1995 NISSAN ALMERA N15 Service Manual

JUDGEMENT OFSTALL TEST

Selector leverposition
TROUBLE
DIAGNOSES
Stall Tasting (Cont'd)

Judgement
D

2

R

Damaged components
Forward one-way
cluth
Hydraulic circuitfor
line pressure control
(Line pressure islow.)
D

2

R

Selector leverposition H

H

H

o

H

H

H
H
o
o
o

H

o
o
o
o

Judgement

AT-25
L

L

L

L
o
:
Stall
revolution
isnormal.
H :Stall revolution ishigher
than specified.
L :Stall revolution islower
than specified.
Engine
Torque converter
one-way clutch
Reverse clutch
Low one-way clutch
Clutches andbrakes except
high clutch, brakebandand
overrun clutchareOK.
(Condition ofhigh clutch,
brake bandandoverrun
clutch cannot beconfirmed by
stall test.)

SAT871H
•

TROUBLEDIAGNOSES

Pressure Testing
• Location ofpressure testport.
• Always replace pressure plugsasthey areself-sealing
bolts.

Test portfor
line pressure governor
pressure

SAT565D
LINEPRESSURE TESTPROCEDURE

1. Check AfTand engine fluidlevels. Ifnecessary, addfluid.
2. Drive vehicle forabout 10minutes untilengine oiland ATF
reach operating temperature.
ATF operating temperature:
50 -80°C (122-176°F)

SAT647B
3.Install pressure gaugetoline pressure port.
4. Set parking brakeandblock wheels.
Continue todepress brakepedalfullywhile performing line
pressure testatstall speed.

SAT513G
5.Start engine andmeasure linepressure atidle and stall
speed. Line pressure:
Refer toSOS, AT-166.

JUDGEMENT OFLINE PRESSURE TEST

• Ifline pressure doesnotrise, firstcheck tomake surethat
throttle wireisconnected properly.
1) When linepressure whileidling
is
low atall positions ("D",
"2", "1", "R"and"P"), theproblem maybedue to:

SAT494G •
Wear oninterior ofoil pump

AT-26

'-)
(

~)o

Front

SAT498GTROUBLE
DIAGNOSES
Pressure Testing(Cont'd)

• Oilleakage ator around oilpump, control valvebody, trans-
mission caseorgovernor
• Sticking pressure regulator valve
• Sticking pressure modifiervalve
2) When linepressure whileidling islow ataparticular
position, checkthefollowing.
• Ifoil leaks ator around low
&
reverse brakecircuit, line
pressure becomes lowin"R" position. Butline pressure is
normal in"P", "D", "2"or"1" position.
3) When linepressure ishigh while idling, pressure regulator
valve mayhave stuck.

GOVERNOR PRESSURETESTING

1. Check
AIT
and engine fluidlevels. Ifnecessary, addfluid.
2 .. Drive vehicle forabout 10minutes untilengine oiland ATF
reach operating temperature.

ATF operating temperature:
50 -80°C (122-176°F)

3. Install pressure gaugetogovernor pressureport.
4. Set parking brakeandblock rearwheels.
5. Jack upfront wheels.
6. Set selector leverinDposition anddrive vehicle.

Be careful ofrotating wheels.
•

Governor pressure:
• Governor pressureisnot generated whenvehicle is
stopped. (frontwheels arenotrotating.)
• Governor pressurerisesgradually inresponse tovehicle
speed. (frontwheel rotating speed.)

If not, check governor valveassembly. RefertoAT-36.

AT-27

TROUBLEDIAGNOSES
Wiring Diagram -AT -

AT-A/T-01

page
Israel
Y ~Next page
A!T CONTROL
VAL VE
(E223) :
@

TORQUE
CONVERTER
CLUTCH
SOLENOID
VALVE
LHD
models
RHO models
For Europe and
Except@
GA engine
SR engine

(b):

:

@:

@:
@:
@:

Refer
toEL-POWER.
FUSE
BLOCK (J!B)

([@

(El06)

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y ~.~ y
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Y ~(E202)

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C~INATION

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2•6
1

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SOLENOID OR!BP!B
OR!B VALVE

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OVERDRIVE (E?6)
(E203)
0--1

CONTROL
L

OFF SWITCH
~ PIB-@>Next

ON

~
B

L
JOINT
CONNECTOR-1

~

B
~==~
B

r---------------------------------,
~(E224)

~GY

L ~
Refer
tolast page
(Foldout page).

CHID
(EtOn

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(El06)

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HAT001
AT-28