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![NISSAN X-TRAIL 2003 Service Repair Manual TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-261
[EXC.F/EURO-OBD]
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5. Start engine and measure line pressure at idle and stall speed.
When measuring line pressure at stall spe NISSAN X-TRAIL 2003 Service Repair Manual TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-261
[EXC.F/EURO-OBD]
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5. Start engine and measure line pressure at idle and stall speed.
When measuring line pressure at stall spe](/manual-img/5/57404/w960_57404-2296.png)
TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-261
[EXC.F/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, 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 2298 of 4179
AT-262
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
Road TestECS004VU
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
Except for
Euro-OBD AT- 2 4 2
to AT-246AT-291 to AT- 3 2 4SAT496G
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TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-263
[EXC.F/EURO-OBD]
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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 to OFF position.
4. Wait 5 seconds.
5. Set overdrive control switch to ON position.
6. Turn ignition switch to ON. (Do not start engine.)
Does O/D OFF indicator lamp come on for about 2 seconds?
YES >> 1. Turn ignition switch to OFF position.
2. Perform self-diagnosis and note NG items.
Refer to AT- 2 4 6 , "
SELF-DIAGNOSTIC PROCEDURE
(WITHOUT CONSULT-II)" .
3. GO TO “2. CHECK AT IDLE”, AT- 2 6 4
.
NO >> Stop road test. GO TO “O/D OFF indicator Lamp Does
Not Come On”. AT- 2 9 1
.
SAT774B
SCIA5468E
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![NISSAN X-TRAIL 2003 Service Repair Manual AT-264
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
2. CHECK AT IDLE
1. CHECK ENGINE START
1. Park vehicle on flat surface.
2. Move selector lever to P or N position.
3. Turn ignition swi NISSAN X-TRAIL 2003 Service Repair Manual AT-264
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
2. CHECK AT IDLE
1. CHECK ENGINE START
1. Park vehicle on flat surface.
2. Move selector lever to P or N position.
3. Turn ignition swi](/manual-img/5/57404/w960_57404-2299.png)
AT-264
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
2. CHECK AT IDLE
1. CHECK ENGINE START
1. Park vehicle on flat surface.
2. Move selector lever to P or N position.
3. Turn ignition switch to OFF position.
4. Turn ignition switch to START position.
Is engine started?
YES >> GO TO 2.
NO >>
Stop Road Test. Mark the box on the DIAGNOSTIC
WORKSHEET. Refer to AT- 2 5 2 , "
DIAGNOSTIC
WORKSHEET" .
GO TO AT- 2 9 3 , "Engine Cannot Be Started In “P” and
“N” Position" .
2. CHECK ENGINE START
1. Turn ignition switch to ON position. (Do not start engine.)
2. Move selector lever to D, 1, 2 or R position.
3. Turn ignition switch to START.
Is engine started?
YES >>Stop Road Test. Mark the box on the DIAGNOSTIC
WORKSHEET. Refer to AT- 2 5 2 , "
DIAGNOSTIC
WORKSHEET" .
GO TO AT- 2 9 3 , "Engine Cannot Be Started In “P” and
“N” Position" .
Continue Road Test. Refer to AT- 2 6 2 , "Road Test" .
NO >> GO TO 3.
3. CHECK VEHICLE MOVE
1. Move selector lever to P position.
2. Turn ignition switch to OFF position.
3. Release parking brake.
4. Push vehicle forward or backward.
Does vehicle move when it is pushed forward or backward?
YES >>Mark the box on the DIAGNOSTIC WORKSHEET.
Refer to AT- 2 5 2 , "
DIAGNOSTIC WORKSHEET" .
GO TO AT- 2 9 4 , "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-265
[EXC.F/EURO-OBD]
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4. CHECK VEHICLE MOVE
1. Apply parking brake.
2. Start engine.
3. Move selector lever to N position.
4. Relea NISSAN X-TRAIL 2003 Service Repair Manual TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-265
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4. CHECK VEHICLE MOVE
1. Apply parking brake.
2. Start engine.
3. Move selector lever to N position.
4. Relea](/manual-img/5/57404/w960_57404-2300.png)
TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-265
[EXC.F/EURO-OBD]
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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-252, "DIAGNOSTIC WORK-
SHEET" .
GO TO AT- 2 9 5 , "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- 2 5 2 , "
DIAGNOSTIC WORKSHEET" .
GO TO AT- 2 9 6 , "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- 2 5 2 , "
DIAGNOSTIC WORKSHEET" .
GO TO AT- 2 9 7 , "Vehicle Does Not Creep Backward
In “R” Position" .
Continue “Road Test”.
SAT797A
SAT772B
SAT799A
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AT-266
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
7. CHECK VEHICLE MOVE
1. Move selector lever to D, 2 and 1 positions and check if vehicle
creeps forward.
Does vehicle creep forward in all three position?
YES >> GO TO AT- 2 6 6 , "3. CRUISE TEST" .
NO >>
Mark the box on the DIAGNOSTIC WORKSHEET.
Refer to AT- 2 5 2 , "
DIAGNOSTIC WORKSHEET" .
GO TO AT- 2 9 9 , "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 OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector, which is located in instrument lower panel on
driver side.
SAT773B
SAT601J
SCIA0691E
SCIA0692E
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TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-267
[EXC.F/EURO-OBD]
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3. Turn ignition switch ON. (Do not start engine.)
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “A/T”.
If “A/T” is not indicated, go to GI-35, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
6. Touch “DATA MONITOR”.
7. Touch “MAIN SIGNALS” or “TCM INPUT SIGNALS”.
8. Select “Numerical Display”, “Barchart Display” or “Line Graph
Display”.
SAIA0450E
SAT014K
SCIA5358E
SAT175K
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AT-268
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
9. Touch “SETTING” to recording condition (“AUTO TRIG” or
“MANU TRIG”) and touch “BACK”.
10. Touch “Start”.
11. When performing cruise test, touch “RECORD”.
12. After finishing cruise test part 1, touch “STOP”.
13. Touch “STORE” and touch “BACK”.
SAT973J
SAT134K
SAT135K
SAT987J