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Home >> Cadillac >> 2012 >> Escalade Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1114 (Anti-Lock Brake System, 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 2008 Cadillac CTS. 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 ohm of resistance between the ground circuit terminal 6 and ground.
    • If greater than the specified range, test for an open/high resistance in the ground circuit. If the circuit tests normal, replace the yaw rate/lateral accelerometer sensor.
  3. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 1 and ground.
    • If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the yaw rate/lateral accelerometer sensor.
  4. Ignition OFF, disconnect the harness connector at the EBCM.
  5. Ignition ON, test for 0 volts between the communication circuit terminal 21 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 33 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 21 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 33 and ground.
    • If not the specified value, test the communication circuit for a short to ground.
  9. Test for less than 1 ohm between the communication circuit terminals 21 and terminal 3.
    • If greater than the specified range, test the communication circuit for an open/high resistance.
  10. Test for less than 1 ohm between the communication circuit terminals 33 and 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 21 and the communication circuit 33.
    • 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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