Switch providing on-board diagnostic feedback for electromagnetically actuated latching rocker arm assembly

A rocker arm assembly, comprising:

• an electromagnetic latch assembly comprising a latch pin and an actuator, the actuator comprising an electromagnet;
• a first rocker arm and a second rocker arm that are selectively engaged by the latch pin;
• a switch circuit comprising a switch;
• and
• a coil circuit connected in parallel with the switch circuit to power the electromagnet;
• wherein:
• the actuator is operative to actuate the latch pin between a first position and a second position;
• the rocker arm assembly has a configuration that depends on one or more latch pin positions and relative positions of the first rocker arm and the second rocker arm;
• and
• the switch is open or closed depending on the configuration of the rocker arm assembly, wherein the switch is opened and closed by relative movement between the first rocker arm and the second rocker arm.

A rocker arm assembly, comprising:

• an electromagnetic latch assembly comprising a latch pin and an actuator, the actuator comprising an electromagnet;
• a first rocker arm and a second rocker arm that are selectively engaged by the latch pin;
• a switch circuit comprising a switch;
• and
• a coil circuit connected in parallel with the switch circuit to power the electromagnet;
• wherein:
• the actuator is operative to actuate the latch pin between a first position and a second position;
• and
• the switch is opened or closed by relative motion between the first rocker arm and the second rocker arm;
• when the first rocker arm and the second rocker arm are engaged by the latch pin, the first rocker arm and the second rocker arm are prevented from undergoing the relative motion that opens or closes the switch.