Nissan Pathfinder (2010 year). Instruction — part 125
CHG-22
< ON-VEHICLE REPAIR >
GENERATOR
• For this model, the power generation variable voltage control system that controls the power generation volt-
age of the generator has been adopted. Therefore, the power generation variable voltage control system
inspection should be performed after replacing the generator in order to ensure that the system operates
normally.
VK56DE MODELS
Removal
1. Disconnect the negative battery terminal. Refer to
PG-78, "Removal and Installation"
2. Drain the engine coolant. Refer to
CO-40, "Changing Engine Coolant"
.
3. Remove air duct and resonator assembly and air cleaner case (upper). Refer to
.
4. Disconnect the lower radiator hose and the transmission oil cooler hoses from the radiator. Refer to
5. Remove the lower fan shroud. Refer to
6. Disconnect the upper radiator hose and the coolant reservoir hose from the radiator. Refer to
7. Remove the upper fan shroud. Refer to
.
8. Remove the drive belt. Refer to
EM-149, "Removal and Installation"
.
9. Remove the lower bracket, using power tools.
10. Remove the generator upper bolt, using power tools.
11. Disconnect the generator harness connectors.
12. Remove the generator.
Installation
Installation is in the reverse order of removal.
• Install the generator and check the tension of the drive belt. Refer to
EM-149, "Checking Drive Belts"
Terminal nut
: 10.8 N·m (1.1 kg-m, 8 ft-lb)
1.
Generator
2.
Lower bracket
AWBIA0701GB
2010 Pathfinder
CHG
GENERATOR
CHG-23
< ON-VEHICLE REPAIR >
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CAUTION:
Tighten terminal nut carefully.
• For this model, the power generation variable voltage control system that controls the power generation volt-
age of the generator has been adopted. Therefore, the power generation variable voltage control system
inspection should be performed after replacing the generator in order to ensure that the system operates
normally.
Terminal nut
: 10.8 N·m (1.1 kg-m, 8 ft-lb)
2010 Pathfinder
CHG-24
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Generator
INFOID:0000000005255222
*: Always check with the Parts Department for the latest parts information
Type*
TG15S147
Valeo
Engine
VQ40DE/VK56DE
Nominal rating
14V-130A
Ground polarity
Negative
Minimum revolution under no-load
1,200 rpm
Hot output current (When 13.5 volts is applied)
More than 52A/1,500 rpm
More than 82A/1,800 rpm
More than 115A/2,500 rpm
More than 130A/5,000 rpm
Regulated output voltage
13.5V @ 5,000 rpm @ 20
°
C (68
°
F)
Adjustment range of power generation variable
voltage control
11.4 - 15.6V
2010 Pathfinder
CO-1
ENGINE
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SECTION
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CONTENTS
ENGINE COOLING SYSTEM
VQ40DE
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect . . . . . . . . .....
Precaution for Liquid Gasket . . . . . . . . .....
PREPARATION . . . . . . . . . . .
PREPARATION . . . . . . . . . . . . ...
Special Service Tool . . . . . . . . . . . .....
Commercial Service Tool . . . . . . . . . . ..
FUNCTION DIAGNOSIS . . . . . . . ...
COOLING SYSTEM . . . . . . . . . . .
Cooling Circuit . . . . . . . . . . . . . . ...
Schematic . . . . . . . . . . . . . . . .....
OVERHEATING CAUSE ANALYSIS . . . . ..
Troubleshooting Chart . . . . . . . . . . . ...
ON-VEHICLE MAINTENANCE . . . . .
ENGINE COOLANT . . . . . . . . . . ...
System Inspection . . . . . . . . . . . . ...
Changing Engine Coolant . . . . . . . . . ...
ON-VEHICLE REPAIR . . . . . . . . .
RADIATOR . . . . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
Checking Radiator . . . . . . . . . . . . ...
ENGINE COOLING FAN . . . . . . . . .
Exploded View . . . . . . . . . . . . . .
Removal and Installation (Crankshaft driven type) .
Removal and Installation (Motor driven type) . . ..
WATER PUMP . . . . . . . . . . . . ..
Exploded View . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
WATER INLET AND THERMOSTAT ASSEM-
BLY . . . . . . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
WATER OUTLET AND WATER PIPING . . ..
Exploded View . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . . .
Standard and Limit . . . . . . . . . . . . ..
VK56DE
PRECAUTION . . . . . . . . . . . ..
PRECAUTIONS . . . . . . . . . . . . .
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect . . . . . . . . ...
Precaution for Liquid Gasket . . . . . . . . ...
PREPARATION . . . . . . . . . . ...
PREPARATION . . . . . . . . . . . . .
Special Service Tool . . . . . . . . . . . .
Commercial Service Tool . . . . . . . . . .
FUNCTION DIAGNOSIS . . . . . . . ..
COOLING SYSTEM . . . . . . . . . . ..
2010 Pathfinder
CO-2
Cooling Circuit . . . . . . . . . . . . . ....
Schematic . . . . . . . . . . . . . . . ...
OVERHEATING CAUSE ANALYSIS . . . .
Troubleshooting Chart . . . . . . . . . . ....
ON-VEHICLE MAINTENANCE . . . . ...
ENGINE COOLANT . . . . . . . . . . ...
System Inspection . . . . . . . . . . . . ..
Changing Engine Coolant . . . . . . . . . ...
ON-VEHICLE REPAIR . . . . . . . .
RADIATOR . . . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . ....
Removal and Installation . . . . . . . . . ....
Checking Radiator . . . . . . . . . . . . ..
ENGINE COOLING FAN . . . . . . . . ...
Exploded View . . . . . . . . . . . . . .
Removal and Installation (Crankshaft Driven
Type) . . . . . . . . . . . . . . . . . ...
Removal and Installation (Motor Driven Type) . .
WATER PUMP . . . . . . . . . . . . ...
Exploded View . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
THERMOSTAT AND WATER PIPING . . . ..
Exploded View . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . ..
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . . .
Standard and Limit . . . . . . . . . . . . ..
2010 Pathfinder
PRECAUTIONS
CO-3
< PRECAUTION >
[VQ40DE]
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005531978
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
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:0000000005260549
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
CO-4
< PRECAUTION >
[VQ40DE]
PRECAUTIONS
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 Liquid Gasket
INFOID:0000000005260550
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 instruction.
• 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 instruction, observe them.
Tool number
: KV10111100 (J-37228)
WBIA0566E
PBIC0003E
Tool number
: WS39930000 (
—
)
WBIA0567E
SEM159F
2010 Pathfinder
PREPARATION
CO-5
< PREPARATION >
[VQ40DE]
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PREPARATION
PREPARATION
Special Service Tool
INFOID:0000000005260551
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service Tool
INFOID:0000000005260552
Tool number
(Kent-Moore No.)
Tool name
Description
KV10111100
(J-37228)
Seal cutter
Removing chain tensioner cover and water
pump cover
WS39930000
( — )
Tube presser
Pressing the tube of liquid gasket
EG17650301
(J-33984-A)
Radiator cap tester adapter
Adapting radiator cap tester to radiator cap
and radiator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
KV991J0070
(J-45695)
Coolant refill tool
Filling cooling system
KV991J0010
(J-23688)
Engine coolant refractometer
Checking concentration of ethylene glycol in
engine coolant
NT046
S-NT052
S-NT564
LMA053
WBIA0539E
2010 Pathfinder
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