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

  1. Ignition OFF, disconnect the harness connector at the yaw rate/lateral accelerometer.
  2. Test for less than 6 ohm of resistance between the low reference circuit terminal 6 and ground.
    • 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 11.8-12.2 volts between the 12-volt reference circuit terminal 3 and ground.
    • If less than the specified range, test the 12-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
    • If greater than the specified range, test the 12-volt reference circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
  4. Ignition OFF, disconnect the harness connector at the steering angle sensor.
  5. Ignition ON, test for 0 volts between the communication circuit terminal 5 and ground.
    • If greater than the specified value, test the communication circuit for a short to voltage.
  6. Test for 0 volts between the communication circuit terminal 2 and ground.
    • If greater than the specified value, test the communication circuit for a short to voltage.
  7. Ignition OFF, test for infinite resistance between the communication circuit terminal 5 and ground.
    • If not the specified value, test the communication circuit for a short to ground.
  8. Test for infinite resistance between the communication circuit terminal 2 and ground.
    • If not the specified value, test the communication circuit for a short to ground.
  9. Test for less than 1 ohm of resistance between the yaw rate sensor circuit terminals 1 and steering wheel sensor terminal 5.
    • If greater than the specified range, test the communication circuit for an open/high resistance.
  10. Test for less than 1 ohm of resistance between the yaw rate sensor circuit terminal 2 and steering wheel sensor terminal 2.
    • If greater than the specified range, test the communication circuit for an open/high resistance.
  11. Test for infinite resistance between the communication circuit 5 and the communication circuit 2.
    • If not the specified value, test the communication circuits for a short together.
  12. If all circuits test normal, replace the yaw rate/lateral sensor.
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