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Home >> Chevrolet >> 2013 >> Impala LS >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Diagnostic Information and Procedures >> DTC C0186 >> Circuit/System Testing

Circuit/System Testing

  1. If DTC C0292 is set, diagnose that DTC first.
  2. Ignition OFF, disconnect the yaw and lateral accelerometer sensor connector.
  3. Ignition OFF, test for less than 1 ohm between the ground circuit terminal and ground.
    • If greater than 1 ohm, test the ground circuit terminal and the EBCM ground circuit terminal for a short to voltage or an open/high resistance. If the circuits test normal, replace the EBCM.
  4. Test the lateral accelerometer signal circuit terminal, the 5-volt reference circuit terminal, and the ground circuit terminal for an open/high resistance or a short to voltage or ground.
    • If all circuits test normal, replace the yaw and lateral accelerometer sensor, and clear the yaw rate sensor offset value in the EBCM.
    • If the DTC sets again after replacing the yaw and lateral accelerometer sensor, replace the EBCM.