During Shift Change

The necessary and adequate line pressure for shift change is set. For this reason, line pressure pattern setting corresponds to engine torque and gearshift selection. Also, line pressure characteristic corresponds to engine speed, during engine brake operation.

Fig 1: Line Pressure Characteristic (During Shift Change)

Courtesy of NISSAN NORTH AMERICA, INC.

At Low Fluid Temperature

When the A/T fluid temperature drops below the prescribed temperature, in order to speed up the action of each friction element, the line pressure is set higher than the normal line pressure characteristic.

Fig 2: Line Pressure Characteristic (Low Fluid Temperature)

Courtesy of NISSAN NORTH AMERICA, INC.