Toyota CAMRY 2002 Service Manual page 56

CH-144
CHASSIS — U140E AND U241E AUTOMATIC TRANSAXLE
7. Line Pressure Optimal Control
Through the use of the solenoid valve SLT, the line pressure is optimally controlled in accordance with
the engine toque information, as well as with the internal operating conditions of the toque converter and
the transaxle.
Accordingly, the line pressure can be controlled minutely in accordance with the engine output, traveling
condition, and the ATF temperature, thus realizing smooth shift characteristics and optimizing the workload
in the oil pump.
Line Pressure
Primary Regulator
Pump
Solenoid Valve SLT
Fluid
Pres-
sure
Current
Throttle Pressure
Solenoid Drive Signal
Trans-
axle
Engine
ECM
Input Turbine
Speed Sensor
Fluid Temperature
Shift Position
Throttle Valve Opening
Intake Air Volume
Engine Coolant Temperature
Engine rpm
161ES26