VTC Oil Control Solenoid Valve Removal/Test/Installation

Disconnect the VTC oil control solenoid valve 2P connector.
Remove the ground wire (A).

Fig 1: VTC Oil Control Solenoid Valve And Ground Wire With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the bolt (B) and the VTC oil control solenoid valve (C).
Check the VTC oil control solenoid valve strainer for clogging. If the strainer is clogged, replace the VTC oil control solenoid valve.
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
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the VTC valve O-ring (A).

Fig 5: VTC Valve O-Ring With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Coat a new O-ring (A) with engine oil, then install it on the valve.
Clean and dry the mating surface of the valve.
Install the valve.
NOTE: Do not install the valve while wearing cloth fibrous gloves. Be careful not to contaminate the cylinder head opening.