Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 303
5A-3 Automatic Transmission/Transaxle:
General Description
Automatic Transmission Description
S6JB0A5101001
This automatic transmission is a full automatic type with 3-speed plus overdrive (O/D).
The torque converter is a 3-element, 1-step and 2-phase type and is equipped with an electronically controlled lock-up
mechanism. The gear shift device consists of 3 sets of planetary gear units,3 disc type clutches, 4 disc type brakes
and 3 one-way clutches. The gear shift is done by selecting one of 7 positions (“P”, “R”, “N”, “D”, “3”, “2” and “L”) by
means of the select lever installed on the floor. Also, by using the P/N mode switch located on the console box, it is
possible to select the gear change timing of 2 modes, normal and power.
1
13
14
16
15
19
17
18
20
2
3
4
5
6
7
8
9
10
11
12
I5JB0A510004-01
1. Torque converter clutch (TCC)
8. Second coast brake
15. O/D one-way clutch
2. Torque converter
9. Second brake
16. Forward clutch input shaft
3. O/D clutch
10. Reverse brake
17. One-way clutch No.1
4. O/D brake
11. Front planetary gear
18. One-way clutch No.2
5. O/D planetary gear
12. Rear planetary gear
19. Intermediate shaft
6. Forward clutch
13. O/D input shaft
20. Output shaft
7. Direct clutch
14. Oil pump
Automatic Transmission/Transaxle: 5A-4
Item
Specifications
Torque
converter
Type
3-element, 1-step, 2-phase type (with TCC (lock-up) mechanism)
Stall torque ratio
2.05
Oil pump
Type
Trochoid type oil pump
Drive system
Engine driven
Gear
change
device
Type
Forward 4-step, reverse 1-step planetary gear type
Shift position
“P” range
Gear in neutral, output shaft fixed, engine start
“R” range
Reverse
“N” range
Gear in neutral, engine start
“D” range
Forward 1st
↔ 2nd ↔ 3rd ↔ 4th (O/D)
automatic gear change
“D” range (Transfer 4L
(4WD model only))
Forward 1st
↔ 2nd ↔ 3rd gear change
“3” range
Forward 1st
↔ 2nd ↔ 3rd automatic gear
change
“2” range (Normal
mode)
Forward 1st
↔ 2nd ← 3rd automatic gear
change
“2” range (Power mode) Forward 2nd
← 3rd automatic gear change
“L” range
Forward 1st
← 2nd reduction, and fixed at 1st
gear
Gear ratio
1st
2.826
2nd
1.493
3rd
1.000
4th
0.688
Reverse
2.703
Control elements
Wet type multi-disc clutch ... 3 sets
Wet type multi-disc brake ... 4 sets
One-way clutch ... 3 sets
Transfer (4WD model only)
Hi: 1.000
Lo: 1.970
Final gear reduction ratio
5.125
Lubrication Lubrication system
Forced feed system by oil pump
Cooling
Cooling system
Radiator assisted cooling (water-cooled)
Fluid used
SUZUKI ATF 3317 or Mobil ATF 3309
5A-5 Automatic Transmission/Transaxle:
Clutch / Brake Functions of Automatic Transmission
S6JB0A5101002
I5JB0A510005-01
1. Overdrive clutch
5. Second coast brake
9. One-way clutch No.1
13. Intermediate shaft
2. Overdrive brake
6. Second brake
10. Overdrive one-way clutch
3. Forward clutch
7. Reverse brake
11. Overdrive input shaft
4. Direct clutch
8. One-way clutch No.2
12. Forward clutch input shaft
Part Name
Function
Overdrive clutch
Meshes overdrive carrier and overdrive sun gear.
Overdrive brake
Fixes overdrive sun gear.
Overdrive one-way clutch
Meshes overdrive carrier and overdrive sun gear only when driven by engine.
Forward clutch
Meshes input shaft and intermediate shaft.
Direct clutch
Meshes input shaft with front sun gear and rear sun gear.
Second coast brake
Fixes front sun gear and rear sun gear.
Second brake
Fixes outer race of one-way clutch No.1, to prevent front sun gear and rear sun gear
from turning counterclockwise (reverse direction of engine input rotation direction).
Reverse brake
Fixes front planetary carrier.
One-way clutch No.1
Prevents front sun gear and rear sun gear from turning counterclockwise only when
second brake is at work.
One-way clutch No.2
Prevents front planetary — carrier from turning counterclockwise.
Automatic Transmission/Transaxle: 5A-6
Table of A/T System Component Operation
S6JB0A5101003
Solenoid
valve
No. 1–A
Solenoid
valve
No. 1–B
O/D
clutch
Forward
clutch
Direct clutch
O/D brake
Inner
piston
Outer
piston
P
{
X
{
—
—
—
—
R (V
≤ 7 km/h)
{
X
{
—
{
{
—
R (V> 7 km/h)
X
{
{
—
—
—
—
N
—
—
{
—
—
—
—
D
1st gear
{
X
{
{
—
—
—
2nd gear
{
{
{
{
—
—
—
3rd gear
X
{
{
{
—
{
—
O/D
X
X
—
{
—
{
{
2
1st gear
{
X
{
{
—
—
—
2nd gear
{
{
{
{
—
—
—
3rd gear
X
{
{
{
—
{
—
L
1st gear
{
X
{
{
—
—
—
2nd gear
{
{
{
{
—
—
—
{
: ON, X: OFF
Second
coast brake
Second
brake
Reverse brake
O/D
one-way
clutch
One-way
clutch
No. 1
One-way
clutch
No. 2
Inner
piston
Outer
piston
P
—
—
—
—
{
—
—
R (V
≤ 7 km/h)
—
—
{
{
{
—
—
R (V> 7 km/h)
—
—
—
—
—
—
{
N
—
—
—
—
{
—
—
D
1st gear
—
—
—
—
{
—
{
2nd gear
—
{
—
—
{
{
—
3rd gear
—
{
—
—
{
—
—
O/D
—
{
—
—
—
—
—
2
1st gear
—
—
—
—
{
—
{
2nd gear
{
{
—
—
{
—
—
3rd gear (Fail safe)
—
{
—
—
{
—
—
L
1st gear
—
—
{
{
{
—
—
2nd gear (Fail safe)
{
{
—
—
{
—
—
{
: ON, X: OFF
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