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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (Antilock Brake System) >> Diagnostic Information And Procedures >> DTC C0186, C0187, C0196 Or C0287: Acceleration Sensor/Yaw Rate Signal (With UGN) >> Circuit/System Verification

Circuit/System Verification

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  1. Verify DTC C0186, C0196 or C0287 are not set.
    • Go to next step: If none of the DTCs are set 
  2. Verify the B119 Multi-axis Acceleration Sensor is installed correctly.
    • If loose or incorrect installation 

      Correct the installation of the component.

    • Go to next step: If installed correctly 
  3. Ignition OFF, all vehicle system OFF and the scan tool disconnected, disconnect the harness connector at the B119 Multi-axis Acceleration Sensor. It may take up to 2 minutes for all vehicle systems to power down.
  4. Test for less than 10 Ω between the ground circuit terminal 6 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF.
    2. Test for less 2 Ω in the ground circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 Ω 
  5. Ignition ON.
  6. Verify a test lamp illuminates between the ignition circuit terminal 5 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF, disconnect the harness connector at the K17 Electronic Brake Control Module.
    2. Test for infinite resistance between the ignition circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    3. Test for less than 2 Ω in the ignition circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K17 Electronic Brake Control Module.
    • Go to next step: If the test lamp illuminates 
  7. Replace the B119 Multi-axis Acceleration Sensor.
  8. Verify the DTC does not set while operating the vehicle within the Conditions for Running the DTC.
    • If the DTC sets 

      Replace the K17 Electronic Brake Control Module.

    • Go to next step: If the DTC does not set 
  9. All OK.
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