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Home >> Hummer >> 2010 >> H3 Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 37 (Antilock Brake System With Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0186 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2010 GMC Canyon and 2010 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the Yaw Rate/Lateral Accelerometer sensor.
  2. Test for less than 1 Ω between the low reference circuit terminal 1 and ground.
    • If greater than the specified range, test for an open/high resistance in the low reference circuit.
  3. Ignition ON, test for ignition voltage between the ignition circuit terminal 4 and the low reference circuit terminal 1.
    • If not the specified value, test the ignition circuit for a short to ground or an open/high resistance.
  4. Ignition OFF, disconnect the harness connector at the EBCM.
  5. Test for infinite resistance between the low reference circuit terminal 29 and ground.
    • If greater than the specified value, test the low reference circuit for a short to ground.
  6. Ignition ON, test for 0 V between the communication circuit terminal 18 and ground at the EBCM harness connector.
    • If greater than the specified value, test the communication circuit for a short to voltage.
  7. Test for 0 V between the communication circuit terminal 19 and ground.
    • 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.
    • 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.
    • If not the specified value, test the communication circuit for a short to ground.
  10. Test for less than 1 Ω between the communication circuit terminals 18 and terminal 3.
    • If greater than the specified range, test the communication circuit for an open/high resistance.
  11. Test for less than 1 Ω between the communication circuit terminals 19 and terminal 2.
    • 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.
    • 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.
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