Honda ACCORD HYBRID 2005 Service Manual page 878

Automatic Transmission
S y s t e m D e s c r i p t i o n ( c o n t ' d )
Electronic Control System (cont'd)
Clutch Pressure Control
The PCM actuates the A/T clutch pressure control solenoid valves A, B, and C to control the clutch pressure. W h e n
shifting between gears, the clutch pressure regulated by the A/T clutch pressure control solenoid valves A, B, and C
engages and disengages the clutch s m o o t h l y .
The PCM receives input signals f r o m the various sensors and switches, performs processing data, and outputs current
to the A/T clutch pressure control solenoid valves A, B, and C.
Input Shaft
(Mainshaft)
S p e e d S e n s o r Signal
Output Shaft
(Countershaft)
S p e e d S e n s o r Signal
Accelerator Pedal
Position S e n s o r
Signal
Engine R P M Signal
Barometric Pressure
S e n s o r Signal
2nd Clutch
Transmission Fluid
Pressure Switch Signal
3rd Clutch
Transmission Fluid
Pressure Switch Signal
4th Clutch
Transmission Fluid
Pressure Switch Signal
Engine Coolant
Temperature
S e n s o r Signal
A T F Temperature
S e n s o r Signal
Actual
Driving
Shift
Position
P C M
Decision of
shifting m o d e
Master Target of
Controlling Current
Correction of
hydraulic pressure
application
timing
Correction of
engine coolant
temperature
sensor signal data
Correction of A T F
temperature
sensor data
Current
feedback
Current
feedback
Current
feedback
Current
feedback
A / T Clutch Pressure
Control S o l e n o i d
Valve A , B, and C
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