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Home >> Honda >> 2021 >> Passport EX-L, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle - Service, Testing And Troubleshooting >> Description & Operation >> A/T System Description - Power Flow

A/T System Description - Power Flow

Power Flow 

Example of deceleration (power flow of 1st gear) 

When 1st gear is selected, dog clutch A, clutch D and dog clutch F are connected. Transmission input revolution is decreased by the internal gear of the transmission (gear ratio: 4.713).

GHH367175Courtesy of HONDA, U.S.A., INC.
GHH367176Courtesy of HONDA, U.S.A., INC.

Example of direct connection (power flow of 5th gear) 

When 5th gear is selected, dog clutch A, clutch B, and clutch E are connected. Transmission output revolution keeps the initial input revolution because it does not affect the internal gear of the transmission (gear ratio: 1.000).

GHH367177Courtesy of HONDA, U.S.A., INC.
GHH367178Courtesy of HONDA, U.S.A., INC.

Example of acceleration (power flow of 9th gear) 

When 9th gear is selected, clutch B, clutch D, and clutch E are connected. Transmission input revolution is increased by the internal gear of the transmission (gear ratio: 0.480).

GHH367179Courtesy of HONDA, U.S.A., INC.
GHH367180Courtesy of HONDA, U.S.A., INC.

Example of reverse (power flow of reverse gear) 

When reverse gear is selected, clutch B, clutch D, and dog clutch F are connected. Transmission input revolution decreases and turns to reverse direction by the internal gear of the transmission (gear ratio: -3.830).

GHH367181Courtesy of HONDA, U.S.A., INC.
GHH367182Courtesy of HONDA, U.S.A., INC.