Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti Q45 FY33 F50 2001-2006 Approved 2004_Q45 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 ..................................... 2 . REAR DOOR HARNESS ................................... 45 . F
Schematic ............................................................... 2
. Wiring Diagram Codes (Cell Codes) ..................... 46 .
Wiring Diagram -- POWER -- ................................ 3 . ELECTRICAL UNITS LOCATION ........................... 50 .
BATTERY POWER SUPPLY-- IGNITION SW. IN Electrical Units Location ........................................ 50 . G
ANY POSITION .................................................... 3 . ENGINE COMPARTMENT ................................. 51 .
ACCESSORY POWER SUPPLY -- IGNITION PASSENGER COMPARTMENT ........................ 52 .
SW. IN "ACC" OR "ON" ........................................ 7 . LUGGAGE COMPARTMENT ............................. 55 .
H
IGNITION POWER SUPPLY -- IGNITION SW. HARNESS CONNECTOR ........................................ 56 .
IN "ON" AND/OR "START" ................................... 9 . Description ............................................................. 56
.
Fuse ...................................................................... 13
. HARNESS CONNECTOR (TAB-LOCKING
Fusible Link ........................................................... 13
. TYPE) ................................................................. 56
. I
Circuit Breaker ...................................................... 13
. HARNESS CONNECTOR (SLIDE-LOCKING
GROUND ................................................................. 14
. TYPE) ................................................................. 57
.
Ground Distribution ............................................... 14 . JOINT CONNECTOR (J/C) ...................................... 58 . J
MAIN HARNESS ................................................ 14 . Terminal Arrangement ........................................... 58 .
ENGINE ROOM HARNESS ............................... 17 . ELECTRICAL UNITS ............................................... 59 .
ENGINE HARNESS ........................................... 20 . Terminal Arrangement ........................................... 59 .
PG
ENGINE CONTROL HARNESS ........................ 21 . SMJ (SUPER MULTIPLE JUNCTION) .................... 61 .
BODY HARNESS ............................................... 23 . Terminal Arrangement ........................................... 61 .
BODY NO.2 HARNESS ..................................... 25 . STANDARDIZED RELAY ......................................... 64 .
HARNESS ................................................................ 28
. Description ............................................................. 64
. L
Harness Layout ..................................................... 28 . NORMAL OPEN, NORMAL CLOSED AND
HOW TO READ HARNESS LAYOUT ................ 28 . MIXED TYPE RELAYS ....................................... 64 .
OUTLINE ............................................................ 29
. TYPE OF STANDARDIZED RELAYS ................ 64 . M
MAIN HARNESS ................................................ 30 . FUSE BLOCK - JUNCTION BOX (J/B) NO.1 ......... 66 .
ENGINE ROOM HARNESS ............................... 33 . Terminal Arrangement ........................................... 66 .
ENGINE HARNESS ........................................... 36 . FUSE BLOCK - JUNCTION BOX (J/B) NO.2 ......... 67 .
ENGINE CONTROL HARNESS ........................ 37 . Terminal Arrangement ........................................... 67 .
BODY HARNESS AND REAR CONTROL HAR- FUSE, FUSIBLE LINK AND RELAY BLOCK (J/B)... 68
NESS ................................................................. 39
. Terminal Arrangement ........................................... 68 .
BODY NO. 2 HARNESS .................................... 41 . FUSE, FUSIBLE LINK AND RELAY BOX ............... 69 .
ROOM LAMP HARNESS ................................... 43 . Terminal Arrangement ........................................... 69 .
FRONT DOOR HARNESS ................................. 44 .
PG-1
POWER SUPPLY ROUTING
POWER SUPPLY ROUTING PFP:00011
Schematic EKS000DP
TKWM0984E
PG-2
POWER SUPPLY ROUTING
Wiring Diagram -- POWER -- EKS000DQ
BATTERY POWER SUPPLY-- IGNITION SW. IN ANY POSITION A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWM0355E
PG-3
POWER SUPPLY ROUTING
TKWM0356E
PG-4
POWER SUPPLY ROUTING
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWM0985E
PG-5
POWER SUPPLY ROUTING
TKWM0986E
PG-6
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
TKWM0359E
PG-7
POWER SUPPLY ROUTING
TKWM0450E
PG-8
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
TKWM0360E
PG-9
POWER SUPPLY ROUTING
TKWM0368E
PG-10
POWER SUPPLY ROUTING
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWM0225E
PG-11
POWER SUPPLY ROUTING
TKWM0152E
PG-12
POWER SUPPLY ROUTING
Fuse EKS003SB
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 EKS003SC
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. CKIM0070E
Circuit Breaker EKS003SD
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
PG-13
GROUND
GROUND PFP:00011
Ground Distribution EKS000DR
MAIN HARNESS
CKIM0243E
PG-14
GROUND
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIM0273E
PG-15
GROUND
CKIM0244E
PG-16
GROUND
ENGINE ROOM HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIM0142E
PG-17
GROUND
CKIM0143E
PG-18
GROUND
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIM0156E
PG-19
GROUND
ENGINE HARNESS
CKIM0018E
PG-20
GROUND
ENGINE CONTROL HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIM0144E
PG-21
GROUND
CKIM0157E
PG-22
GROUND
BODY HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIM0245E
PG-23
GROUND
CKIM0187E
PG-24
GROUND
BODY NO.2 HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIM0188E
PG-25
GROUND
CKIM0274E
PG-26
GROUND
A
B
C
D
E
F
G
H
CKIM0024E
I
J
PG
L
M
PG-27
HARNESS
HARNESS PFP:00011
Harness Layout EKS000DS
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 and Rear Control 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
PG-28
HARNESS
OUTLINE
A
B
C
D
E
F
G
H
I
J
CKIM0030E
PG
L
M
PG-29
HARNESS
MAIN HARNESS
TKIM0111E
PG-30
HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKIM0112E
PG-31
HARNESS
TKIM0113E
PG-32
HARNESS
ENGINE ROOM HARNESS
Engine Compartment A
B
C
D
E
F
G
H
I
J
PG
L
M
TKIM0004E
PG-33
HARNESS
TKIM0005E
PG-34
HARNESS
Passenger Compartment
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKIM0006E
PG-35
HARNESS
ENGINE HARNESS
CKIM0096E
PG-36
HARNESS
ENGINE CONTROL HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKIM0007E
PG-37
HARNESS
TKIM0008E
PG-38
HARNESS
BODY HARNESS AND REAR CONTROL HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKIM0097E
PG-39
HARNESS
TKIM0098E
PG-40
HARNESS
BODY NO. 2 HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKIM0057E
PG-41
HARNESS
TKIM0058E
PG-42
HARNESS
ROOM LAMP HARNESS
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKIM0013E
PG-43
HARNESS
FRONT DOOR HARNESS
LH Side
TKIM0137E
RH Side
TKIM0138E
PG-44
HARNESS
REAR DOOR HARNESS
LH Side A
B
C
D
E
F
G
H
I
TKIM0139E
RH Side
J
PG
L
M
TKIM0140E
PG-45
HARNESS
Wiring Diagram Codes (Cell Codes) EKS000DT
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
A/TRNK BL Auto Trunk System
ACTIVE SCS Active Damper Suspension System
APPS1 EC Accelerator Pedal Position Sensor (Sensor1)
APPS2 EC Accelerator Pedal Position Sensor (Sensor2)
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
C/SEAT SE Climate controlled seat
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 Compass
COOL/V EC Cooling Fan Speed Control Solenoid Valve
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 Low Coast Brake Solenoid Valve
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/PUMP EC Fuel Pump
PG-46
HARNESS
Code Section Wiring Diagram Name
A
FR/B AT Front Brake Solenoid Valve
FR/BF AT Front Brake Solenoid Valve Function
FLS1 EC Fuel Level Sensor Function (SLOSH) B
FLS2 EC Fuel Level Sensor Circuit
FLS3 EC Fuel Level Sensor Circuit (Ground Signal)
FPCM EC Fuel Pump Control Module C
FPSW1 AT Pressure Switch 1 (FR/B)
FPSW3 AT Pressure Switch 3 (I/C)
D
FPSW5 AT Pressure Switch 5 (D/C)
FPSW6 AT Pressure Switch 6 (HLR/C)
FTS AT A/T Fluid Temperature Sensor E
FTTS EC Fuel tank Temperature Sensor
FUELB1 EC Fuel Injection System Function (Bank 1)
F
FUELB2 EC Fuel Injection System Function (Bank 2)
H/AIM LT Headlamp Aiming Control System
H/LAMP LT Headlamp G
HLR/C AT High and Low Reverse Clutch Solenoid Valve
HLR/CF AT High and Low Reverse Clutch Solenoid Valve Function
H
HORN WW Horn
HSEAT SE Heated Seat
I/C AT Input Clutch Solenoid Valve I
I/CF AT Input Clutch Solenoid Valve Function
I/LOCK AT Solenoid Valve and Pressure Switch
I/MIRR GW Inside Mirror (Auto-anti dazzling mirror)
J
IATS EC Intake Air Temperature Sensor
ICC ACS Intelligent Cruise Control System PG
IGN/SG EC Ignition Signal
ILL LT Illumination
INF/D DI Information Display L
INJECT EC Injector
INT/L LT Vanity Mirror and Trunk Room Lamps
M
IVCB1 EC Intake Valve Timing Control Solenoid Valve Bank 1
IVCB2 EC Intake Valve Timing Control Solenoid Valve Bank 2
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 Load Signal
LPSV AT Line Pressure Solenoid Valve
MAFS EC Mass Air Flow Sensor
PG-47
HARNESS
Code Section Wiring Diagram Name
MAIN EC Main Power Supply and Ground Circuit
METER DI Speedometer, Tachometer, Temp., Oil and Fuel Gauges
MIL EC Malfunction Indicator Lamp
MIRR/L LT Door Mirror (Foot Well) 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 EC Park/Neutral Position Switch
PNP/SW AT 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
R/VIEW DI Rear View Camera Control System
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
SHADE EI Rear Sunshade
SHIFT AT A/T Shift Lock System
SROOF RF 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
SW/ILL GW Power Window Switch Illumination - IVMS
PG-48
HARNESS
Code Section Wiring Diagram Name
A
T&FLID BL Trunk Lid and Fuel Lid Opener
T/CLOS BL Trunk Closure System
T/WARN WT Low Tire Pressure Warning System B
TAIL/L LT Parking, License and Tail Lamps
TCCSIG AT A/T TCC Signal (Lock Up)
TCV AT Torque Converter Clutch Solenoid Valve C
TPS1 EC Throttle Position Sensor (Sensor1)
TPS2 EC Throttle Position Sensor (Sensor2)
D
TPS3 EC Throttle Position Sensor
TRANSCV BL Homelink Universal Transceiver
TRSA/T AT Turbine Revolution Sensor E
TURN LT Turn Signal and Hazard Warning Lamps
VDC BRC Vehicle Dynamics Control System
F
VEHSEC BL Vehicle Security System - IVMS
VENT/V EC EVAP Canister Vent Control Valve
VEXH EX Variable Exhaust Muffler Control System G
VIAS/V EC Variable Air Induction Control System
VOICE DI Voice Activated Control System
H
VSSAT AT Vehicle Speed Sensor A/T (Revolution Sensor)
W/ANT AV Audio Antenna
WARN DI Warning Lamps I
WINDOW GW Power Window - IVMS
WIPER WW Wiper and Washer
J
PG
L
M
PG-49
ELECTRICAL UNITS LOCATION
ELECTRICAL UNITS LOCATION PFP:25230
Electrical Units Location EKS003SA
Use parts code, if applicable, and chassis number to find correct parts number in parts catalog. Parts codes
are shown in illustration.
NOTICE:
Parts codes in illustration are those in effect at the time of the first service manual edition. Information might
not be maintained in the timely manner. Always confirm correct parts code using appropriate parts catalog.
PG-50
ELECTRICAL UNITS LOCATION
ENGINE COMPARTMENT
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIM0149E
PG-51
ELECTRICAL UNITS LOCATION
PASSENGER COMPARTMENT
CKIM0190E
PG-52
ELECTRICAL UNITS LOCATION
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIM0191E
PG-53
ELECTRICAL UNITS LOCATION
CKIM0028E
PG-54
ELECTRICAL UNITS LOCATION
LUGGAGE COMPARTMENT
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIM0192E
PG-55
HARNESS CONNECTOR
HARNESS CONNECTOR PFP:00011
Description EKS000DY
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-56
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.
D
[Example]
E
F
G
H
I
J
PG
L
M
SEL769V
PG-57
JOINT CONNECTOR (J/C)
JOINT CONNECTOR (J/C) PFP:B4341
Terminal Arrangement EKS001B1
CKIM0152E
PG-58
ELECTRICAL UNITS
ELECTRICAL UNITS PFP:23710
A
Terminal Arrangement EKS003SE
B
C
D
E
F
G
H
I
J
PG
L
M
CKIM0114E
PG-59
ELECTRICAL UNITS
CKIM0115E
PG-60
SMJ (SUPER MULTIPLE JUNCTION)
SMJ (SUPER MULTIPLE JUNCTION) PFP:B4341
A
Terminal Arrangement EKS001B2
B
C
D
E
F
G
H
I
J
PG
L
M
CKIM0061E
PG-61
SMJ (SUPER MULTIPLE JUNCTION)
CKIM0062E
PG-62
SMJ (SUPER MULTIPLE JUNCTION)
A
B
C
D
E
F
G
H
I
J
PG
L
M
CKIM0063E
PG-63
STANDARDIZED RELAY
STANDARDIZED RELAY PFP:00011
Description EKS000E4
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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