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K ELECTRICAL
A
B
SECTION
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS C
D
E
CONTENTS
PRECAUTIONS ......................................................... 2. ROOM LAMP HARNESS ................................... 37 . F
Precautions for Supplemental Restraint System FRONT DOOR HARNESS ................................. 38 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- REAR DOOR HARNESS ................................... 39 .
SIONER" ................................................................. 2
. Wiring Diagram Codes (Cell Codes) ..................... 40 . G
POWER SUPPLY ROUTING ..................................... 3 . ELECTRICAL UNITS LOCATION ........................... 43 .
Schematic ............................................................... 3
. Electrical Units Location ........................................ 43 .
Wiring Diagram -- POWER -- ................................ 5 . ENGINE COMPARTMENT ................................. 43 .
H
BATTERY POWER SUPPLY -- IGNITION SW. PASSENGER COMPARTMENT ........................ 44 .
IN ANY POSITION ............................................... 5 . Fuse ....................................................................... 46
.
ACCESSORY POWER SUPPLY -- IGNITION Fusible Link ........................................................... 46
.
SW. IN "ACC" OR "ON" ........................................ 8 . Circuit Breaker ....................................................... 46
. I
IGNITION POWER SUPPLY -- IGNITION SW. HARNESS CONNECTOR ........................................ 47 .
IN "ON" ................................................................. 9
. Description ............................................................. 47
.
IGNITION POWER SUPPLY -- IGNITION SW. HARNESS CONNECTOR (TAB-LOCKING J
IN "ON" AND/OR "START" ................................. 10 . TYPE) ................................................................. 47
.
GROUND ................................................................. 13
. HARNESS CONNECTOR (SLIDE-LOCKING
Ground Distribution ............................................... 13. TYPE) ................................................................. 48
. PG
MAIN HARNESS ................................................ 13 . HARNESS CONNECTOR (DIRECT-CONNECT
ENGINE ROOM HARNESS ............................... 15 . SRS COMPONENT TYPE) ................................ 49 .
ENGINE CONTROL HARNESS ........................ 17 . JOINT CONNECTOR ............................................... 50 .
BODY HARNESS ............................................... 19 . Terminal Arrangement ........................................... 50 . L
REAR WINDOW DEFOGGER GROUND HAR- ELECTRICAL UNITS ............................................... 51 .
NESS ................................................................. 20
. Terminal Arrangement ........................................... 51 .
ROOM HARNESS .............................................. 21 . STANDARDIZED RELAY ......................................... 52 . M
HARNESS ................................................................ 22
. Description ............................................................. 52
.
Harness Layout ..................................................... 22
. NORMAL OPEN, NORMAL CLOSED AND
HOW TO READ HARNESS LAYOUT ................ 22 . MIXED TYPE RELAYS ....................................... 52 .
OUTLINE ............................................................ 23
. TYPE OF STANDARDIZED RELAYS ................ 52 .
MAIN HARNESS ................................................ 24 . FUSE BLOCK -- JUNCTION BOX (J/B) ................ 54 .
ENGINE ROOM HARNESS ............................... 26 . Terminal Arrangement ........................................... 54 .
ENGINE CONTROL HARNESS ........................ 29 . FUSE AND FUSIBLE LINK BOX ............................. 55 .
BODY HARNESS ............................................... 35 . Terminal Arrangement ........................................... 55 .
PG-1
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS00658
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
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. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
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.
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.
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.
PG-2
POWER SUPPLY ROUTING
POWER SUPPLY ROUTING PFP:24110
A
Schematic EKS003AZ
For detailed ground distribution information, refer to PG-13, "Ground Distribution" .
B
C
D
E
F
G
H
I
J
PG
L
M
WKWA1145E
PG-3
POWER SUPPLY ROUTING
WKWA1146E
PG-4
POWER SUPPLY ROUTING
Wiring Diagram -- POWER -- EKS003B0
BATTERY POWER SUPPLY -- IGNITION SW. IN ANY POSITION A
B
C
D
E
F
G
H
I
J
PG
L
M
WKWA0491E
PG-5
POWER SUPPLY ROUTING
WKWA0057E
PG-6
POWER SUPPLY ROUTING
A
B
C
D
E
F
G
H
I
J
PG
L
M
WKWA0492E
PG-7
POWER SUPPLY ROUTING
ACCESSORY POWER SUPPLY -- IGNITION SW. IN "ACC" OR "ON"
WKWA0250E
PG-8
POWER SUPPLY ROUTING
IGNITION POWER SUPPLY -- IGNITION SW. IN "ON"
A
B
C
D
E
F
G
H
I
J
PG
L
M
WKWA0493E
PG-9
POWER SUPPLY ROUTING
IGNITION POWER SUPPLY -- IGNITION SW. IN "ON" AND/OR "START"
WKWA0494E
PG-10
POWER SUPPLY ROUTING
A
B
C
D
E
F
G
H
I
J
PG
L
M
WKWA0495E
PG-11
POWER SUPPLY ROUTING
WKWA0496E
PG-12
GROUND
GROUND PFP:24080
A
Ground Distribution EKS003B1
MAIN HARNESS
B
C
D
E
F
G
H
I
J
PG
L
M
WKIA0960E
PG-13
GROUND
WKIA0961E
PG-14
GROUND
ENGINE ROOM HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
WKIA0215E
PG-15
GROUND
WKIA0962E
PG-16
GROUND
ENGINE CONTROL HARNESS
QG18DE A
B
C
D
E
F
G
H
I
J
PG
L
M
WKIA0217E
PG-17
GROUND
QR25DE
WKIA0963E
PG-18
GROUND
BODY HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
WKIA0964E
PG-19
GROUND
REAR WINDOW DEFOGGER GROUND HARNESS
LEL434
PG-20
GROUND
ROOM HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
LEL433
PG-21
HARNESS
HARNESS PFP:24010
Harness Layout EKS003B2
HOW TO READ HARNESS LAYOUT
The following Harness Layouts use a map style grid to help locate
connectors on the drawings:
q Main Harness
q Engine Room Harness
q Engine Control Harness
q Body Harness
SEL252V
TO USE THE GRID REFERENCE
1. Find the desired connector number on the connector list.
2. Find the grid reference.
3. On the drawing, find the crossing of the grid reference letter column and number row.
4. Find the connector number in the crossing zone.
5. Follow the line (if used) to the connector.
CONNECTOR SYMBOL
Main symbols of connector (in Harness Layout) are indicated in the below.
Water proof type Standard type
Connector type
Male Female Male Female
q Cavity: Less than 4
q Relay connector
q Cavity: From 5 to 8
q Cavity: More than 9
q Ground terminal etc.
--
PG-22
HARNESS
OUTLINE
A
B
C
D
E
F
G
H
I
J
WKIA1014E
NOTE:
For detailed ground distribution information, refer to PG-13, "Ground Distribution" .
PG
L
M
PG-23
HARNESS
MAIN HARNESS
WKIA1741E
PG-24
HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
WKIA1742E
PG-25
HARNESS
ENGINE ROOM HARNESS
WKIA0967E
PG-26
HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
WKIA0968E
PG-27
HARNESS
WKIA0242E
PG-28
HARNESS
ENGINE CONTROL HARNESS
QG18DE (ULEV) A
B
C
D
E
F
G
H
I
J
PG
L
M
WKIA0969E
PG-29
HARNESS
WKIA0970E
PG-30
HARNESS
QG18DE (SULEV)
A
B
C
D
E
F
G
H
I
J
PG
L
M
WKIA0971E
PG-31
HARNESS
WKIA0972E
PG-32
HARNESS
QR25DE
A
B
C
D
E
F
G
H
I
J
PG
L
M
WKIA0973E
PG-33
HARNESS
WKIA0974E
PG-34
HARNESS
BODY HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
WKIA1743E
PG-35
HARNESS
WKIA1744E
PG-36
HARNESS
ROOM LAMP HARNESS
A
B
C
D
E
F
G
H
I
J
WKIA0380E
PG
L
M
PG-37
HARNESS
FRONT DOOR HARNESS
LH SIDE
WKIA0977E
RH SIDE
WKIA0978E
PG-38
HARNESS
REAR DOOR HARNESS
LH SIDE A
B
C
D
E
F
G
H
I
WKIA2769E
RH SIDE
J
PG
L
M
WKIA2770E
PG-39
HARNESS
Wiring Diagram Codes (Cell Codes) EKS003B3
Use the chart below to find out what each wiring diagram code stands for.
Refer to the wiring diagram code in the alphabetical index to find the location (page number) of each wiring
diagram.
Code Section Wiring Diagram Name
1STSIG AT A/T 1ST Signal
2NDSIG AT A/T 2ND Signal
3RDSIG AT A/T 3RD Signal
4THSIG AT A/T 4TH Signal
ABS BRC Anti-lock Brake System
A/C,M MTC Air Conditioner
A/F EC Air Fuel Ratio (A/F) Sensor 1
A/FH EC Air Fuel Ratio (A/F) Sensor 1 Heater
APPS1 EC Accelerator Pedal Position Sensor
APPS2 EC Accelerator Pedal Position Sensor
APPS3 EC Accelerator Pedal Position Sensor
ASC/BS EC ASCD Brake Switch
ASCBOF EC ASCD Brake Switch
ASCIND EC ASCD Indicator
ASC/SW EC ASCD Steering Switch
AUDIO AV Audio
B/COMP DI Board computer
BACK/L LT Back-up Lamp
BA/FTS AT A/T Fluid Temperature Sensor and TCM Power Supply
BRK/SW EC Brake Switch
CAN AT CAN Communication Line
CAN EC CAN Communication Line
CAN LAN CAN Communication Line
CHARGE SC Charging System
CHIME DI Warning Chime
CIGAR WW Cigarette Lighter
COOL/F EC Cooling Fan Control
DEF GW Rear Window Defogger
DLC EC Data Link Connector
D/LOCK BL Power Door Lock
DTRL LT Headlamp - With Daytime Light System (For Canada)
ECM/PW EC ECM Power Supply For Back-Up
ECTS EC Engine Coolant Temperature Sensor
ENGSS AT Engine Speed Signal
ETC1 EC Electric Throttle Control Function
ETC2 EC Throttle Control Motor Relay
ETC3 EC Throttle Control Motor
F/FOG LT Front Fog Lamp
F/PUMP EC Fuel Pump Control
FTS AT A/T Fluid Temperature Sensor
FTTS EC Fuel Tank Temperature Sensor
PG-40
HARNESS
Code Section Wiring Diagram Name
A
FUEL EC Fuel Injection System Function
HEATER MTC Heater System
H/LAMP LT Headlamp B
H/MIRR GW Heated Mirror
HO2S1 EC Heated Oxygen Sensor 1
HO2S1H EC Heated Oxygen Sensor 1 Heater C
HO2S2 EC Heated Oxygen Sensor 2
HO2S2H EC Heated Oxygen Sensor 2 Heater
D
HORN WW Horn
IATS EC Intake Air Temperature Sensor
IGNSYS EC Ignition Signal E
ILL LT Illumination
INJECT EC Injector
F
INT/L LT Interior, Step, Spot, Vanity Mirror and Trunk Room Lamps
IVC EC Intake Valve Timing Control Solenoid Valve
KEYLES BL Remote Keyless Entry System G
KS EC Knock Sensor
LOAD EC Load Signal
H
LPSV AT Line Pressure Solenoid Valve
MAFS EC Mass Air Flow Sensor
MAIN AT Main Power Supply and Ground Circuit I
MAIN EC Main Power Supply and Ground Circuit
METER DI Speedometer, Tachometer, Temp., and Fuel Gauges
MIL EC Malfunction Indicator Lamp
J
MIRROR GW Power Door Mirror
NATS BL NVIS (Nissan Vehicle Immobilizer System -- NATS) PG
NONDTC AT Non-detectable Items
OVRCSV AT Overrun Clutch Solenoid Valve
PGC/V EC EVAP Canister Purge Volume Control Solenoid Valve L
PHASE EC Camshaft Position Sensor (PHASE)
PNP/SW AT Park/Neutral Position Switch
M
PNP/SW EC Park/Neutral Position Switch
POS EC Crankshaft Position Sensor (POS)
POWER PG Power Supply Routing
PRE/SE EC EVAP Control System Pressure Sensor
PS/SEN EC Power Steering Pressure Sensor
ROOM/L LT Room Lamp
RP/SEN EC Refrigerant Pressure Sensor
SEN/PW EC Sensor Power Supply
SHIFT AT A/T Shift Lock System
SROOF RF Sunroof
SRS SRS Supplemental Restraint System
SSV/A AT Shift Solenoid Valve A
SSV/B AT Shift Solenoid Valve B
PG-41
HARNESS
Code Section Wiring Diagram Name
START SC Starting System
STOP/L LT Stop Lamp
SWL/S EC Swirl Control Valve Position Sensor [QG18DE (SULEV)]
SWL/V EC Swirl Control Valve [QG18DE (SULEV)]
TAIL/L LT Parking, License and Tail Lamps
TCCSIG AT A/T TCC Signal (Lock Up)
TCV AT Torque Converter Clutch Solenoid Valve
TLID BL Trunk Lid Opener
TPS AT Throttle Position Sensor
TPS1 EC Throttle Position Sensor
TPS2 EC Throttle Position Sensor
TPS3 EC Throttle Position Sensor
TRSA/T AT Turbine Revolution Sensor (QR25DE Model)
TURN LT Turn Signal and Hazard Warning Lamps
VIAS EC Variable Air Induction Control System (QR25DE Model)
VEHSEC BL Vehicle Security System
VENT/V EC EVAP Canister Vent Control Valve
VSS EC Vehicle Speed Sensor
VSSA/T AT Vehicle Speed Sensor A/T (Revolution Sensor)
VSSMTR AT Vehicle Speed Sensor MTR
WARN DI Warning Lamps
WINDOW GW Power Window
WIPER WW Front Wiper and Washer
PG-42
ELECTRICAL UNITS LOCATION
ELECTRICAL UNITS LOCATION PFP:25230
A
Electrical Units Location EKS003B4
ENGINE COMPARTMENT
B
C
D
E
F
G
H
I
J
PG
L
M
WKIA0980E
PG-43
ELECTRICAL UNITS LOCATION
PASSENGER COMPARTMENT
WKIA0249E
PG-44
ELECTRICAL UNITS LOCATION
A
B
C
D
E
F
G
H
I
J
PG
L
M
WKIA0981E
PG-45
ELECTRICAL UNITS LOCATION
Fuse EKS003B5
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.
q Do not partially install fuse; always insert it into fuse holder prop-
erly.
q Remove fuse for "ELECTRICAL PARTS (BAT)" if vehicle is not
used for a long period of time.
CEL083
Fusible Link EKS003B6
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:
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-
dent.
q Never wrap outside of fusible link with vinyl tape. Important:
Never let fusible link touch any other wiring harness, vinyl
or rubber parts. WKIA0254E
Circuit Breaker EKS003B7
For example, when current is 30A, the circuit is broken within 8 to 20
seconds.
A circuit breaker is used for the following systems:
q Power door locks
q Power sunroof
q Power windows
q Remote keyless entry system
SBF284E
PG-46
HARNESS CONNECTOR
HARNESS CONNECTOR PFP:24010
A
Description EKS003B8
HARNESS CONNECTOR (TAB-LOCKING TYPE)
q The tab-locking type connectors help prevent accidental looseness or disconnection. B
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. C
CAUTION:
Do not pull the harness or wires when disconnecting the connector.
[Example]
D
E
F
G
H
I
J
PG
L
M
SEL769DA
PG-47
HARNESS CONNECTOR
HARNESS CONNECTOR (SLIDE-LOCKING TYPE)
q A new style slide-locking type connector is used on certain systems and components, especially those
related to OBD.
q The slide-locking type connectors help prevent incomplete locking and accidental looseness or discon-
nection.
q The slide-locking type connectors are disconnected by pushing or pulling the slider. Refer to the illustra-
tion below.
CAUTION:
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]
AEL299C
PG-48
HARNESS CONNECTOR
HARNESS CONNECTOR (DIRECT-CONNECT SRS COMPONENT TYPE)
q SRS direct-connect type harness connectors are used on certain SRS components such as air bag mod- A
ules 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 connector to SRS component. When locked, B
the black locking tab is level with the connector housing.
CAUTION:
q Do not pull the harness or wires when removing connectors C
from SRS components.
D
E
WHIA0103E F
G
H
I
J
PG
L
M
PG-49
JOINT CONNECTOR
JOINT CONNECTOR PFP:B4341
Terminal Arrangement EKS003B9
WKIA0982E
PG-50
ELECTRICAL UNITS
ELECTRICAL UNITS PFP:23710
A
Terminal Arrangement EKS003BA
B
C
D
E
F
G
H
I
J
PG
L
M
WKIA0983E
PG-51
STANDARDIZED RELAY
STANDARDIZED RELAY PFP:25230
Description EKS003BB
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
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