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Home >> Chevrolet >> 2012 >> Sonic LS, 4D Hatchback, Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls/Fuel - 1.8L - DTC Diagnostics, Troubleshooting & Diagnosis >> Diagnostic Information and Procedures >> Intake Manifold Runner Control System Diagnosis >> Circuit/System Testing
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Circuit/System Testing

  1. Inspect the linkage between the Q22 Intake Manifold Tuning Solenoid Valve and the valve at the intake manifold for the conditions listed below:
    • Linkage for being connected
    • Linkage binding
    • Interference with hoses, wiring, or any other components
    • If a condition is found, repair as necessary.
  2. Remove the linkage from the Q22 Intake Manifold Tuning Solenoid Valve.
  3. Ignition ON, disconnect the harness connector at the Q22 Intake Manifold Tuning Solenoid Valve and then reconnect. The Q22 Intake Manifold Tuning Solenoid Valve should move. Repeat procedure several times.
    • If the solenoid did not move, replace the intake manifold.
  4. Inspect the inside of the intake manifold for the following conditions:
    • Carbon build-up that limits the movement of the Q22 Intake Manifold Tuning Solenoid Valve.
    • Casting flash that limits the movement of the Q22 Intake Manifold Tuning Solenoid Valve.
    • Foreign material that limits the movement of the Q22 Intake Manifold Tuning Solenoid Valve.
      • If a condition is found, repair as necessary.
  5. If all components test normal, clean or replace the intake manifold.
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