Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Murano 2003-2007.2009 Approved Nissan Murano 2003 pg
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POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
K ELECTRICAL
A
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
SECTION PG B
C
D
E
CONTENTS
POWER SUPPLY ROUTING CIRCUIT ..................... 3 . GROUND .................................................................. 47
. F
Schematic ............................................................... 3
. Ground Distribution ................................................ 47
.
Wiring Diagram - POWER - .................................... 4 . MAIN HARNESS ................................................ 47 .
BATTERY POWER SUPPLY - IGNITION SW. IN ENGINE ROOM HARNESS ............................... 50 . G
ANY POSITION .................................................... 4 . ENGINE CONTROL HARNESS ......................... 52 .
ACCESSORY POWER SUPPLY - IGNITION SW. BODY HARNESS ............................................... 53 .
IN "ACC" OR "ON" ............................................... 9 . BODY NO.2 HARNESS ..................................... 55 .
H
IGNITION POWER SUPPLY - IGNITION SW. IN HARNESS ................................................................ 56
.
"ON" AND/OR "START" ...................................... 10 . Harness Layout ..................................................... 56
.
Fuse ...................................................................... 15
. HOW TO READ HARNESS LAYOUT ................ 56 .
Fusible Link ........................................................... 15
. OUTLINE ............................................................ 57
. I
Circuit Breaker ...................................................... 15
. MAIN HARNESS ................................................ 58 .
IPDM E/R (INTELLIGENT POWER DISTRIBUTION ENGINE ROOM HARNESS ............................... 60 .
MODULE ENGINE ROOM) ..................................... 16 . ENGINE CONTROL HARNESS ......................... 63 . J
System Description ............................................... 16 . BODY HARNESS ............................................... 65 .
SYSTEMS CONTROLLED BY IPDM E/R .......... 16 . BODY NO.2 HARNESS ..................................... 67 .
CAN COMMUNICATION LINE CONTROL ........ 16 . ROOM LAMP HARNESS ................................... 68 .
PG
IPDM E/R STATUS CONTROL .......................... 17 . FRONT DOOR HARNESS ................................. 69 .
CAN Communication System Description ............. 18 . REAR DOOR HARNESS ................................... 70 .
CAN Communication Unit For 2WD Models ......... 18 . BACK DOOR HARNESS ................................... 71 .
TYPE 1/TYPE 2/TYPE 3/TYPE 4/TYPE 5/TYPE Wiring Diagram Codes (Cell Codes) ..................... 72 . L
6/TYPE 7/TYPE 8 .............................................. 19 . ELECTRICAL UNITS LOCATION ........................... 75 .
TYPE 9/TYPE10/TYPE 11/TYPE 12/TYPE 13/ Electrical Units Location ........................................ 75 .
TYPE 14/TYPE 15/TYPE 16 .............................. 24 . ENGINE COMPARTMENT ................................. 75 . M
CAN Communication Unit For AWD Models ......... 29 . PASSENGER COMPARTMENT ........................ 76 .
TYPE 17/TYPE 18/TYPE 19/TYPE 20/TYPE 21/ LUGGAGE COMPARTMENT ............................. 78 .
TYPE 22/TYPE 23/TYPE 24 .............................. 29 . HARNESS CONNECTOR ........................................ 79 .
TYPE 25/TYPE26/TYPE 27/TYPE 28/TYPE 29/ Description ............................................................. 79
.
TYPE 30/TYPE 31/TYPE 32 .............................. 35 . HARNESS CONNECTOR (TAB-LOCKING
Function of Detecting Ignition Relay Malfunction ... 40 TYPE) ................................................................. 79
.
Auto Active Test .................................................... 41. HARNESS CONNECTOR (SLIDE-LOCKING
DESCRIPTION ................................................... 41 . TYPE) ................................................................. 80
.
OPERATION PROCEDURE .............................. 41 . JOINT CONNECTOR (J/C) ...................................... 81 .
INSPECTION IN AUTO ACTIVE TEST MODE ... 41 Terminal Arrangement ........................................... 81 .
Schematic ............................................................. 43
. ELECTRICAL UNITS ............................................... 82 .
IPDM E/R Terminal Arrangement .......................... 44 . Terminal Arrangement ........................................... 82 .
IPDM E/R Power/Ground Circuit Inspection ......... 45 . SMJ (SUPER MULTIPLE JUNCTION) .................... 84 .
Removal and Installation of IPDM E/R .................. 46 . Terminal Arrangement ........................................... 84 .
REMOVAL .......................................................... 46 .
INSTALLATION .................................................. 46 .
Revision; 2004 April PG-1 2003 Murano
STANDARDIZED RELAY ......................................... 85 . FUSE BLOCK - JUNCTION BOX (J/B) ...................87 .
Description ............................................................. 85
. Terminal Arrangement ............................................87
.
NORMAL OPEN, NORMAL CLOSED AND FUSE, FUSIBLE LINK AND RELAY BOX ...............88 .
MIXED TYPE RELAYS ....................................... 85 . Terminal Arrangement ............................................88
.
TYPE OF STANDARDIZED RELAYS ................. 85 .
Revision; 2004 April PG-2 2003 Murano
POWER SUPPLY ROUTING CIRCUIT
POWER SUPPLY ROUTING CIRCUIT PFP:24110
A
Schematic AKS007HE
B
C
D
E
F
G
H
I
J
PG
L
M
TKWB0136E
Revision; 2004 April PG-3 2003 Murano
POWER SUPPLY ROUTING CIRCUIT
Wiring Diagram - POWER - AKS007HF
BATTERY POWER SUPPLY - IGNITION SW. IN ANY POSITION
TKWA0794E
Revision; 2004 April PG-4 2003 Murano
POWER SUPPLY ROUTING CIRCUIT
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWB0137E
Revision; 2004 April PG-5 2003 Murano
POWER SUPPLY ROUTING CIRCUIT
TKWA0796E
Revision; 2004 April PG-6 2003 Murano
POWER SUPPLY ROUTING CIRCUIT
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWA0797E
Revision; 2004 April PG-7 2003 Murano
POWER SUPPLY ROUTING CIRCUIT
TKWA0798E
Revision; 2004 April PG-8 2003 Murano
POWER SUPPLY ROUTING CIRCUIT
ACCESSORY POWER SUPPLY - IGNITION SW. IN "ACC" OR "ON"
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWA0799E
Revision; 2004 April PG-9 2003 Murano
POWER SUPPLY ROUTING CIRCUIT
IGNITION POWER SUPPLY - IGNITION SW. IN "ON" AND/OR "START"
TKWA0800E
Revision; 2004 April PG-10 2003 Murano
POWER SUPPLY ROUTING CIRCUIT
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWA0801E
Revision; 2004 April PG-11 2003 Murano
POWER SUPPLY ROUTING CIRCUIT
TKWA0802E
Revision; 2004 April PG-12 2003 Murano
POWER SUPPLY ROUTING CIRCUIT
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWB0138E
Revision; 2004 April PG-13 2003 Murano
POWER SUPPLY ROUTING CIRCUIT
TKWA0804E
Revision; 2004 April PG-14 2003 Murano
POWER SUPPLY ROUTING CIRCUIT
Fuse AKS007HG
A
q If fuse is blown, be sure to eliminate cause of incident before
installing new fuse.
q Use fuse of specified rating. Never use fuse of more than speci-
fied rating. B
q Do not partially install fuse; always insert it into fuse holder prop-
erly.
C
q Remove fuse for "ELECTRICAL PARTS (BAT)" if vehicle is not
used for a long period of time.
D
CEL083
Fusible Link AKS007HH
E
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: F
q 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- G
dent.
q Never wrap outside of fusible link with vinyl tape. Important:
Never let fusible link touch any other wiring harness, vinyl H
or rubber parts. CKIA0274E
Circuit Breaker AKS007HI
The PTC thermistor generates heat in response to current flow. The I
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 J
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.
PG
L
SEL109W
M
Revision; 2004 April PG-15 2003 Murano
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7
System Description AKS004CK
q 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.
q IPDM E/R-integrated control circuit performs ON-OFF operation of relay, CAN communication control, oil
pressure switch signal reception, etc.
q 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:
q Head lamps (Hi, Lo)
q Parking lamps
q Tail lamps
q 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
q 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.
q Operation of control parts by IPDM E/R during fail-safe mode is as follows:
Controlled system Fail-safe mode
q With the ignition switch ON, the headlamp (low) is ON.
Headlamp
q With the ignition switch OFF, the headlamp (low) is OFF.
Tail and parking lamps Tail and parking lamps OFF.
q With the ignition switch ON, the cooling fan HI operates.
Cooling fan
q With the ignition switch OFF, the cooling fan stops.
Until the ignition switch is turned off, the front wiper LO and HI remains in the same status it
Front wiper
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
Revision; 2004 April PG-16 2003 Murano
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R STATUS CONTROL
In order to save power, IPDM E/R switches status by itself based on each operating condition. A
1. CAN communication status
q CAN communication is normally performed with other control units.
B
q Individual unit control by IPDM E/R is normally performed.
q When sleep request signal is received from BCM, mode is switched to sleep waiting status.
2. Sleep waiting status C
q Process to stop CAN communication is activated.
q 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. D
3. Sleep status
q IPDM E/R operates in low current-consumption mode.
q CAN communication is stopped. E
q When a change in CAN communication signal is detected, mode switches to CAN communication sta-
tus.
q When a change hood switch signal is detected, mode switches to CAN communication status. F
G
H
I
J
PG
L
M
Revision; 2004 April PG-17 2003 Murano
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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.
Body type Wagon
Axle 2WD
Engine VQ35DE
Transmission CVT
Brake control ABS VDC
Low tire pressure warning
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