Automatic Transmission/Transaxle: Description and Operation

A/T Electrical Parts Location





Circuit Diagram





Cross-sectional View





Hydraulic Control Circuit

Shift Mechanism





CONSTRUCTION





FUNCTION OF CLUTCH AND BRAKE





CLUTCH AND BAND CHART
*1: Operates when selector lever is set in 3 position.
*2: Oil pressure is applied to both 2nd "apply" side and 3rd "release" side of band servo piston. However, brake band does not contract because oil pressure area on the "release" side is greater than that on the "apply" side.
*3: Oil pressure is applied to 4th "apply" side in condition *2 above, and brake band contracts.
*4: A/T will not shift to 4th when selector lever is set in 3 position.
*5: Operates when selector lever is set in 3 position.
O: Operates
A: Operates when throttle opening is less than 3/16, activating engine brake.
B: Operates during "progressive" acceleration.
C: Operates but does not affect power transmission.
D: Operates when throttle opening is less than 3/16, but does not affect engine brake.

POWER TRANSMISSION





P and N Positions
^ P position
Similar to the N position, the clutches do not operate. The parking pawl engages with the parking gear to mechanically hold the output shaft so that the power train is locked.
^ N position
Power from the input shaft is not transmitted to the output shaft because the clutches do not operate.





11 Position





D1 and 21 Positions





D2, 32, 22 and 12 Positions





D3 and 33 Positions





D4 Position





R Position