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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 ..................................... 2 . Electrical Units Location ........................................ 48 . F
Schematic ............................................................... 2
. ENGINE COMPARTMENT ................................. 48 .
Wiring Diagram -- POWER -- ................................ 3 . PASSENGER COMPARTMENT ........................ 49 .
BATTERY POWER SUPPLY-- IGNITION SW. IN LUGGAGE COMPARTMENT ............................. 51 . G
ANY POSITION .................................................... 3
. Fuse ....................................................................... 52
.
ACCESSORY POWER SUPPLY -- IGNITION Fusible Link ........................................................... 52
.
SW. IN "ACC" OR "ON" ........................................ 7 . Circuit Breaker ....................................................... 52
.
H
IGNITION POWER SUPPLY -- IGNITION SW. HARNESS CONNECTOR ........................................ 53 .
IN "ON" AND/OR "START" ................................... 9 . Description ............................................................. 53
.
GROUND ................................................................. 13
. HARNESS CONNECTOR (TAB-LOCKING
Ground Distribution ............................................... 13
. TYPE) ................................................................. 53
. I
MAIN HARNESS ................................................ 13 . HARNESS CONNECTOR (SLIDE-LOCKING
ENGINE ROOM HARNESS ............................... 16 . TYPE) ................................................................. 54
.
ENGINE HARNESS ........................................... 19 . JOINT CONNECTOR (J/C) ...................................... 55 . J
ENGINE CONTROL HARNESS ........................ 20 . Terminal Arrangement ........................................... 55 .
BODY HARNESS ............................................... 22 . ELECTRICAL UNITS ............................................... 56 .
BODY NO.2 HARNESS ..................................... 24 . Terminal Arrangement ........................................... 56 .
PG
HARNESS ................................................................ 26
. SMJ (SUPER MULTIPLE JUNCTION) .................... 58 .
Harness Layout ..................................................... 26
. Terminal Arrangement ........................................... 58 .
HOW TO READ HARNESS LAYOUT ................ 26 . STANDARDIZED RELAY ......................................... 60 .
OUTLINE ............................................................ 27
. Description ............................................................. 60
. L
MAIN HARNESS ................................................ 28 . NORMAL OPEN, NORMAL CLOSED AND
ENGINE ROOM HARNESS ............................... 31 . MIXED TYPE RELAYS ....................................... 60 .
ENGINE HARNESS ........................................... 34 . TYPE OF STANDARDIZED RELAYS ................ 60 . M
ENGINE CONTROL HARNESS ........................ 35 . FUSE BLOCK - JUNCTION BOX (J/B) NO.1 ......... 62 .
BODY HARNESS ............................................... 37 . Terminal Arrangement ........................................... 62 .
BODY NO. 2 HARNESS .................................... 39 . FUSE BLOCK - JUNCTION BOX (J/B) NO.2 ......... 63 .
ROOM LAMP HARNESS ................................... 41 . Terminal Arrangement ........................................... 63 .
FRONT DOOR HARNESS ................................. 42 . FUSE, FUSIBLE LINK AND RELAY BLOCK (J/B)... 64
REAR DOOR HARNESS ................................... 43 . Terminal Arrangement ........................................... 64 .
Wiring Diagram Codes (Cell Codes) ..................... 44 . FUSE, FUSIBLE LINK AND RELAY BOX ............... 65 .
ELECTRICAL UNITS LOCATION ........................... 48 . Terminal Arrangement ........................................... 65 .
Revision; 2004 April PG-1 2003 M45
POWER SUPPLY ROUTING
POWER SUPPLY ROUTING PFP:00011
Schematic AKS002RQ
TKWA0682E
Revision; 2004 April PG-2 2003 M45
POWER SUPPLY ROUTING
Wiring Diagram -- POWER -- AKS002RR
BATTERY POWER SUPPLY-- IGNITION SW. IN ANY POSITION A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWA0683E
Revision; 2004 April PG-3 2003 M45
POWER SUPPLY ROUTING
TKWA0684E
Revision; 2004 April PG-4 2003 M45
POWER SUPPLY ROUTING
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWA0685E
Revision; 2004 April PG-5 2003 M45
POWER SUPPLY ROUTING
TKWA0686E
Revision; 2004 April PG-6 2003 M45
POWER SUPPLY ROUTING
ACCESSORY POWER SUPPLY -- IGNITION SW. IN "ACC" OR "ON"
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWA0687E
Revision; 2004 April PG-7 2003 M45
POWER SUPPLY ROUTING
TKWA0688E
Revision; 2004 April PG-8 2003 M45
POWER SUPPLY ROUTING
IGNITION POWER SUPPLY -- IGNITION SW. IN "ON" AND/OR "START"
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWA0689E
Revision; 2004 April PG-9 2003 M45
POWER SUPPLY ROUTING
TKWA0690E
Revision; 2004 April PG-10 2003 M45
POWER SUPPLY ROUTING
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWA0691E
Revision; 2004 April PG-11 2003 M45
POWER SUPPLY ROUTING
TKWA0692E
Revision; 2004 April PG-12 2003 M45
GROUND
GROUND PFP:00011
A
Ground Distribution AKS002RS
MAIN HARNESS
B
C
D
E
F
G
H
I
J
PG
L
M
CKIA0232E
Revision; 2004 April PG-13 2003 M45
GROUND
CKIA0233E
Revision; 2004 April PG-14 2003 M45
GROUND
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIA0234E
Revision; 2004 April PG-15 2003 M45
GROUND
ENGINE ROOM HARNESS
CKIA0235E
Revision; 2004 April PG-16 2003 M45
GROUND
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIA0236E
Revision; 2004 April PG-17 2003 M45
GROUND
CKIA0237E
Revision; 2004 April PG-18 2003 M45
GROUND
ENGINE HARNESS
A
B
C
D
E
F
G
H
CKIA0238E I
J
PG
L
M
Revision; 2004 April PG-19 2003 M45
GROUND
ENGINE CONTROL HARNESS
CKIA0239E
Revision; 2004 April PG-20 2003 M45
GROUND
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIA0240E
Revision; 2004 April PG-21 2003 M45
GROUND
BODY HARNESS
CKIA0241E
Revision; 2004 April PG-22 2003 M45
GROUND
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIA0242E
Revision; 2004 April PG-23 2003 M45
GROUND
BODY NO.2 HARNESS
CKIA0243E
Revision; 2004 April PG-24 2003 M45
GROUND
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIA0244E
Revision; 2004 April PG-25 2003 M45
HARNESS
HARNESS PFP:00011
Harness Layout AKS002RT
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 (Engine Compartment)
q Engine Control Harness
q Body Harness
q Body No.2 Harness
To use the grid reference
1. Find the desired connector number on the connector list.
SEL252V
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.
SKIA0404E
Revision; 2004 April PG-26 2003 M45
HARNESS
OUTLINE
A
B
C
D
E
F
G
H
I
J
TKIA0001E
PG
L
M
Revision; 2004 April PG-27 2003 M45
HARNESS
MAIN HARNESS
TKIA0074E
Revision; 2004 April PG-28 2003 M45
HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKIA0003E
Revision; 2004 April PG-29 2003 M45
HARNESS
TKIA0075E
Revision; 2004 April PG-30 2003 M45
HARNESS
ENGINE ROOM HARNESS
Engine Compartment A
B
C
D
E
F
G
H
I
J
PG
L
M
TKIA0005E
Revision; 2004 April PG-31 2003 M45
HARNESS
TKIA0006E
Revision; 2004 April PG-32 2003 M45
HARNESS
Passenger Compartment
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKIA0007E
Revision; 2004 April PG-33 2003 M45
HARNESS
ENGINE HARNESS
TKIA0008E
Revision; 2004 April PG-34 2003 M45
HARNESS
ENGINE CONTROL HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKIA0009E
Revision; 2004 April PG-35 2003 M45
HARNESS
TKIA0010E
Revision; 2004 April PG-36 2003 M45
HARNESS
BODY HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKIA0076E
Revision; 2004 April PG-37 2003 M45
HARNESS
TKIA0077E
Revision; 2004 April PG-38 2003 M45
HARNESS
BODY NO. 2 HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKIA0013E
Revision; 2004 April PG-39 2003 M45
HARNESS
TKIA0014E
Revision; 2004 April PG-40 2003 M45
HARNESS
ROOM LAMP HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKIA0015E
Revision; 2004 April PG-41 2003 M45
HARNESS
FRONT DOOR HARNESS
LH Side
TKIA0016E
RH Side
TKIA0017E
Revision; 2004 April PG-42 2003 M45
HARNESS
REAR DOOR HARNESS
LH Side A
B
C
D
E
F
G
H
I
TKIA0018E
RH Side
J
PG
L
M
TKIA0019E
Revision; 2004 April PG-43 2003 M45
HARNESS
Wiring Diagram Codes (Cell Codes) AKS002RV
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
A/C ATC Air Conditioner
APPS1 EC Accelerator Pedal Position Sensor
APPS2 EC Accelerator Pedal Position Sensor
APPS3 EC Accelerator Pedal Position Sensor
ASCD ACS Automatic Speed Control Device
AT/IND DI A/T Indicator
AUDIO AV Audio
AUT/DP SE Automatic Drive Positioner - IVMS
BACK/L LT Back-up Lamp
BRK/SW EC Brake Switch
BYPS/V EC Vacuum Cut Valve Bypass Valve
CAN AT CAN Communication Line
CAN EC CAN Communication Line
CAN LAN CAN System
CD/CHG AV CD Auto Changer
CHARGE SC Charging System
CHIME DI Warning Chime
CIGAR WW Cigarette Lighter
CLOCK DI Clock
COMM AV Audio Visual Communication Line
COMM DI Audio Visual Communication Line
COMM LAN IVMS - Communication Check, Power Supply & Ground
COMPAS DI Auto Anti - Dazzling Inside Mirror (COMPASS)
COOL/V EC Cooling Fan Speed Control Solenoid Valve
C/SEAT SE Climate Controlled Seat
D/C AT Direct Clutch Solenoid Valve
D/CF AT Direct Clutch Solenoid Valve Function
D/LOCK BL Power Door Lock - IVMS
DEF GW Rear Window Defogger
DLC EC Data Link Connectors
DTRL LT Headlamp - With Daytime Light System
E/BRE AT A/T 1st Engine Braking
ECM/PW EC ECM Power Supply (Back - up)
ECTS EC Engine Coolant Temperature Sensor
EPS STC Electronic Controlled Power Steering System
ETC1 EC Electrical Throttle Function
ETC2 EC Electrical Throttle Control Motor Relay
ETC3 EC Electrical Throttle Control Motor
F/FOG LT Front Fog Lamp
F/PUMP EC Fuel Pump
FR/B AT Front Brake Solenoid Valve
Revision; 2004 April PG-44 2003 M45
HARNESS
Code Section Wiring Diagram Name
A
FR/BF AT Front Brake Solenoid Valve Function
FLS1 EC Fuel Level Sensor Function (SLOSH)
FLS2 EC Fuel Level Sensor Circuit B
FLS3 EC Fuel Level Sensor Circuit (Ground Signal)
FPCM EC Fuel Pump Control Module
FPSW1 AT Pressure Switch 1 (FR/B) C
FPSW3 AT Pressure Switch 3 (I/C)
FPSW5 AT Pressure Switch 5 (D/C)
D
FPSW6 AT Pressure Switch 6 (HLR/C)
FTS AT A/T Fluid Temperature Sensor
FTTS EC Fuel tank Temperature Sensor E
FUELB1 EC Fuel Injection System Function (Bank 1)
FUELB2 EC Fuel Injection System Function (Bank 2)
F
H/AIM LT Headlamp Aiming Control System
H/LAMP LT Headlamp
HLR/C AT High and Low Reverse Clutch Solenoid Valve G
HLR/CF AT High and Low Reverse Clutch Solenoid Valve Function
HORN WW Horn
H
I/C AT Input Clutch Solenoid Valve
I/CF AT Input Clutch Solenoid Valve Function
I/LOCK AT A/T Interlock I
I/MIRR GW Inside Mirror (Auto-anti dazzling mirror)
IATS EC Intake Air Temperature Sensor
ICC ACS Intelligent Cruise Control System
J
IGN/SG EC Ignition Signal
ILL LT Illumination PG
INF/D DI Information Display
INJECT EC Injector
INT/L LT Vanity Mirror and Trunk Room Lamps L
IVCB1 EC Intake Valve Timing Control Solenoid Valve Bank 1
IVCB2 EC Intake Valve Timing Control Solenoid Valve Bank 2
M
IVCSB1 EC Intake Valve Timing Control Position Sensor Bank 1
IVCSB2 EC Intake Valve Timing Control Position Sensor Bank 2
IVTB1 EC Intake Valve Timing Control System (Bank 1)
IVTB2 EC Intake Valve Timing Control System (Bank 2)
KEYLES BL Remote Keyless Entry System - IVMS
KS EC Knock Sensor
LC/B AT Low Coast Break Solenoid Valve
LC/BF AT Low Coast Break Solenoid Valve Function
LOAD EC Electrical Load Signal
LPSV AT Line Pressure Solenoid Valve
MAFS EC Mass Air Flow Sensor
MAIN EC Main Power Supply and Ground Circuit
METER DI Speedometer, Tachometer, Temp., Oil and Fuel Gauges
Revision; 2004 April PG-45 2003 M45
HARNESS
Code Section Wiring Diagram Name
MIL EC Malfunction Indicator Lamp
MIRROR GW Door Mirror
MMSW AT Manual Mode Switch
NATS BL IVIS (Infiniti Vehicle Immobilizer System - NATS)
NAVI AV Navigation System
NONDTC AT Non-detective Items
O2H1B1 EC Heated Oxygen Sensor 1 Heater Bank 1
O2H1B2 EC Heated Oxygen Sensor 1 Heater Bank 2
O2H2B1 EC Rear Heated Oxygen Sensor 2 Heater Bank 1
O2H2B2 EC Rear Heated Oxygen Sensor 2 Heater Bank 2
O2S1B1 EC Heated Oxygen Sensor 1 Bank 1
O2S1B2 EC Heated Oxygen Sensor 1 Bank 2
O2S2B1 EC Rear Heated Oxygen Sensor 2 Bank 1
O2S2B2 EC Rear Heated Oxygen Sensor 2 Bank 2
PGC/V EC EVAP Canister Purge Volume Control Solenoid Valve
PHASE EC Camshaft Position Sensor (PHASE)
PHONE AV Telephone
PNP/SW AT Park/Neutral Position Switch
PNP/SW EC Park/Neutral Position Switch
POS EC Crankshaft Position Sensor (CKPS) (POS)
POWER AT Transmission Control Module Power Supply
POWER PG Power Supply Routing
PRE/SE EC EVAP Control System Pressure Sensor
PS/SEN EC Power Steering Pressure Sensor
RCTS EC Radiator Coolant Temperature Sensor
REMOTE AV Audio (Remote Control Switch)
ROOM/L LT Interior Room Lamp - IVMS
RP/SEN EC Refrigerant Pressure Sensor
S/SIG EC Start Signal
SEAT SE Power Seat
SEN/PW EC Sensor Power Supply
SHIFT AT A/T Shift Lock System
SROOF BL Sunroof
SRS SRS Supplemental Restraint System
START SC Starting System
STEP/L LT Step Lamp - IVMS
STOP/L LT Stop Lamp
STSIG AT Start Signal
T&FLID BL Trunk Lid and Fuel Lid Opener
T/CLOS BL Trunk Closure System
T/WARN WT Low Tire Pressure Warning System
TAIL/L LT Parking, License and Tail Lamps
TCCSIG AT A/T TCC S/V Function (Lock Up)
TCV AT Torque Converter Clutch Solenoid Valve
Revision; 2004 April PG-46 2003 M45
HARNESS
Code Section Wiring Diagram Name
A
TILTEL STC Electric Tilt, Telescopic Steering Position System
TPS1 EC Throttle Position Sensor (Sensor 1)
TPS2 EC Throttle Position Sensor (Sensor 2) B
TPS3 EC Throttle Position Sensor
TRNSCV BL Homelink Universal Transceiver
TRSA/T AT Turbine Revolution Sensor C
TURN LT Turn Signal and Hazard Warning Lamps
VDC BRC Vehicle Dynamics Control System
D
VEHSEC BL Vehicle Security System - IVMS
VENT/V EC EVAP Canister Vent Control Valve
VEXH EX Variable Exhaust Muffler Control System E
VIAS/V EC Variable Air Induction Control System
VOICE DI Voice Activated Control System
F
VSSAT AT Vehicle Speed Sensor A/T (Revolution Sensor)
W/ANT AV Audio Antenna
WARN DI Warning Lamps G
WINDOW GW Power Window - IVMS
WIPER WW Wiper and Washer
H
I
J
PG
L
M
Revision; 2004 April PG-47 2003 M45
ELECTRICAL UNITS LOCATION
ELECTRICAL UNITS LOCATION PFP:25230
Electrical Units Location AKS002RW
ENGINE COMPARTMENT
CKIA0227E
Revision; 2004 April PG-48 2003 M45
ELECTRICAL UNITS LOCATION
PASSENGER COMPARTMENT
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIA0228E
Revision; 2004 April PG-49 2003 M45
ELECTRICAL UNITS LOCATION
CKIA0229E
Revision; 2004 April PG-50 2003 M45
ELECTRICAL UNITS LOCATION
LUGGAGE COMPARTMENT
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIA0230E
Revision; 2004 April PG-51 2003 M45
ELECTRICAL UNITS LOCATION
Fuse AKS002RX
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 AKS002RY
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. CKIA0231E
Circuit Breaker AKS002RZ
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.
SEL109W
Revision; 2004 April PG-52 2003 M45
HARNESS CONNECTOR
HARNESS CONNECTOR PFP:00011
A
Description AKS002S0
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.
D
[Example]
E
F
G
H
I
J
PG
L
M
SEL769DA
Revision; 2004 April PG-53 2003 M45
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]
SEL769V
Revision; 2004 April PG-54 2003 M45
JOINT CONNECTOR (J/C)
JOINT CONNECTOR (J/C) PFP:B4341
A
Terminal Arrangement AKS002S1
B
C
D
E
F
G
H
I
J
PG
L
M
CKIA0264E
Revision; 2004 April PG-55 2003 M45
ELECTRICAL UNITS
ELECTRICAL UNITS PFP:23710
Terminal Arrangement AKS002S2
CKIM0114E
Revision; 2004 April PG-56 2003 M45
ELECTRICAL UNITS
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIM0115E
Revision; 2004 April PG-57 2003 M45
SMJ (SUPER MULTIPLE JUNCTION)
SMJ (SUPER MULTIPLE JUNCTION) PFP:B4341
Terminal Arrangement AKS002S3
CKIM0061E
Revision; 2004 April PG-58 2003 M45
SMJ (SUPER MULTIPLE JUNCTION)
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIM0062E
Revision; 2004 April PG-59 2003 M45
STANDARDIZED RELAY
STANDARDIZED RELAY PFP:00011
Description AKS002S4
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
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