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Home >> Pontiac >> 2008 >> G8 Base >> Repair and Diagnosis >> Brakes >> Anti-Lock Brake System, Traction Control System & Stability Control System >> Diagnostic Information and Procedures >> DTC C0186 or C0196 >> Circuit/System Testing
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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the yaw/lat sensor.
  2. Ignition OFF for 60 seconds, test for less than 5 ohms between the low reference circuit terminal 6 and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance.
  3. Ignition ON, test for B+ between the ignition voltage circuit terminal 3 and ground.
    • If not within the specified value, test the ignition voltage circuit for a short to ground or open/high resistance.
  4. Ignition OFF, disconnect the harness connector at the EBCM.
  5. Ignition ON, test for less than 1 volt between the 5 volt reference circuit terminal 1 and ground at the yaw/lat sensor.
    • If greater than the specified range, test the 5 volt reference circuit for a short to voltage.
  6. Ignition OFF, test for infinite resistance between the 5 volt reference circuit terminal 1 and ground.
    • If less than the specified value, test the 5 volt reference circuit for a short to ground.
  7. Ignition OFF, test for less than 2 ohms between the 5 volt reference circuit terminal 1 at the yaw/lat sensor harness connector and terminal 23 at the EBCM harness connector.
    • If greater than the specified range, test the 5 volt reference circuit for an open/high resistance.
  8. Ignition ON, test for less than 1 volt between the signal circuit listed below and ground.
    • Yaw rate sensor test terminal 2
    • Yaw rate sensor terminal 4
    • Combined vehicle inertial sensor terminal 5
    • If greater than the specified range, test the signal circuit for a short to voltage.
  9. Ignition OFF, test for infinite resistance between the signal circuit listed below and ground.
    • Yaw rate sensor test terminal 2
    • Yaw rate sensor terminal 4
    • Combined vehicle inertial sensor terminal 5
    • If less than the specified value, test the signal circuit for a short to ground.
  10. Test for less than 2 ohms between the signal circuit terminals listed below.
    • Yaw rate sensor test terminal 2 at the yaw sensor harness connector and terminal 37 at the EBCM harness connector.
    • Yaw rate terminal 4 at the yaw sensor harness connector and terminal 16 at the EBCM harness connector.
    • Combined vehicle inertial sensor terminal 5 at the yaw sensor harness connector and terminal 38 at the EBCM harness connector.
    • If greater than the specified range, test the signal circuit for an open/high resistance.
  11. If all circuits test normal, replace the yaw/lat sensor. If the DTC resets, replace the EBCM.
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