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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (2 Of 3)) >> Diagnostic Information and Procedures >> DTC P053A-P053C >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON.
  2. Command the Positive Crankcase Ventilation Heater ON and OFF with a scan tool while observing the following control circuit status parameters :
    • Positive Crankcase Ventilation Heater Control Circuit Open Test Status
    • Positive Crankcase Ventilation Heater Control Circuit Low Voltage Test Status
    • Positive Crankcase Ventilation Heater Control Circuit High Voltage Test Status

      Each parameter should not display Malfunction.

    • If Malfunction is displayed 

      Refer to Circuit/System Testing.

    • Go to next step : If Malfunction is not displayed 
  3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  4. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

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