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K ELECTRICAL

B
SECTION
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS C

E
CONTENTS
PRECAUTIONS ......................................................... 3. GROUND .................................................................. 16
. F
Precautions for Supplemental Restraint System Ground Distribution ................................................ 16 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- MAIN HARNESS ................................................ 16 .
SIONER" ................................................................. 3
. ENGINE ROOM HARNESS ............................... 18 . G
Wiring Diagrams and Trouble Diagnosis ................. 3 . ENGINE NO. 2 HARNESS ................................. 22 .
HARNESS CONNECTOR .......................................... 4 . GENERATOR HARNESS ................................... 23 .
Description .............................................................. 4
. ENGINE CONTROL HARNESS ......................... 24 .
H
HARNESS CONNECTOR (TAB-LOCKING BODY HARNESS ............................................... 27 .
TYPE) ................................................................... 4
. BODY NO. 2 HARNESS .................................... 28 .
HARNESS CONNECTOR (SLIDE-LOCKING BACK DOOR NO. 2 HARNESS ......................... 29 .
TYPE) ................................................................... 5
. ELECTRICAL UNITS LOCATION ........................... 30 . I
HARNESS CONNECTOR (DIRECT-CONNECT Engine Compartment ............................................. 30 .
SRS COMPONENT TYPE) .................................. 5 . Passenger Compartment ....................................... 31 .
STANDARDIZED RELAY .......................................... 6 . HARNESS LAYOUT ................................................. 33 . J
Description .............................................................. 6
. How to Read Harness Layout ................................ 33 .
NORMAL OPEN, NORMAL CLOSED AND TO USE THE GRID REFERENCE ..................... 33 .
MIXED TYPE RELAYS ........................................ 6 . CONNECTOR SYMBOL .................................... 33 . PG
TYPE OF STANDARDIZED RELAYS .................. 6 . Outline ................................................................... 34
.
POWER SUPPLY ROUTING ..................................... 8 . Main Harness ........................................................ 35.
Circuit Diagram ....................................................... 8
. Engine Room Harness .......................................... 38 .
Wiring Diagram -- POWER -- .............................. 10 . KA24DE .............................................................. 38
. L
BATTERY POWER SUPPLY -- IGNITION SW. VG33E AND VG33ER ........................................ 41 .
IN ANY POSITION ............................................. 10 . Engine Control Harness ........................................ 44 .
ACCESSORY POWER SUPPLY -- IGNITION KA24DE .............................................................. 44
. M
SW. IN ACC OR ON ........................................... 12 . VG33E ................................................................ 46
.
IGNITION POWER SUPPLY -- IGNITION SW. VG33ER ............................................................. 48
.
IN ON AND/OR START ...................................... 13 . Engine No. 2 Harness ........................................... 50 .
Inspection .............................................................. 15
. KA24DE .............................................................. 50
.
FUSE .................................................................. 15
. VG33E ................................................................ 51
.
FUSIBLE LINK ................................................... 15 . VG33ER ............................................................. 52
.
CIRCUIT BREAKER .......................................... 15 . Body Harness ........................................................ 53.
Body No. 2 and Chassis Harness .......................... 54 .
Room Lamp Harness ............................................. 55 .
Front Door Harness ............................................... 55 .
Rear Door Harness ................................................ 56 .
Back Door Harness ............................................... 58 .
Wiring Diagram Codes (Cell Codes) ..................... 59 .
SUPER MULTIPLE JUNCTION (SMJ) .................... 62 .
Installation ............................................................. 62
.
Terminal Arrangement ........................................... 63 .

PG-1
FUSE BLOCK -- JUNCTION BOX (J/B) ................. 64 . ELECTRICAL UNITS ...............................................66
.
Terminal Arrangement ........................................... 64
. Terminal Arrangement ............................................66
.
FUSE AND FUSIBLE LINK BOX ............................. 65 .
Terminal Arrangement ........................................... 65
.

PG-2
PRECAUTIONS

PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS003OC

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
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 C
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 SRS and SB section of this Service Man-
ual.
WARNING: D
q 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 per-
formed by an authorized NISSAN/INFINITI dealer. E
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. F
q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
G
Wiring Diagrams and Trouble Diagnosis EKS0036M

When you read wiring diagrams, refer to the following:
H
q GI-13, "How to Read Wiring Diagrams", and
q PG-8, "POWER SUPPLY ROUTING" for power distribution circuit.
When you perform trouble diagnosis, refer to the following: I
q GI-9, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES", and
q GI-25, "How to Perform Efficient Diagnosis for an Electrical Incident".
Check for any Service bulletins before servicing the vehicle. J

PG-3
HARNESS CONNECTOR

HARNESS CONNECTOR PFP:24010

Description EKS003NX

HARNESS CONNECTOR (TAB-LOCKING TYPE)
q The tab-locking type connectors help prevent accidental looseness or disconnection.
q The tab-locking type connectors are disconnected by pushing or lifting the locking tab(s). Refer to the
illustration below.
Refer to the next page for description of the slide-locking type connector.
CAUTION:
Do not pull the harness or wires when disconnecting the connector.
[Example]

SEL769DA

PG-4
HARNESS CONNECTOR

HARNESS CONNECTOR (SLIDE-LOCKING TYPE)
q A new style slide-locking type connector is used on certain systems and components, especially those A
related to OBD.
q The slide-locking type connectors help prevent incomplete locking and accidental looseness or discon-
nection. B
q The slide-locking type connectors are disconnected by pushing or pulling the slider. Refer to the illustra-
tion below.
CAUTION: C
q Do not pull the harness or wires when disconnecting the connector.
q Be careful not to damage the connector support bracket when disconnecting the connector.
[Example] D

AEL299C

HARNESS CONNECTOR (DIRECT-CONNECT SRS COMPONENT TYPE)
q SRS direct-connect type harness connectors are used on cer-
tain SRS components such as air bag modules and seat belt
pre-tensioners.
q Always pull up to release black locking tab prior to removing
connector from SRS component.
q Always push down to lock black locking tab after installing con-
nector to SRS component. When locked, the black locking tab is
level with the connector housing.
CAUTION:
q Do not pull the harness or wires when removing connectors
from SRS components. WHIA0103E

PG-5
STANDARDIZED RELAY

STANDARDIZED RELAY PFP:25230

Description EKS0036P

NORMAL OPEN, NORMAL CLOSED AND MIXED TYPE RELAYS
Relays can mainly be divided into three types: normal open, normal closed and mixed type relays.

SEL881H

TYPE OF STANDARDIZED RELAYS

SEL882H

1M 1 Make 2M 2 Make
1T 1 Transfer 1M

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