Page 4449 of 6020

TRANSMISSION CONTROL SYSTEM (JR405E) 7A2-165
First Gear In D, 3, 2 Range
Legend1. Input shaft
2. Front planetary carrier
3. Front pinion gear
4. Front sun gear
5. Rear sun gear
6. Rear pinion gear
7. Rear internal gear
8. Output shaft
9. Reverse clutch 10. 2-4 brake
11. High clutch
12. Front internal gear
13. Rear planetary carrier
14. Low clutch
15. Low & reverse brake
16. Low one-way clutch
17. Parking pawl
The driving force from the input shaft (1) is transmitted
to the rear sun gear (5) and reverse & high clutch drum.
As the low clutch (14) is engaged, the movement of the
rear internal gear (7) is restricted. Since the low one-
way clutch (16) acts at the same time,
counterclockwise rotations of the rear internal gear (7)
are locked. As a result, the driving force transmitted to
the rear sun gear (5) rotates the rear planetary carrier
(13) clockwise, then the rotation speed is decreased
and multiple forces is transmitted to the output shaft (8). When decelerating, the rotating speed of the rear
planetary carrier (13) (rear pinion gear [6]) is higher
than that of the rear sun gear (5) and the rear internal
gear (7) attempts to rotate clockwise. At this time, the
low one-way clutch (16) does not act but races, and
therefore the rear internal gear (7) rotates clockwise.
The reverse torque from the driving shaft is not
transmitted to the engine side and the engine brake
does not act.
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7A2-166 TRANSMISSION CONTROL SYSTEM (JR405E)
First Gear In L Range
Legend1. Input shaft
2. Front planetary carrier
3. Front pinion gear
4. Front sun gear
5. Rear sun gear
6. Rear pinion gear
7. Rear internal gear
8. Output shaft
9. Reverse clutch 10. 2-4 brake
11 . H i g h c l u t c h
12. Front internal gear
13. Rear planetary carrier
14. Low clutch
15. Low & reverse brake
16. Low one-way clutch
17. Parking pawl
The basic mechanism is the same as in the D, 3, and 2
ranges. To apply the engine brake, the low & reverse
brake (15) is engaged to restrict the movement of the
low one-way clutch (16).
When decelerating, as the rear internal gear (7) is
fixed, reverse torque from the propeller shaft is
transmitted to the engine side so that the engine brake
is applied.
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TRANSMISSION CONTROL SYSTEM (JR405E) 7A2-167
Second Gear
Legend1. Input shaft
2. Front planetary carrier
3. Front pinion gear
4. Front sun gear
5. Rear sun gear
6. Rear pinion gear
7. Rear internal gear
8. Output shaft
9. Reverse clutch 10. 2-4 brake
11. High clutch
12. Front internal gear
13. Rear planetary carrier
14. Low clutch
15. Low & reverse brake
16. Low one-way clutch
17. Parking pawl
The driving force from the input shaft (1) is transmitted
to the rear sun gear (5) and reverse & high clutch drum.
As in the case of the 1st gear, the low clutch (14) is
engaged and the movement of the rear internal gear (7)
is restricted. Since the 2-4 brake is engaged (10), the
front sun gear (4) is fixed. As a result, movement of the
rear internal gear (7) is restricted, and the driving force
transmitted to the rear sun gear (5) rotates the rear
planetary carrier (13) clockwise. The rotating speed of
the rear planetary carrier (13) is higher than in 1st gear as the rear internal gear (7) rotates. When decelerating,
the engine brake is applied.
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7A2-168 TRANSMISSION CONTROL SYSTEM (JR405E)
Third Gear
Legend1. Input shaft
2. Front planetary carrier
3. Front pinion gear
4. Front sun gear
5. Rear sun gear
6. Rear pinion gear
7. Rear internal gear
8. Output shaft
9. Reverse clutch 10. 2-4 brake
11 . H i g h c l u t c h
12. Front internal gear
13. Rear planetary carrier
14. Low clutch
15. Low & reverse brake
16. Low one-way clutch
17. Parking pawl
The driving force from the input shaft (1) is transmitted
to the rear sun gear (5) and reverse & high clutch drum.
As in the case of the 1st gear and 2nd gear, the low
clutch (14) is engaged and the movement of the rear
internal gear (7) is restricted. Since the high clutch (11)
is engaged, the driving force from the input shaft (1) is
directly transmitted to the rear internal gear (7). As a
result, the speed of the rear sun gear (5) and the rear
internal gear (7) becomes the same as that of the input
shaft (1), so that the rear pinion gear rotates (6) not independently but together with the rear sun gear (5)
and rear internal gear (7). When decelerating, the
engine brake is applied.
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TRANSMISSION CONTROL SYSTEM (JR405E) 7A2-169
Fourth Gear
Legend1. Input shaft
2. Front planetary carrier
3. Front pinion gear
4. Front sun gear
5. Rear sun gear
6. Rear pinion gear
7. Rear internal gear
8. Output shaft
9. Reverse clutch 10. 2-4 brake
11. High clutch
12. Front internal gear
13. Rear planetary carrier
14. Low clutch
15. Low & reverse brake
16. Low one-way clutch
17. Parking pawl
The driving force from the input shaft (1) is transmitted
to the rear sun gear (5) and reverse & high clutch drum.
Since the 2-4 brake (10) is engaged, the front sun gear
(4) is fixed. In addition to this the high clutch (11) is
engaged. As a result, the front pinion gear (6) rotates
itself together with other gears clockwise. This rotation
increases the speed of rotation of the front internal gear
(12) and is transmitted to the output shaft (8).
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7A2-170 TRANSMISSION CONTROL SYSTEM (JR405E)
Special Tools and Equipment
Special Tools and Equipment
Illustration Tool Number / Description
5-8840-2835-0 (J-35616-C)Connector Test Adapter Kit
(With Test Lamp)
5-8840-0285-0 (J-39200) Digital Multimeter
Te c h 2 K i t
5884028350
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Page 4455 of 6020

ON-VEHICLE SERVICE (JR405E) 7A3-1
SECTION 7A3
ON-VEHICLE SERVICE (JR405E)
TABLE OF CONTENTS
PAGE
Description ................................................................................................................... ... 7A3 – 2
Automatic Transmission Fluid (ATF) ............................................................................ 7A3 – 2
ATF Level ..................................................................................................................... .... 7A3 – 2
ATF Change .................................................................................................................... . 7A3 – 3
Transmission Control Module (TCM) ............................................................................ 7A3 – 5
Inhibitor Switch .............................................................................................................. . 7A3 – 6
Speed Sensor .................................................................................................................. 7A3 – 8
Turbine Sensor ............................................................................................................... 7A3 – 9
Power and 3rd Start Switch ........................................................................................... 7A3 – 9
Select Lever .................................................................................................................. ... 7A3 –10
Shift Cable ................................................................................................................... .... 7A3 –13
Solenoids, Oil Pressure Switch and Oil Temperature Sensor .................................... 7A3 –16
Control Valve Assembly ................................................................................................. 7A3 –1 8
Flushing the Transmission Fluid Cooler and Line ...................................................... 7A3 –19
Transmission Assembly ................................................................................................. 7A3 –20
Special Service Tool ....................................................................................................... 7A 3 –23
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7A3-2 ON-VEHICLE SERVICE (JR405E)
DESCRIPTION
Before performing on-vehicle service on the automatic
transmission, check that the engine idling speed and
general engine condition are normal.
For shift interlock function, if the ignition key is out of
“LOCK” position, the shift lever select button can not be
pushed. (shift lever can not be operated.)
RTW 77ASH000901
AUTOMATIC TRANSMISSION FLUID (ATF)
Inspect
Remove the transmission dipstick to check the condition
of the ATF.
Check the color and smell of the ATF.
If the ATF is abnormal color or smells burnt, replace it
and investigate the cause of trouble.
Coloor of ATF Condition Clear red Normality
Blackish discoloration Defects of power train
parts (clutches)
W hite turbidity Include water
Discoloration of red brown Deterioration of ATF
ATF LEVEL
Inspect
Hot Level
1. W arm up the engine and the transmission by driving
the vehicle on the road so that the temperature
reaches around 80 °C (176 °F).
Do not turn the engine off.
2. Park the vehicle on a level surface.
3. Apply the parking brake firmly.
4. Let the engine run at idle.
Move the select lever slowly through all the gea
r
positions.
Stop in each gear position just long enough for the transmission to engage.
5. Return the select lever to either “P” or “N”.
6. Remove the ATF level dipstick.
7. W ipe the dipstick clean with a paper towel.
8. Reinsert the dipstick and wait several seconds.
9. Remove the dipstick.
The ATF level should be inside the “H” range on the dipstick.
242R300001
If the ATF level is below the “H” range, ATF must be added.
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