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Normal valve lift mode 2

Rocker arm oil control solenoid A is off and rocker arm oil control solenoid B is on. Engine oil pressure from the oil pump passes the spool valve and the rocker arm. Engine oil pressure is applied to the intake side pistons and the exhaust side pistons. This causes the primary and secondary rocker arms to shift the valves to their normal lift positions. By turning off rocker arm oil control solenoid A only, the spool valve is changed to normal valve lift mode 2 quickly. It enables the valve lift to change from valve pause mode to the normal lift position quickly. In this mode, the VTEC system is checked for about 2 seconds.

  Rocker arm oil control solenoid A Rocker arm oil control solenoid B Rocker arm oil pressure sensor A Rocker arm oil pressure sensor B Rocker arm operation position
Normal valve lift mode 2 OFF ON High High Normal lift position
Fig 1: Rocker Arm Oil Control Valve Operation Diagram - Normal Valve Lift Mode 2
G08092191Courtesy of AMERICAN HONDA MOTOR CO., INC.