Nissan Pathfinder (2012 year). Manual — part 359
FUEL PRESSURE
EC-953
< PERIODIC MAINTENANCE >
[VK56DE]
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• During fuel pressure check, check for fuel leakage from fuel connection every 3 minutes.
8. If result is unsatisfactory, go to next step.
9. Check the following.
• Fuel hoses and fuel tubes for clogging
• Fuel filter for clogging
• Fuel pump
• Fuel pressure regulator for clogging
If OK, replace fuel pressure regulator. Refer to
.
If NG, repair or replace malfunctioning part.
10. Before disconnecting Fuel Pressure Gauge and Fuel Pressure Adapter [SST (J-44321-6)], release fuel
pressure to zero. Refer to "FUEL PRESSURE RELEASE".
At idling: Approximately 350 kPa (3.57 kg/cm
2
, 51 psi)
August 2012
2012 Pathfinder
EC-954
< PERIODIC MAINTENANCE >
[VK56DE]
EVAP LEAK CHECK
EVAP LEAK CHECK
How to Detect EVAP Leakage
INFOID:0000000007358864
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:
• Never start engine.
• Improper installation of EVAP service port adapter (commercial service tool) to the EVAP service port may
cause a leak.
WITH CONSULT
1. Attach the EVAP service port adapter (commercial service tool)
securely to the EVAP service port.
-
EVAP canister purge volume control solenoid valve (1)
-
: Vehicle front
2. Also attach the pressure pump and hose to the EVAP service
port adapter (commercial service tool).
3. Turn ignition switch ON.
4. Select the “EVAP SYSTEM CLOSE” of “WORK SUPPORT
MODE” with CONSULT.
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 (commercial service tool)
and hose with pressure pump. Refer to
.
8. Locate the leak using a leak detector (commercial service tool).
WITHOUT CONSULT
ALBIA0349ZZ
SEF462UA
SEF200U
August 2012
2012 Pathfinder
EVAP LEAK CHECK
EC-955
< PERIODIC MAINTENANCE >
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1. Attach the EVAP service port adapter (commercial service tool)
securely to the EVAP service port (2).
-
EVAP canister purge volume control solenoid valve (1)
-
: Vehicle front
2. Also attach the pressure pump with pressure gauge to the EVAP
service port adapter (commercial service tool).
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 canister (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 (commercial service tool)
and hose with pressure pump. Refer to
.
6. Locate the leak using a leak detector (commercial service tool). Refer to
.
ALBIA0349ZZ
SEF462UA
AWBIA0134ZZ
August 2012
2012 Pathfinder
EC-956
< SERVICE DATA AND SPECIFICATIONS (SDS)
[VK56DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Fuel Pressure
INFOID:0000000007358865
Idle Speed and Ignition Timing
INFOID:0000000007358866
*: Under the following conditions:
• Air conditioner switch: OFF
• Electric load: OFF (Lights, rear window defogger and heater fan)
• Steering wheel: Kept in straight-ahead position
Calculated Load Value
INFOID:0000000007358867
Mass Air Flow Sensor
INFOID:0000000007358868
*: Engine is warmed up to normal operating temperature and running under no load.
Intake Air Temperature Sensor
INFOID:0000000007358869
Engine Coolant Temperature Sensor
INFOID:0000000007358870
A/F Sensor 1 Heater
INFOID:0000000007358871
Fuel pressure at idling kPa (kg/cm
2
, psi)
Approximately 350 (3.57, 51)
Target idle speed
No-load* (in the P or N position)
650
±
50 rpm
Air conditioner: ON
In the P or N position
700 rpm or more
Ignition timing
In the P or N position
15
°
±
5
°
BTDC
Condition
Calculated load value (%) (Using CONSULT or GST)
At idle
14.0 - 33.0
At 2,500 rpm
12.0 - 25.0
Supply voltage
Battery voltage (11 - 14 V)
Output voltage at idle
1.0 - 1.3 V*
Mass air flow (Using CONSULT or GST)
3.0 - 9.0 g/s at idle*
9.0 - 28.0 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)]
1.98 - 2.66
Ω
August 2012
2012 Pathfinder
SERVICE DATA AND SPECIFICATIONS (SDS)
EC-957
< SERVICE DATA AND SPECIFICATIONS (SDS)
[VK56DE]
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Heated Oxygen sensor 2 Heater
INFOID:0000000007358872
Crankshaft Position Sensor (POS)
INFOID:0000000007358873
EC-747, "Component Inspection"
Camshaft Position Sensor (PHASE)
INFOID:0000000007358874
EC-751, "Component Inspection"
Throttle Control Motor
INFOID:0000000007358875
Fuel Injector
INFOID:0000000007358876
Fuel Pump
INFOID:0000000007358877
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
August 2012
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EX-1
ENGINE
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SECTION
EX
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EX
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CONTENTS
EXHAUST SYSTEM
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect . . . . . . . . .....
PREPARATION . . . . . . . . . . .
PREPARATION . . . . . . . . . . . . ...
Special Service Tool . . . . . . . . . . . .....
Commercial Service Tool . . . . . . . . . . .
PERIODIC MAINTENANCE . . . . . . .
EXHAUST SYSTEM . . . . . . . . . . ...
Checking Exhaust System . . . . . . . . . ....
REMOVAL AND INSTALLATION . . . .
EXHAUST SYSTEM . . . . . . . . . . ...
Exploded View . . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . . ..
August 2012
2012 Pathfinder
EX-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000007828724
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:0000000007358891
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 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.
August 2012
2012 Pathfinder
PRECAUTIONS
EX-3
< 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.
August 2012
2012 Pathfinder
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