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Nissan Pathfinder (2010 year). Manual - part 521

PCS

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

PCS-33

< REMOVAL AND INSTALLATION >

[IPDM E/R]

REMOVAL AND INSTALLATION

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)

Removal and Installation of IPDM E/R

INFOID:0000000005260298

REMOVAL

1. Disconnect the negative battery terminal.
2. Remove the IPDM E/R upper cover.

3. Release two clips and pull the IPDM E/R up from case.
4. Disconnect the IPDM E/R connectors and remove the IPDM E/

INSTALLATION

Installation is in the reverse order of removal.

WKIA3352E

LKIA0421E

2010 Pathfinder

PG-1

ELECTRICAL & POWER CONTROL

SECTION

CONTENTS

POWER SUPPLY, GROUND & CIRCUIT ELEMENTS

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

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

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

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

Precaution for Power Generation Variable Voltage
Control System ..........................................................

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

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

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

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

BASIC INSPECTION ....................................

BATTERY ............................................................

How to Handle Battery ..............................................

Work Flow .................................................................

INSPECTION AND ADJUSTMENT .....................

ADDITIONAL SERVICE WHEN REMOVING BAT-
TERY NEGATIVE TERMINAL .....................................

ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL : Special Re-
pair Requirement .......................................................

COMPONENT DIAGNOSIS ..........................

POWER SUPPLY ROUTING CIRCUIT ...............

Wiring Diagram—Battery Power Supply— ................

Wiring Diagram—Accessory Power Supply— ........

Wiring Diagram — Ignition Power Supply — ..........

Fuse ........................................................................

Fusible Link .............................................................

Circuit Breaker (Built Into BCM) ..............................

GROUND CIRCUIT ...........................................

Ground Distribution ..................................................

HARNESS .........................................................

Harness Layout .......................................................

ELECTRICAL UNITS LOCATION ....................

Electrical Units Location ..........................................

HARNESS CONNECTOR .................................

Description ...............................................................

STANDARDIZED RELAY .................................

Description ...............................................................

FUSE BLOCK-JUNCTION BOX (J/B) ..............

Terminal Arrangement .............................................

FUSE AND FUSIBLE LINK BOX ......................

Terminal Arrangement .............................................

FUSE AND RELAY BOX ..................................

Terminal Arrangement .............................................

IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) ................

IPDM E/R Terminal Arrangement - Type A .............

IPDM E/R Terminal Arrangement - Type B .............

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

BATTERY ..........................................................

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

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

BATTERY ..........................................................

Battery .....................................................................

2010 Pathfinder

PG-2

< PRECAUTION >

PRECAUTIONS

PRECAUTION

PRECAUTIONS

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

INFOID:0000000005531983

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:0000000005260646

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

PG-3

< PRECAUTION >

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 Power Generation Variable Voltage Control System

INFOID:0000000005260647

CAUTION:

For this model, the battery current sensor that is installed to the negative battery cable measures the

charging/discharging current of the battery and performs various engine controls. If an electrical com-

ponent is connected directly to the negative battery terminal, the current flowing through that compo-

nent will not be measured by the battery current sensor. This condition may cause a malfunction of

the engine control system and battery discharge may occur. Do not connect an electrical component

or ground wire directly to the battery terminal.

2010 Pathfinder

PG-4

< PREPARATION >

PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000005260648

Commercial Service Tool

INFOID:0000000005260649

Tool number
(Kent-Moore No.)
Tool name

Description

—
(—) Model GR-8
Multitasking Battery Diagnostic Sta-
tion

Tests batteries, starting and charging sys-
tems.
For operating instructions, refer to diagnostic
station instruction manual.

AWIIA1239ZZ

Tool number
Tool name

Description

Power tool

Loosening bolts and nuts

PBIC0190E

2010 Pathfinder

BATTERY

PG-5

< BASIC INSPECTION >

BASIC INSPECTION

BATTERY

How to Handle Battery

INFOID:0000000005260650

CAUTION:

• If it becomes necessary to start the engine with a booster battery and jumper cables, use a 12-volt

booster battery.

• After connecting battery cables, ensure that they are tightly clamped to battery terminals for good

contact.

• Never add distilled water through the hole used to check specific gravity.

METHODS OF PREVENTING OVER-DISCHARGE

The following precautions must be taken to prevent over-discharging a battery.

• The battery surface (particularly its top) should always be kept

clean and dry.

• The terminal connections should be clean and tight.

• At every routine maintenance, check the electrolyte level.

This also applies to batteries designated as “low maintenance” and

“maintenance-free”.

• When the vehicle is not going to be used over a long period of

time, disconnect the battery cable from the negative terminal. (If

the vehicle has an extended storage switch, turn it off.)

• Check the charge condition of the battery.

Periodically check the specific gravity of the electrolyte. Keep a

close check on charge condition to prevent over-discharge.

CHECKING ELECTROLYTE LEVEL

WARNING:

Never allow battery fluid to come in contact with skin, eyes, fabrics, or painted surfaces. After touch-

ing a battery, never touch or rub your eyes until you have thoroughly washed your hands. If acid con-

tacts eyes, skin or clothing, immediately flush with water for 15 minutes and seek medical attention.

MEL040F

ELA0349D

MEL042F

2010 Pathfinder

PG-6

< BASIC INSPECTION >

BATTERY

• Remove the cell plug using a suitable tool.

• Add distilled water up to the MAX level.

Sulphation

A battery will be completely discharged if it is left unattended

for a long time and the specific gravity will become less than

1.100. This may result in sulphation on the cell plates.

To determine if a battery has been “sulphated”, note its voltage

and current when charging it. As shown in the figure, less cur-

rent and higher voltage are observed in the initial stage of

charging sulphated batteries.

A sulphated battery may sometimes be brought back into ser-

vice by means of a long, slow charge, 12 hours or more, fol-

lowed by a battery capacity test.

SPECIFIC GRAVITY CHECK

1. Read hydrometer and thermometer indications at eye level.
2. Use the chart below to correct your hydrometer reading accord-

ing to electrolyte temperature.

Hydrometer Temperature Correction

MEL043F

PKIA2353E

MEL042FA

Battery electrolyte temperature [

C (

F)]

Add to specific gravity reading

71 (160)

0.032

66 (150)

0.028

60 (140)

0.024

54 (130)

0.020

49 (120)

0.016

43 (110)

0.012

38 (100)

0.008

32 (90)

0.004

27 (80)

21 (70)

−

0.004

16 (60)

−

0.008

10 (50)

−

0.012

4 (40)

−

0.016

−

1 (30)

−

0.020

−

7 (20)

−

0.024

2010 Pathfinder

BATTERY

PG-7

< BASIC INSPECTION >

CHARGING THE BATTERY

CAUTION:

• Never “quick charge” a fully discharged battery.

• Keep the battery away from open flame while it is being charged.

• When connecting the charger, connect the leads first, then turn on the charger. Never turn on the

charger first, as this may cause a spark.

• If battery electrolyte temperature rises above 55

C (131

F), stop charging. Always charge battery at

a temperature below 55

C (131

F).

Charging Rates

Do not charge at more than 50 ampere rate.

NOTE:

The ammeter reading on your battery charger will automatically decrease as the battery charges. This indi-

cates that the voltage of the battery is increasing normally as the state of charge improves. The charging amps

indicated above refer to initial charge rate.

• If, after charging, the specific gravity of any two cells varies more than 0.050, the battery should be replaced.

Work Flow

INFOID:0000000005260651

TROUBLE DIAGNOSIS WITH MULTITASKING BATTERY DIAGNOSTIC STATION

Refer to diagnostic station instruction manual.

−

12 (10)

−

0.028

−

18 (0)

−

0.032

Battery electrolyte temperature [

C (

F)]

Add to specific gravity reading

Corrected specific gravity

Approximate charge condition

1.260 - 1.280

Fully charged

1.230 - 1.250

3/4 charged

1.200 - 1.220

1/2 charged

1.170 - 1.190

1/4 charged

1.140 - 1.160

Almost discharged

1.110 - 1.130

Completely discharged

Amps

Time

1 hour

2 hours

5 hours

10 hours

2010 Pathfinder

Content .. 519 520 521 522 ..