2001 NISSAN X-TRAIL sensor

FUEL LEVEL SENSOR UNIT
FL-17
[YD22DDTi]
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FUEL LEVEL SENSOR UNITPFP:17042
Removal and InstallationEBS00BLD
REMOVAL
WARNING:
Be sure to read “General Precautions” When working on fuel system. Refer to FL-14, "
General Precau-
tions" .
1. Disconnect battery ground cable.
2. Open fuel filler lid.
3. Open the filler cap and release the pressure inside the fuel tank.
4. Check fuel level on level place. If gauge indicates more than the
level shown in figure (full or almost full), drain fuel from fuel tank
until gauge indicates level shown in figure or below.
In case of fuel pump does not operate, take following procedure.
a. Insert fuel tube of less than 25 mm (0.98 in) in diameter into fuel
filler tube through fuel filler opening to draw fuel from fuel filler
tube.
b. Disconnect fuel filler hose from fuel filler tube.
c. Insert fuel tube into fuel tank through fuel filler hose to draw fuel
from fuel tank.
●As a guide, fuel level becomes the position shown in figure or
below when approximately 15 liter (13-1/4 lmp qt) of fuel are drained from full tank.
NOTE:
Adjusting fuel level is to prevent fuel from spilling, when fuel level sensor unit is removed.
SBIA0139E
1. Lock ring 2. Main fuel level sensor unit 3.Jet pump, fuel hose and jet pump
inlet assembly
4. Chamber 5. Seal packing 6. Sub fuel level sensor unit
SBIA0140E
FEL0403D

FL-18
[YD22DDTi]
FUEL LEVEL SENSOR UNIT
5. Remove rear seat bottom.
6. Peel off floor carpet, then remove inspection hole cover.
7. Disconnect the harness connector, fuel feed tube and fuel return
tube.
●Disconnect the quick connector of the fuel tube as follows.
NOTE:
●Hold the sides of the connector, push in tubs and pull out the
tube.
●If the connector and the tubs are stuck together, push and pull
several times until they start to move. Then disconnect them
by pulling.
CAUTION:
●The quick connector can be removed when the tabs are
completely depressed. Do not twist it more than neces-
sary.
●Do not use any tools to remove the quick connector.
●Keep the resin tube away from heat. Be especially careful
when welding near the tube.
●Prevent acid liquid such as battery electrolyte etc. from
getting on the resin tube.
●Do not bend or twist the tube during installation and
removal.
●Do not remove the remaining retainer on tube or fuel level
sensor unit.
●When the tube or fuel level sensor unit is replaced, also
replace the retainer with a new one.
SBIA0141E
SFE562A
Retainer color : Green (Feed hose side)
: Gray (Return hose side)
PBIC0199E

FUEL LEVEL SENSOR UNIT
FL-19
[YD22DDTi]
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●To keep clean the connecting portion and to avoid dam-
age and foreign materials, cover them completely with
plastic bags or something similar.
8. Using a fuel tank lock ring wrench, remove the lock ring.
9. Remove main fuel level sensor unit and sub fuel level sensor
unit.
CAUTION:
●Do not bend the float arm during removal.
●Avoid impacts such as falling when handling compo-
nents.
Removal of main fuel level sensor unit:
●Raise the fuel level sensor unit, and remove the jet pump.
●Leave the jet pump on the fuel tank with the fuel hose.
●If necessary, remove the chamber from the bottom of the fuel
tank.
●Remove the chamber by sliding toward the rear of the vehicle.
Removal of sub fuel level sensor unit:
●Raise and release the sub fuel level sensor unit to remove.
●If necessary, remove the jet pump inlet from the bottom of the fuel tank.
To remove it, pinch the tabs (2 places).
INSPECTION AFTER REMOVAL
Make sure the fuel pump strainer is free from foreign materials, If any are found, remove them.
INSTALLATION
Install in the reverse order of removal paying attention to the follow-
ing.
●When installing the chamber and jet pump, insert them fully until
a click sound of full stopper engagement is heard (for jet pump
inlet).
●Connect the quick connector as follows.
1. Check the connection for damage and foreign materials.
2. Align the connector with the tube, then insert the connector
straight into the tube until a click is heard.
3. After connecting, make sure that the connection is secure by fol-
lowing the steps below.
PBIC0163E
PBIC0240E
SBIA0142E
SBIA0143E

FL-20
[YD22DDTi]
FUEL LEVEL SENSOR UNIT
●Visually confirm that the two retainer tabs are connected to the connector.
●Pull the tube and the connector to make sure they are securely connected.
●Install fuel level sensor unit with mating mark (triangular protrusion) facing between two carved lines on
fuel tank. (Figure shows left side of fuel tank.)
NOTE:
On right side of fuel tank, there are three carved lines on fuel tank. Set mating mark between two outer
carved lines.
●Install the inspection hole cover with the front mark (arrow)
facing front of the vehicle (Both for RH and LH).
INSPECTION AFTER INSTALLATION
Make sure there is no fuel leakage at connections in the following steps.
1. Apply fuel pressure to fuel lines with turning ignition switch ON (with engine stopped). Then check for fuel
leaks at connections.
2. Start the engine and rev it up and check for fuel leaks at connections.
SBIA0144E

FL-22
[YD22DDTi]
FUEL TANK
10. Using a transmission jack, support the bottom of the rear final
drive.
11. Remove the mounting nuts on the rear suspension member, and
lower the transmission jack carefully until just before the rear
suspension member is removed from the stud bolts on the vehi-
cle.
12. Disconnect fuel filler hose, EVAP hose and vent hose at fuel
tank side.
For disconnection procedure of the quick connector. Refer to
FL-17, "
FUEL LEVEL SENSOR UNIT" .
13. Remove fuel tank protector.
14. Remove fuel tank band mounting bolts while supporting fuel
tank.
15. Remove fuel tank.
INSTALLATION
●Install in the reverse order of removal paying attention to the following.
●Surely clamp fuel hoses and insert hose to the length below.
●Be sure hose clamp is not positioned on swelled area of fuel tube.
●Tighten fuel hose clamp so that the distance between its lugs becomes to the following.
●Push the mounting band pin to the vehicle side securely.
●Before fixing the fuel tank, temporarily install the fuel filler tube.
CAUTION:
Use genuine fuel filler tube mounting bolts or equivalent. Make sure to tighten them to the speci-
fied torque.
●To connect the quick connector. Refer to FL-17, "FUEL LEVEL SENSOR UNIT" .
INSPECTION AFTER INSTALLATION
Make sure there is no fuel leakage at connections in the following steps.
KBIA0285E
KBIA0286E
KBIA0290E
Fuel filler hose : 35 mm (1.38 in)
The other hose : 25 mm (0.98 in)
Fuel tank side : 5 - 9 mm (0.20 - 0.35 in)
Fuel filler tube side : 7 - 11 mm (0.28 - 0.43 in)

ACC-2
ACCELERATOR CONTROL SYSTEM
ACCELERATOR CONTROL SYSTEM
PFP:18005
Removal and InstallationEBS00KP5
QR20DE AND QR25DE
YD22DDTI
REMOVAL
1. Disconnect accelerator pedal position sensor (QR) or accelerator work unit (YD22DDTi) harness connec-
tor.
2. Loosen nuts, and remove accelerator pedal assembly.
3. If necessary, loosen nuts and bolts, and remove accelerator pedal bracket (YD22DDTi).
CAUTION:
●Do not disassemble the accelerator pedal assembly. Do not remove the accelerator pedal posi-
tion sensor (QR) or accelerator work unit (YD22DDTi) from the accelerator pedal assembly.
●Avoid impact from dropping etc. during handling.
●Be careful to keep the accelerator pedal assembly away from water.
KBIA0307E
1. Accelerator pedal assembly
PBIC1224E
1. Accelerator pedal assembly (work unit) 2. Accelerator pedal bracket

ACCELERATOR CONTROL SYSTEM
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●Do not adjust the adjusting screw (painted white) of the accelerator work unit. (YD22DDTi)
INSTALLATION
Install in the reverse order of removal.
INSPECTION AFTER INSTALLATION
●Check that the accelerator pedal moves smoothly within the whole operation range.
●Check that the accelerator pedal securely returns to the original position.
●For the electrical inspection of the accelerator pedal position sensor, refer to EC-893, "DTC P0121 APP
SENSOR" [QR20DE (WITH EURO-OBD)], EC-1222, "DTC P0121 APP SENSOR" [QR20DE (WITHOUT
EURO-OBD)], EC-355, "
DTC P2122, P2123 APP SENSOR" , EC-361, "DTC P2127, P2128 APP SEN-
SOR" [QR25DE (WITH EURO-OBD)] or EC-631, "DTC P2122, P2123 APP SENSOR" , EC-637, "DTC
P2127, P2128 APP SENSOR" [QR25DE (WITHOUT EURO-OBD)].
●For the electrical inspection of the accelerator work unit, refer to EC-1460, "DTC P0120 ACCELERATOR
PEDAL POSITION SENSOR" or EC-1531, "DTC P1510 ACCELERATOR PEDAL RELEASED POSI-
TION SWITCH" . (YD22DDTi)
●Check that the drum of the accelerator work unit can be fully opened. (YD22DDTi)
CAUTION:
When the harness connector of the accelerator pedal position sensor (QR) or accelerator work
unit (YD22DDTi) is disconnected, perform ″Accelerator Pedal Released Position Learning″. Refer
to EC-772, "
Accelerator Pedal Released Position Learning" [QR20DE (WITH EURO-OBD)], EC-
11 36 , "Accelerator Pedal Released Position Learning" [QR20DE (WITHOUT EURO-OBD)], EC-39,
"Accelerator Pedal Released Position Learning" [QR25DE (WITH EURO-OBD)], EC-449, "Accelera-
tor Pedal Released Position Learning" [QR25DE (WITHOUT EURO-OBD) or EC-1404, "Accelerator
Pedal Released Position Learning" (YD22DDTi).

AT-1
AUTOMATIC TRANSAXLE
C TRANSMISSION/TRANSAXLE
CONTENTS
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SECTION
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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