Shift Control
WARNING: This page is about a different car, the 2003 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
In order to select the gear ratio which can obtain the driving force in accordance with driver's intention and the vehicle condition, monitor the driving conditions, such as the vehicle speed and the throttle position, select the appropriate gear ratio, and determine how to change the gear before reaching it in the TCM. Then send the command to the step motor, and control the flow-in/flow-out of line pressure from the primary pulley to determine the position of the moving-pulley and control the gear ratio.
NOTE:
The gear ratio is set for every position separately.