Nissan Pathfinder (2012 year). Instruction — part 301
EVAP LEAK CHECK
EC-489
< PERIODIC MAINTENANCE >
[VQ40DE]
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EVAP LEAK CHECK
How to Detect Fuel Vapor Leakage
INFOID:0000000007358404
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
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.
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
WITHOUT CONSULT
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
SEF200U
SEF462UA
AWBIA0134ZZ
August 2012
2012 Pathfinder
EC-490
< SERVICE DATA AND SPECIFICATIONS (SDS)
[VQ40DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Fuel Pressure
INFOID:0000000007358405
Idle Speed and Ignition Timing
INFOID:0000000007358406
*: 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:0000000007358407
Mass Air Flow Sensor
INFOID:0000000007358408
*: Engine is warmed up to normal operating temperature and running under no load.
Intake Air Temperature Sensor
INFOID:0000000007358409
Engine Coolant Temperature Sensor
INFOID:0000000007358410
Air Fuel Ratio (A/F) Sensor 1 Heater
INFOID:0000000007358411
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 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 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
August 2012
2012 Pathfinder
SERVICE DATA AND SPECIFICATIONS (SDS)
EC-491
< SERVICE DATA AND SPECIFICATIONS (SDS)
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Heated Oxygen sensor 2 Heater
INFOID:0000000007358412
Crankshaft Position Sensor (POS)
INFOID:0000000007358413
EC-221, "Component Inspection"
Camshaft Position Sensor (PHASE)
INFOID:0000000007358414
EC-226, "Component Inspection"
Throttle Control Motor
INFOID:0000000007358415
Fuel Injector
INFOID:0000000007358416
Fuel Pump
INFOID:0000000007358417
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
August 2012
2012 Pathfinder
EC-492
< PRECAUTION >
[VK56DE]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000008832069
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 Instruction. 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:0000000007833553
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
EC-493
< 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.
On Board Diagnosis (OBD) System of Engine and A/T
INFOID:0000000007358419
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
.
• 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:0000000007358420
•
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.
•
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
SEF289H
PBIB1164E
August 2012
2012 Pathfinder
EC-494
< PRECAUTION >
[VK56DE]
PRECAUTIONS
•
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-545, "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).
•
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.
PBIB1512E
PBIB0090E
MEF040D
JSBIA1315ZZ
August 2012
2012 Pathfinder
PRECAUTIONS
EC-495
< PRECAUTION >
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•
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.
•
Never operate fuel pump when there is no fuel in lines.
•
Tighten fuel hose clamps to the specified torque.
SEF348N
PBIB1144E
BBIA0529E
August 2012
2012 Pathfinder
EC-496
< PRECAUTION >
[VK56DE]
PRECAUTIONS
•
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.
SEF709Y
SEF708Y
August 2012
2012 Pathfinder
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