wrong offset value
* Incorrectly mounted yaw/lateral accelerometer sensor.
Action Taken When the DTC Sets
* The EBCM disables the VSES 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 100 consecutive drive cycles.
Diagnostic Aids
For non-SS models, an improperly centered steering angle sensor may cause this DTC to set with a known good yaw/lateral accelerometer sensor. Test drive the vehicle while observing the scan tool Steering Wheel Position parameter to ensure that the steering angle is 0° when driving the vehicle in a straight line. If the parameter reads 0°, the automatic offset learning may have adjusted up to 15° without setting another DTC. Perform the scan tool, Steering Pos. Sensor Calibration procedure.
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
Note: Verify the EBCM/VSES, Yaw Rate Sensor Input is 0.0° per second data for a stationary vehicle parked on a level surface. If greater than 2.0° per second or less than -2.0° per second this may indicate a failure in the yaw/lateral accelerometer sensor.
1. Ignition OFF, disconnect the harness connector at the yaw/lateral accelerometer sensor.
2. Ignition OFF for 60 seconds, test for less than 5 ohm between the low reference circuit terminal 1 and ground.
• If greater than the specified range, test the low reference circuit for an open/high resistance.
3. Ignition ON, test for B+ between the ignition voltage circuit terminal 4 and ground.
• If not within the specified range, test the ignition voltage circuit for a short to ground or open/high resistance.
4. Ignition OFF, disconnect the harness connector at the EBCM.
5. Ignition ON, test for less than 1 V between the serial data signal terminals listed below and ground:
* CAN Bus High serial data signal circuit terminal 18
* CAN Bus Low serial data signal circuit terminal 19
• If greater than the specified value, test the serial data signal circuit for a short to voltage.
6. Ignition OFF, test for infinite resistance between the serial data signal terminals listed below and ground:
* CAN Bus High serial data signal circuit terminal 18
* CAN Bus Low serial data signal circuit terminal 19
• If not the specified value, test the serial data signal circuit for a short to ground.
7. Test for less than 2 ohm between the serial data signal circuit terminals listed below:
* CAN Bus High serial data signal circuit terminal 18 at the EBCM harness connector and terminal 3 at the yaw/lateral accelerometer sensor harness connector.
* CAN Bus Low serial data signal circuit terminal 19 at the EBCM harness connector and terminal 2 at the yaw/lateral accelerometer sensor harness connector.
• If greater than the specified range, test the serial data signal circuit for an open/high resistance.
8. Test for infinite resistance between the CAN Bus High serial data signal circuit terminal 18 and the CAN Bus Low serial data signal circuit terminal 19.
• If not the specified value, repair the serial data signal circuits for a short together.
9. If all circuits test normal, replace the yaw/lateral accelerometer sensor. If the DTC resets, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement (Service and Repair)
* Control Module References (Programming and Relearning)for EBCM replacement, programming and setup