Electric folding rear head restraints

Fig 1: Electric Folding Rear Head Restraints Input And Output Signals

Courtesy of VOLVO CARS OF NORTH AMERICA.

The rear head restraints fold down when the switch on the climate control module (CCM) (3/112) is pressed. The climate control module (CCM) transmits a request via the Controller area network (CAN) to the rear electronic module (REM) (4/58) to activate the function. The rear electronic module (REM) activates the relay (2/75). The solenoids (8/59-60) in the head restraints are then powered by the relay.