2004 NISSAN TERRANO engine

A/T Fluid Check
FLUID LEAKAGE CHECK
1. Clean area suspected of leaking. Ð for example, mating sur-face of converter housing and transmission case.
2. Start engine, apply foot brake, place selector lever in ªDº posi- tion and wait a few minutes.
3. Stop engine.
4. Check for fresh leakage.
FLUID CONDITION CHECK
Fluid color Suspected cause
Dark or black with burned odor Wear of frictional material
Milky pink Water contamination Ð Road water enter-
ing through filler tube or breather
Varnished fluid, light to dark
brown and tacky Oxidation Ð Over or under filling, Ð Over-
heating
FLUID LEVEL CHECK
Refer to MA section (ªChecking A/T Fluidº, ªCHASSIS AND BODY
MAINTENANCEº).
Stall Test
STALL TEST PROCEDURE
1. Check A/T and engine fluid levels. If necessary, add.
2. Drive vehicle for approx. 10 minutes or until engine oil and ATF
reach operating temperature.ATF operating temperature: 50 - 80ÉC (122 - 176ÉF)
3. Set parking brake and block wheels.
4. Install a tachometer where it can be seen by driver during test.
I It is good practice to put a mark on point of specified
engine rpm on indicator.
5. Start engine, apply foot brake, and place selector lever in ªDº position.
6. Accelerate to wide open throttle gradually while applying foot brake.
7. Quickly note the engine stall revolution and immediately release throttle.
I During test, never hold throttle wide open for more than 5
seconds.
Stall revolution: 2,450 - 2,700 rpm
SAT801A
SAT638A
SAT647B
SAT513G
SAT514G
TROUBLE DIAGNOSIS Ð Basic Inspection
AT-27
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8. Move selector lever to ªNº position.
9. Cool off ATF.
IRun engine at idle for at least one minute.
10. Repeat steps 5 through 9 with selector lever in ª2º, ª1º and ªRº positions.
JUDGEMENT OF STALL TEST
The test result and possible damaged components relating to each result are shown in the illustration.
In order to pinpoint the possible damaged components, follow the WORK FLOW as shown in AT-26.
Note
Stall revolution is too high in ªDº or ª2º position:
I Slippage occurs in 1st gear but not in 2nd and 3rd gears. ..... Low one-way clutch slippage
I Slippage occurs at the following gears:
1st through 3rd gears in ªDº position and engine brake functions.
1st and 2nd gears in ª2º position and engine brake functions with accelerator pedal released (fully closed
throttle). ..... Forward clutch or forward one-way clutch slippage
Stall revolution is too high in ªRº position:
I Engine brake does not function in ª1º position. ..... Low & reverse brake slippage
I Engine brake functions in ª1º position. ..... Reverse clutch slippage
Stall revolution within specifications:
I Vehicle does not achieve speed of more than 80 km/h (50 MPH). ..... One-way clutch seizure in torque
converter housing
CAUTION:
Be careful since automatic fluid temperature increases abnormally.
I Slippage occurs in 3rd and 4th gears in ªDº position. ..... High clutch slippage
I Slippage occurs in 2nd and 4th gears in ªDº position. ..... Brake band slippage
Stall revolution less than specifications:
I Poor acceleration during starts. ..... One-way clutch seizure in torque converter
SAT771B
TROUBLE DIAGNOSIS Ð Basic Inspection
Stall Test (Cont'd)
AT-28
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Line Pressure Test
LINE PRESSURE TEST PORTS
ILocation of line pressure test ports.
I Always replace line pressure plugs as they are self-
sealing bolts.
LINE PRESSURE TEST PROCEDURE
1. Check A/T and engine fluid levels. If necessary, add fluid.
2. Drive vehicle for approx. 10 minutes or until engine oil and ATF
reach operating temperature.ATF operating temperature: 50 - 80ÉC (122 - 176ÉF)
3. Install pressure gauge to corresponding line pressure port.
SAT209GA
SAT647B
SAT518GB
SAT519GA
TROUBLE DIAGNOSIS Ð Basic Inspection
AT-30
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4. Set parking brake and block wheels.
IContinue to depress brake pedal fully while line pressure
test is being performed at stall speed.
5. Start engine and measure line pressure at idle and stall speed.
I When measuring line pressure at stall speed, follow the
stall test procedure.
Line pressure: Refer to SDS, AT-201.
JUDGEMENT OF LINE PRESSURE TEST
Judgement Suspected parts
At idle Line pressure is low in all
positions.
I
Oil pump wear
I Control piston damage
I Pressure regulator valve or plug sticking
I Spring for pressure regulator valve damaged
I A/T fluid pressure leakage between oil strainer and pressure regulator valve
I Clogged strainer
Line pressure is low in par-
ticular position. I
Fluid pressure leakage between manual valve and particular clutch
I For example, line pressure is:
Ð Low in ªRº and ª1º positions,
Ð Normal in ªDº and ª2º positions.
Then, fluid leakage exists at or around low and reverse brake circuit.
Refer to ªCLUTCH AND BAND CHARTº, AT-11.
Line pressure is high. IMal-adjustment of throttle position sensor
I A/T fluid temperature sensor damaged
I Line pressure solenoid valve sticking
I Short circuit of line pressure solenoid valve circuit
I Pressure modifier valve sticking
I Pressure regulator valve or plug sticking
I Open in dropping resistor circuit
At stall speed Line pressure is low.
IMal-adjustment of throttle position sensor
I Line pressure solenoid valve sticking
I Short circuit of line pressure solenoid valve circuit
I Pressure regulator valve or plug sticking
I Pressure modifier valve sticking
I Pilot valve sticking
SAT513G
SAT493G
TROUBLE DIAGNOSIS Ð Basic Inspection
Line Pressure Test (Cont'd)
AT-31
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Road Test
DESCRIPTION
IThe purpose of the test is to determine overall performance of
A/T and analyze causes of malfunctions.
I The road test consists of the following three parts:
1. Check before engine is started
2. Check at idle
3. Cruise test
I Before road test, familiarize yourself with all test procedures
and items to check.
I Conduct tests on all items until specified symptom is found.
Troubleshoot items which check out No Good after road test.
Refer to ªON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONº
and ªDIAGNOSTIC PROCEDURES FOR SYMPTOMSº, AT-14
- AT-20 and AT-97 - AT-117.
SAT786A
SAT496G
TROUBLE DIAGNOSIS Ð Basic Inspection
AT-32
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1. CHECK BEFORE ENGINE IS STARTED
1. Park vehicle on flat surface.
2. Turn ignition switch to ªOFFº position.
1. Set A/T mode switch to ªAUTOº posi- tion.
2. Move selector lever to ªPº position.
3. Turn ignition switch to ªONº position. (Do not start engine.)
4. Does SPORT indicator lamp come on for about 2 seconds?
Ye s
ENo Go to 1. SPORT Indicator
Lamp Does Not Come On,
AT-97.
Does SPORT indicator lamp flicker for
about 8 seconds?
No
EYe sPerform self-diagnosis.
Refer to SELF-DIAGNO-
SIS PROCEDURE, AT-14.
1. Set A/T mode switch to ªSPORTº posi-
tion.
2. Does SPORT indicator lamp come on?
Ye s
ENo Go to 2. SPORT or SNOW
(*) Indicator Lamp Does
Not Come On, AT-100.
Set overdrive control switch to ªOFFº posi-
tion.
Does O/D OFF indicator lamp come on?
Ye s
ENoGo to 3. O/D OFF Indica-
tor Lamp Does Not Come
On, AT-100.
qA
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NAT309
SAT853E
NAT309
SAT857E
NAT232
H
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TROUBLE DIAGNOSIS Ð Basic Inspection
Road Test (Cont'd)
AT-33
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2. CHECK AT IDLE
1. Park vehicle on flat surface.
2. Turn ignition switch to ªOFFº position.
3. Move selector lever to ªPº or ªNº posi- tion.
4. Turn ignition switch to start position.
5. Is engine started?
Ye s
ENo Go to ª5. Engine Cannot
Be Started In ªPº and ªNº
Positionº, AT-102.
1. Turn ignition switch to ªOFFº position.
2. Move selector lever to ªDº, ª1º, ª2º or ªRº position.
3. Turn ignition switch to start position.
4. Is engine started?
No
EYe s Go to ª5. Engine Cannot
Be Started In ªPº and ªNº
Positionº, AT-102.
1. Turn ignition switch to ªOFFº position.
2. Move selector lever to ªPº position.
3. Release parking brake.
4. Push vehicle forward or backward.
5. Does vehicle move when it is pushed forward or backward?
No
EYe s Go to ª6. In ªPº Position,
Vehicle Moves Forward Or
Backward When Pushedº,
AT-117.
1. Apply parking brake.
2. Move selector lever to ªNº position.
3. Turn ignition switch to ªSTARTº position and start engine.
4. Release parking brake.
5. Does vehicle move forward or back- ward?
No
EYe s Go to ª7. In ªNº Position,
Vehicle Movesº, AT-103.
1. Apply foot brake.
2. Move selector lever to ªRº position.
3. Is there large shock when changing from ªNº to ªRº position?
No
EYe s Go to ª8. Large Shock. ªNº
,ªRº Positionº, AT-104.
1. Release foot brake for several seconds.
2. Does vehicle creep backward when foot brake is released?
Ye s
ENo Go to ª9. Vehicle Does Not
Creep Backward In ªRº
Positionº, AT-105.
1. Move selector lever to ªDº, ª1º and ª2º
position and check if vehicle creeps
forward.
2. Does vehicle creep forward in all three positions?
Ye s
ENo Go to ª10. Vehicle Does
Not Creep Forward In ªDº,
ª2º Or ª1º Positionº,
AT-106.
Go to ª3. Cruise testº, AT-36.
SAT796A
SAT797A
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TROUBLE DIAGNOSIS Ð Basic Inspection
Road Test (Cont'd)
AT-35
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CRUISE TEST Ð Part 1
Drive vehicle for approx. 10 minutes to
warm engine oil and ATF up to operating
temperature.ATF operating temperature:50 - 80ÉC (122 - 176ÉF)
1. Park vehicle on flat surface.
2. Set overdrive control switch to ªONº position.
3. Move selector lever to ªPº position.
4. Start engine.
Move selector lever to ªDº position.
Accelerate vehicle by constantly depress-
ing accelerator pedal halfway.
Does vehicle start from D1?
Read gear position.
Ye s
ENo Go to ª11. Vehicle Cannot
Be Started From D
1º,
AT-107.
Does A/T shift from D1to D2at the speci-
fied speed?
Read gear position, throttle open-
ing and vehicle speed.
Specified speed when shifting from
D
1to D2:
Refer to Shift schedule, AT-201.
Ye s
ENo Go to ª12. A/T Does Not
Shift: D
1,D2Or Does
Not Kickdown: D
4, D2º,
AT-201.
Does A/T shift from D2to D3at the speci-
fied speed?
Read gear position, throttle posi-
tion and vehicle speed.
Specified speed when shifting from
D
2to D3:
Refer to Shift schedule, AT-109.
Ye s
ENo Go to ª13. A/T Does Not
Shift: D
2,D3º, AT-109.
qA
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SAT774B
SAT775B
SAT495G
SAT401H
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TROUBLE DIAGNOSIS Ð Basic Inspection
Road Test (Cont'd)
AT-39
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