Low Lift Operation

Rocker arm oil control solenoids 1 and 2 are both OFF. Engine oil pressure from the oil pump is lead to OUT 1 and pushes piston A (inside the intake rocker arm No. 1 and No. 2) to the right side. This makes intake rocker arms No. 1 and No. 2 unified and the intake valve will lift with the low camshaft specification.