NISSAN ALMERA N15 1995 User Guide

MODEL34X69AND34X70 DESCRIPTION
Hydraulic ControlCircuit(Cont'd)
00 cancel
solenoid
Lock-up
control
valve

X :
Drain port
•

1-2
shift valve
Forward
clutch
accumulator
valve
High
clutch
Torque
converter
Oil
pump

i

=:= :
Orifice
Overrun
clutch
II

control
valve
4th
speed
cut
valve
SAT509H

AT-11

DESCRIPTION
Hydraulic ControlCircuit(Cont'd)
MODEL 34X80
1-2

shift
valve
1-2
accumulator

valve

~ 1

i i

xU

::l.

x

-

Detent valve

L-
_
-

cooler- Low

&
reverse
Torque brake
Oil converter Overrun ReverseForward

I
,clutch Highclutch Bandservo clutchclutch

pump
I
tJ
(Jp::-
(T,
tf1
--;::;-;r.]O~
~J
1~
g~ (~ ~~
l]
J~ ~

~iJ -
N
~%~
UL"-'
IU4~1~~

C-1
-!
~frEJ!
1

6 ~, -~

m
~,--J
0

- ILJ
,-O...J

r
ar

r::r=< I'---,
II .(
I'
IJ

,'-
~
,,'
(
-

I -

=-
~tL ',
~H

I~

~ ~M~ ·

F=
f='l .,.11
1-
~I" ~

" ~r'
I
L...---...l
reducing_

L
2-3 .4-2
I
~valve= ~
shift ~seq!!.enc~
~ -valve ,-=-valve---j
h
1J;;;.Q"t....

=--=-.J
II
Ma~alve
lJl.
"~'L--.J

:;;; ~I 11
p
URNb'21
nn

=-.--'
I~
II
'i-V
D

I I -,

." c:
I
Throttle
':fj'~1 .

modifier

If.'

valve .

II
I
1"
";'Jnn!
l...,

:=~-' \~

Throttle valve ~Klckdown
modifier
valve
X
:Drain port
:::::: :Orifice
Pressure
regulator
valve
!lJF

D

00 cancel
I
~Y&

solenoid •
Pressure
modifier valve
Lock-up_
control
valve

4th

speed cut
valve
Overrun
clutch
control-
valve

-=~
I
r

rr=-
LL:
J~

L~

Torque
x'"~

converter
i
i

relief '
valve
2~ '-

3-4 shift valv~-HiliJI
Governor../l ..-
valve

SAT1971

AT-12

MODEL34X81
4th speed
cut valve
Lock-up
control valve
Overrun
clutch
control valve
3-4 shift valve
X Drainport

:::::= :
Orifice Oil
pump Torque
converter DESCRIPTION
Hydraulic ControlCircuit(Cont'd)
High clutch
AT-13 1-2
shift valve
SAT1981
•

DESCRIPTION
Shift Mechanism
CONSTRUCTION

18

,:-1
SAT214H

ill
Torque converter

@
Oilpump

@
Input shaft

@
Brake band

@
Reverse clutch

@
High clutch

o
Front sungear

@
Front pinion gear
@

Front internal gear

@l
Front planetary carrier

@
Rear sungear

@
Rear pinion gear

@
Rear internal gear

@
Rear planetary carrier

@
Forward clutch

@
Forward one-way clutch
@

Overrun clutch

@
Lowone-way clutch

@
Low
&
reverse brake

@
Parking pawl

@
Parking gear

@
Output shaft

@
Idlegear

@
Output gear

FUNCTION OFCLUTCH ANDBRAKE

Glutch andbrake components Abbr. Function
Reverse clutch
RIG
To
transmit inputpower tofront sungear
High clutch
HIG
To
transmit inputpower tofront planetary carrier
Forward clutch
FIG
To
connect frontplanetary carrierwithforward one-way clutch
Overrun clutch
OIG
To
connect frontplanetary carrierwithrearinternal gear
Brake band BIBTo
lock front sungear
Forward one-way clutch
F/O.G
When
forward clutchisengaged, tostop rearinternai gearfrom rotat-
ing inopposite direction againstenginespeed
Low one-way clutch LlO.GTo
stop front planetary carrierfromrotating inopposite direction
against enginespeed
Low
&
reverse brake L
&
RIB To
lock front planetary carrier

AT-14

DESCRIPTION
Shift Mechanism (Cont'd)
OPERATION OFCLUTCH ANDBRAKE

Bandservo
ForwardLow
Low
&

Shift posi- Reverse
HighForward
Overrun
Lock-upRemarks
tion clutch clutchclutchclutch 2nd
3rd4thone-way
one-way reverse
apply release
applyclutch
clutch brake
P PARK
POSITION
0 0REVERSE
POSI-
R TION
N NEUTRAL
POSI-
TION
1st 0'10

••

D 2nd
0'10
0

•
Automatic
shift
'4 00'10
'2@
@

•
1<-->2<-->3<-->4
3rd
4th 0@ '3@
@0
0
1st 00

••
Automatic
shift
2 1<-->2
2nd 00 0

•

1st 00

•
•
0
Locks
(heldsta-
1 tionary)
in1st
2nd 00 0

•
speed
1
<--
2
'1 Operates whenoverdrive switchissel to"OFF".
'2 Oilpressure isapplied toboth 2nd"apply" sideand3rd"release" sideofband servo piston. However, brakebanddoes notcontract
because oilpressure areaonthe "release" sideisgreater thanthatonthe "apply" side.
'3 Oilpressure isapplied to4th "apply" sideincondition '2above, andbrake bandcontracts.

'4 AIT
will notshift to4th when overdrive switchisset to"OFF" position.

o
Operates.
• Operates. During"progressive" acceleration.
@ Operates butdoes notaffect power transmission.

Control System
CONTROL SYSTEM

Engine
AIT
•

Lock-up cancel
solenoid'1
Overdrive
control switch
1:1

Governor valve

I
11
1

I

1
1

OD cancel solenoid :

; I

L
J
AT-15
'1:
Equipped onmodel
34X69, 34X70and34X80
: Electrical signal
.... :Hydraulic pressure

SAT985HA

NOTE DESCRIPTION
AT-16

Fluidleakage TROUBLE
DIAGNOSES
Preliminary Check(PriortoRoad Testing)
AIT FLUID CHECK
Fluid leakage check

1. Clean areasuspected ofleaking, -for example, mating
surface ofconverter housingandtransmission case.
2. Start engine, applyfootbrake, placeselector leverin"0"
position andwait afew minutes.
3. Stop engine.
4. Check forfresh leakage.

SAT288G
Fluidcondition check
Fluid levelcheck -Refer toMA section (CHASSIS AND
BODY MAINTENANCE).
Fluid
color
Oark orblack withburned odor
Milky pink
Varnished fluid,lighttodark brown
and tacky Suspected
problem
Wear offrictional material
Water contamination
- Road water entering through
filler tubeorbreather
Oxidation
- Over orunder filling
- Overheating

•

Road Testing

Perform roadtests using "Symptom" chart.Refertopage

AT-20.

"P"
POSITION

1. Place selector leverin"P" position andstart engine. Stop
engine andrepeat theprocedure inall positions, including
neutral position.
2. Stop vehicle onaslight upgrade andplace selector leverin
"P" position. Releaseparkingbraketomake surevehicle
remains locked.

"R"
POSITION

1. Manually moveselector leverfrom"P"to"R", andnote
shift quality.
2. Drive vehicle inreverse longenough todetect slippage or
other abnormalities.

"N"
POSITION

1. Manually moveselector leverfrom"R"and"0"to"N" and
note shift quality.
2. Release parkingbrakewithselector leverin"N" position.
Lightly depress accelerator pedaltomake surevehicle
does notmove. (When vehicle isnew orsoon afterclutches
have been replaced, vehiclemaymove slightly. Thisisnot
a problem.)

AT-17

SAT497GTROUBLE
DIAGNOSES
Road Testing (Cont'd)

"0"
POSITION

1. Manually moveselector leverfrom"N"to"D" position, and
note shiftquality.
2. Using theshift schedule asareference, drivevehicle in"D"
position. Record,onsymptom chart,respective vehicle
speeds atwhich up-shifting anddown-shifting occur.These
speeds aretobe read atthree different throttlepositions
(light, halfandfull), respectively. Alsodetermine thetiming
at which shocks areencountered duringshifting andwhich
clutches areengaged.

SAT612GA
3.Determine whetherlock-upproperly occurswhiledriving
vehicle inproper gearposition andatproper vehicle speed.
4. Check todetermine ifshifting tooverdrive gearcannot be
made whileODcontrol switchis"OFF".
5. Drive vehicle in"D
3"
position athalf tolight throttle posi-
tion. Keep driving at60 to70 km/h (34to43 MPH). FUlly
depress accelerator pedaltomake suretransaxle down-
shifts from3rdto2nd gear.
6. Drive vehicle in"D
2"
position athalf tolight throttle posi-
tion. Keep driving at25 to35 km/h (16to22 MPH). Fully
depress accelerator pedaltomake suretransaxle down-
shifts from2ndto1st gear.

"2"
POSITION

1. Shift to"2" position andmake surevehicle startsin1st
gear.
2. Increase vehiclespeedtomake suretransaxle upshiftsfrom
1st to2nd gear.
3. Further increase vehiclespeed.Makesuretransaxle does
not upshift to3rd gear.
4. Drive vehicle in"2
2"
position athalf tolight throttle position.
Keep driving at25 to35 km/h (16to22 MPH). Fullydepress
accelerator pedaltomake suretransaxle downshifts from
2nd to1st gear.
5. Allow vehicle torun idle while in"2" position tomake sure
that transaxle downshifts to1st gear.
6. Move selector leverto"D" position andallow vehicle to
operate at30 to40 km/h (19to25 MPH). Then,shiftto"2"
position tomake suretransaxle downshifts to2nd gear.

"1"
POSITION

1. Place selector leverin"1" position andaccelerate vehicle.
Make suretransaxle doesnotshift from 1stto2nd gear
although vehiclespeedincreases.
2. Drive vehicle in"1" position. Releaseaccelerator pedalto
make surethatengine compression actsasabrake.
3. Place selector leverin"D" or"2" position andallow vehi-
cle torun at15 to25 km/h (9to 16 MPH). Thenmove selec-
tor lever to"1" position tomake suretransaxle downshifts
to 1st gear.

AT-18

TROUBLEDIAGNOSES
Road Testing (Cont'd)
SHIFT SCHEDULE

Drive thevehicle forapprox. 10minutes. Measuretheoiltem-
perature. Whentheoiltemperature becomesbetween50and
80°C (122and176°F), carryoutthis check.

VEHICLE SPEEDWHENSHIFTING GEARS

Model 34X68

Throttle posi- Vehicle
speedkm/h(MPH)
tion
0,~O
2
O
2
->
0
3
0
3
->
0
4
0
4
~
0
3

0
3
->
O
2

O
2
->
0,
1
2
~
1,

Full throttle
48
-56 88
-96 133
-141
80-88 37-45 45-53
(30 -35) (55-60)
-

(83-88)
(50-55) (23-28) (28
-33)

Half throttle
31
-39 54
-62 102-110
75-83 44
-52
7-15 45
-53
(19 -24) (34
-39)
(63-68) (47
-52)
(27-32) (4
-9)
(28-33)
Model 34X69and34X70

Throttle pas
i-
Vehicle
speedkm/h(MPH)
tion
0,~O
2
O
2~
0
3
0
3
->
0
4
0
4~
0
3
0
3
->
O
2
O
2~
0,
1
2~
1,

Full throttle
51
-60 94
-102 136-144
85-93 40
-48
48-56
(32 -37) (58-63)
-

(85-89)
(53-58) (25
-30) (30-35)

Half throttle
30
-38 52
-60 97-105 67-75 42-50 8-16
48-56
(19 -24) (32-37) (60-65) (42-47) (26-31) (5-10) (30-35)

Model 34X80

Throttle posi- Vehicle
speedkm/h(MPH)
tion
0,~O
2
O
2

->
0
3
0
3~
0
4
0
4
->
0
3
0
3
~
O
2

O
2
->
0,

1"
->
1,

Full throttle
52
-60 100-108 145
-153
90-98 40
-48 49-57
(32 -37) (62-67)
-

(90-95) (56-61) (25-30) (30
-35)

Half throttle
30
-38 53-61 103
-111
69-77 42
-50 8-16 49-57
(19 -24) (33-38) (64-69) (43-48) (26-31) (5-10) (30-35)

Model 34X81

Throttle posi- Vehicle
speedkm/h(MPH)
tion
0,~O
2
O
2
->
0
3
0
3
~
0
4
0
4
->
0
3

0
3
->
O
2
O
2
~
0,
1
2~
1,

Full throttle
58
-66 107
-115 160
-168
96-104 39
-47 48-56
(36 -41) (66
-71)
-

(99-104) (60-65) (24
-29) (30
-35)
33 -41 57-65 105
-113 69-77 45-53 8-16 48-56

Half throttle

(21-25) (35-40)
(65-70) (43
-48) (28-33) (5-10) (30
-35)
AT-19
•

TROUBLEDIAGNOSES
Road Testing (Cont'd)
ROAD TESTSYMPTOM CHART
~
ON
VEHICLE

~
Numbers arearranged inorder ofprobability.
Perform inspections startingwithnumber one
and work up.
Circled numbers indicatethatthetransaxle
Q)Q)
must beremoved fromthevehicle.
>
>

Ol

Iii Iii

c:

>
Q)
~
.;:

>>

Q)

';:
C

Iii

e
>

: Valve expected tobe malfunctioning

Iii
2
>
Iii

"lJ "lJ

C
>

::l

c:Q) Q)
~

0"
ro
Q)

"lJ

B
0

~

0-

od
ro
<.l

'0
~

(/)

"3
~
Q)
.l:l

Ol
~Q)Q)
Q)

Ol
Q)
Q)Q)

.l:l
"lJ
"lJ
~
>
>
> >
0

c:
:0
;:
c:

::l
>

Iii
>

~
Iii IiiIii
.2

E

ro ro
(/)

;:
~
(/)

Iii
co

>> >
u

<.l
(/)

>>
>

~ ~

Q)
s
Q)
~ Q)

;:
;;:
c:

>
e
E
Q)

0-
e
E
::l

~
.c
e
::l

2
:0 c:

(/)

(/)

c
e
'0,

Q)
c
e
(/)

(/)
(/)

Q;
(/)

~ c:
~
M

C)'
Q)

0
0

~c:

0

~
>

0:

0
.E

I-
W

:::i
0
l-
N
0

Sharp shocks inshifting from"N"to"D" position
2
53

4
7

When shifting from1stto2nd or
24
3
6

2nd to3rd
When shifting from3rdto4th
24
3
5

When shifting fromDto 2and 1
Shift shocks
position.
When ODswitch isset from 2
43
5

"ON" to"OFF"
When shifting from2ndto1st in
24
3
5

"1" position
When shifting from1stto2nd
24 3
5

Shift slippage whenupshifting
Whenshifting from2ndto3rd
24
3
6

When shifting from3rdto4th
24 3
5

When shifting from4thto2nd
2
5
3
6

Shift slippage withaccelerator
Whenshifting from4thto3rd
24
3
6

pedal depressed
Whenshifting from4thto1st
and shifting from3rdto1st 2

5
3

6

When vehicle starts
243

6

Poor power/acceleration
Whenupshifting
24
3
7

When shifting from"D"to"2"
24
3
5

and" 1"position
No engine braking When
ODswitch isset from
24
3
7

"ON" to"OFF"
When shifting from2ndto1st in

2
4
3
5

"1" position
Too Iowa gearchange point
from 2ndto3rd and from 3rdto
32

6

2nd.
Too high agear change point
from 2ndto3rd and from 3rdto
32
6

Shift quality
2nd.
Too Iowa gearchange point

3
2

6

from 2ndto1st in"1" position.
Too high agear change point

3
2

6

from 2ndto1st in"1" position.

AT-20