Electric Controlled Coupling

Fig 1: Identifying Electric Controlled Coupling Operation Diagram

Courtesy of NISSAN NORTH AMERICA, INC.

AWD control unit supplies command current to electric controlled coupling (AWD solenoid).
Control clutch is engaged by electromagnet and torque is detected in control clutch.
The cam operates in response to control clutch torque and applies pressure to main clutch.
Main clutch transmits torque to front wheels according to pressing power.
- Transmission torque to front wheels is determined according to command current.
  
  Fig 2: Identifying Electric Controlled Coupling Current And Torque Characteristics Graph
  Courtesy of NISSAN NORTH AMERICA, INC.