The electronically controlled four-speed automatic transmission consists of a torque converter, an epicyclic gear train and a hydraulically controlled clutch and brakes.
Torque from the engine to the gearbox is transmitted through a torque converter, which functions as a fluid clutch and acts as an automatic clutch. It also provides torque transmission during acceleration.
The gear drive provides forward movement in one of the 4 gears or reverse movement. The gear train components are controlled by brakes and clutches, which are hydraulically actuated. A pump located in the gearbox provides the necessary hydraulic pressure to operate the brake and clutch.
The gearbox is controlled by a selector lever with 7 positions. Position D provides automatic gear selection from 4 forward gears. The automatic downshift mechanism downshifts when the accelerator pedal is fully depressed. This mode should be used when maximum vehicle acceleration is required. If the selector lever is in position 3, the car will move only in the first three gears, and in position 2 only in the first two gears, etc. Lower gears are desirable when engine braking, when driving downhill, or to prevent unwanted high gear selection on winding roads.
Due to the complexity of the automatic transmission, any repairs must be done at a service station.
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