Nissan Murano Z50 (2003 year). Manual - part 246

 

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Nissan Murano Z50 (2003 year). Manual - part 246

 

 

PG-6

POWER SUPPLY ROUTING CIRCUIT

Revision; 2004 April

2003 Murano

TKWA0796E

POWER SUPPLY ROUTING CIRCUIT

PG-7

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Revision; 2004 April

2003 Murano

TKWA0797E

PG-8

POWER SUPPLY ROUTING CIRCUIT

Revision; 2004 April

2003 Murano

TKWA0798E

POWER SUPPLY ROUTING CIRCUIT

PG-9

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Revision; 2004 April

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ACCESSORY POWER SUPPLY - IGNITION SW. IN “ACC” OR “ON”

TKWA0799E

PG-10

POWER SUPPLY ROUTING CIRCUIT

Revision; 2004 April

2003 Murano

IGNITION POWER SUPPLY - IGNITION SW. IN “ON” AND/OR “START”

TKWA0800E

POWER SUPPLY ROUTING CIRCUIT

PG-11

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Revision; 2004 April

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TKWA0801E

PG-12

POWER SUPPLY ROUTING CIRCUIT

Revision; 2004 April

2003 Murano

TKWA0802E

POWER SUPPLY ROUTING CIRCUIT

PG-13

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Revision; 2004 April

2003 Murano

TKWB0138E

PG-14

POWER SUPPLY ROUTING CIRCUIT

Revision; 2004 April

2003 Murano

TKWA0804E

POWER SUPPLY ROUTING CIRCUIT

PG-15

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Revision; 2004 April

2003 Murano

Fuse 

AKS007HG

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

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

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

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

Fusible Link

AKS007HH

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:

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 inci-
dent.

Never wrap outside of fusible link with vinyl tape. Important:
Never let fusible link touch any other wiring harness, vinyl
or rubber parts.

Circuit Breaker 

AKS007HI

The PTC thermistor generates heat in response to current flow. The
temperature (and resistance) of the thermistor element varies with
current flow. Excessive current flow will cause the element's temper-
ature to rise. When the temperature reaches a specified level, the
electrical resistance will rise sharply to control the circuit current.
Reduced current flow will cause the element to cool. Resistance falls
accordingly and normal circuit current flow is allowed to resume.

CEL083

CKIA0274E

SEL109W

PG-16

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

Revision; 2004 April

2003 Murano

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

PFP:284B7

System Description

AKS004CK

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 relay via IPDM E/R control cir-
cuit.

IPDM E/R-integrated control circuit performs ON-OFF operation of relay, CAN communication control, oil
pressure switch signal reception, etc.

It controls operation of each electrical part via 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 line, it receives signal from BCM and controls the following lamps:

Head lamps (Hi, Lo)

Parking lamps

Tail lamps

Front fog lamps

2.

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

3.

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

4.

A/C compressor control
Using CAN communication line, it receives signals from ECM and controls the A/C compressor (magnet
clutch).

5.

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

6.

Horn control
Using CAN communication line, it receives signals from BCM and controls 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 maximum amount of information with minimum wiring. Each control unit can
transmit and receive data, and reads necessary information only.
1.

Fail-safe control

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

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

Controlled system

Fail-safe mode

Headlamp

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

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

Tail and parking lamps

Tail and parking lamps OFF.

Cooling fan

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

With the ignition switch OFF, the cooling fan stops.

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

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

PG-17

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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

CAN communication is normally performed with other control units.

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

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

2.

Sleep waiting status

Process to stop CAN communication is activated.

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

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

CAN communication is stopped.

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

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

PG-18

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

Revision; 2004 April

2003 Murano

CAN Communication System Description

AKS007UG

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicles are equipped with many electronic control units and each control unit shares information and links
with other control units during operation (not independent). In CAN communication, control units are con-
nected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission
with less wiring. Each control unit transmits/receives data but selectively reads required data only.

CAN Communication Unit For 2WD Models

AKS007UH

Go to CAN system, when selecting your car model from the following table. 

×

: Applicable

Body type

Wagon

Axle

2WD

Engine

VQ35DE

Transmission

CVT

Brake control

ABS

VDC

Low tire pressure warning 
system

×

×

×

×

×

×

×

×

Navigation system

×

×

×

×

×

×

×

×

Automatic drive positioner

×

×

×

×

×

×

×

×

CAN communication unit

ECM

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

TCM

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

Low tire pressure warning 
control unit

×

×

×

×

×

×

×

×

Display unit

×

×

×

×

×

×

×

×

Display control unit

×

×

×

×

×

×

×

×

Data link connector

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

BCM

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

Unified meter and A/C amp.

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

Steering angle sensor

×

×

×

×

×

×

×

×

Driver seat control unit

×

×

×

×

×

×

×

×

ABS actuator and electric 
unit (control unit)

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

IPDM E/R

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

CAN communication type

PG-19, "TYPE 1/TYPE 2/TYPE 3/TYPE 4/TYPE 

5/TYPE 6/TYPE 7/TYPE 8"

PG-24, "TYPE 9/TYPE10/TYPE 11/TYPE 12/

TYPE 13/TYPE 14/TYPE 15/TYPE 16"

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

PG-19

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Revision; 2004 April

2003 Murano

TYPE 1/TYPE 2/TYPE 3/TYPE 4/TYPE 5/TYPE 6/TYPE 7/TYPE 8
System Diagram

Type1

Type2

Type3

SKIA4902E

SKIA4903E

SKIA4904E

PG-20

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

Revision; 2004 April

2003 Murano

Type4

Type5

Type6

SKIA4905E

SKIA4906E

SKIA4907E

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

PG-21

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Revision; 2004 April

2003 Murano

Type7

Type8

SKIA4908E

SKIA4909E

 

 

 

 

 

 

 

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