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Home >> Subaru >> 2008 >> Outback Base, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Mechanism & Function -- Automatic Transmission (4AT) >> Electro-hydraulic Control System >> Control Items
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Control Items

CONTROL ITEMS DESCRIPTION CHART

Control items Description of control
Transmission control Shifting control Base shift control Upshifting and downshifting are set for each range, gear and pattern according to the accelerator pedal position and vehicle speed.
ABS-in-operation control Gear speed is determined according to vehicle speed when ABS signal and brake signal is input.
ATF low temperature control Shifting into 4th gear is prevented when ATF temperature is below the preset value.
Sports pattern control (SPORTS light ON) Sports pattern is selected when the select lever is moved to the manual mode position.
Base pattern control (SPORTS light OFF) Base pattern is selected when the select lever is in D range.
Lockup control Base lockup control Lockup control is performed according to throttle position and vehicle speed. (Basically lockup is OFF during gear shifting.)
Smooth control Smooth lockup is performed when lockup is switched on.
Line pressure control Ordinary control Line pressure is regulated according to the accelerator pedal position and vehicle speed signals.
Shift timing control Gear speed control Controls each solenoid.
Lockup control When shifting, the lockup clutch is temporarily released.
Adaptive control Accelerator pedal quick return control When the accelerator pedal is quickly released from a depressed condition, the gear is held in the current speed.
Accelerator pedal quick depressing control When the accelerator pedal is quickly depressed, the transmission down shifts immediately.
Map switch control Switches the shift point setting according to the driving condition.
Braking control To ensure engine braking effect during braking and improve the re-acceleration performance, the transmission is downshifted in accordance with the deceleration.
CAN communication signals control Sends and receives vehicle information between control modules and controls each module.
AWD transfer clutch control Ordinary transfer control Transfer clutch pressure is regulated according to the throttle valve angle, vehicle speed, and engine torque.
Slip control Regulates transfer clutch pressure in accordance with the amount of slip.
Turning control Transfer clutch pressure is reduced after detecting a turn.
ABS-in-operation control Transfer clutch pressure is adjusted to a set level immediately after reception of ABS signal.