NISSAN X-TRAIL 2003 Electronic Manual PDF

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-65
[EURO-OBD]
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Stall TestECS004QR
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.
lIt 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.
lDuring test, never hold throttle wide open for less than 5
seconds.
Stall revolution:
8. Move selector lever to “N” position.
9. Cool off ATF.
lRun 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
SAT771B

AT-66
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
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 inAT-284, "
Work
Flow"(EXCEPT FOR EURO-OBD) orAT-61, "Work Flow"(EURO-OBD).
NOTE:
Stall revolution is too high in “D”, “2” or “1” position:
lSlippage occurs in 1st gear but not in 2nd and 3rd gears. ..... Low one-way clutch slippage
lSlippage 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:
lEngine brake does not function in “1” position. ..... Low & reverse brake slippage
lEngine brake functions in “1” position. ..... Reverse clutch slippage
Stall revolution within specifications:
lVehicle 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.
lSlippage occurs in 3rd and 4th gears in “D” position. ..... High clutch slippage
lSlippage occurs in 2nd and 4th gear in “D” position. ..... Brake band slippage
lEngine 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”.
Stall revolution less than specifications:
lPoor acceleration during starts. ..... One-way clutch seizure in torque converter

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-67
[EURO-OBD]
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SCIA0707E

AT-68
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
Line Pressure Test
ECS004QS
LINE PRESSURE TEST PORTS
Location of line pressure test ports are shown in the illustration.
lAlways 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 ATF
reach operating temperature.
3. Install pressure gauge to corresponding line pressure port.
4. Set parking brake and block wheels.
lContinue 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

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-69
[EURO-OBD]
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5. Start engine and measure line pressure at idle and stall speed.
lWhen measuring line pressure at stall speed, follow the
stall test procedure.
Line pressure: Refer toAT-563, "
SERVICE DATA AND SPECIFI-
CATIONS (SDS)".
JUDGEMENT OF LINE PRESSURE TEST
Road TestECS004QT
DESCRIPTION
lThe purpose of the test is to determine overall performance of A/
T and analyze causes of problems.
lThe 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.
lOil pump wear
lControl piston damage
lPressure regulator valve or plug sticking
lSpring for pressure regulator valve damaged
lFluid pressure leakage between oil strainer and pressure regulator valve
lClogged strainer
Line pressure is low in particular posi-
tion.
lFluid pressure leakage between manual valve and particular clutch
lFor 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 “CLUTCH AND BAND CHART”,AT-19, "
CLUTCH AND BAND
CHART".
Line pressure is high.
lMaladjustment of throttle position sensor
lA/T fluid temperature sensor damaged
lLine pressure solenoid valve sticking
lShort circuit of line pressure solenoid valve circuit
lPressure modifier valve sticking
lPressure regulator valve or plug sticking
lOpen in dropping resistor circuit
At stall
speedLine pressure is low.
lMaladjustment of throttle position sensor
lLine pressure solenoid valve sticking
lShort circuit of line pressure solenoid valve circuit
lPressure regulator valve or plug sticking
lPressure modifier valve sticking
lPilot valve sticking
SAT786A

AT-70
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
3. Cruise test
lBefore road test, familiarize yourself with all test procedures and
items to check.
lConduct tests on all items until specified symptom is found.
Troubleshoot items which check out No Good after road test.
Refer to the following items.
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 >>GOTO2
No >> Stop ROAD TEST. Go to “1. O/D OFF Indicator Lamp
Does Not Come On”,AT - 2 3 2 , "
1. O/D OFF Indicator
Lamp Does Not Come On".
ON BOARD DIAGNOSITC SYS-
TEM DESCRIPTIONTROUBLE DIAGNOSES FOR
SYMPTOMS
Except for
Euro-OBDAT- 2 6 7 , "
ON BOARD DIAG-
NOSTIC SYSTEM DESCRIP-
TION"toAT- 5 0 , "Diagnostic
Procedure Without CONSULT-
II"
AT- 2 3 2 , "1. O/D OFF Indicator
Lamp Does Not Come On"toAT-
260, "21. TCM Self-diagnosis
Does Not Activate (PNP & Over-
drive Control Switches, and
Throttle Position Sensor Circuit
Checks)"
EURO-OBDAT- 3 7 , "
ON BOARD DIAGNOS-
TIC SYSTEM DESCRIPTION"
toAT- 5 0 , "Diagnostic Procedure
Without CONSULT-II"
AT- 2 3 2 , "1. O/D OFF Indicator
Lamp Does Not Come On"toAT-
260, "21. TCM Self-diagnosis
Does Not Activate (PNP & Over-
drive Control Switches, and
Throttle Position Sensor Circuit
Checks)"
SAT496G
SAT774B
SCIA0693E

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-71
[EURO-OBD]
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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 )>>Perform self-diagnosis and check
NG items on the DIAGNOSTIC WORKSHEET,AT-280,
"DIAGNOSTIC WORKSHEET". Refer toAT-273,
"SELF-DIAGNOSTIC PROCEDURE (WITHOUT CON-
SULT-II)".
No (Except for Euro-OBD)>>1.Turn ignition switch to “OFF” posi-
tion.
2. Perform self-diagnosis and note NG items.
Refer toAT-273, "
SELF-DIAGNOSTIC PROCEDURE
(WITHOUT CONSULT-II)".
3. Go to “2. CHECK AT IDLE”,AT-71, "
2. CHECK AT IDLE".
Yes (EURO-OBD)>>Perform self-diagnosis and check NG items on the DIAGNOSTIC WORKSHEET,AT-57,
"DIAGNOSTIC WORKSHEET". Refer toAT - 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 toAT-51, "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)".
3. Go to “2. CHECK AT IDLE”,AT-71, "
2. CHECK AT IDLE".
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
Yes >>GOTO2
No >> Mark the box on the DIAGNOSTIC WORKSHEET.Go to
"2 Engine Cannot Be Started In “P” and “N” Position”,
AT-233, "
2. Engine Cannot Be Started In“P”and“N”
Position". Continue ROAD TEST.
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 >> Mark the box on the DIAGNOSTIC WORKSHEET. Go
To "2. Engine Cannot Be Started In “P” and “N” Posi-
tion”,AT-233, "
2. Engine Cannot Be Started In“P”and
“N”Position". Continue ROAD TEST.
No >> GO TO 3
SCIA0693E
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 on the DIAGNOSTIC WORKSHEET. Go
To "3. In “P” Position, Vehicle Moves Forward Or Back-
ward When Pushed”,AT-234, "
3. In“P”Position, Vehicle
Moves Forward Or Backward When Pushed". 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 on the DIAGNOSTIC WORKSHEET. Go
To "4. In “N” Position, Vehicle Moves”,AT-234, "
4. In“N”
Position, Vehicle Moves". Continue ROAD TEST.
No >> GO TO 5
SAT768B
SAT796A
SAT771B

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-73
[EURO-OBD]
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5.CHECK SHIFT SHOCK
1. Apply foot brake.
2. Move selector lever to “R” position.
3. Is there large shock when changing from “N” to “R” position?
Ye s o r N o
Yes >> Mark the box on the DIAGNOSTIC WORKSHEET. Go
To "5. Large Shock “N”®“R” Position”,AT-236, "
5.
Large Shock.“N”®“R”Position".ContinueROAD
TEST.
No >> GO TO 6
6.CHECK VEHICLE MOVE
1. Release foot brake for several seconds.
2. Does vehicle creep backward when foot brake is released?
Ye s o r N o
Yes >>GOTO7
No >> Mark the box on the DIAGNOSTIC WORKSHEET. Go
To "6. Vehicle Does Not Creep Backward In “R” Posi-
tion”,AT-237, "
6. Vehicle Does Not Creep Backward In
“R”Position". Continue ROAD TEST.
7.CHECK VEHICLE MOVE
1. Move selector lever to “D”, “2” and “1” positions and check if
vehicle creeps forward.
2. Does vehicle creep forward in all three positions?
Ye s o r N o
Yes >> Go To "3. CRUISE TEST", $$$$$.
No >> Mark the box on the DIAGNOSTIC WORKSHEET. Go
To "7. Vehicle Does Not Creep Forward In “D”, “2” Or “1”
Position”,AT-240, "
7. Vehicle Does Not Creep Forward
In“D”,“2”Or“1”Position". Continue ROAD TEST.
SAT797A
SAT772B
SAT799A
SAT773B

AT-74
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
3. CRUISE TEST
lCheck all items listed in Parts 1 through 3.
With CONSULT-II
lUsing CONSULT-II, conduct a cruise test and record the result.
lPrint 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 to data link connector, which is located in
left side lower dash panel.
3. Turn ignition switch “ON”.
4. Touch “START”.
SAT601J
SCIA0691E
SCIA0692E
SAT586J