VTC Oil Control Solenoid Valve Removal/Test/Replacement

1.Remove the VTC oil control solenoid valve (A).

NOTE: Install the valve in the reverse order of removal with a new O-ring (B), then check these items:

  • Clean and dry the VTC oil control solenoid valve mating surface.
  • Coat the O-ring with engine oil.
  • Do not install the VTC oil control solenoid valve while wearing fibrous gloves.
  • Be careful not to contaminate the cylinder head opening.

 

2.Check the VTC oil control solenoid valve filter for clogging. If it is clogged, replace the VTC oil control solenoid valve.

3.Note the amount of valve opening by observing the position of the piston shoulder (A) through the valve retard drain port. If it opens, replace the VTC oil control solenoid valve.

Close 

Open 

4.Connect the battery positive terminal to VTC oil control solenoid valve 2P connector terminal No. 2.

 

5.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 (0.05 in.) (open). If the inner valve does not open, replace it; then go to 7.

6.Replace the VTC oil control solenoid valve O-ring (A).

 

7.Coat a new O-ring with engine oil, then install it.

8.Clean and dry the mating surface of the valve.

9.Install the valve.

NOTE: Do not install the valve while wearing cloth fibrous gloves. Be careful not to contaminate the cylinder head opening.