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Home >> Chevrolet >> 2017 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 28 (Engine Controls And Fuel - 1.8L (LKN) - DTC P0010 To P0459) >> Diagnostic Information and Procedures >> DTC P0443, P0458 or P0459: Evaporative Emission (EVAP) Purge Solenoid Valve Control Circuit >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Vehicle in Service Mode, command the EVAP Purge Solenoid Valve to 50% with a scan tool. You should hear the solenoid clicking.
    • No clicking heard 

      Refer to Circuit/System testing

    • Clicking heard 
  2. Engine running, command the EVAP Purge Solenoid Valve from 0% to 50% and back to 0% with a scan tool.
  3. Verify the scan tool parameters listed below do not display Malfunction.
    • EVAP Purge Solenoid Valve Control Circuit High Voltage Test Status
    • EVAP Purge Solenoid Valve Control Circuit Open Test Status
    • EVAP Purge Solenoid Valve Control Circuit Low Voltage Test Status
      • If Malfunction is displayed 

        Refer to Circuit/System Testing.

      • If Malfunction is not displayed 
  4. Verify the EVAP Purge Solenoid Valve Control Circuit parameters above do not display Malfunction when moving the related harnesses and connectors of the Q12 Evaporative Emission Purge Solenoid Valve.
    • If Malfunction is displayed 

      Refer to Circuit/System Testing.

    • If Malfunction is not displayed 
  5. 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.
  6. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set 
  7. All OK.
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