Honda Accord 2008 Manual page 887

07/11/02 08:46:45 61TA0000_140_0044
Automatic Transmission
System Description (cont'd)
Electronic Control System (cont'd)
Clutch Pressure Control
The PCM actuates 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 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 current to A/T
clutch pressure control solenoid valves A, B, and C.
＊０６
Input Shaft (Mainshaft)
Speed Sensor Signal
Output Shaft
(Countershaft)
Speed Sensor Signal
Accelerator Pedal
Position Sensor
Signal
Manifold Absolute
Pressure Sensor Signal
Engine RPM Signal
2nd Clutch
Transmission Fluid
Pressure Switch Signal
3rd Clutch
Transmission Fluid
Pressure Switch Signal
Engine Coolant
Temperature
Sensor Signal
ATF Temperature
Sensor Signal
14-42
PCM
Ignition Timing
Requirement
Actual Decision of
Driving Shift Shifting
Position Mode
Master Target of Current
Controlling Current Feedback
Correction of
Data
Correction for Engine
Torque Signal Data
Correction for Hydraulic
Pressure Applying
Timing
Correction for Engine
Coolant Temperature
Sensor Data
Correction for ATF
Temperature Sensor
Signal Data
PGM-FI
Control
System
A/T Clutch
Pressure Control
Solenoid Valves
A, B, and C