Mazda RX-8 2004 Service Highlights page 332

FEEDBACK CONTROL STRUCTURE
Features
• During shift up with the accelerator pedal depressed, feedback control regulates the clutch pressure on the
engagement and release sides, according to the throttle opening angle and vehicle speed. It also uses past
gearshifts to optimize clutch pressure.
Note
• If the battery negative terminal is disconnected, feedback memory in the TCM will be erased, and thus
gearshift shock may increase. The shock, however, will decrease gradually as the vehicle is driven.
Structure
System diagram
VSS
TURBINE
SENSOR
THROTTLE
OPENING SIGNAL
ENGINE
TORQUE SIGNAL
REDUCE
TORQUE SIGNAL
ENGINE SPEED SIGNAL
TFT SENSOR
OIL PRESSURE SWITCH B
OIL PRESSURE SWITCH C
OIL PRESSURE SWITCH F
End Of Sie
AUTOMATIC TRANSMISSION
2K
2G
CAN
1Y
PCM
1V
2J
2N
2A
2F
2H
TCM
2P
2S
2V
2Y
2U
CHU051301030S13
05–13
SHIFT SOLENOID F
SHIFT SOLENOID B
SHIFT SOLENOID C
SHIFT SOLENOID A
CHU0513S057
05–13–41