Nissan Pathfinder (2006 year). Manual — part 348

POWER SUPPLY ROUTING CIRCUIT

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2006 Pathfinder

IGNITION POWER SUPPLY — IGNITION SW. IN ON

WKWA4410E

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POWER SUPPLY ROUTING CIRCUIT

2006 Pathfinder

IGNITION POWER SUPPLY — IGNITION SW. IN ON AND/OR START

WKWA4411E

POWER SUPPLY ROUTING CIRCUIT

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2006 Pathfinder

WKWA4412E

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POWER SUPPLY ROUTING CIRCUIT

2006 Pathfinder

WKWA4413E

POWER SUPPLY ROUTING CIRCUIT

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2006 Pathfinder

Fuse

EKS00HM0

●

If fuse is blown, be sure to eliminate cause of incident before
installing new fuse.

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Use fuse of specified rating. Never use fuse of more than speci-
fied rating.

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Do not partially install fuse; always insert it into fuse holder prop-
erly.

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Remove fuse for “ELECTRICAL PARTS (BAT)” if vehicle is not
used for a long period of time.

Fusible Link

EKS00HM1

A melted fusible link can be detected either by visual inspection or by feeling with finger tip. If its condition is
questionable, use circuit tester or test lamp.

CAUTION:

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If fusible link should melt, it is possible that critical circuit (power supply or large current carrying
circuit) is shorted. In such a case, carefully check and eliminate cause of incident.

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Never wrap outside of fusible link with vinyl tape.

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Never let fusible link touch any other wiring harness, vinyl or rubber parts.

Circuit Breaker (Built Into BCM)

EKS00HM2

For example, when current is 30A, the circuit is broken within 8 to 20
seconds.
A circuit breaker is used for the following systems:

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Power windows

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Power door locks

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Remote keyless entry system

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Power sunroof

CEL083

SBF284E

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

2006 Pathfinder

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

PFP:284B7

System Description

EKS00G8E

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IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block
which were originally placed in engine compartment. It controls integrated relays via IPDM E/R control cir-
cuits.

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IPDM E/R-integrated control circuits perform ON-OFF operation of relays, CAN communication control,
etc.

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It controls operation of each electrical component via ECM, BCM and CAN communication lines.

CAUTION:

None of the IPDM E/R integrated relays can be removed.

SYSTEMS CONTROLLED BY IPDM E/R

1.

Lamp control
Using CAN communication lines, it receives signals from the BCM and controls the following lamps:

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Headlamps (High, Low)

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Parking lamps

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Tail and license plate lamps

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Front fog lamps

2.

Wiper control
Using CAN communication lines, it receives signals from the BCM and controls the front wipers.

3.

Daytime light relay control
Using CAN communication lines, it receives signals from the BCM and controls the daytime light relay.

4.

Generator control
Using CAN communication lines, it receives signals from the ECM and controls power generation output.

5.

Rear window defogger relay control
Using CAN communication lines, it receives signals from the BCM and controls the rear window defogger
relay.

6.

A/C compressor control
Using CAN communication lines, it receives signals from the BCM and controls the A/C compressor
(magnetic clutch).

7.

Starter control
Using CAN communication lines, it receives signals from the BCM and controls the starter relay.

8.

Cooling fan control
Using CAN communication lines, it receives signals from the ECM and controls the cooling fan relays.

9.

Horn control
Using CAN communication lines, it receives signals from the BCM and controls the horn relay.

CAN COMMUNICATION LINE CONTROL

With CAN communication, by connecting each control unit using two communication lines (CAN L-line, CAN
H-line), it is possible to transmit a maximum amount of information with minimum wiring. Each control unit can
transmit and receive data, and reads necessary information only.

1.

Fail-safe control

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When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control.
After CAN communication returns to normal operation, it also returns to normal control.

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Operation of control parts by IPDM E/R during fail-safe mode is as follows:

Controlled system

Fail-safe mode

Headlamp

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With the ignition switch ON, the headlamp low is ON.

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With the ignition switch OFF, the headlamp low is OFF.

Tail, license plate and parking lamps

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With the ignition switch ON, the tail lamp relay is ON.

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With the ignition switch OFF, the tail lamp relay is OFF.

Cooling fan

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With the ignition switch ON, the cooling fan HI operates.

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With the ignition switch OFF, the cooling fan stops.

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

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2006 Pathfinder

IPDM E/R STATUS CONTROL

In order to save power, IPDM E/R switches status by itself based on each operating condition.
1.

CAN communication status

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CAN communication is normally performed with other control units.

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Individual unit control by IPDM E/R is normally performed.

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When sleep request signal is received from BCM, mode is switched to sleep waiting status.

2.

Sleep waiting status

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Process to stop CAN communication is activated.

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All systems controlled by IPDM E/R are stopped. When 3 seconds have elapsed after CAN communi-
cation with other control units is stopped, mode switches to sleep status.

3.

Sleep status

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IPDM E/R operates in low current-consumption mode.

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CAN communication is stopped.

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When a change in CAN communication signal is detected, mode switches to CAN communication sta-
tus.

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When a change in ignition switch signal is detected, mode switches to CAN communication status.

CAN Communication System Description

EKS00G8F

Refer to

LAN-25, "CAN COMMUNICATION"

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Function of Detecting Ignition Relay Malfunction

EKS00G8G

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When the integrated ignition relay is stuck in a "closed contact" position and cannot be turned OFF, IPDM
E/R turns ON tail and parking lamps for 10 minutes to indicate IPDM E/R malfunction.

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When the state of the integrated ignition relay does not agree with the state of the ignition switch signal
received via CAN communication, the IPDM E/R activates the tail lamp relay.

NOTE:
When the ignition switch is turned ON, the tail lamps are OFF.

Front wiper

Until the ignition switch is turned off, the front wiper LO and HI remains in the same status it
was in just before fail

−

safe control was initiated.

Rear window defogger

Rear window defogger relay OFF

A/C compressor

A/C compressor OFF

Front fog lamps

Front fog lamp relay OFF

Controlled system

Fail-safe mode

Ignition switch signal

Ignition relay status

Tail lamp relay

ON

ON —

OFF

OFF —

ON

OFF

—

OFF

ON ON

(10

minutes)

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

2006 Pathfinder

CONSULT-II Function (IPDM E/R)

EKS00G8H

CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.

CONSULT-II BASIC OPERATION

CAUTION:

If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.

1.

With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.

2.

Touch “START (NISSAN BASED VHCL)”.

3.

Touch “IPDM E/R” on “SELECT SYSTEM” screen.

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If “IPDM E/R” is not displayed, go to

GI-40, "CONSULT-II Data

Link Connector (DLC) Circuit"

.

IPDM E/R diagnostic Mode

Description

SELF-DIAG RESULTS

Displays IPDM E/R self-diagnosis results.

DATA MONITOR

Displays IPDM E/R input/output data in real time.

CAN DIAG SUPPORT MNTR

The result of transmit/receive diagnosis of CAN communication can be read.

ACTIVE TEST

Operation of electrical loads can be checked by sending drive signal to them.

BBIA0538E

BCIA0029E

BCIA0030E