Direct Clutch Solenoid Valve

The direct clutch solenoid valve is installed to control valve assembly.

Fig 1: Identifying Direct Clutch Solenoid Valve
Courtesy of NISSAN NORTH AMERICA, INC.
The direct clutch solenoid valve is controlled by the TCM in response to signals transmitted from the transmission range switch, output speed sensor and accelerator pedal position sensor. Gears will then be shifted to the optimum position.
The direct clutch solenoid valve controls the direct clutch control valve in response to a signal transmitted from the TCM.
The direct clutch solenoid valve utilizes the linear solenoid valve [N/H (normal high) type].

Fig 2: Current Versus Oil Pressure Graph
Courtesy of NISSAN NORTH AMERICA, INC.
NOTE:
- The principle of the linear solenoid valve utilizes the fact that the force pressing on the valve spool installed inside the coil increases nearly in proportion to the current. This allows it to produce a fluid pressure that is proportional to this pressing force.
- The N/H (normal high) produces hydraulic control when the coil is not energized.