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![NISSAN X-TRAIL 2003 Service Repair Manual TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-69
[EURO-OBD]
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5. Start engine and measure line pressure at idle and stall speed.
When measuring line pressure at stall speed, fol NISSAN X-TRAIL 2003 Service Repair Manual TROUBLE DIAGNOSIS — BASIC INSPECTION
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5. Start engine and measure line pressure at idle and stall speed.
When measuring line pressure at stall speed, fol](/manual-img/5/57404/w960_57404-2104.png)
TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-69
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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
JUDGEMENT OF LINE PRESSURE TEST
SAT493G
Check lock-up hold.Line pressure kPa (bar, kg/cm2 , psi)
“D”, “2” and “1” positions “R” position
Idle 500 (5.00, 5.1, 73) 778 (7.78, 7.9, 113)
Stall 1,233 (12.33, 12.6, 179) 1,918 (19.18, 19.6, 278)
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- 2 3
.
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
Page 2106 of 4179
AT-70
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
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
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.
SAT786A
ON BOARD DIAGNOSTIC SYS-
TEM DESCRIPTIONTROUBLE DIAGNOSES FOR
SYMPTOMS
EURO-OBDAT- 4 0
to AT- 5 2AT-204 to AT- 2 3 7
SAT496G
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TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-71
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1. CHECK BEFORE ENGINE IS STARTED
1. CHECK O/D OFF INDICATOR LAMP
1. Park vehicle on flat surface.
2. Move selector lever to “P” position.
3. Turn ignition switch OFF. Wait at least 5 seconds.
4. Turn ignition switch ON. (Do not start engine.)
Does O/D OFF indicator lamp come on for about 2 seconds?
YES >> 1. Turn ignition switch OFF.
2. Perform self-diagnosis and note NG items.
Refer to AT- 4 5 , "
SELF-DIAGNOSTIC PROCEDURE
(WITH CONSULT-II)" , AT- 5 2 , "Diagnostic Procedure
Without CONSULT-II" .
3. Go to AT- 7 2 , "
2. CHECK AT IDLE" .
NO >> Stop “Road Test”. Go to AT- 2 0 4 , "
O/D OFF Indicator
Lamp Does Not Come On" .
SAT774B
SCIA5468E
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[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
2. CHECK AT IDLE
1. CHECK ENGINE START
1. Park vehicle on flat surface.
2. Turn ignition switch ON. (Do not start engine.)
3. Move selector le NISSAN X-TRAIL 2003 Service Repair Manual AT-72
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
2. CHECK AT IDLE
1. CHECK ENGINE START
1. Park vehicle on flat surface.
2. Turn ignition switch ON. (Do not start engine.)
3. Move selector le](/manual-img/5/57404/w960_57404-2107.png)
AT-72
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
2. CHECK AT IDLE
1. CHECK ENGINE START
1. Park vehicle on flat surface.
2. Turn ignition switch ON. (Do not start engine.)
3. Move selector lever to “P” or “N” position.
4. Turn ignition switch START position.
Is engine started?
YES >> GO TO 2.
NO >>
Stop “Road Test”. Mark the box on the “DIAGNOSTIC
WORKSHEET”. Refer to AT- 5 8
.
GO TO AT- 2 0 6 , "Engine Cannot Be Started In “P” and
“N” Position" .
2. CHECK ENGINE START
1. Turn ignition switch ON. (Do not start engine.)
2. Move selector lever to “R”, “D”, “2” or “1” position.
3. Turn ignition switch START position.
Is engine started?
YES >>Stop “Road Test”. Mark the box on the “DIAGNOSTIC
WORKSHEET”. Refer to AT- 5 8
.
GO TO AT- 2 0 6 , "Engine Cannot Be Started In “P” and
“N” Position" .
Continue “Road Test”.
NO >> GO TO 3.
3. CHECK VEHICLE MOVE
1. Move selector lever to “P” position.
2. Turn ignition switch OFF.
3. Release parking brake.
4. Push vehicle forward or backward.
Does vehicle move when it is pushed forward or backyard?
YES >>Mark the box on the “DIAGNOSTIC WORKSHEET”.
Refer to AT- 5 8
.
GO TO AT- 2 0 7 , "In “P” Position, Vehicle Moves For-
ward Or Backward When Pushed" .
Continue “Road Test”.
NO >> GO TO 4.
SAT769B
SAT770B
SAT768B
SAT796A
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AT-73
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4. CHECK VEHICLE MOVE
1. Apply parking brake.
2. Start engine.
3. Move selector lever to “N” position.
4. Releas NISSAN X-TRAIL 2003 Service Repair Manual TROUBLE DIAGNOSIS — BASIC INSPECTION
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4. CHECK VEHICLE MOVE
1. Apply parking brake.
2. Start engine.
3. Move selector lever to “N” position.
4. Releas](/manual-img/5/57404/w960_57404-2108.png)
TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-73
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4. CHECK VEHICLE MOVE
1. Apply parking brake.
2. Start engine.
3. Move selector lever to “N” position.
4. Release parking brake.
Does vehicle move forward or backward?
YES >>Mark the box on the “DIAGNOSTIC WORKSHEET”.
Refer to AT- 5 8
.
GO TO AT- 2 0 8 , "In “N” Position, Vehicle Moves" .
Continue “Road Test”.
NO >> GO TO 5.
5. CHECK SHIFT SHOCK
1. Apply foot brake.
2. Move selector lever to “R” position.
Is there large shock when changing from
“N” to “R” position?
YES >>Mark the box on the “DIAGNOSTIC WORKSHEET”.
Refer to AT- 5 8
.
GO TO AT- 2 0 9 , "Large Shock. “N” → “R” Position" .
Continue “Road Test”.
NO >> GO TO 6.
6. CHECK VEHICLE MOVE
Release foot brake for several seconds.
Does vehicle creep backward when foot brake is released?
YES >> GO TO 7.
NO >>
Mark the box on the “DIAGNOSTIC WORKSHEET”.
Refer to AT- 5 8
.
GO TO AT- 2 1 0 , "Vehicle Does Not Creep Backward
In “R” Position" .
Continue “Road Test”.
SAT771B
SAT797A
SAT772B
SAT799A
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AT-74
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
7. CHECK VEHICLE MOVE
Move selector lever to “D”, “2” and “1” positions and check if vehicle
creeps forward.
Does vehicle creep forward in all three positions?
YES >> Go to AT- 7 4 , "3. CRUISE TEST" .
NO >>
Mark the box on the “DIAGNOSTIC WORKSHEET”.
Refer to AT- 5 8
.
GO TO AT- 2 1 2 , "Vehicle Does Not Creep Forward In
“D”, “2” Or “1” Position" .
Continue “Road Test”.
3. CRUISE TEST
Check all items listed in Parts 1 through 3.
With CONSULT-II
Using CONSULT-II, conduct a cruise test and record the result.
Print the result and ensure that shifts and lock-ups take place as
per Shift Schedule.
CONSULT-II Setting Procedure
1. Turn ignition switch ON. (Do not start engine.)
2. Touch “START (NISSAN BASED VHCL)”.
3. Touch “A/T”.
If “A/T” is not indicated, go to GI-35, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
SAT773B
SAT601J
SAIA0450E
SAT014K
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TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-75
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4. Touch “DATA MONITOR”.
5. Touch “MAIN SIGNALS” or “TCM INPUT SIGNALS”.
6. Select “Numerical Display”, “Barchart Display” or “Line Graph
Display”.
7. Touch “SETTING” to recording condition (“AUTO TRIG” or
“MANU TRIG”) and touch “BACK”.
8. Touch “Start”.
9. When performing cruise test, touch “RECORD”.
SCIA5358E
SCIA5681E
SAT973J
SAT134K
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AT-76
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TROUBLE DIAGNOSIS — BASIC INSPECTION
10. After finishing cruise test part 1, touch “STOP”.
11. Touch “STORE” and touch “BACK”.
12. Touch “DISPLAY”.
13. Touch “PRINT”.
14. Check the monitor data printed out.
15. Continue cruise test part 2 and 3.
SAT135K
SAT987J
SAT974J
SAT975J