System Functions

System Functions





'J' Gate Layout

Range Selection
The 'J' gate selector lever is connected to the transmission via a cable which operates the transmission selector shaft between positions P R N D only. The shift lever disconnects from the cable when the lever is moved across the gate from D to 4.

Movement of the lever between P R N D manually controls the flow of transmission fluid, the Transmission Control Module (TCM) having control of the forward gear selected in D.

Movement of the lever to 4, 3 and 2 positions does not manually modify the fluid flow, the TCM detects these positions using the DLS and controls the ratios electronically by energizing solenoids.

Shift Point Control
The gearshift points are controlled, by the TCM, as a function of the output speed, engine load, selector position and shift program selected. The operator has control over the shift points via the shift lever, throttle pedal movement, kickdown function and mode switch.

Mode Switch
This switch allows operator selection of two base shift modes; Normal and Sport; the switch being illuminated when Sport is selected. This function alters the values in the TCM shift point calculations.