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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 35 (Engine Controls And Fuel - 1.4L (LV7) - DTC P0351 To DTC P2544 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0443, P0458, or P0459: Evaporative Emission (EVAP) Purge Solenoid Valve Control Circuit >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.

Static Test

  1. Ignition OFF, disconnect the harness connector at the Q12 Evaporative Emission Purge Solenoid Valve.
  2. Test for 10-30 Ω between the control terminal B or 2 and the ignition, terminal A or 1.
    • If not between 10-30 Ω 

      Replace the Q12 Evaporative Emission Purge Solenoid Valve.

    • If between 10-30 Ω 
  3. All OK.

Dynamic Test

  1. Ignition OFF, disconnect the harness connector at the Q12 Evaporative Emission Purge Solenoid Valve.
  2. Install a 3 A fused jumper wire between the ignition terminal A or 1 and 12 V. Install a jumper wire between the control terminal B or 2 and ground.
  3. Verify the Evaporative Emission Purge Solenoid Valve turns on & off/clicks and flows vacuum.
    • If it does not turn on & off/click or flow vacuum. 

      Replace the Q12 Evaporative Emission Purge Solenoid Valve.

    • If it turns on & off/clicks and flows vacuum. 
  4. All OK.
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