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Home >> Pontiac >> 2008 >> Grand Prix Base >> Repair and Diagnosis >> Brakes >> Anti-Lock Brake System, Traction Control System & Stability Control System >> Diagnostic Information and Procedures >> DTC C0186 >> Circuit/System Testing

Circuit/System Testing

  1. If DTC C0252 is set, diagnose that DTC first.
  2. Ignition OFF, disconnect the yaw and lateral acceleration sensor connector.
  3. Ignition OFF, test for less than 1 ohm of resistance between the ground circuit terminal 6 and ground.
    • If greater than 1 ohm, test the ground circuit terminal 6 and the EBCM ground circuit terminal 18 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 5, the 5 volt reference circuit terminal 1, and the ground circuit terminal 6 for an open/high resistance or a short to voltage or ground.
    • If all circuits test normal, replace the yaw and lateral acceleration sensor, and clear the yaw rate sensor offset value in the EBCM.
    • If the DTC sets again after replacing the yaw and lateral acceleration sensor, replace the EBCM.
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