code NISSAN X-TRAIL 2003 Electronic Manual Online

AT-424
[ALL]
TORQUE CONVERTER CLUTCH SOLENOID VALVE
Diagnostic Procedure
ECS004U6
1.CHECK VALVE RESISTANCE
1. Turn ignition switch to “OFF” position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal 5 and ground.
OK or NG
OK >> GO TO 2
NG >> 1. Remove oil pan. Refer toAT- 4 5 3 , "
Installation".
2. Check the following items:
Torque converter clutch solenoid valve
Refer to “Component Inspection”,AT-425, "
Compo-
nent Inspection".
Harness of terminal cord assembly for short or open
2.CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Disconnect TCM harness connector.
3. Check continuity between terminal 5 and TCM harness connector terminal 3.
If OK, check harness for short to ground and short to power.
4. Reinstall any part removed.
OK or NG
OK >> GO TO 3
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3.CHECK DTC
Perform Self-diagnosis Code confirmation procedure,AT - 4 2 1 , "
TORQUE CONVERTER CLUTCH SOLENOID
VA LV E".
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector. Resistance : 5 - 20W
SCIA0731E
Continuity should exist.
SCIA0732E

BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POW-
ER SOURCE)
AT-427
[ALL]
D
E
F
G
H
I
J
K
L
MA
B
AT
ON BOARD DIAGNOSIS LOGIC
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE
After the repair, perform the following procedure to confirm the malfunction is eliminated.
With CONSULT-II
1. Start engine.
2. Select “SELF-DIAG RESULTS” mode for A/T with CONSULT-II.
3. Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than 10 km/h
(6 MPH), throttle opening greater than 1/8 of the full open posi-
tion, engine speed higher than 450 rpm and driving for more
than 10 minutes.
Without CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than 10 km/h
(6 MPH), throttle opening greater than 1/8 of the full open posi-
tion, engine speed higher than 450 rpm and driving for more
than 10 minutes.
3. Perform self-diagnosis.
Refer to “SELF-DIAGNOSTIC PROCEDURE (Without CON-
SULT-II)”,AT- 4 2 7 , "
SELF-DIAGNOSIS CODE CONFIRMATION
PROCEDURE".
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: BATT/FLUID TEMP SEN
TCM receives an excessively low or high
voltage from the sensor.
lHarness or connectors
(The sensor circuit is open or shorted.)
lA/T fluid temperature sensor
: 8th judgement flicker
SAT014K
SCIA0702E

BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POW-
ER SOURCE)
AT-431
[ALL]
D
E
F
G
H
I
J
K
L
MA
B
AT
5.CHECK DTC
Perform Self-diagnosis Code confirmation procedure,AT-427, "
SELF-DIAGNOSIS CODE CONFIRMATION
PROCEDURE".
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
Component InspectionECS004UB
A/T FLUID TEMPERATURE SENSOR
lFor removal, refer toAT-453, "Installation".
lCheck resistance between two terminals while changing temper-
ature as shown at left.
Temperature°C(°F) Resistance
20 (68) Approximately 2.5 kW
80 (176) Approximately 0.3 kW
SAT298F

AT-432
[ALL]
ENGINE SPEED SIGNAL
ENGINE SPEED SIGNAL
PFP:24825
DescriptionECS004UC
The engine speed signal is sent from the ECM to the TCM.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSIS LOGIC
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE
After the repair, perform the following procedure to confirm the malfunction is eliminated.
With CONSULT-II
1. Start engine.
2. Select “SELF-DIAG RESULTS” mode for A/T with CONSULT-II.
3. Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than 10 km/h
(6 MPH), throttle opening greater than 1/8 of the full throttle
position and driving for more than 10 seconds.
Without CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions:
Selector lever in “D” position, vehicle speed higher than 10 km/h
(6 MPH), throttle opening greater than 1/8 of the full throttle
position and driving for more than 10 seconds.
3. Perform self-diagnosis.
Refer to “SELF-DIAGNOSTIC PROCEDURE (Without CON-
SULT-II)”,AT-432, "
ENGINE SPEED SIGNAL".
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
39 L/OREngine speed
signalandRefer toEC-79, "
ECM INSPECTION TABLE"
“ECM INSPECTION TABLE”.—
Diagnostic trouble code Malfunction is detected when... Check item (Possible cause)
: ENGINE SPEED SIG
TCM does not receive the proper voltage
signal from ECM.
lHarness or connectors
(The sensor circuit is open or shorted.)
: 9th judgement flicker
SAT014K
SCIA0703E

ENGINE SPEED SIGNAL
AT-435
[ALL]
D
E
F
G
H
I
J
K
L
MA
B
AT
4.CHECK DTC
Perform Self-diagnosis Code confirmation procedure,AT-432, "
ENGINE SPEED SIGNAL".
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

AT-436
[ALL]
LINE PRESSURE SOLENOID VALVE
LINE PRESSURE SOLENOID VALVE
PFP:31940
DescriptionECS004UF
The line pressure solenoid valve regulates the oil pump discharge
pressure to suit the driving condition in response to a signal sent
from the TCM.
The line pressure duty cycle value is not consistent when the
closed throttle position switch is “ON”. To confirm the line
pressure duty cycle at low pressure, the accelerator (throttle)
should be open until the closed throttle position switch is
“OFF”.
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
NOTE:
The line pressure duty cycle value is not consistent when the closed throttle position switch is “ON”. To confirm the line pressure duty
cycle at low pressure, the accelerator (throttle) should be open until the closed throttle position switch is “OFF”.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSIS LOGIC
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURE
After the repair, perform the following procedure to confirm the malfunction is eliminated.
SCIA0735E
Monitor item Condition Specification
Line pressure solenoid valve dutySmall throttle opening
(Low line pressure)
¯
Large throttle opening
(High line pressure)Approximately 24%
¯
Approximately 95%
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
1R/WLine pressure
solenoid valveWhen releasing accelerator pedal
after warming up engine.1.5 - 3.0V
When depressing accelerator pedal
fully after warming up engine.0V
2P/BLine pressure
solenoid valve
(with dropping
resistor)When releasing accelerator pedal
after warming up engine.5-14V
When depressing accelerator pedal
fully after warming up engine.0V
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: LINE PRESSURE S/V
TCM detects an improper voltage drop
when it tries to operate the solenoid valve.
lHarness or connectors
(The solenoid circuit is open or shorted.)
lLine pressure solenoid valve
: 10th judgement flicker

AT-440
[ALL]
LINE PRESSURE SOLENOID VALVE
3.CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Check resistance between terminal 4 and TCM harness connector terminal 1.
If OK, check harness for short to ground and short to power.
3. Reinstall any part removed.
OK or NG
OK >> GO TO 4
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
4.CHECK DTC
Perform Self-diagnosis Code confirmation procedure,AT-436, "
LINE PRESSURE SOLENOID VALVE".
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector. Resistance : Approx. 0W
SCIA0743E

CAN CAMMUNICATION LINE
AT-443
[ALL]
D
E
F
G
H
I
J
K
L
MA
B
AT
CAN CAMMUNICATION LINEPFP:31940
DescriptionECS004UJ
CAN (Control Area Network) is a serial communication line for real time application. It is an on-vehicle multi-
plex communication line with high data communication speed and excellent error detection ability. Many elec-
tonic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
*: This terminal is connected to the ECM.
On Board Diagnosis LogicECS004UK
** : A/T COMM LINE means CAN communication line.
Self-Diagnosis Code Confirmation ProcedureECS0 04 UL
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Wait at least 6 seconds or start engine and wait for at least 6
seconds.
WITHOUT CONSULT-II
1. Turn ignition switch “ON”.
2. Wait at least 6 seconds or start engine and wait at least 6 sec-
onds.
3. Perform self-diagnosis.
Refer to SELF-DIAGNOSTIC PROCEDURE (NO TOOLS),
AT-273, "
Diagnostic Procedure Without CONSULT-II".
Te r m i -
nal No.Wire color Item ConditionJudgement
standard
(Approx.)
5 B/W CAN (H) — — —
6L/RCAN(L) — — —
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: A/T COMM LINE**
The ECM-AT communication line is open
or shorted.
lHarness or connectors
(The solenoid circuit is open or shorted.)
lLine pressure solenoid valve
: 11th judgement flicker
SAT014K
SAT599J

SERVICE DATA AND SPECIFICATIONS (SDS)
AT-563
[ALL]
D
E
F
G
H
I
J
K
L
MA
B
AT
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsECS004MI
Shift ScheduleECS004MJ
VEHICLE SPEED WHEN SHIFTING GEARS THROTTLE POSITION
VEHICLE SPEED WHEN PERFORMING AND RELEASING LOCK-UP
Unit: km/h (MPH)
NOTE:
lLock-up vehicle speed indicates the speed in D4position.
lPerform lock-up inspection after warming up engine.
lLock-up vehicle speed may vary depending on the driving conditions and circumstances.
Stall RevolutionECS004MK
Line PressureECS004ML
EngineQR20DE
Automatic transaxle model RE4F04B(4WD)
Automatic transaxle assembly Model code number 85X23
Transaxle gear ratio1st 2.785
2nd 1.545
3rd 1.000
4th 0.694
Reverse 2.272
Final drive 3.789
Recommended fluid Gemuine Nissan ATF or equiualent,*1
Fluid capacity (Imp qt)9.4 (8-1/4)
Throttle posi-
tionShift patternVehicle speed km/h (MPH)
D
1®D2D2®D3D3®D4D4®D3D3®D2D2®D1
Full throttleComfort53 - 61
(33 - 38)99 - 107
(62 - 67)156 - 164
(97 - 102)152 - 160
(94 - 99)89 - 97
(53 - 60)41 - 49
(25 - 30)
Auto power53 - 61
(33 - 38)99 - 107
(62 - 67)156 - 164
(97 - 102)152 - 160
(94 - 99)89 - 97
(55 - 60)41 - 49
(25 - 30)
Half throttleComfort34 - 42
(21 - 26)64 - 72
(40 - 45)124 - 138
(77 - 82)82 - 90
(51 - 56)41 - 49
(25 - 30)5-13
(3 - 8)
Auto power38 - 46
(24 - 29)70 - 78
(44 - 48)124 - 132
(77 - 82)81 - 89
(50 - 55)44 - 53
(27 - 33)5-13
(3 - 8)
Model code No. 85X23
Vehicle speed Throttle position 1/8 58 - 66 (36 - 41)
EngineStall revolution
rpm
QR20DE 2,450 - 2,950
Engine speed
rpmLine pressure kPa (kg/cm2,psi)
D, 2 and 1 positions R position
Idle 500 (5.1, 73) 772 (7.9, 113)
Stall 1,233 (12.6, 179) 1,918 (19.6, 278)

AT-564
[ALL]
SERVICE DATA AND SPECIFICATIONS (SDS)
Control Valves
ECS004MM
CONTROL VALVE AND PLUG RETURN SPRINGS
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
AccumulatorECS0 04 MN
O-RING
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
RETURN SPRING
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information.
Clutch and BrakesECS004MO
REVERSE CLUTCH
PartsItem
Part No.* Free length Outer diameter
Upper body23 Pilot valve spring 31742-3AX03 38.98 (1.535) 8.9 (0.350)
7 1-2 accumulator valve spring 31742-3AX00 20.5 (0.807) 6.95 (0.274)
28 1-2 accumulator piston spring 31742-85X02 55.60 (2.189) 19.6 (0.772)
33 1st reducing valve spring 31742-80X05 27.0 (1.063) 7.0 (0.276)
35 3-2 timing valve spring 31736-01X00 23.0 (0.906) 6.65 (0.262)
18 Overrun clutch reducing valve spring 31742-80X15 37.5 (1.476) 6.9 (0.272)
16 Torque converter relief valve spring 31742-80X07 31.0 (1.220) 9.0 (0.354)
11 Torque converter clutch control valve 31742-85X00 56.98 (2.243) 6.5 (0.256)
3 Cooler check valve spring 31742-85X01 29.4 (1.157) 6.0 (0.236)
Lower body15 Pressure regulator valve spring 31742-80X13 45.0 (1.772) 15.0 (0.591)
20 Overrun clutch control valve spring 31762-80X00 21.7 (0.854) 7.0 (0.276)
24 Accumulator control valve spring 31742-80X02 22.0 (0.866) 6.5 (0.256)
29 Shift valve A spring 31762-80X00 21.7 (0.854) 7.0 (0.276)
32 Shuttle valve spring 31762-41X04 51.0 (2.008) 5.65 (0.222)
12 Shift valve B spring 31762-80X00 21.7 (0.854) 7.0 (0.276)
7
Pressure modifier valve spring31742-41X15 30.5 (1.201) 9.8 (0.386)
3 31742-80X16 32.0 (1.260) 6.9 (0.272)
— Oil cooler relief valve spring 31872-31X00 17.02 (0.670) 8.0 (0.315)
Accumulator Part No.*Inner diameter
(Small)Part No.*Inner diameter
(Large)
Servo release accumulator 31526 41X03 26.9 (1.059) 31526 41X02 44.2 (1.740)
N-D accumulator 31526 31X08 34.6 (1.362) 31672 21X00 39.4 (1.551)
Accumulator Part number* Free length Outer diameter
Servo release accumulator 31605-80X00 52.5 (2.067) 20.1 (0.791)
N-D accumulator 31605-31X15 43.5 (1.713) 28.0 (1.102)
Model code number85X23
Number of drive plates2
Number of driven plates2
Drive plate thickness mm (in)Standard 1.6 (0.063)
Allowable limit 1.4 (0.055)
Driven plate thickness mm (in) Standard 1.8 (0.071)