## Honda Multi Matic Transmission/CVT

#### System Description (cont'd)

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Hydraulic Flow

As the engine turns, the ATF pump starts to operate. Automatic transmission fluid (ATF) is drawn though the ATF strainer and discharged into the hydraulic circuit. Then, ATF flowing from the ATF pump flows the PH regulator valve and becomes the PH pressure. The PH pressure flows to the pulley control valve and then to the pulleys.

The PCM actuates the solenoids to control hydraulic pressure shifting pulley ratios and engaging start clutch.

Hydraulic pressure at the port is as follows:

PORT NO. | DESCRIPTION OF PRESSURE | PORT NO. | DESCRIPTION OF PRESSURE
PH | PRESSURE HIGH | SC | START CLUTCH
DN | DRIVEN PULLEY | CC | SC CONTROL
DR | DRIVE PULLEY | HLC | PH-PL CONTROL
PHC | PH CONTROL | SHC | SHIFT CONTROL
PL | PRESSURE LOW | PP | PITOT PIPE
CR | CLUTCH REDUCING | PP' | PITOT PIPE
FWD | FORWARD CLUTCH | 95 | LUBRICATION
RVS | REVERSE BRAKE | 93 | ATF COOLER
RVS' | REVERSE BRAKE | 99 | SUCTION
SA | SH-A | X | DRAIN
SI | SHIFT INHIBITOR | AX | AIR DRAIN

General Chart of Hydraulic Pressure