GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Equinox 🢒 Brakes 🢒 Antilock Brake System 🢒 DTC C0196

Diagnostic Instructions
    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    •  Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC C0196 00: Yaw Rate Circuit Electrical failure

DTC C0196 5A: Yaw Rate Circuit Erratic

DTC C0196 3B: Yaw Rate Circuit Self Test Failure

DTC C0196 1A: Yaw Rate Circuit Offset Failure

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Yaw Rate Supply Voltage Circuit

C0196 00

C0196 00

C0196 00

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Yaw Rate CAN Bus High Circuit

C0196 00

C0196 00

C0196 00

C0196 5A, 3B, 1A

Yaw Rate CAN Bus Low Circuit

C0196 00

C0196 00

C0196 00

C0196 5A, 3B, 1A

Yaw Rate Ground Circuit

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C0196 00

--

--

Circuit/System Description

The vehicle stability enhancement system (VSES) is activated by the electronic brake control module (EBCM) calculating the desired yaw rate and comparing it to the actual yaw rate input. The Yaw/Lateral sensor communicates to the EBCM on a dedicated CAN bus. The desired yaw rate is calculated from measured steering wheel position, vehicle speed, and lateral acceleration. The difference between the desired yaw rate and actual yaw rate is the yaw rate error, which is a measurement of over-steer or under-steer. If the yaw rate error becomes too large, the EBCM will attempt to correct the vehicle's yaw motion by applying differential braking to the wheels.

Conditions for Running the DTC
    • The ignition switch is in the ON position.
    • The ignition voltage is greater than 9.5 volts.

Conditions for Setting the DTC
    • The yaw/lateral combination sensor reports an internal failure.
    • The yaw/lateral combination sensor learns a wrong offset value
    • Incorrectly mounted yaw/lateral sensor.

Action Taken When the DTC Sets

One or more of the following actions may occur:

    • VSES are disabled.
    • The VSES indicator illuminates.
    • The driver information center (DIC) displays the Service ESC message.

Conditions for Clearing the DTC
    • The condition for the DTC is no longer present.
    • The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids

Possible causes of this DTC are as follows:

    • Inspect the mounting of the Yaw sensor to ensure proper orientation and installation of the sensor.
    • On a level surface, read the Yaw sensor offset value to ensure a value within the proper range.

Reference Information

Schematic Reference

Antilock Brake System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation Reference

ABS Description and Operation

Electrical Information Reference

    •  Circuit Testing
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs
    •  Connector Repairs

Scan Tool Reference

Control Module References for Scan Tool Information

Circuit/System Testing
  1. Ignition OFF, disconnect the harness connector at the Yaw Rate/Lateral Accelerometer sensor.
  2. Test for less than 1 ohm of resistance between the low reference circuit terminal 5 and ground.
    3. ⇒If greater than the specified range, test for an open/high resistance in the low reference circuit . If the circuit tests normal, replace the EBCM.
  3. Ignition ON, test for ignition voltage between the ignition circuit terminal 3 and the low reference circuit terminal 5.
    4. ⇒ If not the specified value, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
  4. Ignition OFF, disconnect the harness connector at the EBCM.
  5. Test for infinite resistance between the low reference circuit terminal 29 and ground.
    6. ⇒If greater than the specified value, test the low reference circuit for a short to ground.
  6. Ignition ON, test for 0 volts between the communication circuit terminal 18 and ground at the EBCM harness connector.

    7. ⇒If greater than the specified value, test the communication circuit for a short to voltage.
  7. Test for 0 volts between the communication circuit terminal 19 and ground.
    8. ⇒If greater than the specified value, test the communication circuit for a short to voltage.
  8. Ignition OFF, test for infinite resistance between the communication circuit terminal 18 and ground.
    9. ⇒If not the specified value, test the communication circuit for a short to ground.
  9. Test for infinite resistance between the communication circuit terminal 19 and ground.
    10. ⇒If not the specified value, test the communication circuit for a short to ground.
  10. Test for less than 1 ohm of resistance between the communication circuit terminals 18 and terminal 2.
    11. ⇒If greater than the specified range, test the communication circuit for an open/high resistance.
  11. Test for less than 1 ohm of resistance between the communication circuit terminals 19 and terminal 1.
    12. ⇒If greater than the specified range, test the communication circuit for an open/high resistance.
  12. Test for infinite resistance between the communication circuit 18 and the communication circuit 19.
    13. ⇒If not the specified value, test the communication circuits for a short together.
  13. If all circuits test normal, replace the Yaw Rate/Lateral sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Vehicle Yaw Sensor Replacement
    •  Control Module References for EBCM replacement, setup and programming