2005 NISSAN X-TRAIL AUTOMATIC

OVERALL SYSTEM
AT-39
D
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F
G
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I
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MA
B
AT

Control ValveECS004QG
FUNCTION OF CONTROL VALVES
Valve name Function
Pressure regulator valve, plug and sleeve
plugRegulates oil discharged from the oil pump to provide optimum line pressure for all driv-
ing conditions.
Pressure modifier valve and sleeve Used as a signal supplementary valve to the pressure regulator valve. Regulates pres-
sure-modifier pressure (signal pressure) which controls optimum line pressure for all
driving conditions.
Pilot valve Regulates line pressure to maintain a constant pilot pressure level which controls lock-up
mechanism, overrun clutch, shift timing.
Accumulator control valve Regulates accumulator back-pressure to pressure suited to driving conditions.
Manual valve Directs line pressure to oil circuits corresponding to select positions.
Hydraulic pressure drains when the shift lever is in Neutral.
Shift valve A Simultaneously switches three oil circuits using output pressure of shift solenoid valve A
to meet driving conditions (vehicle speed, throttle opening, etc.).
Provides automatic downshifting and upshifting (1st → 2nd → 3rd → 4th gears/4th →
3rd → 2nd → 1st gears) in combination with shift valve B.
Shift valve B Simultaneously switches two oil circuits using output pressure of shift solenoid valve B in
relation to driving conditions (vehicle speed, throttle opening, etc.).
Provides automatic downshifting and upshifting (1st → 2nd → 3rd → 4th gears/4th →
3rd → 2nd → 1st gears) in combination with shift valve A.
Overrun clutch control valve Switches hydraulic circuits to prevent engagement of the overrun clutch simultaneously
with application of the brake band in D
4 . (Interlocking occurs if the overrun clutch
engages during D
4 .)
1st reducing valve Reduces low & reverse brake pressure to dampen engine-brake shock when downshift-
ing from the 1st position 1
2 to 11 .
Overrun clutch reducing valve Reduces oil pressure directed to the overrun clutch and prevents engine-brake shock.
In the 1st and 2nd positions, line pressure acts on the overrun clutch reducing valve to
increase the pressure-regulating point, with resultant engine brake capability.
Torque converter relief valve Prevents an excessive rise in torque converter pressure.
Torque converter clutch control valve, plug
and sleeveActivates or inactivates the lock-up function.
Also provides smooth lock-up through transient application and release of the lock-up
system.
1-2 accumulator valve and piston Lessens the shock find when the 2nd gear band servo contracts, and provides smooth
shifting.
3-2 timing valve Switches the pace that oil pressure is released depending on vehicle speed; maximizes
the high clutch release timing, and allows for soft downshifting.
Shuttle valve Determines if the overrun clutch solenoid valve should control the 3-2 timing valve or the
overrun clutch control valve and switches between the two.
Cooler check valve At low speeds and with a small load when a little heat is generated, saves the volume of
cooler flow, and stores the oil pressure for lock-up.

AT-40
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

[EURO-OBD]ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONPFP:00000
IntroductionECS004QH
The A/T system has two self-diagnostic systems.
The first is the emission-related on board diagnostic system (EURO-OBD) performed by the TCM in combina-
tion with the ECM. The malfunction is indicated by the MI (malfunction indicator) and is stored as a DTC in the
ECM memory but not the TCM memory.
The second is the TCM original self-diagnosis indicated by the O/D OFF indicator lamp. The malfunction is
stored in the TCM memory. The detected items are overlapped with EURO-OBD self-diagnostic items. For
detail, refer to AT- 4 5 , "
SELF-DIAGNOSTIC RESULT TEST MODE" .
EURO-OBD Function for A/T SystemECS004QI
The ECM provides emission-related on board diagnostic (EURO-OBD) functions for the A/T system. One
function is to receive a signal from the TCM used with EURO-OBD-related parts of the A/T system. The signal
is sent to the ECM when a malfunction occurs in the corresponding EURO-OBD-related part. The other func-
tion is to indicate a diagnostic result by means of the MI (malfunction indicator) on the instrument panel. Sen-
sors, switches and solenoid valves are used as sensing elements.
The MI automatically illuminates in One or Two Trip Detection Logic when a malfunction is sensed in relation
to A/T system parts.
One or Two Trip Detection Logic of EURO-OBDECS004QJ
ONE TRIP DETECTION LOGIC
If a malfunction is sensed during the first test drive, the MI will illuminate and the malfunction will be stored in
the ECM memory as a DTC. The TCM is not provided with such a memory function.
TWO TRIP DETECTION LOGIC
When a malfunction is sensed during the first test drive, it is stored in the ECM memory as a 1st trip DTC
(diagnostic trouble code) or 1st trip freeze frame data. At this point, the MI will not illuminate. — First Trip
If the same malfunction as that experienced during the first test drive is sensed during the second test drive,
the MI will illuminate. — Second Trip
A/T-related parts for which the MI illuminates during the first or second test drive are listed below.
The “trip” in the “One or Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation.
EURO-OBD Diagnostic Trouble Code (DTC)ECS004QK
HOW TO READ DTC AND 1ST TRIP DTC
DTC and 1st trip DTC can be read by the following methods.
( With CONSULT-II or GST) CONSULT-II or GST (Generic Scan Tool) Examples: P0705, P0710,
P0720, P0725, etc.
These DTCs are prescribed by SAE J2012.
(CONSULT-II also displays the malfunctioning component or system.)

1st trip DTC No. is the same as DTC No.

Output of the diagnostic trouble code indicates that the indicated circuit has a malfunction. How-
ever, in case of the Mode II and GST they do not indicate whether the malfunction is still occurring
or occurred in the past and returned to normal.
CONSULT-II can identify them as shown below. Therefore, using CONSULT-II (if available) is rec-
ommended.
ItemsMI
One trip detection Two trip detection
Shift solenoid valve A — DTC: P0750 X
Shift solenoid valve B — DTC: P0755 X
Throttle position sensor — DTC: P1705 X
Except aboveX

AT-66
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION

8. Move selector lever to N position.
9. Cool off ATF.

Run engine at idle for at least one minute.
10. Repeat steps 5 through 9 with selector lever in 2, 1 and R posi-
tions.
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 in AT- 6 1 , "
Work Flow"
(EURO-OBD).
NOTE:
Stall revolution is too high in D, 2 or 1 position:

Slippage occurs in 1st gear but not in 2nd and 3rd gears...... Low one-way clutch slippage

Slippage 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:

Engine brake does not function in 1 position...... Low & reverse brake slippage

Engine brake functions in 1 position...... Reverse clutch slippage
Stall revolution within specifications:

Vehicle 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.

Slippage occurs in 3rd and 4th gears in D position...... High clutch slippage

Slippage occurs in 2nd and 4th gear in D position...... Brake band slippage

Engine 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...... Overrun clutch slippage
Stall revolution less than specifications:

Poor acceleration during starts...... One-way clutch slippage in torque converter
SAT771B

AT-258
[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 in AT- 2 5 5 , "
Work
Flow" (EXCEPT FOR EURO-OBD).
NOTE:
Stall revolution is too high in D, 2 or 1 position:

Slippage occurs in 1st gear but not in 2nd and 3rd gears...... Low one-way clutch slippage

Slippage 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:

Engine brake does not function in 1 position...... Low & reverse brake slippage

Engine brake functions in 1 position...... Reverse clutch slippage
Stall revolution within specifications:

Vehicle 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.

Slippage occurs in 3rd and 4th gears in D position...... High clutch slippage

Slippage occurs in 2nd and 4th gear in D position...... Brake band slippage

Engine 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...... Overrun clutch slippage
Stall revolution less than specifications:

Poor acceleration during starts...... One-way clutch slippage in torque converter

AT-530
[ALL]
SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsECS00CXK
*1: Refer to MA-17, "Fluids and Lubricants" .
Shift ScheduleECS00CXL
VEHICLE SPEED WHEN SHIFTING GEARS AND THROTTLE POSITION
For 85X23 model
For 85X64 model
VEHICLE SPEED WHEN PERFORMING LOCK-UP
Unit: km/h (MPH)
NOTE:

Lock-up vehicle speed indicates the speed in D4 position.

Perform lock-up inspection after warming up engine.

Lock-up vehicle speed may vary depending on the driving conditions and circumstances. EngineQR20DE QR25DE
Automatic transaxle model RE4F04B (4WD)
Automatic transaxle assembly Model code number 85X23 85X64
Transaxle gear ratio1st 2.785
2nd 1.545
3rd 1.000
4th 0.694
Reverse 2.272
Final drive 4.425 4.087
Recommended fluid Genuine Nissan ATF or equiualent*1
Fluid capacity (Imp qt)8.5 (7-1/2)
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)
Throttle posi-
tionShift patternVehicle speed km/h (MPH)
D
1 → D2D2 → D3D3 → D4D4 → D3D3 → D2D2 → D1
Full throttleComfort57 - 65
(35 - 40)107 - 115
(66 - 71)167 - 175
(104 - 109)163 - 171
(101 - 106)97 - 105
(60 - 65)41 - 49
(25 - 30)
Auto power57 - 65
(35 - 40)107 - 115
(66 - 71)167 - 175
(104 - 109)163 - 171
(101 - 106)97 - 105
(60 - 65)41 - 49
(25 - 30)
Half throttleComfort36 - 44
(22 - 27)71 - 79
(44 - 49)131 - 139
(81 - 86)77 - 85
(48 - 53)38 - 46
(23 - 28)5 - 13
(3 - 8)
Auto power42 - 50
(26 - 31)79 - 87
(49 - 54)131 - 139
(81 - 86)77 - 85
(48 - 53)45 - 53
(28 - 33)5 - 13
(3 - 8)
Model code No. 85X23 85X64
Vehicle speed Throttle position 1/8 58 - 66 (36 - 41) 61 - 69 (38 - 43)

TF-12
ALL MODE 4X4 SYSTEM

4WD MODE SWITCH
AUTO Mode

Electronic control allows optimal distribution of torque to front/rear wheels to match road conditions.

4WD mode makes possible stable driving, with no wheel spin, on snowy roads or other slippery surfaces.

On roads which do not require 4WD, AUTO mode contributes to improved fuel economy by driving in con-
ditions close to front-wheel drive.

Sensor inputs determine the vehicle's turning condition, and tight cornering/braking are controlled by dis-
tributing optimum torque to rear wheels.
LOCK Mode

Front/rear wheel torque distribution is fixed, ensuring stable driving when climbing slopes.

Vehicle will switch automatically to AUTO mode if vehicle speed increases. If vehicle speed then
decreases, the vehicle automatically returns to direct 4-wheel driving conditions.

LOCK mode will change to AUTO mode automatically, when the vehicle speed exceeds approx. 30 km/h
(19 MPH). The LOCK indicator light keeps illuminating.
NOTE:
If there is a significant difference in pressure or wear between tires, full vehicle performance is not available.
LOCK mode may be prohibited, or speeds at which LOCK mode is enabled may be restricted detecting tire
conditions.
2WD Mode
Vehicle is in front-wheel drive.
NOTE:

If front wheels are slipping in 2WD mode, do not switch to AUTO or LOCK. This can cause difficulties for
the system.

Even if the 4WD mode switch is in 2WD mode, the 4WD control unit occasionally automatically change to
AUTO mode depending on the driving condition (For example; Depressing the acceleration firmly). This is
not malfunction. However, 4WD indicator lamp dose not illuminate.
4WD INDICATOR LAMP AND LOCK INDICATOR LAMP
The following is the indications of indicator lamp.
4WD WARNING LAMP
Turns ON when there is a malfunction in 4WD system. It indicates that the vehicle is in fail-safe mode and
change to front-wheel drive or shifting driving force-4WD (Rear-wheels still have some driving torque).
Also turns ON when ignition switch is turned ON, for purpose of lamp check. Turns OFF approximately for 1
seconds after the engine starts if system is normal.
4WD Warning Lamp Indication
Condition 4WD indicator lamp LOCK indicator lamp
AUTO mode ON OFF
LOCK mode ON ON
2WD mode OFF OFF
Lamp check Turns ON for approx. 1 second when ignition switch is turned ON.
SDIA2298E
Condition 4WD warning lamp
Lamp checkTurns ON when ignition switch is turned ON. Turns OFF
approx. 1 seconds after engine start.
4WD system malfunctionON
Protection function is activated due to heavy load to electric con-
trolled coupling. (4WD system is not malfunctioning and 4WD system
changes to 2WD mode.)Rapid flashing: 2 times/second
(Flashing in approx. 1 minute and then turning OFF.)

BRC-52
[ESP/TCS/ABS]
ON-VEHICLE SERVICE

ON-VEHICLE SERVICEPFP:00000
Adjustment of Steering Angle Sensor Neutral PositionEFS0019R
In case of doing work that applies to the list below, make sure to adjust neutral position of steering angle sen-
sor before running vehicle.
×: Required
–: Not required
CAUTION:
To adjust neutral position of steering angle sensor, make sure to use CONSULT-II.
(Adjustment cannot be done without CONSULT-II.)
1. Stop vehicle with front wheels in straight-ahead position.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector on vehicle, and turn ignition
switch ON (do not start engine).
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
3. Touch “ABS”, “WORK SUPPORT” and “ST ANGLE SENSOR ADJUSTMENT” on CONSULT-II screen in
this order. Refer to BRC-79, "
CONSULT-II BASIC OPERATION PROCEDURE" .
4. Touch “START”.
CAUTION:
Do not touch steering wheel while adjusting steering angle
sensor.
5. After approximately 10 seconds, touch “END”. (After approxi-
mately 60 seconds, it ends automatically.)
6. Turn ignition switch OFF, then turn it ON again.
CAUTION:
Be sure to carry out above operation.
7. Run vehicle with front wheels in straight-ahead position, then
stop.
8. Select “DATA MONITOR”, “SELECTION FROM MENU”, and “STR ANGLE SIG” on CONSULT-II screen.
Then make sure “STR ANGLE SIG” is within 0 ±3.5 deg. If value is more than specification, repeat steps 1
to 7.
9. Erase memory of ESP/TCS/ABS control unit and ECM.
10. Turn ignition switch OFF.
Situation Adjustment of Steering Angle Sensor Neutral Position
Removing/Installing ESP/TCS/ABS control unit−
Replacing ESP/TCS/ABS control unit−
Removing/Installing steering angle sensor×
Removing/Installing steering components×
Removing/Installing suspension components×
Change tyre to new ones–
Tyre rotation–
Adjusting wheel alignment×
SFIA0371E

ACS-1
AUTO CRUISE CONTROL SYSTEM
K ELECTRICAL
CONTENTS
C
D
E
F
G
H
I
J
L
M
SECTION ACS
A
B
ACS

AUTO CRUISE CONTROL SYSTEM
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ..... 2
Description ............................................................... 2