Lower travel deactivating lash adjuster when combined with two-step variable valve lift rocker arm

A system for operating a rocker arm assembly in a cylinder deactivation mode, the system comprising:

• a two-step variable valve lift rocker arm assembly operable in a (i) low-lift mode having a low-lift valve profile and a (ii) high-lift mode having a high-lift valve profile;
• a deactivating lash adjuster operable in a latched mode and an unlatched mode;
• a controller that (i) selects operation of the rocker arm assembly in the cylinder deactivation mode, (ii) operates the rocker arm assembly in the low-lift mode based on the selection of the cylinder deactivation mode, and (iii) one of subsequent to or concurrently with operating the rocker arm assembly in the low-lift mode, operating the deactivating lash adjuster in the unlatched mode;
• and
• wherein a first amount of a total lost motion required for cylinder deactivation mode is accounted for by lost motion of the rocker arm assembly operating in the low-lift mode and a remainder amount of the total lost motion is accounted for by lost motion of the deactivating lash adjuster operating in the unlatched mode.