engine NISSAN X-TRAIL 2003 Electronic Repair Manual

AT-280
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
DIAGNOSTIC WORKSHEET
Information from Customer
KEY POINTS
lWHAT..... Vehicle & A/T model
lWHEN..... Date, Frequencies
lWHERE..... Road conditions
lHOW..... Operating conditions, Symptoms
Customer name MR/MS Model & Year VIN
Trans. model Engine Mileage
Incident Date Manuf. Date In Service Date
FrequencyoContinuousoIntermittent ( times a day)
SymptomsoVehicle does not move. (oAny positionoParticular position)
oNo up-shift (o1st®2ndo2nd®3rdo3rd®O/D)
oNo down-shift (oO/D®3rdo3rd®2ndo2nd®1st)
oLockup malfunction
oShift point too high or too low.
oShift shock or slip (oN®DoLockupoAny drive position)
oNoise or vibration
oNo kickdown
oNo pattern select
oOthers
()
O/D OFF indicator lamp Blinks for about 8 seconds.
oContinuously litoNot lit

TROUBLE DIAGNOSIS — INTRODUCTION
AT-281
[EXC.F/EURO-OBD]
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Diagnostic Worksheet
1.oRead the Fail-safe and listen to customer complaints.AT- 8 , "Wiring
Diagrams
and Trouble
Diagnosis",
AT- 2 8 0 ,
"DIAGNOS-
TIC WORK-
SHEET"
2.oCHECK A/T FLUIDAT- 2 8 6 , "A/T
Fluid Check"oLeakage (Follow specified procedure)
oFluid condition
oFluid level
3.oPerform STALL TEST and LINE PRESSURE TEST.AT- 2 8 7 , "
St a l l
Te s t",AT-
290, "Line
Pressure
Te s t"
oStall test — Mark possible damaged components/others.
oTorque converter one-way clutch
oReverse clutch
oForward clutch
oOverrun clutch
oForward one-way clutchoLow & reverse brake
oLow one-way clutch
oEngine
oLine pressure is low
oClutches and brakes except high clutch and
brake band are OK
oLine Pressure test — Suspected parts:

AT-282
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
4.oPerform all ROAD TEST and mark required procedures.AT-291,
"Road Test"
4-
1.Check before engine is started.AT-292, "1.
CHECK
BEFORE
ENGINE IS
STARTED"
oSELF-DIAGNOSTIC CONFIRMATION PROCEDURE — Mark detected items.
oVehicle speed sensor·A/T (Revolution sensor),AT-392, "
VEHICLE SPEED SENSOR·A/T (REVO-
LUTION SENSOR)".
oVehicle speed sensor·MTR,AT- 3 9 7 , "
DTC VEHICLE SPEED SENSOR MTR".
oAccelerator pedal position (App) sensor,AT-401, "
ACCELE RATOR PEDAL POSITION (APP)
SENSOR".
oShift solenoid valve A,AT-406, "
SHIFT SOLENOID VALVE A".
oShift solenoid valve B,AT-4 11 , "
SHIFT SOLENOID VALVE B".
oOverrun clutch solenoid valve,AT-416, "
OVERRUNCLUTCHSOLENOIDVALVE".
oTorque converter clutch solenoid valve,AT- 4 2 1 , "
TORQUE CONVERTER CLUTCH SOLENOID
VA LV E".
oA/T fluid temperature sensor and TCM power source,AT-426, "
BATT/FLUID TEMP SEN (A/T
FLUID TEMP SENSOR CIRCUIT AND TCM POWER SOURCE)".
oEngine speed signal,AT-432, "
ENGINE SPEED SIGNAL".
oLine pressure solenoid valve,AT- 4 3 6 , "
LINE PRESSURE SOLENOID VALVE".
oCAN communication line,AT-4 4 3 , "
CAN CAMMUNICATION LINE".
oControl unit (RAM), control unit (ROM),AT- 2 2 6 , "
DTC CONTROL UNIT (RAM), CONTROL UNIT
(ROM)".
oControl unit (EEP ROM),AT-228, "
DTC CONTROL UNIT(EEPROM)".
oPNP & overdrive control switches, and throttle position sensor,AT- 3 8 2 , "
21. TCM Self-diagnosis
Does Not Activate (PNP & Overdrive Control Switches, and Throttle Position Sensor Circuit Checks)"
.
oBattery
oOthers
4-
2.Check at idleAT-293, "
2.
CHECK AT
IDLE"o1. O/D OFF Indicator Lamp Does Not Come On,AT-354, "1. O/D OFF Indicator Lamp Does Not Come
On".
o2. Engine Cannot Be Started In “P” And “N” Position,AT- 3 5 5 , "
2. Engine Cannot Be Started In“P”and“N”
Position".
o3. In “P” Position, Vehicle Moves Forward Or Backward When Pushed,AT- 3 5 6 , "
3. In“P”Position, Vehi-
cle Moves Forward Or Backward When Pushed".
o4. In “N” Position, Vehicle Moves,AT- 3 5 6 , "
4. In“N”Position, Vehicle Moves".
o5. Large Shock. “N”®“R” Position,AT-358, "
5. Large Shock.“N”®“R”Position".
o6. Vehicle Does Not Creep Backward In “R” Position,AT- 3 5 9 , "
6. Vehicle Does Not Creep Backward In
“R”Position".
o7. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position,AT- 3 6 2 , "
7. Vehicle Does Not Creep For-
ward In“D”,“2”Or“1”Position".

TROUBLE DIAGNOSIS — INTRODUCTION
AT-283
[EXC.F/EURO-OBD]
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4. 4-
3.Cruise testAT- 2 9 6 , "3.
CRUISE
TEST"
AT- 3 0 0 ,
"Cruise Test
—Part 1"
Part-1
o8. Vehicle Cannot Be Started From D
1,AT- 3 6 4 , "8. Vehicle Cannot Be Started From D1".
o9. A/T Does Not Shift: D
1®D2Or Does Not Kickdown: D4®D2,AT- 3 6 6 , "9. A/T Does Not Shift: D1
®D2Or Does Not Kickdown: D4®D2".
o10. A/T Does Not Shift: D
2®D3,AT-368, "10. A/T Does Not Shift: D2®D3".
o11. A/T Does Not Shift: D
3®D4,AT-371, "11.A/TDoesNotShift:D3®D4".
o12. A/T Does Not Perform Lock-up,AT- 3 7 4 , "
12. A/T Does Not Perform Lock-up".
o13. A/T Does Not Hold Lock-up Condition,AT- 3 7 5 , "
13. A/T Does Not Hold Lock-up Condition".
o14. Lock-up Is Not Released,AT- 3 7 6 , "
14. Lock-up Is Not Released".
o15. Engine Speed Does Not Return To Idle (Light Braking D
4®D3),AT-377, "15. Engine Speed Does
Not Return To Idle (Light Braking D4®D3)".
Part-2AT- 3 0 3 ,
"Cruise Test
—Part 2"o16. Vehicle Does Not Start From D1,AT- 3 7 9 , "16. Vehicle Does Not Start From D1".
o9. A/T Does Not Shift: D
1®D2Or Does Not Kickdown: D4®D2,AT- 3 6 6 , "9. A/T Does Not Shift: D1
®D2Or Does Not Kickdown: D4®D2".
o10. A/T Does Not Shift: D
2®D3,AT-368, "10. A/T Does Not Shift: D2®D3".
o11. A/T Does Not Shift: D
3®D4,AT-371, "11.A/TDoesNotShift:D3®D4".
Part-3AT- 3 0 5 ,
"Cruise Test
—Part 3"o17.A/TDoesNotShift:D4®D3When Overdrive Control Switch “ON”®“OFF”,AT-380, "17. A/T Does
Not Shift: D4®D3, When Overdrive Control Switch“ON”®“OFF”".
o15. Engine Speed Does Not Return To Idle (Engine Brake In D
3),AT-377, "15. Engine Speed Does Not
Return To Idle (Light Braking D4®D3)".
o18. A/T Does Not Shift: D
3®22, When Selector Lever “D”®“2” Position,AT-380, "18. A/T Does Not
Shift: D3®22, When Selector Lever“D”®“2”Position".
o15. Engine Speed Does Not Return To Idle (Engine Brake In 2
2),AT- 3 7 7 , "15. Engine Speed Does Not
Return To Idle (Light Braking D4®D3)".
o19. A/T Does Not Shift: 2
2®11, When Selector Lever “2”®“1” Position,AT-381, "19. A/T Does Not
Shift: 22®11, When Selector Lever“2”®“1”Position".
o20. Vehicle Does Not Decelerate By Engine Brake,AT- 3 8 1 , "
20. Vehicle Does Not Decelerate By Engine
Brake".
o21. TCM Self-diagnosis Does Not Activate (PNP & Overdrive Control Switches , and throttle position sen-
sor Circuit Checks),AT-382, "
21. TCM Self-diagnosis Does Not Activate (PNP & Overdrive Control
Switches, and Throttle Position Sensor Circuit Checks)".
oSELF-DIAGNOSTIC PROCEDURE — Mark detected items.
oVehicle speed sensor·A/T (Revolution sensor),AT- 3 9 2 , "
VEHICLE SPEED SENSOR·A/T (REVO-
LUTION SENSOR)".
oVehicle speed sensor·MTR,AT-397, "
DTC VEHICLE SPEED SENSOR MTR".
oAccelerator pedal position(APP) sensor,AT- 4 0 1 , "
ACCELE RATOR PEDAL POSITION (APP)
SENSOR".
oShift solenoid valve A,AT-406, "
SHIFT SOLENOID VALVE A".
oShift solenoid valve B,AT-4 11 , "
SHIFT SOLENOID VALVE B".
oOverrun clutch solenoid valve,AT- 4 1 6 , "
OVERRUNCLUTCHSOLENOIDVALVE".
oTorque converter clutch solenoid valve,AT-421, "
TORQUE CONVERTER CLUTCH SOLENOID
VA LV E".
oBatt/fluid temp sen (A/T fluid temperature sensor and TCM power source),AT-426, "
BATT/FLUID
TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POWER SOURCE)".
oEngine speed signal,AT- 4 3 2 , "
ENGINE SPEED SIGNAL".
oLine pressure solenoid valve,AT-436, "
LINE PRESSURE SOLENOID VALVE".
oCAN communication line,AT-443, "
CAN CAMMUNICATION LINE".
oControl unit (RAM), control unit (ROM),AT- 2 2 6 , "
DTC CONTROL UNIT (RAM), CONTROL UNIT
(ROM)".
oControl unit (EEP ROM),AT- 2 2 8 , "
DTC CONTROL UNIT(EEPROM)".
oPNP & overdrive control switches, and throttle position sensor,AT- 3 8 2 , "
21. TCM Self-diagnosis
Does Not Activate (PNP & Overdrive Control Switches, and Throttle Position Sensor Circuit Checks)"
.
oBattery
oOthers

AT-286
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
TROUBLE DIAGNOSIS — BASIC INSPECTION
PFP:00000
A/T Fluid CheckECS004VR
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 “Checking A/T Fluid”,AT-13, "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

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-287
[EXC.F/EURO-OBD]
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Stall TestECS004VS
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-288
[EXC.F/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

AT-290
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
Line Pressure Test
ECS004VT
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-291
[EXC.F/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 TestECS004VU
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-292
[EXC.F/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 - 3 5 4 , "
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- 3 5 4 , "1. O/D OFF Indicator
Lamp Does Not Come On"toAT-
382, "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- 3 5 4 , "1. O/D OFF Indicator
Lamp Does Not Come On"toAT-
382, "21. TCM Self-diagnosis
Does Not Activate (PNP & Over-
drive Control Switches, and
Throttle Position Sensor Circuit
Checks)"
SAT496G
SAT774B
SCIA0693E