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
C
D
E
F
G
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A
B
PG
Revision; 2004 April
2003 Murano
TKWA0797E
PG-8
POWER SUPPLY ROUTING CIRCUIT
Revision; 2004 April
2003 Murano
TKWA0798E
POWER SUPPLY ROUTING CIRCUIT
PG-9
C
D
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PG
Revision; 2004 April
2003 Murano
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
C
D
E
F
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A
B
PG
Revision; 2004 April
2003 Murano
TKWA0801E
PG-12
POWER SUPPLY ROUTING CIRCUIT
Revision; 2004 April
2003 Murano
TKWA0802E
POWER SUPPLY ROUTING CIRCUIT
PG-13
C
D
E
F
G
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A
B
PG
Revision; 2004 April
2003 Murano
TKWB0138E
PG-14
POWER SUPPLY ROUTING CIRCUIT
Revision; 2004 April
2003 Murano
TKWA0804E
POWER SUPPLY ROUTING CIRCUIT
PG-15
C
D
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PG
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
C
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PG
Revision; 2004 April
2003 Murano
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
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
C
D
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F
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PG
Revision; 2004 April
2003 Murano
●
Type7
●
Type8
SKIA4908E
SKIA4909E
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