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