2001 NISSAN X-TRAIL service indicator

TROUBLE DIAGNOSIS
EC-805
[QR20(WITH EURO-OBD)]
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Basic InspectionEBS00MSU
1.INSPECTION START
1. Check service records for any recent repairs that may indicate a related incident, or a current need for
scheduled maintenance.
2. Open engine hood and check the following:
–Harness connectors for improper connections
–Wiring harness for improper connections, pinches and cut
–Vacuum hoses for splits, kinks and improper connections
–Hoses and ducts for leaks
–Air cleaner clogging
–Gasket
3. Confirm that electrical or mechanical loads are not applied.
–Headlamp switch is OFF.
–Air conditioner switch is OFF.
–Rear window defogger switch is OFF.
–Steering wheel is in the straight-ahead position, etc.
4. Start engine and warm it up until engine coolant temperature
indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.
5. Run engine at about 2,000 rpm for about 2 minutes under no-
load.
6. Make sure that no DTC is displayed with CONSULT-II or GST.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding “Diagnostic Procedure”.
>> GO TO 3
SEF983U
SEF976U
SEF977U

PRECAUTIONS
EC-1121
[QR20(WITHOUT EURO-OBD)]
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EBS00NBS
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 harness connec-
tors.
On Board Diagnostic (OBD) System of Engine and A/TEBS00N39
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 the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
●Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-68, "
HAR-
NESS CONNECTOR" .
●Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MI to light up due to the 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 the malfunction of the fuel injection system, etc.
●Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
PrecautionEBS00N3A
●Always use a 12 volt battery as power source.
●Do not attempt to disconnect battery cables while engine is
running.
●Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative
battery terminal. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned off.
●Before removing parts, turn ignition switch OFF and then
disconnect battery ground cable.
SEF289H

EC-1152
[QR20(WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS
Basic Inspection
EBS00N3Z
1. INSPECTION START
1. Check service records for any recent repairs that may indicate a related incident, or a current need for
scheduled maintenance.
2. Open engine hood and check the following:
–Harness connectors for improper connections
–Wiring harness for improper connections, pinches and cut
–Vacuum hoses for splits, kinks and improper connections
–Hoses and ducts for leaks
–Air cleaner clogging
–Gasket
3. Confirm that electrical or mechanical loads are not applied.
–Headlamp switch is OFF.
–Air conditioner switch is OFF.
–Rear window defogger switch is OFF.
–Steering wheel is in the straight-ahead position, etc.
4. Start engine and warm it up until engine coolant temperature
indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.
5. Run engine at about 2,000 rpm for about 2 minutes under no-
load.
6. Make sure that no DTC is displayed with CONSULT-II or GST.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding “Diagnostic Procedure”.
>> GO TO 3.
SEF983U
SEF976U
SEF977U

FINAL DRIVE
MT-93
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5. Measure end play of side gears following procedure below.
Then select side gear thrust washer.
a. Upright the differential case so that its side gear to be measured
faces upward.
b. Place final drive adapter and dial indicator onto side gears.
c. Move side gears up and down to measure end play, and select
thrust washer so that it satisfies standard.
CAUTION:
●There should be no resistance and gears should rotate
freely.
●Place differential case upside down. Be sure to measure
end play for opposite side-gears likewise.
Thrust washer
CAUTION:
Only one thrust washer can be selected.
6. Using a pin punch, drive a lock pin into the pinion mate shaft.
CAUTION:
Do not reuse the lock pin.
7. Using a drift (special service tool), install differential side bearing
(transaxle case side).
SCIA1020E
End play standard value
: 0.1 - 0.2 mm (0.004 - 0.008 in)
SMT611A
Thickness Part number
0.75 mm (0.0295 in)
0.80 mm (0.0315 in)
0.85 mm (0.0335 in)
0.90 mm (0.0354 in)
0.95 mm (0.0374 in)38424 81X00
38424 81X01
38424 81X02
38424 81X03
38424 81X04
SCIA0908E
SCIA0910E

AT-1
AUTOMATIC TRANSAXLE
C TRANSMISSION/TRANSAXLE
CONTENTS
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SECTION
A
B
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AUTOMATIC TRANSAXLE
PRECAUTIONS .......................................................... 5
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 5
Precautions for On Board Diagnostic (EURO-OBD)
System of A/T and Engine — Euro-OBD — ............. 5
Precautions for Trouble Diagnosis ........................... 5
Precautions for Harness Repair ............................... 5
Precautions .............................................................. 6
Service Notice or Precautions .................................. 7
Wiring Diagrams and Trouble Diagnosis .................. 8
PREPARATION ........................................................... 9
Special Service Tools ............................................... 9
Commercial Service Tools ...................................... 12
A/T FLUID ................................................................. 13
Checking A/T Fluid ................................................. 13
Changing A/T Fluid ............................................. ... 13
OVERALL SYSTEM ................................................. 14
A/T Electrical Parts Location .................................. 14
Circuit Diagram ...................................................... 15
Cross-Sectional View ............................................. 16
Hydraulic Control Circuit ........................................ 17
Shift Mechanism ..................................................... 18
Control System ....................................................... 28
Control Mechanism ................................................ 29
Control Valve .......................................................... 34
EURO-OBD
TROUBLE DIAGNOSIS — INDEX ........................... 35
Alphabetical & P No. Index for DTC ....................... 35
ON BOARD DIAGNOSTIC SYSTEM DESCRIP-
TION .......................................................................... 37
Introduction ............................................................ 37
EURO-OBD Function for A/T System .................... 37
One or Two Trip Detection Logic of EURO-OBD ... 37
EURO-OBD Diagnostic Trouble Code (DTC) ......... 37
Malfunction Indicator lamp (MIL) ............................ 41
CONSULT-II ........................................................... 41
Diagnostic Procedure Without CONSULT-II ........... 50TROUBLE DIAGNOSIS — INTRODUCTION ........... 56
Introduction ............................................................. 56
Work Flow ............................................................... 60
TROUBLE DIAGNOSIS — BASIC INSPECTION .... 63
A/T Fluid Check ...................................................... 63
Stall Test ................................................................. 64
Line Pressure Test .................................................. 67
Road Test ............................................................... 68
TROUBLE DIAGNOSIS — GENERAL DESCRIP-
TION .......................................................................... 86
Symptom Chart ....................................................... 86
TCM Terminals and Reference Value ...................106
CAN COMMUNICATION .........................................109
System Description ...............................................109
DTC P0705 PARK/NEUTRAL POSITION (PNP)
SWITCH ..................................................................110
Description ............................................................110
Wiring Diagram — AT — PNP/SW .......................112
Diagnostic Procedure ...........................................113
Component Inspection ..........................................115
DTC P0710 A/T FLUID TEMPERATURE SENSOR
CIRCUIT ..................................................................116
Description ............................................................116
Wiring Diagram — AT — FTS ..............................118
Diagnostic Procedure ...........................................119
Component Inspection ..........................................121
DTC P0720 VEHICLE SPEED SENSOR·A/T (REV-
OLUTION SENSOR) ...............................................122
Description ............................................................122
Wiring Diagram — AT — VSSA/T ........................124
Diagnostic Procedure ...........................................125
DTC P0725 ENGINE SPEED SIGNAL ...................127
Description ............................................................127
Wiring Diagram — AT — ENGSS .........................128
Diagnostic Procedure ...........................................129
DTC P0731 A/T 1ST GEAR FUNCTION ...............
.131
Description ............................................................131
Wiring Diagram — AT — 1ST ...............................134
Diagnostic Procedure ...........................................135
Component Inspection ..........................................136

AT-3
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AT TION ........................................................................ 287
Symptom Chart .................................................... 287
TCM Terminals and Reference Value ................... 306
CAN COMMUNICATION ........................................ 309
System Description .............................................. 309
TROUBLE DIAGNOSES FOR SYMPTOMS .......... 310
Wiring Diagram — AT — NONDTC ...................... 310
O/D OFF Indicator Lamp Does Not Come On ..... 312
Engine Cannot Be Started In “P” and “N” Position . 314
In “P” Position, Vehicle Moves Forward Or Back-
ward When Pushed .............................................. 315
In “N” Position, Vehicle Moves ............................. 315
Large Shock. “N” → “R” Position .......................... 317
Vehicle Does Not Creep Backward In “R” Position . 318
Vehicle Does Not Creep Forward In “D”, “2” Or “1”
Position ................................................................ 321
Vehicle Cannot Be Started From D
1 ..................... 323
A/T Does Not Shift: D
1→ D2 Or Does Not Kick down:
D
4→ D2 ............................................................... 326
A/T Does Not Shift: D
2→ D3 ............................... 328
A/T Does Not Shift: D
3→ D4 ............................... 330
A/T Does Not Perform Lock-up ............................ 332
A/T Does Not Hold Lock-up Condition ................. 333
Lock-up Is Not Released ...................................... 335
Engine Speed Does Not Return To Idle (Light Brak-
ing D
4→ D3 ) ....................................................... 336
Vehicle Does Not Start From D
1 ........................... 338
A/T Does Not Shift: D
4→ D3 , When Overdrive Con-
trol Switch “ON” → “OFF” ..................................... 339
A/T Does Not Shift: D
3→ 22 , W h e n S e l e c t o r L e v e r
“D”→ “2” Position ................................................ 340
A/T Does Not Shift: 2
2→ 11 , W h e n S e l e c t o r L e v e r
“2” → “1” Position ................................................. 341
Vehicle Does Not Decelerate By Engine Brake ... 343
TCM Self-diagnosis Does Not Activate ................ 344
ALL
MAIN POWER SUPPLY AND GROUND CIRCUIT . 350
Wiring Diagram — AT — MAIN ............................ 350
Diagnostic Procedure ........................................... 351
VEHICLE SPEED SENSOR·A/T (REVOLUTION
SENSOR) ................................................................ 353
Description ........................................................... 353
Wiring Diagram — AT — VSSA/T ........................ 355
Diagnostic Procedure ........................................... 356
DTC VEHICLE SPEED SENSOR MTR .................. 358
Description ........................................................... 358
Wiring Diagram — AT — VSSMTR ...................... 360
Diagnostic Procedure ........................................... 361
ACCELE RATOR PEDAL POSITION (APP) SEN-
SOR ........................................................................ 362
Description ........................................................... 362
Wiring Diagram — AT — TPS .............................. 364
Diagnostic Procedure ........................................... 365
SHIFT SOLENOID VALVE A .................................. 367
Description ........................................................... 367
Wiring Diagram — AT — SSV/A .......................... 369Diagnostic Procedure ...........................................370
Component Inspection ..........................................371
SHIFT SOLENOID VALVE B ..................................372
Description ............................................................372
Wiring Diagram — AT — SSV/B ...........................374
Diagnostic Procedure ...........................................375
Component Inspection ..........................................376
OVERRUN CLUTCH SOLENOID VALVE ...............377
Description ............................................................377
Wiring Diagram — AT — OVRCSV ......................378
Diagnostic Procedure ...........................................379
Component Inspection ..........................................380
TORQUE CONVERTER CLUTCH SOLENOID
VALVE .....................................................................381
Description ............................................................381
Wiring Diagram — AT — TCV ..............................383
Diagnostic Procedure ...........................................384
Component Inspection ..........................................385
BATT/FLUID TEMP SEN (A/T FLUID TEMP SEN-
SOR CIRCUIT AND TCM POWER SOURCE) .......386
Description ............................................................386
Wiring Diagram — AT — BA/FTS .........................388
Diagnostic Procedure ...........................................389
Component Inspection ..........................................391
ENGINE SPEED SIGNAL .......................................392
Description ............................................................392
Wiring Diagram — AT — ENGSS .........................393
Diagnostic Procedure ...........................................394
LINE PRESSURE SOLENOID VALVE ..................
.396
Description ............................................................396
Wiring Diagram — AT — LPSV ............................398
Diagnostic Procedure ...........................................399
Component Inspection ..........................................401
CAN COMMUNICATION LINE ...............................403
Description ............................................................403
On Board Diagnosis Logic ....................................403
Self-Diagnosis Code Confirmation Procedure ......403
Wiring Diagram — AT — CAN ..............................404
Diagnostic Procedure ...........................................405
A/T SHIFT LOCK SYSTEM ....................................406
Description ............................................................406
Shift Lock System Electrical Parts Location .........406
Wiring Diagram — SHIFT — ................................407
Diagnostic Procedure ...........................................408
KEY INTERLOCK CABLE ......................................412
Components .........................................................412
Removal ...............................................................412
Installation ............................................................413
ON-VEHICLE SERVICE ..........................................414
Control Valve Assembly and Accumulators ..........414
Control Cable Adjustment .....................................416
Park/Neutral Position (PNP) Switch Adjustment ..416
Differential Side Oil Seal Replacement ................417
Revolution Sensor Replacement ..........................417
REMOVAL AND INSTALLATION ...........................418
Removal ...............................................................418
Installation ............................................................419
OVERHAUL ............................................................421
Components .........................................................421

PRECAUTIONS
AT-5
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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 harness connec-
tors.
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 lamp (MIL) 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 MIL to light up.
●Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL 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 MIL 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 MIL 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

PRECAUTIONS
AT-7
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●After performing each TROUBLE DIAGNOSIS, perform
“DTC (Diagnostic Trouble Code) CONFIRMATION PROCE-
DURE”.
The DTC should not be displayed in the “DTC CONFIRMA-
TION PROCEDURE” if the repair is completed.
●Before proceeding with disassembly, thoroughly clean the out-
side of the transaxle. It is important to prevent the internal parts
from becoming contaminated by dirt or other foreign matter.
●Disassembly should be done in a clean work area.
●Use lint-free cloth or towels for wiping parts clean. Common
shop rags can leave fibers that could interfere with the operation
of the transaxle.
●Place disassembled parts in order for easier and proper assembly.
●All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or
reassembly.
●Gaskets, seals and O-rings should be replaced any time the transaxle is disassembled.
●It is very important to perform functional tests whenever they are indicated.
●The valve body contains precision parts and requires extreme care when parts are removed and serviced.
Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent
springs and small parts from becoming scattered or lost.
●Properly installed valves, sleeves, plugs, etc. will slide along bores in valve body under their own weight.
●Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings
and seals, or hold bearings and washers in place during assembly. Do not use grease.
●Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.
●After overhaul, refill the transaxle with new ATF.
●When the A/T drain plug is removed, only some of the fluid is drained. Old A/T fluid will remain in torque
converter and ATF cooling system.
Always follow the procedures under “Changing A/T Fluid” in the AT section when changing A/T fluid. Refer
to “Changing A/T Fluid”, AT-13, "
A/T FLUID" .
Service Notice or PrecautionsECS004Q3
FA I L - S A F E
The TCM has an electronic Fail-Safe (limp home mode). This allows the vehicle to be driven even if a major
electrical input/output device circuit is damaged.
Under Fail-Safe, the vehicle always runs in third gear, even with a shift lever position of “1”, “2” or “D”. The cus-
tomer may complain of sluggish or poor acceleration.
When the ignition key is turned “ON” following Fail-Safe operation, O/D OFF indicator lamp blinks for about 8
seconds. Refer to AT- 2 5 3 , "
SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-II)" (EXCEPT FOR
EURO-OBD) or AT-51, "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)" (EURO-OBD).
The blinking of the O/D OFF indicator lamp for about 8 seconds will appear only once and be cleared. The
customer may resume normal driving conditions.
Always follow the “WORK FLOW”, refer to AT-262, "
Work Flow" (EXCEPT FOR Euro-OBD) or AT- 6 0 , "Work
Flow" (Euro-OBD).
The SELF-DIAGNOSIS results will be as follows:
●The first SELF-DIAGNOSIS will indicate damage to the vehicle speed sensor or the revolution sensor.
●During the next SELF-DIAGNOSIS, performed after checking the sensor, no damages will be indicated.
TORQUE CONVERTER SERVICE
The torque converter should be replaced under any of the following conditions:
●External leaks in the hub weld area.
●Converter hub is scored or damaged.
●Converter pilot is broken, damaged or fits poorly into crankshaft.
●Steel particles are found after flushing the cooler and cooler lines.
●Pump is damaged or steel particles are found in the converter.
●Vehicle has TCC shudder and/or no TCC apply. Replace only after all hydraulic and electrical diagnoses
have been made. (Converter clutch material may be glazed.)
SAT652J