LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Controls And Fuel - 2.0L (LUZ) Diesel - DTC P0016 To DTC P0406) >> Diagnostic Information and Procedures >> DTC P02E0, P02E2, P02E3, P02EB, P122C, P122E or P122F: Intake Air Flow Valve Control Circuit >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Verify the conditions listed below do not exist:
    • Intake air flow valve blade that is not in the rest position.
    • Intake air flow valve blade that is binding open or closed.
    • Intake air flow valve blade that opens or closes without spring pressure.
    • Dirt, debris or coking in the intake air flow valve.
    • Damaged intake air flow valve blade or shaft.
    • If a condition exists 

      Test or replace the component as necessary.

    • If none of the conditions exist 
  2. Ignition OFF, disconnect the harness connector at the Q20 Intake Air Flow Valve. Ignition ON.
  3. Verify a test lamp illuminates between the valve open control circuit terminal 1 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF, remove the test lamp.
    2. Disconnect the harness connector at the K20 Engine Control Module.
    3. Test for less than 2 Ω in the valve open control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω
    4. Test for infinite resistance between the valve open control circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K20 Engine Control Module
    • If the test lamp illuminates 
  4. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module. Ignition ON.
  5. Verify a test lamp does not illuminate between the valve open control circuit terminal 1 and ground.
    • If the test lamp illuminates 

      Repair the short to voltage on the circuit.

    • If the test lamp does not illuminate 
  6. Ignition OFF, connect the harness connector at the K20 Engine Control Module. Ignition ON.
  7. Verify a test lamp illuminates between the valve close control circuit terminal 2 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF, remove the test lamp.
    2. Disconnect the harness connector at the K20 Engine Control Module.
    3. Test for less than 2 Ω in the valve close control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω
    4. Test for infinite resistance between the valve close control circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K20 Engine Control Module
    • If the test lamp illuminates 
  8. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module. Ignition ON.
  9. Verify a test lamp does not illuminate between the valve close control circuit terminal 2 and ground.
    • If the test lamp illuminates 

      Repair the short to voltage on the circuit.

    • If the test lamp does not illuminate 
  10. Replace the Q20 Intake Air Flow Valve.
scientia non olet · About LEMON Manuals