Rocker Arm Oil Control Solenoid (VTEC Solenoid Valve) Test

Disconnect the rocker arm oil control solenoid (VTEC solenoid valve) 1P connector.
Measure resistance between the rocker arm oil control solenoid (VTEC solenoid valve) 1P connector terminal (A) and body ground.
- If the resistance is as specified, go to step 3.
- If the resistance is not as specified, replace the rocker arm oil control solenoid (VTEC solenoid valve).
  Resistance: 14 - 30 Ω
  
  Fig 1: Measuring Resistance Between Rocker Arm Oil Control Solenoid (VTEC Solenoid Valve) 1P Connector Terminal And Body Ground
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the rocker arm oil control solenoid (VTEC solenoid valve)/oil filter assembly (A) from the oil pump, and check the rocker arm oil control solenoid (VTEC solenoid valve) filter (B) for clogging. If there is clogging, replace the rocker arm oil control solenoid (VTEC solenoid valve) filter, the engine oil filter, and the engine oil.

Fig 2: Removing Rocker Arm Oil Control Solenoid (VTEC Solenoid Valve)/Oil Filter Assembly
Courtesy of AMERICAN HONDA MOTOR CO., INC.
If the filter is not clogged, remove the rocker arm oil control solenoid (VTEC solenoid valve) 1P connector (A) and push the valve (B) with your finger to check its movement. If valve movement is normal, check the engine oil pressure. If the valve binds or sticks, replace it.

Fig 3: Removing Rocker Arm Oil Control Solenoid (VTEC Solenoid Valve) 1P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.