Mazda RX-8 2004 Service Highlights page 324

LINE PRESSURE CONTROL STRUCTURE
Features
• With direct electronic shift control, clutch pressure is regulated by duty-cycle solenoids (shift solenoids A, B, C,
F) and amplifier valves, and thus conventional continuously variable line pressure control does not occur.
Instead, throttle opening angle, vehicle speed, ATF temperature, and TR switch signals drive on/off type
pressure control solenoids, and switch line pressure to high or low pressure to suit engine load and vehicle
speed.
Structure
System diagram
VSS
TURBINE
SENSOR
THROTTLE
OPENING
SIGNAL
PCM
ENGINE
TORQUE
SIGNAL
CRUISE
CONTROL
SIGNAL
TFT
SENSOR
M RANGE
SWITCH
End Of Sie
AUTOMATIC TRANSMISSION
2K
2G
CAN
1Y
1V
2J
2N
1E
TCM
CHU051318901S07
05–13
PRESSURE
CONTROL
SOLENOID
2X
CHU0513S052
05–13–33