2005 NISSAN X-TRAIL warning

CL-2
PRECAUTIONS

PRECAUTIONSPFP:00001
Service Notice or PrecautionsECS004JW

Recommended clutch fluid is brake fluid “DOT 3" or “DOT 4". Refer to MA-17, "Fluids and Lubricants" .

Do not reuse drained clutch fluid.

Be careful not to splash clutch fluid on painted areas.

When removing and installing clutch piping, use Tool.

Use new clutch fluid to clean or wash all parts of master cylinder
and operating cylinder.

Do not use mineral oils such as gasoline or kerosene. It will cor-
rode the rubber parts of the hydraulic system.
WARNING:
After cleaning clutch disc, clean it with a dust collector. Do not
use compressed air.Tool number : GG94310000 or Commercial equivalent
PCIB0272E

AT-8
PRECAUTIONS

PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
ECS004Q0
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for On Board Diagnostic (EURO-OBD) System of A/T and Engine —
Euro-OBD —
ECS004Q1
The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver of
a malfunction causing emission deterioration.
CAUTION:

Be sure to turn the ignition switch “OFF” and disconnect the negative battery terminal before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves,
etc. will cause the MI to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to an open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)

Be sure to route and secure the harnesses properly after work. Interference of the harness with a
bracket, etc. may cause the MI to light up due to a short circuit.

Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to a malfunction of the EGR system or fuel injection system, etc.

Be sure to erase the unnecessary malfunction information (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
Precautions for Trouble DiagnosisECS004VN
CAN SYSTEM

Do not apply voltage of 7.0V or higher to the measurement terminals.

Use the tester with its open terminal voltage being 7.0V or less.
Precautions for Harness RepairECS004VO
CAN SYSTEM

Solder the repaired parts, and wrap with tape. [Frays of twisted
line must be within 110 mm (4.33 in)]
PKIA0306E

TF-1
TRANSFER
D DRIVELINE/AXLE
CONTENTS
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SECTION TF
A
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TF

TRANSFER
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions .............................................................. 3
Service Notice .......................................................... 4
Wiring Diagrams and Trouble Diagnosis .................. 4
PREPARATION ........................................................... 5
Special Service Tools ............................................... 5
Commercial Service Tools ........................................ 8
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 9
NVH Troubleshooting Chart ..................................... 9
TRANSFER OIL ........................................................ 10
Replacement .......................................................... 10
DRAINING ........................................................... 10
FILLING ............................................................... 10
Inspection ............................................................... 10
OIL LEAKAGE AND OIL LEVEL ......................... 10
ALL MODE 4X4 SYSTEM .........................................11
Power Transfer Diagram ......................................... 11
System Description ................................................. 11
ELECTRIC CONTROLLED COUPLING .............. 11
4WD CONTROL UNIT ......................................... 11
4WD MODE SWITCH ......................................... 12
4WD INDICATOR LAMP AND LOCK INDICATOR
LAMP .................................................................. 12
4WD WARNING LAMP ....................................... 12
System Diagram ..................................................... 13
COMPONENTS FUNCTION DESCRIPTION ..... 14
CAN Communication .............................................. 14
SYSTEM DESCRIPTION .................................... 14
CAN Communication Unit ...................................... 14
TYPE 1/TYPE 2 .................................................. 15
TYPE 3 ................................................................ 16
TYPE 4/TYPE 5 .................................................. 17
TYPE 6 ................................................................ 18
TROUBLE DIAGNOSIS ............................................ 20
Fail-Safe Function .................................................. 20
How to Perform Trouble Diagnosis ........................ 20BASIC CONCEPT ............................................... 20
Location of Electrical Parts ..................................... 21
Circuit Diagram ....................................................... 22
Wiring Diagram — 4WD — ..................................... 23
LHD MODELS ..................................................... 23
RHD MODELS .................................................... 26
Trouble Diagnosis Chart for Symptoms .................. 29
4WD Control Unit Input/Output Signal Reference
Values ..................................................................... 30
4WD CONTROL UNIT INSPECTION TABLE ..... 30
CONSULT-II Function (ALL MODE AWD/4WD) ..... 31
FUNCTION .......................................................... 31
CONSULT-II SETTING PROCEDURE ................ 31
SELF-DIAG RESULT MODE ............................... 32
DATA MONITOR MODE ...................................... 33
ACTIVE TEST MODE ......................................... 34
4WD CONTROL UNIT PART NUMBER .............. 34
TROUBLE DIAGNOSIS FOR SYSTEM .................... 35
Power Supply Circuit for 4WD Control Unit ............ 35
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 35
DIAGNOSTIC PROCEDURE .............................. 35
4WD Control Unit .................................................... 36
DIAGNOSTIC PROCEDURE .............................. 36
ABS System ........................................................... 36
DIAGNOSTIC PROCEDURE .............................. 36
4WD Solenoid ......................................................... 37
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 37
DIAGNOSTIC PROCEDURE .............................. 37
COMPONENT INSPECTION .............................. 39
4WD Actuator Relay ............................................... 40
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 40
DIAGNOSTIC PROCEDURE .............................. 40
4WD Mode Switch .................................................. 42
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 42
DIAGNOSTIC PROCEDURE .............................. 42
COMPONENT INSPECTION .............................. 44

TF-2 Engine Control Signal ............................................. 44
DIAGNOSTIC PROCEDURE .............................. 44
CAN Communication Line ...................................... 45
DIAGNOSTIC PROCEDURE .............................. 45
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 46
4WD Indicator Lamp and LOCK Indicator Lamp Do
Not Turn ON for Approx. 1 Second When The Igni-
tion Switch Is Turned to ON .................................... 46
DIAGNOSTIC PROCEDURE .............................. 46
4WD Warning Lamp Does Not Turn ON When The
Ignition Switch Is Turned to ON .............................. 47
DIAGNOSTIC PROCEDURE .............................. 47
4WD Warning Lamp Does Not Turn OFF Several
Seconds after Engine Started ................................. 48
DIAGNOSTIC PROCEDURE .............................. 48
4WD Mode Cannot Be Switched after Engine Is
Started .................................................................... 49
DIAGNOSTIC PROCEDURE .............................. 49
Heavy Tight-Corner Braking Symptom Occurs
When the Vehicle Is Driven in AUTO Mode and the
Steering Wheel Is Turned Fully to Either Side after
the Engine Is Started .............................................. 50
DIAGNOSTIC PROCEDURE .............................. 50
Vehicle Does Not Enter 4WD Mode Even Though
4WD Warning Lamp Turned to OFF ....................... 51
DIAGNOSTIC PROCEDURE .............................. 52
While Driving, 4WD Warning Lamp Flashes Rapidly
(When Flashing in Approx. 1 Minute and Then Turn-
ing OFF) ................................................................. 52
While Driving, 4WD Warning Lamp Flashes Slowly
(When Continuing to Flash until Turning Ignition
Switch OFF) ............................................................ 53
DIAGNOSTIC PROCEDURE .............................. 534WD CONTROL UNIT ............................................... 54
Removal and Installation ......................................... 54
REMOVAL ............................................................ 54
INSTALLATION .................................................... 54
SIDE OIL SEAL ......................................................... 55
Removal and Installation ......................................... 55
REMOVAL ............................................................ 55
INSTALLATION .................................................... 55
AIR BREATHER HOSE ............................................. 56
Components ............................................................ 56
Removal and Installation ......................................... 56
TRANSFER ASSEMBLY ........................................... 57
Removal and Installation ......................................... 57
COMPONENTS ................................................... 57
REMOVAL ............................................................ 57
INSTALLATION .................................................... 58
Disassembly and Assembly .................................... 59
COMPONENTS ................................................... 59
ASSEMBLY INSPECTION ................................... 60
DISASSEMBLY .................................................... 64
INSPECTION AFTER DISASSEMBLY ................ 68
SELECTING ADJUSTING SHIMS ....................... 69
ASSEMBLY .......................................................... 70
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 76
General Specifications ............................................ 76
Inspection and Adjustment ...................................... 76
PRELOAD TORQUE BEFORE DISASSEMBLY ... 76
PRELOAD TORQUE AFTER DISASSEMBLY
AND REASSEMBLY ............................................ 76
BACKLASH .......................................................... 76
COMPANION FLANGE RUNOUT ....................... 76
SELECTIVE PARTS ............................................ 76

PRECAUTIONS
TF-3
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EDS001W1
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
PrecautionsEDS001V6

Before connecting or disconnecting the 4WD control unit
harness connector, turn ignition switch “OFF” and discon-
nect battery ground cable. Because battery voltage is
applied to 4WD control unit even if ignition switch is turned
“OFF”.

When connecting or disconnecting pin connectors into or
from 4WD control unit, take care not to damage pin termi-
nals (bend or break).
When connecting pin connectors, make sure that there are
no bends or breaks on 4WD control unit pin terminal.

Before replacing 4WD control unit, perform 4WD control
unit input/output signal inspection and make sure whether
4WD control unit functions properly or not. Refer to TF-30,
"4WD Control Unit Input/Output Signal Reference Values" .
SEF289H
SEF291H
SDIA1848E

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.)

ALL MODE 4X4 SYSTEM
TF-13
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System DiagramEDS001VC
Large difference in diameter of front/rear tiresSlow flashing: 1 time/2 seconds
(Continuing to flash until turning ignition switch OFF)
Other than above (system normal) OFFCondition 4WD warning lamp
SDIA1866E

TF-14
ALL MODE 4X4 SYSTEM

COMPONENTS FUNCTION DESCRIPTION
CAN CommunicationEDS0027K
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic 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.
CAN Communication UnitEDS002XA
Component parts Function
4WD control unit

Controls driving force distribution by signals from each sensor and switch from front wheel driving
mode (100:0) to 4WD mode (50:50).

2WD mode is available by fail-safe function if malfunction is detected in electrical system.
Wheel sensors Detects wheel speed.
4WD solenoid Controls electric controlled coupling by operation signal from 4WD control unit.
Electric controlled coupling Transmits driving force to rear final drive.
4WD mode switch Able to select from 2WD, AUTO or LOCK mode.
4WD warning lamp

Illuminates if malfunction is detected in electrical system of 4WD system.

There is 1 blink in 2 seconds if rotation difference of front wheels and rear wheels is large.

There are 2 blinks in 1 second if load is still applied to driving parts.
4WD indicator lamp Indicate operation with optimal distribution of torque to front/rear wheels.
LOCK indicator lamp Indicate that 4WD system is under direct 4-wheel driving mode.
ABS actuator and electric unit
(control unit) (without ESP) or
ESP/TCS/ABS control unit (with
ESP)Transmits the following signals via CAN communication to 4WD control unit.

Vehicle speed signal

Stop lamp switch signal (brake signal)
ECMTransmits the following signals via CAN communication to 4WD control unit.

Accelerator pedal position signal

Engine speed signal
Unified meter control unit Transmits conditions of parking brake switch via CAN communication to 4WD control unit.
Body typeWagon
Axle4WD
Engine YD22DDTi QR20DE/QR25DE YD22DDTi QR25DE
Transmission M/T A/T M/T A/T
Brake control ABS ESP
CAN system type 123456