03
Clutch Pressure Control
14-45
Input Shaft (Mainshaft)
Speed Sensor Signal
Output Shaft (Countershaft)
Speed Sensor Signal
Throttle Position
Sensor Signal
Manifold Absolute
Pressure Sensor Signal
Engine RPM Signal
Engine Coolant
Temperature
Sensor Signal
Ignition timing
requirement
PGM-FI
Control
System
Master Target of
Controlling Current
Current
feedback
Correction of
Data
Correction of engine
torque signal data
Correction of engine
coolant temperature
sensor data
Correction of sequential
sportshift mode position
driving condition data
A/T Clutch
Pressure Control
Solenoid Valves
A, B, and C
PCM
Correction of hydraulic
pressure application
timing
Correction of ATF
temperature sensor
signal data
Actual
driving shift
position
Decision of
shifting
mode
ATF Temperature
Sensor Signal
Transmission Gear
Selection Switch Signal
2nd Clutch Transmission Fluid
Pressure Switch Signal
3rd Clutch Transmission Fluid
Pressure Switch Signal
Barometric
Pressure
Sensor
Signal
The PCM actuates the A/T clutch pressure control solenoid valves A, B, and C to control the clutch pressure. When
shifting between lower and higher gears, the clutch pressure regulated by the A/T clutch pressure control solenoid
valves A, B, and C engages and disengages the clutch smoothly.
The PCM receives input signals from the various sensors and switches, processes data, and outputs a current to the
A/T clutch pressure control solenoid valves A, B, and C.
(cont’d)
05/06/27 17:48:44 61S6M040_140_0046