Rocker Arm Oil Control Solenoid (VTEC Solenoid Valve) Test

Disconnect the rocker arm oil control solenoid (VTEC solenoid valve) 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).
Fig 1: Measuring Resistance Between Rocker Arm Oil Control Solenoid 1P Connector Terminal (A) & 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 a restriction. If there is a restriction, replace the rocker arm oil control solenoid (VTEC solenoid valve) filter, the engine oil filter, and the engine oil.

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

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