Page 559 of 796

01-8
1. OVERVIEW
▶DC 5-Speed Automatic Transmission
DCAG 5-speed automatic transmission is an electronically controlled 5-speed transmission with a
lockup clutch in the torque converter. The ratios for the gears are realized by three planetary gear sets.
The 5th gear is designed with a step-up ratio of 0.83 as an overdrive. The selector lever is controlled by
electronically and mechanically. The gears are shifted by the corresponding combination of three
hydraulically actuated multiple-disc brakes, three hydraulically actuated multiple-disc clutches and two
mechanical one-way clutches. This electronically controlled automatic transmission adjusts the
operating pressure to provide proper shifting in relation to engine power. This function improves shifting
quality significantly. And, the driver can select "S" (Standard) mode or "W" (Winter) mode according to
the driving conditions. This automatic transmission provides two gears even during reverse driving. The
internal sensors and controls are connected to TCU by cylindrical 13-pin connector.
DCAG 5-speed automatic transmission offers the following advantages:
Improved shifting quality
More gears
Extended working life and reliability
Reduced fuel consumption 1.
2.
3.
4.
DC A/T Assembly Number
(With T/Converter)
A/T Serial Number
DC A/T Variant Number 1.
2.
3.DC A/T Assembly Number
(With T/Converter)
Base model AT type
A/T Serial Number 1.
2.
3.
Page 562 of 796
01-113650-01
▶1st Gear (3.932)
Torque converter lockup clutch
Engine speed
Transmission, input shaft
1st gear ratio
2nd gear ratio 16.
A.
B.
C.
D. 3rd gear ratio
Mounting elements
Rear planetary gear set
Stator E.
F.
H.
L.Center planetary gear set
Impeller
Turbine wheel
Front planetary gear set M.
P.
T.
V.
Input shaft: Clockwise rotation
Front sun gear: Locked by F1 and B1, Planetary gear carrier: Rotation with reduced speed
Rear ring gear: Counterclockwise rotation
Rear sun gear: Locked by F2 and B2, Planetary gear carrier: Clockwise rotation with reduced
speed
Center ring gear: Clockwise rotation
Center sun gear: Locked by B2, Rotation with reduced speed
Output shaft: Clockwise rotation -
-
-
-
-
-
-
Gear C1 C2 C3 B1 B2 B3 F1 F2 Lockup clutch
1● ● ● ● ●
3) 3)
3) Overrun
Page 563 of 796
01-12
▶2nd Gear (2.408)
Torque converter lockup clutch
Engine speed
Transmission, input shaft
1st gear ratio 16.
A.
B.
C.2nd gear ratio
Mounting elements
Rear planetary gear set
Stator D.
E.
H.
L.Center planetary gear set
Impeller
Turbine wheel
Front planetary gear set M.
P.
T.
V.
Input shaft: Clockwise rotation
Sun gear and planetary gear carrier: Clockwise rotation by C1 activation
Rear ring gear: Clockwise rotation
Rear sun gear: Locked by F2 and B2, Planetary gear carrier: Rotation with reduced speed
Center ring gear: Clockwise rotation
Sun gear: Locked by B2, Planetary gear carrier: Rotation with reduced speed
Output shaft: Clockwise rotation -
-
-
-
-
-
-
Gear C1 C2 C3 B1 B2 B3 F1 F2
2 ● ● ● ●
3)
3) Overrun
Page 564 of 796
01-133650-01
▶3rd Gear (1.486)
Torque converter lockup clutch
Engine speed
Transmission, input shaft
1st gear ratio 16.
A.
B.
C.Mounting elements
Rear planetary gear set
Stator
Center planetary gear set D.
H.
L.
M.Impeller
Turbine wheel
Front planetary gear set P.
T.
V.
Input shaft: Clockwise rotation
Front ring gear: Clockwise rotation
Center ring gear: Clockwise rotation by clutch 2 activation (direct connection)
Center sun gear: Locked by B2, Planetary gear carrier: Clockwise rotation with reduced
speed
Output shaft: Clockwise rotation -
-
-
-
-
Gear C1 C2 C3 B1 B2 B3 F1 F2
3 ● ● ●
Page 565 of 796
01-14
▶4th Gear (1.000)
Torque converter lockup clutch
Engine speed
Planetary gear set 16.
A.
B. Stator
Center planetary gear set
Impeller L.
M.
P.Turbine wheel
Front planetary gear
set T.
V.
Input shaft: Clockwise rotation
Front ring gear: Clockwise rotation
Center ring gear and rear planetary gear carrier: Clockwise rotation
Front sun gear and planetary gear carrier: Clockwise rotation (direct connection)
Rear ring gear: Clockwise rotation
Rear sun gear: Rotation by ring gear and planetary gear carrier (direct connection)
Center ring gear: Clockwise rotation by C3 activation
Planetary gear carrier: Clockwise rotation by center sun gear and ring gear (direct
connection)
Output shaft: Clockwise rotation -
-
-
-
-
-
-
-
-
Gear C1 C2 C3 B1 B2 B3 F1 F2
4 ● ● ●
Page 566 of 796
01-153650-01
▶5th Gear (0.830)
Torque converter lockup clutch
Engine speed
Transmission, input shaft
1st gear ratio 16.
A.
B.
C.
D.2nd gear ratio
3rd gear ratio
Mounting elements
Rear planetary gear set
Stator E.
F.
H.
L.Center planetary gear set
Impeller
Turbine wheel
Front planetary gear set M.
P.
T.
V
Input shaft: Clockwise rotation
Front sun gear: Locked, Planetary gear carrier: Rotation with reduced speed
Rear planetary gear carrier: Clockwise rotation with reduced speed
Center ring gear and rear planetary gear carrier: Clockwise rotation by clutch C2 activation
Rear sun gear: Clockwise rotation because rear planetary gear carrier rotates faster than
rear ring gear (increased speed)
Center sun gear: Clockwise rotation with increased speed by C3 activation
Center planetary gear carrier: Clockwise rotation (increased speed)
Output shaft: Clockwise rotation (increased speed) -
-
-
-
-
-
-
-
Gear C1 C2 C3 B1 B2 B3 F1 F2
5 ● ● ● ●
3)
3) Overrun
Page 567 of 796
01-16
▶Reverse 1st Gear (3.167)
Torque converter lockup clutch
Engine speed
Transmission, input shaft
1st gear ratio
2nd gear ratio 16.
A.
B.
C.
D.Mounting elements
Mounting elements
Rear planetary gear set
Stator E.
F.
H.
L.Center planetary gear set
Impeller
Turbine wheel
Front planetary gear set M.
P.
T.
V.
Input shaft: Clockwise rotation
Front ring gear: Clockwise rotation
Front sun gear: Locked by one-way clutch F1
Front planetary gear carrier: Clockwise rotation (reduced speed)
Rear planetary gear ring gear: Clockwise rotation
Rear planetary gear carrier: Locked by B3
Rear sun gear and center sun gear: Counterclockwise rotation (increased speed)
Center ring gear: Locked by B3
Center planetary gear carrier: Counterclockwise rotation (reduced speed)
Output shaft: Counterclockwise rotation -
-
-
-
-
-
-
-
-
-
Gear C1 C2 C3 B1 B2 B3 F1 F2
R (S) ● ● ● ●
3)
3) Overrun
Page 568 of 796
01-173650-01
▶Reverse 2nd Gear (1.926)
Torque converter lockup clutch
Engine speed
Transmission, input shaft
1st gear ratio 16.
A.
B.
C.2nd gear ratio
Mounting elements
Rear planetary gear set
Stator D.
E.
H.
L.Center planetary gear set
Impeller
Turbine wheel
Front planetary gear set M.
P.
T.
V.
Input shaft: Clockwise rotation
Front ring gear: Clockwise rotation
Front planetary gear carrier: Clockwise rotation by clutch C1 activation (direct connection)
Rear ring gear: Clockwise rotation
Rear planetary gear carrier and center ring gear: Locked by brake B3
Rear sun gear and center sun gear: Counterclockwise rotation (increased speed)
Center planetary gear carrier: Counterclockwise rotation (reduced speed)
Output shaft: Counterclockwise rotation -
-
-
-
-
-
-
-
Gear C1 C2 C3 B1 B2 B3 F1 F2
R (W) ● ● ●