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Home >> Chevrolet >> 2017 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 29 (Engine Controls And Fuel - 1.8L (LKN) - DTC P0446 To DTC P2635 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P2418-P2420: Evaporative Emission (EVAP) System Leak Detection Pump Switching 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.
  2. Verify the parameters listed below do not display Malfunction when commanding the EVAP Leak Detection Pump Switching Valve On and Off with a scan tool.
    • EVAP Leak Detection Pump Switching Valve Output Circuit High Voltage Test Status
    • EVAP Leak Detection Pump Switching Valve Output Circuit Open Test Status
    • EVAP Leak Detection Pump Switching Valve Output Circuit Low Voltage Test Status
      • If Malfunction is displayed 

        Refer to Circuit/System Testing

      • 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 DTCs do not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

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