Impreza Outback Sport AWD F4-2.5L SOHC (2002)
K: AWD TRANSFER CLUTCH CONTROL (NON-TURBO MODEL
L: AWD CENTER DIFFERENTIAL CONTROL (TURBO MODEL)
1. CONTROL DESCRIPTION
The TCM controls the engagement of the center differential's multi-plate clutch (LSD) using maps that are pre-programmed based on the throttle
opening and engine speed. It selects a map according to driving conditions and use it as the control basis.
2. ORDINARY CONTROL
A specific map is given to each of the 1st to 4th gears and the reverse gear for use by the TCM to control the torque distribution appropriately
during ordinary driving conditions.
The maps are programmed in such a way that the differential action limiting torque decreases as the throttle valve opening decreases and as the
vehicle speed increases. This way of control is employed in order to reduce internal circulation of torque and also to improve steering performance
and stability of the vehicle's behavior when the accelerator pedal is released or when a downshift is performed, thus upgrading the stability
achieved by the AWD system.
3. START CONTROL
