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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P040B - P204D)) >> Diagnostic Information And Procedures >> DTC P053A, P053B, Or P053C: Positive Crankcase Ventilation Heater Control Circuit >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  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 

      Refer to Circuit/System Testing.

    • Go to next step: If not Malfunction 
  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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