At Low Fluid Temperature

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.

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 1: Line Pressure Characteristic (Low Fluid Temperature)

Courtesy of NISSAN MOTOR CO., U.S.A.