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Home >> Subaru >> 2004 >> Outback Base, 4D Sedan >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - Mechanism & Function >> Electro-hydraulic Control System >> Lockup Control Valve Control Items >> VTD Models >> Non-turbo models
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Non-turbo models

VTD MODELS SPECIFICATION (NON-TURBO MODELS)

Control items Description of control
Transmission control Shifting control Base shift control
  • BASE pattern
  • POWER pattern
Upshifting and downshifting are set for each range, gear and pattern according to throttle position and vehicle speed.
ABS-in-operation control Gear is shifted in accordance with the vehicle speed when ABS signal is entered.
ATF low temperature control Shifting into 4th gear is prevented when ATF temperature is below the preset value.
Automatic pattern select control POWER pattern control POWER pattern is selected when throttle opening is changed at a speed exceeding the preset value.
BASE pattern control When throttle opening is changed at a speed less than the preset value, BASE pattern is resumed.
Lockup control Base lockup control Lockup ON is set for D-range 4th gear; ON/OFF is set for all gears (except D-range 4th) and patterns. 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 throttle position, vehicle speed and range signals.
Shifting control Line pressure is regulated when shifting to lessen shifting shock.
Starting control Line pressure is lowered to a minimum so as to reduce engine cranking load.
Shift timing control Gear speed control ON/OFF timing for shift solenoid is controlled.
Lockup control When shifting, the lockup clutch is temporarily released.
Line pressure control When shifting, line pressure is controlled to the optimum level so as to reduce shifting shock.
AWD multi-plate clutch (LSD) control Ordinary transfer control Multi-plate clutch (LSD) pressure is regulated according to the torque input to the transfer and the driving condition.
Start control When starting, the LSD pressure is adjusted proportionately to the throttle value angle.
Turning control When the front and rear wheel speed ratio is less than the set value for a vehicle speed, the LSD pressure is decreased.
Slip control When a front or rear wheel starts slipping, the LSD pressure is increased.
ABS-in-operation control The LSD pressure is adjusted to the set level immediately after reception of ABS signal.
Base brake control When the brake switch is ON and throttle valve is fully closed, the LSD pressure is lowered.
1 range control The LSD pressure is increased to improve driveability.