2009 Acura CSX Base, AutomaticFACTORY OEM SERVICE PROCEDURE

VTC Oil Control Solenoid Valve Removal/Test/Installation

  1. Disconnect the VTC oil control solenoid valve 2P connector.
  2. Remove the ground wire (A).
    Fig 1: VTC Oil Control Solenoid Valve And Ground Wire With Torque Specifications
    G06264670Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Remove the bolt (B) and the VTC oil control solenoid valve (C).
  4. Check the VTC oil control solenoid valve strainer for clogging. If the strainer is clogged, replace the VTC oil control solenoid valve.
  5. Note the amount of valve opening by observing the position of the piston shoulder (A) through the valve retard drain port. If you see the shoulder of the piston, the valve is open and must be replaced.

    Closed 

    Fig 2: Identifying Piston Shoulder Closed Position
    G06264671Courtesy of AMERICAN HONDA MOTOR CO., INC.
  6. Connect the battery positive terminal to VTC oil control solenoid valve 2P connector terminal No. 2.
    Fig 3: Connecting Battery Positive Terminal To VTC Oil Control Solenoid Valve 2P Connector Terminal 2
    G06264672Courtesy of AMERICAN HONDA MOTOR CO., INC.
  7. Connect the battery negative terminal to VTC oil control solenoid valve 2P connector terminal No. 1. Appearance of inner valve (A) in the port should be at least 1.2 mm (1/16 in.). If the inner valve does not open, replace it; then go to step 7.

    Open 

    Fig 4: Identifying Piston Shoulder Open Position
    G06264673Courtesy of AMERICAN HONDA MOTOR CO., INC.
  8. Remove the VTC valve O-ring (A).
    Fig 5: VTC Valve O-Ring With Torque Specifications
    G06264674Courtesy of AMERICAN HONDA MOTOR CO., INC.
  9. Coat a new O-ring (A) with engine oil, then install it on the valve.
  10. Clean and dry the mating surface of the valve.
  11. Install the valve.
    NOTE: Do not install the valve while wearing cloth fibrous gloves. Be careful not to contaminate the cylinder head opening.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.