NISSAN X-TRAIL 2001 Service Repair Manual

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-63
[EURO-OBD]
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TROUBLE DIAGNOSIS — BASIC INSPECTIONPFP:00000
A/T Fluid CheckECS004QQ
FLUID LEAKAGE CHECK
1. Clean area suspected of leaking. — for example, mating surface
of converter housing and transmission case.
2. Start engine, apply foot brake, place selector lever in “D” posi-
tion and wait a few minutes.
3. Stop engine.
4. Check for fresh leakage.
FLUID CONDITION CHECK
FLUID LEVEL CHECK
Refer to AT-13, "Checking A/T Fluid" .
SAT767B
SAT288G
Fluid color Suspected problem
Dark or black with burned odor Wear of frictional material
Milky pink Water contamination — Road water
entering through filler tube or breather
Varnished fluid, light to dark brown and
tackyOxidation — Over or under filling, —
Overheating
SAT638A

AT-64
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
Stall Test
ECS004QR
STALL TEST PROCEDURE
1. Check A/T fluid and engine oil levels. If necessary, add.
2. Drive vehicle for approx. 10 minutes or until fluid and oil reach
operating temperature.
3. Set parking brake and block wheels.
4. Install a tachometer where it can be seen by driver during test.
●It is good practice to mark the point of specified engine
rpm on indicator.
5. Start engine, apply foot brake, and place selector lever in D
position.
6. Accelerate to wide open throttle gradually while applying foot
brake.
7. Quickly note the engine stall revolution and immediately release
throttle.
●During test, never hold throttle wide open for less than 5
seconds.
Stall revolution:
8. Move selector lever to “N” position.
9. Cool off ATF.
●Run engine at idle for at least one minute.
10. Repeat steps 5 through 9 with selector lever in “2”, “1” and “R”
positions.ATF operating temperature:
50 - 80°C (122 - 176°F)
SAT647B
SAT513G
SAT514G
QR20DE 2,450 - 2,950 rpm
QR25DE 2,300 - 2,750 rpm
SAT771B

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-65
[EURO-OBD]
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JUDGEMENT OF STALL TEST
The test result and possible damaged components relating to each result are shown in the illustrations on next
page.
In order to pinpoint the possible damaged components, follow the WORK FLOW shown in AT-60, "
Work Flow"
(EURO-OBD).
NOTE:
Stall revolution is too high in “D”, “2” or “1” position:
●Slippage occurs in 1st gear but not in 2nd and 3rd gears...... Low one-way clutch slippage
●Slippage occurs in the following gears:
1st through 3rd gears in “D” position and engine brake functions with overdrive control switch set to
“OFF”.
1st and 2nd gears in “2” 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 R position:
●Engine brake does not function in “1” position...... Low & reverse brake slippage
●Engine brake functions in “1” position...... Reverse clutch slippage
Stall revolution within specifications:
●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.
●Slippage occurs in 3rd and 4th gears in “D” position...... High clutch slippage
●Slippage occurs in 2nd and 4th gear in “D” position...... Brake band slippage
●Engine brake does not function in 2nd and 3rd gears in “D” position, 2nd gear in “2” position, and 1st gear
in “1” position with overdrive control switch set to “OFF”...... Overrun clutch slippage
Stall revolution less than specifications:
●Poor acceleration during starts...... One-way clutch slippage in torque converter

AT-66
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
SCIA0707E

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-67
[EURO-OBD]
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Line Pressure TestECS004QS
LINE PRESSURE TEST PORTS
Location of line pressure test ports are shown in the illustration.
●Always replace pressure plugs as they are self-sealing
bolts.
LINE PRESSURE TEST PROCEDURE
1. Check A/T fluid and engine oil levels. If necessary, add fluid or
oil.
2. Drive vehicle for approx. 10 minutes or until engine oil and AT F
reach operating temperature.
3. Install pressure gauge to corresponding line pressure port.
4. Set parking brake and block wheels.
●Continue to depress brake pedal fully while line pressure
test is being performed at stall speed.
SCIA0709E
ATF operating temperature: 50 - 80°C (122 -176°F)
SAT647B
UAT008
UAT008

AT-68
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
5. Start engine and measure line pressure at idle and stall speed.
●When measuring line pressure at stall speed, follow the
stall test procedure.
Line pressure: Refer to AT- 5 2 1 , "
SERVICE DATA AND SPECIFI-
CATIONS (SDS)" .
JUDGEMENT OF LINE PRESSURE TEST
Road TestECS004QT
DESCRIPTION
●The purpose of the test is to determine overall performance of A/
T and analyze causes of problems.
●The road test consists of the following three parts:
1. Check before engine is started
2. Check at idle
SAT493G
Judgement Suspected parts
At idleLine pressure is low in all positions.
●Oil pump wear
●Control piston damage
●Pressure regulator valve or plug sticking
●Spring for pressure regulator valve damaged
●Fluid pressure leakage between oil strainer and pressure regulator valve
●Clogged strainer
Line pressure is low in particular posi-
tion.
●Fluid pressure leakage between manual valve and particular clutch
●For example, line pressure is:
− Low in “R” and “1” positions, but
− Normal in “D” and “2” positions.
Therefore, fluid leakage exists at or around low and reverse brake circuit.
Refer to AT- 1 9 , "
CLUTCH AND BAND CHART" .
Line pressure is high.
●Maladjustment of throttle position sensor
●A/T fluid temperature sensor damaged
●Line pressure solenoid valve sticking
●Short circuit of line pressure solenoid valve circuit
●Pressure modifier valve sticking
●Pressure regulator valve or plug sticking
●Open in dropping resistor circuit
At stall
speedLine pressure is low.
●Maladjustment of throttle position sensor
●Line pressure solenoid valve sticking
●Short circuit of line pressure solenoid valve circuit
●Pressure regulator valve or plug sticking
●Pressure modifier valve sticking
●Pilot valve sticking
SAT786A

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-69
[EURO-OBD]
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3. Cruise test
●Before road test, familiarize yourself with all test procedures and
items to check.
●Conduct tests on all items until specified symptom is found.
Troubleshoot items which check out No Good after road test.
Refer to the following items.
ON BOARD DIAGNOSTIC SYS-
TEM DESCRIPTIONTROUBLE DIAGNOSES FOR
SYMPTOMS
EURO-OBDAT- 3 7 , "
ON BOARD DIAGNOS-
TIC SYSTEM DESCRIPTION"
to AT-50, "Diagnostic Procedure
Without CONSULT-II"
AT- 2 0 9 , "O/D OFF Indicator
Lamp Does Not Come On" to AT-
241, "TCM Self-diagnosis Does
Not Activate"
SAT496G

AT-70
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
1. CHECK BEFORE ENGINE IS STARTED
1. CHECK O/D OFF INDICATOR LAMP
1. Park vehicle on flat surface.
2. Turn ignition switch to “OFF” position.
3. Move selector lever to “P” position.
4. Set overdrive control switch to “ON” position.
5. Turn ignition switch to “ON” position. (Do not start engine.)
6. Does O/D OFF indicator lamp come on for about 2 seconds?
Ye s o r N o
Yes >> GO TO 2
No >> Stop Road Test. Go to “O/D OFF Indicator Lamp Does
Not Come On”, AT- 2 0 9
.
2. CHECK O/D OFF INDICATOR LAMP
Does O/D OFF indicator lamp flicker for about 8 seconds?
Ye s o r N o
Yes (Except for Euro-OBD)>>TCM is under fail-safe mode. Per-
form self-diagnosis and check NG items on the DIAG-
NOSTIC WORKSHEET, AT- 2 5 9 , "
DIAGNOSTIC
WORKSHEET" . Refer to AT- 2 5 3 , "SELF-DIAGNOSTIC
PROCEDURE (WITHOUT CONSULT-II)" .
No (Except for Euro-OBD)>>1.Turn ignition switch to “OFF” posi-
tion.
2. Perform self-diagnosis and note NG items.
Refer to AT- 2 5 3 , "
SELF-DIAGNOSTIC PROCEDURE
(WITHOUT CONSULT-II)" .
3. Go to “2. CHECK AT IDLE”, AT- 7 1
.
Yes (EURO-OBD)>>TCM is under fail-safe mode. Perform self-diagnosis and check NG items on the DIAG-
NOSTIC WORKSHEET, AT- 5 7 , "
DIAGNOSTIC WORKSHEET" . Refer to AT- 5 1 , "TCM SELF-
DIAGNOSTIC PROCEDURE (NO TOOLS)" .
No (EURO-OBD)>>1.Turn ignition switch to “OFF” position.
2. Perform self-diagnosis and note NG items.
Refer to AT- 5 1 , "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)" .
3. Go to “2. CHECK AT IDLE”, AT- 7 1
.
SAT774B
SCIA0693E
SCIA0693E

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-71
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2. CHECK AT IDLE
1.CHECK ENGINE START
1. Park vehicle on flat surface.
2. Turn ignition switch to “OFF” position.
3. Move selector lever to “P” or “N” position.
4. Turn ignition switch to “START” position.
5. Is engine started?
Ye s o r N o
Ye s > > G O T O 2
No >> Stop Road Test. Mark the box on the DIAGNOSTIC
WORKSHEET.Go to “Engine Cannot Be Started In “P”
and “N” Position” AT- 2 11
.
2.CHECK ENGINE START
1. Turn ignition switch to “OFF” position.
2. Move selector lever to “D”, “1”, “2” or “R” position.
3. Turn ignition switch to “START” position.
4. Is engine started?
Ye s o r N o
Yes >> Stop Road Test. Mark the box on the DIAGNOSTIC
WORKSHEET. Go To “Engine Cannot Be Started In “P”
and “N” Position”, AT- 2 11
. Continue Road Test.
No >> GO TO 3
SAT769B
SAT770B

AT-72
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
3. CHECK VEHICLE MOVE
1. Turn ignition switch to “OFF” position.
2. Move selector lever to “P” position.
3. Release parking brake.
4. Push vehicle forward or backward.
5. Does vehicle move when it is pushed forward or backward?
Ye s o r N o
Yes >> Mark the box of “In “P” Position, Vehicle Moves Forward
Or Backward When Pushed” on the DIAGNOSTIC
WORKSHEET. Continue Road Test.
No >> GO TO 4
4. CHECK VEHICLE MOVE
1. Apply parking brake.
2. Move selector lever to “N” position.
3. Turn ignition switch to “START” position and start engine.
4. Release parking brake.
5. Does vehicle move forward or backward?
Ye s o r N o
Yes >> Mark the box of “In “N” Position, Vehicle Moves” on the
DIAGNOSTIC WORKSHEET. Continue Road Test.
No >> GO TO 5
SAT768B
SAT796A
SAT771B