POWER FLOW OPERATION

B3E051701030A08

Component description

Component

Function

Forward clutch
Transmits the input torque from the turbine shaft to the front sun gear.
Operates in the forward range of the first, second, or third gear position.
3-4 clutch
Transmits the input torque from the turbine shaft to the rear planetary carrier.
Operates in the forward range of the third or fourth gear position.
Reverse clutch
Transmits the input torque from the turbine shaft to the rear sun gear.
Operates when the vehicle is backing up.
2-4 brake band
Locks rotation of the reverse drum and fixes the rear sun gear.
Operates in the second or fourth gear position.
Low and reverse brake
Fixes the rotation of the front internal gear.
Operates when the vehicle is backing up or in the first gear position (L range HOLD and M range).
One-way clutch
Locks the counterclockwise rotation of the front internal gear in the first gear position.
Planetary gear
The planetary gear functions as a transmission due to the engagement/ disengagement of clutches and/or brakes, converts the transmitted driving force of the turbine shaft and transmits it to the output gear.

Note
• All directions of rotation are viewed from the torque converter.

1GR (D range)

.

1
Input
2
Forward clutch
3
One-way clutch
4
Front planetary carrier
5
Front sun gear
6
Front pinion gear
7
Front internal gear
8
Primary gear
9
Secondary gear
10
Output gear
11
Ring gear (Differential)
12
Output

1GR (4AT: L range HOLD, Sport AT: M range)

.

1
Input
2
Forward clutch
3
One-way clutch
4
Low and reverse brake
5
Front planetary carrier
6
Front sun gear
7
Front pinion gear
8
Front internal gear
9
Primary gear
10
Secondary gear
11
Output gear
12
Ring gear (Differential)
13
Output

2GR

.

1
Input
2
Forward clutch
3
2-4 brake band
4
Rear sun gear
5
Rear pinion gear
6
Rear planetary carrier
7
Rear internal gear
8
Front planetary carrier
9
Front sun gear
10
Front pinion gear
11
Front internal gear
12
Primary gear
13
Secondary gear
14
Output gear
15
Ring gear (Differential)
16
Output

3GR

.

1
Input
2
Forward clutch
3
3-4 clutch
4
Rear sun gear
5
Rear pinion gear
6
Rear planetary carrier
7
Rear internal gear
8
Front sun gear
9
Front pinion gear
10
Front internal gear
11
Primary gear
12
Secondary gear
13
Output gear
14
Ring gear (Differential)
15
Output

4GR

.

1
Input
2
2-4 brake band
3
3-4 clutch
4
Rear sun gear
5
Rear pinion gear
6
Rear internal gear
7
Front planetary carrier
8
Primary gear
9
Secondary gear
10
Output gear
11
Ring gear (Differential)
12
Output

R position

.

1
Input
2
Low and reverse brake
3
Reverse clutch
4
Rear sun gear
5
Rear pinion gear
6
Rear internal gear
7
Front planetary carrier
8
Primary gear
9
Secondary gear
10
Output gear
11
Ring gear (Differential)
12
Output