Nissan Pathfinder (2009 year). Instruction — part 530
PCS-30
< ECU DIAGNOSIS >
[IPDM E/R]
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
If No CAN Communication Is Available With BCM
IGNITION RELAY MALFUNCTION DETECTION FUNCTION
• IPDM E/R monitors the voltage at the contact circuit and excitation coil circuit of the ignition relay inside it.
• IPDM E/R judges the ignition relay error if the voltage differs between the contact circuit and the excitation
coil circuit.
• If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay for 10 minutes to
alert the user to the ignition relay malfunction when the ignition switch is turned OFF.
NOTE:
The tail lamp turns OFF when the ignition switch is turned ON.
FRONT WIPER CONTROL
IPDM E/R detects front wiper stop position by a front wiper auto stop signal.
When a front wiper auto stop signal is in the conditions listed below, IPDM E/R stops power supply to wiper
after repeating a front wiper 10 second activation and 20 second stop five times.
NOTE:
This operation status can be confirmed on the IPDM E/R “DATA MONITOR” that displays “Block” for the item
“WIP PROT” while the wiper is stopped.
STARTER MOTOR PROTECTION FUNCTION
IPDM E/R turns OFF the starter control relay to protect the starter motor when the starter control relay remains
active for 90 seconds.
Control part
Fail-safe in operation
Cooling fan
• Turns ON the cooling fan relay when the ignition switch is turned ON
• Turns OFF the cooling fan relay when the ignition switch is turned OFF
Control part
Fail-safe in operation
Headlamp
• Turns ON the headlamp low relay when the ignition switch is turned ON
• Turns OFF the headlamp low relay when the ignition switch is turned OFF
• Headlamp (LH/RH) high relays OFF
• Parking lamps
• License plate lamps
• Tail lamps
• Turns ON the tail lamp relay when the ignition switch is turned ON
• Turns OFF the tail lamp relay when the ignition switch is turned OFF
Front wiper
• The status just before activation of fail-safe control is maintained until the ignition
switch is turned OFF while the front wiper is operating at LO or HI speed.
• The wiper is operated at LO speed until the ignition switch is turned OFF if the fail-
safe control is activated while the front wiper is set in the INT mode and the front wiper
motor is operating.
Rear window defogger
Rear window defogger relay OFF
A/C compressor
A/C relay OFF
Front fog lamps (if equipped)
Front fog lamp relay OFF
Ignition switch
Ignition relay
Tail lamp relay
ON
ON
—
OFF
OFF
—
Ignition switch
Front wiper switch
Auto stop signal
ON
OFF
Front wiper stop position signal cannot be
input 10 seconds.
ON
The signal does not change for 10 seconds.
2009 Pathfinder
PCS
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PCS-31
< ECU DIAGNOSIS >
[IPDM E/R]
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DTC Index
INFOID:0000000003935636
NOTE:
The details of TIME display are as follows.
• CRNT: The malfunctions that are detected now
• 1 - 39: The number is indicated when it is normal at present and a malfunction was detected in the past. It
increases like 0
→
1
→
2 ··· 38
→
39 after returning to the normal condition whenever IGN OFF
→
ON. It is
fixed to 39 until the self-diagnosis results are erased if it is over 39. It returns to 0 when a malfunction is
detected again in the process.
CONSULT-III display
Fail-safe
TIME
NOTE
Refer to
No DTC is detected.
further testing
may be required.
—
—
—
—
U1000: CAN COMM CIRCUIT
×
CRNT
1 – 39
2009 Pathfinder
PCS-32
< PRECAUTION >
[IPDM E/R]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003935637
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.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000004454809
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.
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.
2009 Pathfinder
PCS
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PCS-33
< REMOVAL AND INSTALLATION >
[IPDM E/R]
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REMOVAL AND INSTALLATION
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)
Removal and Installation of IPDM E/R
INFOID:0000000003935638
REMOVAL
1.
Disconnect the negative battery terminal.
2.
Remove the IPDM E/R upper cover.
3.
Release 2 clips and pull the IPDM E/R up from case.
4.
Disconnect the IPDM E/R connectors and remove the IPDM E/
R.
INSTALLATION
Installation is in the reverse order of removal.
WKIA3352E
LKIA0421E
2009 Pathfinder
PG
PG-1
ELECTRICAL & POWER CONTROL
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SECTION
PG
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CONTENTS
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
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 . . . . . . . . . . . . . . . .....
Special Repair 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) . . . .
Fuse, Connector and Terminal Arrangement . . ..
ON-VEHICLE REPAIR . . . . . . . . .
BATTERY . . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . . .
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . .
BATTERY . . . . . . . . . . . . . . ..
Battery . . . . . . . . . . . . . . . . . .
2009 Pathfinder
PG-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003935666
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.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000004448916
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.
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:0000000003935667
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-
2009 Pathfinder
PG
PRECAUTIONS
PG-3
< PRECAUTION >
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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.
2009 Pathfinder
PG-4
< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service Tool
INFOID:0000000004688008
Commercial Service Tool
INFOID:0000000003935669
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 instruction.
AWIIA1239ZZ
Tool number
Tool name
Description
Power tool
Loosening bolts and nuts
PBIC0190E
2009 Pathfinder
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