Honda Civic 1998 Service Manual page 613

Description
Hydraulic Gontrol (cont'dl
Secondary Valve Body
The secondary valve body contains the PH regulator valve, the clutch reducing valve, the start ciutch valve accumulator,
and the shift inhibitor valve.
. PH Regulatol Valve
The PH regulator valve maintains hydraulic pressure supplied from the ATF pump, and supplies PH pressure to the
hydraulic control circuit and the lubrication circuit. PH pressure is regulated at the PH regulator valve by the PH control
pressure (PHC) from the PH control valve.
Clutch Reducing Valve
The clutch reducing valve receives PH pressure from the PH regulator valve and regulates the clutch reducing pressure
lCR). The clutch redLrcing valve supplies clutch pressure (CR) to the manual valve and the start clutch control valve, and
supplies signal pressure to the PH-PL pressure control valve, the shift control valve, and the inhibitor solenoid valve.
Start Clutch Valve Accumulator
The start clutch valve accumulator stabilizes the hydraulic pressure that is supplied to the start clutch.
Shift lnhibitor Valve
The shift inhibitor valve switches the fluid passage to switch the start clutch control from electronic control to hydraulic
control when the electronic control system is faulty. lt also supplies clutch reducing pressure (CR) to the pitot regulator
valve and the pitot lubrication pipe.
START CLUTCH VALVE
SECONDARY VALVE
BOOY
SHIFT INHIBITOR VALVE
CLUTCH REDUCING VALVE
PH REGULATOR VAL
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