Nissan Pathfinder (2011 year). Manual - part 304

EC-486

< PERIODIC MAINTENANCE >

[VQ40DE]

EVAP LEAK CHECK

EVAP LEAK CHECK

How to Detect Fuel Vapor Leakage

INFOID:0000000006244189

CAUTION:

• Never use compressed air or a high pressure pump.
• Never exceed 4.12 kPa (0.042 kg/cm

2

, 0.6 psi) of pressure in EVAP system.

NOTE:

• Do not start engine.

• Improper installation of EVAP service port adapter to the EVAP service port may cause a leak.

 WITH CONSULT-III

1. Attach the EVAP service port adapter securely to the EVAP service port.

2. Also attach the pressure pump and hose to the EVAP service port adapter.

3. Turn ignition switch ON.

4. Select the “EVAP SYSTEM CLOSE” of “WORK SUPPORT MODE” with CONSULT-III.

5. Touch “START”. A bar graph (Pressure indicating display) will appear on the screen.

6. Apply positive pressure to the EVAP system until the pressure indicator reaches the middle of the bar

graph.

7. Remove EVAP service port adapter and hose with pressure pump.

8. Locate the leak using a leak detector. Refer to 

EC-57, "Descrip-

tion"

.

 WITHOUT CONSULT-III

1. Attach the EVAP service port adapter securely to the EVAP ser-

vice port.

2. Also attach the pressure pump with pressure gauge to the EVAP

service port adapter.

3. Apply battery voltage between the terminals of EVAP canister

vent control valve (3) to make a closed EVAP system.

-

Fuel filler pipe (top of frame view) (1)

-

EVAP control system pressure sensor (2)

-

EVAP ccanister (4)

-

Drain filter (5)

-

: Vehicle front

4. To locate the leak, deliver positive pressure to the EVAP system

until pressure gauge points reach 1.38 to 2.76 kPa (0.014 to
0.028 kg/cm

2

, 0.2 to 0.4 psi).

5. Remove EVAP service port adapter and hose with pressure

pump.

6. Locate the leak using a leak detector. Refer to 

EC-57, "Description"

.

SEF200U

SEF462UA

AWBIA0134ZZ

2011 Pathfinder

SERVICE DATA AND SPECIFICATIONS (SDS)

EC-487

< SERVICE DATA AND SPECIFICATIONS (SDS) 

[VQ40DE]

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SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Fuel Pressure

INFOID:0000000006244192

Idle Speed and Ignition Timing

INFOID:0000000006244193

*: Under the following conditions:
• Air conditioner switch: OFF
• Electric load: OFF (Lights, heater fan & rear window defogger)
• Steering wheel: Kept in straight-ahead position

Calculated Load Value

INFOID:0000000006244194

Mass Air Flow Sensor

INFOID:0000000006244195

*: Engine is warmed up to normal operating temperature and running under no load.

Intake Air Temperature Sensor

INFOID:0000000006244196

Engine Coolant Temperature Sensor

INFOID:0000000006244197

Air Fuel Ratio (A/F) Sensor 1 Heater

INFOID:0000000006244198

Fuel pressure at idling kPa (kg/cm

2

, psi)

Approximately 350 (3.57, 51)

Target idle speed

No load* (in P or N position)

625 

±

 50 rpm

Air conditioner: ON

In P or N position

625 rpm or more

Ignition timing

In P or N position

15 

±

 5

°

 BTDC

Condition

Calculated load value% (Using CONSULT-III or GST)

At idle

5 - 35

At 2,500 rpm

5 - 35

Supply voltage

Battery voltage (11 - 14V)

Output voltage at idle

0.9 - 1.2*V

Mass air flow (Using CONSULT-III or GST)

2.0 - 6.0 g/s at idle*

7.0 - 20.0 g/s at 2,500 rpm*

Temperature 

°

C (

°

F)

Resistance k

Ω

25 (77)

1.800 - 2.200

Temperature 

°

C (

°

F)

Resistance k

Ω

20 (68)

2.1 - 2.9

50 (122)

0.68 - 1.00

90 (194)

0.236 - 0.260

Resistance [at 25

°

C (77

°

F)]

1.80 - 2.44

Ω

2011 Pathfinder

EC-488

< SERVICE DATA AND SPECIFICATIONS (SDS) 

[VQ40DE]

SERVICE DATA AND SPECIFICATIONS (SDS)

Heated Oxygen sensor 2 Heater

INFOID:0000000006244199

Crankshaft Position Sensor (POS)

INFOID:0000000006244200

Refer to 

EC-221, "Component Inspection"

.

Camshaft Position Sensor (PHASE)

INFOID:0000000006244201

Refer to 

EC-226, "Component Inspection"

.

Throttle Control Motor

INFOID:0000000006244202

Fuel Injector

INFOID:0000000006244203

Fuel Pump

INFOID:0000000006244204

Resistance [at 25

°

C (77

°

F)]

9.9 - 13.3

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

2011 Pathfinder

PRECAUTIONS

EC-489

< PRECAUTION >

[VK56DE]

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PRECAUTION

PRECAUTIONS

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

INFOID:0000000008197439

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 SRS 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 SRS section.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness

connectors.

On Board Diagnosis (OBD) System of Engine and A/T

INFOID:0000000006244636

The ECM has an on board diagnostic system. It will illuminate the malfunction indicator lamp (MIL) to warn the

driver of a malfunction causing emission deterioration.

CAUTION:

• Always turn the ignition switch OFF and disconnect the negative battery cable before any repair or

inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will cause

the MIL to illuminate.

• Always connect and lock the connectors securely after work. A loose (unlocked) connector will

cause the MIL to illuminate due to the open circuit. (Check that 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-lock-

ing type harness connector. For description and how to disconnect, refer to 

PG-67, "Description"

.

• Always route and secure the harnesses properly after work. The interference of the harness with a

bracket, etc. may cause the MIL to illuminate due to the short circuit.

• Always connect rubber tubes properly after work. A misconnected or disconnected rubber tube may

cause the MIL to illuminate due to the malfunction of the EVAP system or fuel injection system, etc.

• Always erase the unnecessary malfunction information (repairs completed) from the ECM and TCM

(Transmission control module) before returning the vehicle to the customer.

Precaution

INFOID:0000000006244637

•

Always use a 12 volt battery as power source.

•

Never 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 bat-

tery cable. 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 dis-

connect negative battery cable.

SEF289H

2011 Pathfinder

EC-490

< PRECAUTION >

[VK56DE]

PRECAUTIONS

•

Never disassemble ECM.

•

If a battery cable is disconnected, the memory will return to

the ECM value.

The ECM will now start to self-control at its initial value. Thus,

engine operation can vary slightly in this case. However, this

is not an indication of a malfunction. Never replace parts

because of a slight variation.

•

If the battery is disconnected, the following emission-related

diagnostic information will be cleared within 24 hours.

-

Diagnostic trouble codes

-

1st trip diagnostic trouble codes

-

Freeze frame data

-

1st trip freeze frame data

-

System readiness test (SRT) codes

-

Test values

•

When connecting ECM harness connector, fasten it securely

with a lever as far as it will go as shown in the figure.

•

When connecting or disconnecting pin connectors into or

from ECM, never damage pin terminals (bends or breaks).

Check that there are not any bends or breaks on ECM pin ter-

minal, when connecting pin connectors.

•

Securely connect ECM harness connectors.

A poor connection can cause an extremely high (surge) volt-

age to develop in coil and condenser, thus resulting in dam-

age to ICs.

•

Keep engine control system harness at least 10 cm (4 in) away

from adjacent harness, to prevent engine control system mal-

functions due to receiving external noise, degraded operation

of ICs, etc.

•

Keep engine control system parts and harness dry.

•

Before replacing ECM, perform ECM Terminals and Reference

Value inspection and check that ECM functions properly.

Refer to 

EC-541, "ECM Terminal and Reference Value"

.

•

Handle mass air flow sensor carefully to avoid damage.

•

Never disassemble mass air flow sensor.

•

Never clean mass air flow sensor with any type of detergent.

•

Never disassemble electric throttle control actuator.

•

Even a slight leakage in the air intake system can cause seri-

ous incidents.

•

Never shock or jar the camshaft position sensor (PHASE),

crankshaft position sensor (POS).

PBIB1164E

PBIB1512E

PBIB0090E

MEF040D

2011 Pathfinder

PRECAUTIONS

EC-491

< PRECAUTION >

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•

After performing each TROUBLE DIAGNOSIS, perform DTC

Confirmation Procedure or Overall Function Check.

The DTC should not be displayed in the DTC Confirmation

Procedure if the repair is completed. The Overall Function

Check should be a good result if the repair is completed.

•

When measuring ECM signals with a circuit tester, never allow

the two tester probes to contact.

Accidental contact of probes will cause a short circuit and

damage the ECM power transistor.

•

Never use ECM ground terminals when measuring input/out-

put voltage. Doing so may result in damage to the ECM's tran-

sistor. Use a ground other than ECM terminals, such as the

ground.

•

B1 indicates bank 1, B2 indicates bank 2 as shown in the fig-

ure.

SEF217U

SEF348N

PBIB1144E

2011 Pathfinder

EC-492

< PRECAUTION >

[VK56DE]

PRECAUTIONS

•

Never operate fuel pump when there is no fuel in lines.

•

Tighten fuel hose clamps to the specified torque.

•

Never depress accelerator pedal when starting.

•

Immediately after starting, do not rev up engine unnecessar-

ily.

•

Never rev up engine just prior to shutdown.

•

When installing C.B. ham radio or a mobile phone, always

observe the following as it may adversely affect electronic

control systems depending on installation location.

-

Keep the antenna as far as possible from the electronic con-

trol units.

-

Keep the antenna feeder line more than 20 cm (8 in) away

from the harness of electronic controls.

Never let them run parallel for a long distance.

-

Adjust the antenna and feeder line so that the standing-wave

radio can be kept smaller.

-

Always ground the radio to vehicle body.

BBIA0529E

SEF709Y

SEF708Y

2011 Pathfinder

PREPARATION

EC-493

< PREPARATION >

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PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000006244638

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

Commercial Service Tool

INFOID:0000000006244639

Tool number
(Kent-Moore No.) 
Tool name

Description

(J-44321)
Fuel pressure gauge 
kit

Checks fuel pressure 

(J-44321-6)
Fuel pressure adapter

Connects fuel pressure gauge to quick connector 
type fuel lines.

(J-45488)
Quick connector re-
lease

Removes fuel tube quick connectors in engine 
room.

LEC642

LBIA0376E

PBIC0198E

Tool name
(Kent-Moore No.)

Description

Leak detector 
i.e.: (J-41416)

Locates the EVAP leak

EVAP service port 
adapter
i.e.: (J-41413-OBD)

Applies positive pressure through EVAP service 
port

S-NT703

S-NT704

2011 Pathfinder