Nissan Pathfinder (2010 year). Manual - part 359

EC-964

< SERVICE DATA AND SPECIFICATIONS (SDS) 

[VK56DE]

SERVICE DATA AND SPECIFICATIONS (SDS)

Heated Oxygen sensor 2 Heater

INFOID:0000000005257939

Crankshaft Position Sensor (POS)

INFOID:0000000005257940

Refer to 

EC-698, "Component Inspection"

.

Camshaft Position Sensor (PHASE)

INFOID:0000000005257941

Refer to 

EC-702, "Component Inspection"

.

Throttle Control Motor

INFOID:0000000005257942

Fuel Injector

INFOID:0000000005257943

Fuel Pump

INFOID:0000000005257944

Resistance [at 25

°

C (77

°

F)]

8 - 10 

Ω

Resistance [at 25

°

C (77

°

F)]

Approximately 1 - 15 

Ω

Resistance [at 10 - 60

°

C (50 - 140

°

F)]

11.1 - 14.5 

Ω

Resistance [at 25

°

C (77

°

F)]

0.2 - 5.0 

Ω

2010 Pathfinder

EM-1

ENGINE

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SECTION 

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CONTENTS

ENGINE MECHANICAL

VQ40DE

PRECAUTION ...............................................

4

PRECAUTIONS ...................................................

4

Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................

4

Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .....................................

4

Precaution for Drain Engine Coolant .........................

5

Precaution for Disconnecting Fuel Piping  .................

5

Precaution for Removal and Disassembly  ................

5

Precaution for Inspection, Repair and Replace-
ment ..........................................................................

5

Precaution for Assembly and Installation  ..................

5

Parts Requiring Angle Tightening  .............................

5

Precaution for Liquid Gasket .....................................

6

PREPARATION ............................................

7

PREPARATION ...................................................

7

Special Service Tool  .................................................

7

Commercial Service Tool  ..........................................

9

FUNCTION DIAGNOSIS ..............................

12

NOISE, VIBRATION AND HARSHNESS 
(NVH) TROUBLESHOOTING  ............................

12

NVH Troubleshooting - Engine Noise  .....................

12

Use the Chart Below to Help You Find the Cause 
of the Symptom  .......................................................

12

ON-VEHICLE MAINTENANCE ....................

14

DRIVE BELTS  ....................................................

14

Exploded View  ........................................................

14

Checking Drive Belts ...............................................

14

Adjustment ..............................................................

14

Removal and Installation .........................................

14

Drive Belt Auto Tensioner and Idler Pulley  .............

15

AIR CLEANER FILTER .....................................

16

Exploded View .........................................................

16

Removal and Installation  .........................................

16

SPARK PLUG  ...................................................

17

Exploded View .........................................................

17

Removal and Installation  .........................................

17

CAMSHAFT VALVE CLEARANCE  ..................

19

Valve Clearance  ......................................................

19

COMPRESSION PRESSURE  ...........................

23

Compression Pressure  ............................................

23

ON-VEHICLE REPAIR .................................

25

ENGINE ROOM COVER  ...................................

25

Removal and Installation  .........................................

25

AIR CLEANER AND AIR DUCT  .......................

26

Exploded View .........................................................

26

Removal and Installation  .........................................

26

INTAKE MANIFOLD COLLECTOR  ..................

27

Exploded View .........................................................

27

Removal and Installation  .........................................

27

INTAKE MANIFOLD  .........................................

30

Exploded View .........................................................

30

Removal and Installation  .........................................

30

EXHAUST MANIFOLD AND THREE WAY 
CATALYST ........................................................

32

Exploded View .........................................................

32

Removal and Installation (Three Way Catalyst)  ......

32

Removal and Installation (Exhaust Manifold)  ..........

33

OIL PAN AND OIL STRAINER  .........................

36

Exploded View .........................................................

36

Removal and Installation  .........................................

36

IGNITION COIL  .................................................

41

Exploded View .........................................................

41

2010 Pathfinder

EM-2

Removal and Installation  ........................................

41

ROCKER COVER  ..............................................

42

Exploded View ........................................................

42

Removal and Installation  ........................................

42

FUEL INJECTOR AND FUEL TUBE .................

46

Exploded View ........................................................

46

Removal and Installation  ........................................

46

FRONT TIMING CHAIN CASE  ..........................

51

Exploded View ........................................................

51

Removal and Installation  ........................................

51

TIMING CHAIN  ..................................................

60

Exploded View ........................................................

60

Removal and Installation  ........................................

60

REAR TIMING CHAIN CASE  ............................

68

Exploded View ........................................................

68

Removal and Installation  ........................................

68

CAMSHAFT .......................................................

73

Exploded View ........................................................

73

Removal and Installation  ........................................

74

OIL SEAL ...........................................................

83

Removal and Installation of Valve Oil Seal .............

83

Removal and Installation of Front Oil Seal  .............

83

Removal and Installation of Rear Oil Seal ..............

84

CYLINDER HEAD ..............................................

86

Exploded View ........................................................

86

Removal and Installation  ........................................

86

Exploded View ........................................................

90

Disassembly and Assembly ....................................

90

Inspection After Disassembly .................................

92

REMOVAL AND INSTALLATION ...............

97

ENGINE ASSEMBLY .........................................

97

Exploded View ........................................................

97

Removal and Installation  ........................................

97

DISASSEMBLY AND ASSEMBLY  ............

101

ENGINE UNIT  ..................................................

101

Exploded View .......................................................

101

Disassembly and Assembly ...................................

102

Inspection After Disassembly ................................

112

Dowel Pin Alignment  .............................................

121

HOW TO SELECT PISTON AND BEARING ...

123

How to Select Piston and Bearing  .........................

123

SERVICE DATA AND SPECIFICATIONS 
(SDS) ..........................................................

128

SERVICE DATA AND SPECIFICATIONS 
(SDS) ................................................................

128

Standard and Limit  ................................................

128

VK56DE

PRECAUTION ...........................................

139

PRECAUTIONS  ................................................

139

Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................

139

Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect  ................................

139

Precaution for Drain Engine Coolant  ....................

140

Precaution for Disconnecting Fuel Piping  .............

140

Precaution for Removal and Disassembly  ............

140

Precaution for Inspection, Repair and Replace-
ment ......................................................................

140

Precaution for Assembly and Installation ..............

140

Parts Requiring Angular Tightening  ......................

140

Precaution for Liquid Gasket .................................

141

PREPARATION .........................................

142

PREPARATION ................................................

142

Special Service Tool  .............................................

142

Commercial Service Tool ......................................

144

FUNCTION DIAGNOSIS  ...........................

146

NOISE, VIBRATION, AND HARSHNESS 
(NVH) TROUBLESHOOTING ...........................

146

NVH Troubleshooting - Engine Noise  ...................

146

Use the Chart Below to Help You Find the Cause 
of the Symptom .....................................................

147

ON-VEHICLE MAINTENANCE .................

149

DRIVE BELTS  ..................................................

149

Exploded View  ......................................................

149

Checking Drive Belts .............................................

149

Adjustment ............................................................

149

Removal and Installation .......................................

149

Drive Belt Auto Tensioner and Idler Pulley  ...........

150

AIR CLEANER FILTER  ....................................

151

Exploded View  ......................................................

151

Removal and Installation .......................................

151

SPARK PLUG ...................................................

152

Exploded View  ......................................................

152

Removal and Installation .......................................

152

CAMSHAFT VALVE CLEARANCE  .................

154

Valve Clearance ....................................................

154

COMPRESSION PRESSURE  ..........................

159

Compression Pressure  .........................................

159

ON-VEHICLE REPAIR  ..............................

160

ENGINE ROOM COVER  ..................................

160

Removal and Installation .......................................

160

AIR CLEANER AND AIR DUCT .......................

161

Exploded View  ......................................................

161

Removal and Installation .......................................

161

2010 Pathfinder

EM-3

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INTAKE MANIFOLD .........................................

162

Exploded View  ......................................................

162

Removal and Installation .......................................

162

EXHAUST MANIFOLD AND THREE WAY 
CATALYST .......................................................

166

Exploded View  ......................................................

166

Removal and Installation .......................................

166

OIL PAN AND OIL STRAINER  ........................

169

Exploded View  ......................................................

169

Removal and Installation .......................................

169

IGNITION COIL  ................................................

173

Exploded View  ......................................................

173

Removal and Installation .......................................

173

ROCKER COVER .............................................

174

Exploded View  ......................................................

174

Removal and Installation .......................................

174

FUEL INJECTOR AND FUEL TUBE  ...............

176

Exploded View  ......................................................

176

Removal and Installation .......................................

176

TIMING CHAIN  .................................................

180

Exploded View  ......................................................

180

Removal and Installation .......................................

181

CAMSHAFT ......................................................

189

Exploded View  ......................................................

189

Removal and Installation .......................................

189

Inspection after Installation  ...................................

198

OIL SEAL  ........................................................

200

Removal and Installation of Valve Oil Seal ............

200

Removal and Installation of Front Oil Seal  ............

200

Removal and Installation of Rear Oil Seal .............

202

CYLINDER HEAD  ...........................................

204

Exploded View .......................................................

204

Removal and Installation  .......................................

204

Exploded View .......................................................

206

Disassembly and Assembly ...................................

206

Inspection After Disassembly  ................................

208

REMOVAL AND INSTALLATION .............

214

ENGINE ASSEMBLY ......................................

214

Exploded View .......................................................

214

Removal and Installation  .......................................

214

DISASSEMBLY AND ASSEMBLY ............

218

ENGINE UNIT ..................................................

218

Exploded View .......................................................

218

Disassembly and Assembly ...................................

219

Inspection After Disassembly  ................................

226

HOW TO SELECT PISTON AND BEARING  ..

237

How to Select Piston and Bearing  .........................

237

SERVICE DATA AND SPECIFICATIONS 
(SDS) ..........................................................

244

SERVICE DATA AND SPECIFICATIONS 
(SDS) ...............................................................

244

Standard and Limit  ................................................

244

2010 Pathfinder

EM-4

< PRECAUTION >

[VQ40DE]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER"

INFOID:0000000005531974

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. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS

system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front

air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in the SR and SB section of this Service Man-

ual.

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 performed by

an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag

Module, see the SR 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 har-

ness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-

tion ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a

hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing

serious injury.

• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precaution Necessary for Steering Wheel Rotation After Battery Disconnect

INFOID:0000000005260419

NOTE:

• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-

TEM).

• Remove and install all control units after disconnecting both battery cables with the ignition knob in the

″

LOCK

″

 position.

• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.

If DTC is detected, perform trouble diagnosis according to self-diagnostic results.

For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-

anism is adopted on the key cylinder.

For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and

steering wheel rotation will become impossible.

If steering wheel rotation is required when battery power is interrupted, follow the procedure below before

starting the repair operation.

OPERATION PROCEDURE

1. Connect both battery cables.

NOTE:

Supply power using jumper cables if battery is discharged.

2. Use the Intelligent Key or mechanical key to turn the ignition switch to the 

″

ACC

″

 position. At this time, the

steering lock will be released.

3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be

rotated.

4. Perform the necessary repair operation.

2010 Pathfinder

PRECAUTIONS

EM-5

< PRECAUTION >

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5. When the repair work is completed, return the ignition switch to the 

″

LOCK

″

 position before connecting

the battery cables. (At this time, the steering lock mechanism will engage.)

6. Perform a self-diagnosis check of all control units using CONSULT-III. 

Precaution for Drain Engine Coolant

INFOID:0000000005260420

Drain engine coolant when engine is cooled.

Precaution for Disconnecting Fuel Piping

INFOID:0000000005260421

• Before starting work, make sure no fire or spark producing items are in the work area. 

• Release fuel pressure before disconnecting and disassembly.

• After disconnecting pipes, plug openings to stop fuel leakage.

Precaution for Removal and Disassembly

INFOID:0000000005260422

• When instructed to use special service tools, use the specified tools. Always be careful to work safely, avoid

forceful or uninstructed operations. 

• Exercise maximum care to avoid damage to mating or sliding surfaces.

• Cover openings of engine system with tape or equivalent, if necessary, to seal out foreign materials.

• Mark and arrange disassembly parts in an organized way for easy troubleshooting and re-assembly.

• When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally

opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be used

in the step.

Precaution for Inspection, Repair and Replacement

INFOID:0000000005260423

Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and

replace if necessary.

Precaution for Assembly and Installation

INFOID:0000000005260424

• Use torque wrench to tighten bolts or nuts to specification.

• When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the

ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is specified,

do exactly as specified.

• Replace with new gasket, packing, oil seal or O-ring.

• Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for

any restriction and blockage. 

• Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.

Before assembly, oil sliding surfaces well. 

• Release air within route when refilling after draining engine coolant. 

• Before starting engine, apply fuel pressure to fuel lines with turning ignition switch ON (with engine stopped).

Then make sure that there are no leaks at fuel line connections.

• After repairing, start engine and increase engine speed to check engine coolant, fuel, engine oil, and

exhaust gasses for leakage.

Parts Requiring Angle Tightening

INFOID:0000000005260425

• For the final tightening of the following engine parts use Tool: 

- Cylinder head bolts

- Lower cylinder block bolts

- Connecting rod cap bolts

- Crankshaft pulley bolt (No angle wrench is required as bolt flange is provided with notches for angle tighten-

ing)

• Do not use a torque value for final tightening. 

• The torque value for these parts are for a preliminary step.

• Ensure thread and seat surfaces are clean and coated with engine oil. 

Tool number

: KV10112100 (BT-8653-A)

2010 Pathfinder

EM-6

< PRECAUTION >

[VQ40DE]

PRECAUTIONS

Precaution for Liquid Gasket

INFOID:0000000005260426

REMOVAL OF LIQUID GASKET SEALING

• After removing nuts and bolts, separate the mating surface and

remove old liquid gasket sealing using Tool.

CAUTION:

Be careful not to damage the mating surfaces.

• Tap seal cutter to insert it (1), and then slide it by tapping on the

side (2) as shown.

• In areas where Tool is difficult to use, use plastic hammer to lightly

tap the part, to remove it.

CAUTION:

If for some unavoidable reason tool such as screwdriver is

used, be careful not to damage the mating surfaces.

LIQUID GASKET APPLICATION PROCEDURE

1. Remove the old liquid gasket adhering to the gasket application

surface and the mating surface using suitable tool.

• Remove liquid gasket completely from the groove of the gas-

ket application surface, bolts, and bolt holes.

2. Thoroughly clean the mating surfaces and remove adhering

moisture, grease and foreign materials.

3. Attach liquid gasket tube to the Tool.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-14, "Recommended Chemical Products and Sealants"

.

4. Apply the liquid gasket without breaks to the specified location

with the specified dimensions.

• If there is a groove for the liquid gasket application, apply the

liquid gasket to the groove.

• As for bolt holes, normally apply the liquid gasket inside the

holes. Occasionally, it should be applied outside the holes.

Make sure to read the text of this manual.

• Within five minutes of liquid gasket application, install the mat-

ing component.

• If the liquid gasket protrudes, wipe it off immediately.

• Do not retighten nuts or bolts after the installation.

• Wait 30 minutes or more after installation, before refilling the

engine with engine oil and engine coolant.

CAUTION:

If there are specific instructions in this manual, observe them.

Tool number

: KV10111100 (J-37228)

WBIA0566E

PBIC0003E

Tool number

: WS39930000 (

—

)

WBIA0567E

SEM159F

2010 Pathfinder

PREPARATION

EM-7

< PREPARATION >

[VQ40DE]

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PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000005260427

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number
(Kent-Moore No.)
Tool name

Description

ST0501S000
( — )
Engine stand assembly
1. ST05011000
( — )
Engine stand
2. ST05012000
( — )
Base

Disassembling and assembling engine

—

(J-45488)
Quick connector release

Removing fuel tube quick connectors in en-
gine room
(Available in SEC. 164 of PARTS CATALOG: 
Part No. 16441 6N210)

KV10111100
(J-37228)
Seal cutter

Removing oil pan (lower and upper), front and 
rear timing chain case, etc.

WS39930000
( — )
Tube presser

Pressing the tube of liquid gasket

KV991J0050
(J-44626)
Air fuel sensor Socket

Loosening or tightening air fuel ratio A/F sen-
sor

a: 22 mm (0.87 in)

KV10114400
(J-38365)
Heated oxygen sensor wrench

Loosening or tightening heated oxygen sen-
sor 1

a: 22 mm (0.87 in)

NT042

PBIC0198E

NT046

NT052

LBIA0444E

NT636

2010 Pathfinder