Throttle Valve B; Modulator Valve; 2Nd Orifice Control Valve - Honda Prelude 1993 Service Manual

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Hydraulic Control (cont'd)

Thlottle V8tuo B

Throttle vave B converts changes in the throttle opening to changes in transmission hydraulic pressute. The end ot throttle

vave B contscts the throttle cam which is connected by a cable to the throttle body. The cable pulls the cam which, in turn,

moves the throttle valve B. The throttle valve B-to-cam engagement is adiustable for shitt smoothness and lock-up. Throttle

valve B controls the accumulators, to make smooth changes from one gear to snother. An assist tunction is used to lessen the

throttle load.

ModulEtor Valv6

The modulstor valve maintains line pressure Jrom the regulator, to the pressure shitt control sol€noid vatues A/B and lock-up

control solenoid valves A/8, thus maintaining accurate shi{t and lock-up characteristics.

2nd Ollflce Contiol Vslvo

For smooth shifting between 2nd and 3rd. the 2nd orifice controlvalve relieves the 2nd clutch pressure.

As 3rd clutch Dressure is incressed, the 2nd orilice controlvalve moves to uncover the oil port relieving the 2nd clutch pressure.

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