AUTOMATIC TRANSMISSION(4AT) > General Description
|
Model |
1.5 L DOHC |
2.0 L DOHC |
|
Type |
Symmetric, 3 element, single stage, 2 phase torque converter | |
|
Stall torque ratio |
2.2 — 2.4 |
2.0 — 2.2 |
|
Nominal diameter |
236 mm (9.29 in) | |
|
Stall speed (at sea level) |
2,300 — 2,800 rpm |
2,100 — 2,600 rpm |
|
One-way clutch |
Sprague type one-way clutch | |
|
Type |
Parachoid constant-displacement pump | |
|
Driving method |
Driven by engine | |
|
Number of teeth |
Inner rotor |
9 |
|
Outer rotor |
10 | |
3. TRANSMISSION CONTROL ELEMENT
|
Type |
4-forward, 1-reverse, double-row planetary gears |
|
Multi-plate clutch |
3 sets |
|
Multi-plate brake |
2 sets |
|
One-way clutch (sprague type) |
1 sets |
|
Gear ratio | |
|
1st |
2.785 |
|
2nd |
1.545 |
|
3rd |
1.000 |
|
4th |
0.694 |
|
Rev |
2.272 |
|
Model |
1.5 L DOHC |
2.0 L DOHC |
|
Number of front sun gear teeth |
33 | |
|
Number of front pinion teeth |
21 | |
|
Number of front internal gear teeth |
75 | |
|
Number of rear sun gear teeth |
42 | |
|
Number of rear pinion teeth |
17 | |
|
Number of rear internal gear teeth |
75 | |
|
Number of high clutch drive plates |
3 |
4 |
|
Number of low clutch drive plates |
4 |
5 |
|
Number of reverse clutch drive plates |
1 |
2 |
|
Number of drive plates for the 2-4 brake |
2 |
3 |
|
Number of drive plates for low & reverse brake |
4 | |
|
P (Park) |
Transmission is in neutral, output member is fixed, engine start is possible |
|
R (Reverse) |
Transmission is in reverse. |
|
N (Neutral) |
Transmission is in neutral and engine start is possible |
|
D (Drive) |
4-forward automatic gear change 1st ← → 2nd ← → 3rd ← → 4th |
|
SPORT mode |
4-forward automatic gear change 1st ← → 2nd ← → 3rd ← → 4th |
|
Manual mode (+) |
4-forward manual gear change (shift up) 1st → 2nd → 3rd → 4th |
|
Manual mode (−) |
4-forward manual gear change (shift down) 1st ← 2nd ← 3rd ← 4th |
|
Control method |
Wire cable type |
7. HYDRAULIC CONTROL AND LUBRICATION
|
Type |
Electronic hydraulic control [4 forward gear changes made by electronic signals of vehicle speed and accelerator (throttle) opening] | |
|
Fluid |
Recommended materials |
SUBARU ATF |
|
Alternative |
Idemitsu “ATF HP” CAUTION: Be sure to use the recommended or equivalent ATF. Using material except recommended one or substitute would cause trouble. If the recommended ATF or equivalents are difficult to obtain, it is possible to use DEXRON III as a temporary solution, but it is necessary to change to the specified ATF as soon as possible. | |
|
Fluid capacity L (US qt, Imp qt) |
1.5 L FWD model |
8.0 — 8.3 (8.5 — 8.8, 7.0 — 7.3) |
|
1.5 L AWD and 2.0 L models |
8.4 — 8.7 (8.9 — 9.2, 7.4 — 7.7) | |
|
Lubrication system |
Forced feed lubrication with oil pump | |
|
Oil |
Automatic transmission fluid (see above) | |
|
Cooling system |
ATF cooler (with warmer feature) Liquid-cooler incorporated in radiator |
|
Inhibitor switch |
12 poles |
|
Transmission harness |
20 poles |
|
Transfer type |
Multi-plate transfer (MP-T) |
|
Number of transfer clutch drives & driven plates |
4 |
|
Control method |
Electronic hydraulic type |
|
Lubricant |
Same automatic transmission fluid as used in the automatic transmission |
|
Reduction gear ratio of 1st gear |
1.000 (53/53) |
|
Model |
1.5 L DOHC |
2.0 L DOHC |
|
Front final reduction gear ratio |
4.444 (40/9) |
4.111 (37/9) |
|
Lubrication oil |
| ||||
|
(1) |
Item |
(3) |
API standard | ||
|
(2) |
Front differential gear oil |
(4) |
SAE viscosity No. and applicable temperature | ||
|
Front differential oil capacity L (US qt, Imp qt) |
1.1 — 1.3 (1.2 — 1.4, 1.0 — 1.1) | ||||