Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti G35 2003-2005 Coupe Sedan Approved Infiniti G35 Coupe 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
PRECAUTIONS ......................................................... 3 . GROUND .................................................................. 29
. F
Precautions for Battery Service ............................... 3 . Ground Distribution ................................................ 29
.
POWER SUPPLY ROUTING CIRCUIT ..................... 4 . MAIN HARNESS ................................................ 29 .
Schematic ............................................................... 4
. ENGINE ROOM HARNESS ............................... 32 . G
Wiring Diagram -- POWER -- ................................ 5 . ENGINE CONTROL HARNESS ......................... 34 .
BATTERY POWER SUPPLY -- IGNITION SW. BODY HARNESS ............................................... 35 .
IN ANY POSITION ............................................... 5 . BODY NO.2 HARNESS ..................................... 37 .
H
ACCESSORY POWER SUPPLY -- IGNITION HARNESS ................................................................ 39
.
SW. IN "ACC" OR "ON" ...................................... 10 . Harness Layout ..................................................... 39
.
IGNITION POWER SUPPLY -- IGNITION SW. HOW TO READ HARNESS LAYOUT ................ 39 .
IN "ON" AND/OR "START" ..................................11 . OUTLINE ............................................................ 40
. I
Fuse ...................................................................... 16
. MAIN HARNESS ................................................ 41 .
Fusible Link ........................................................... 16
. ENGINE ROOM HARNESS ............................... 43 .
Circuit Breaker ...................................................... 16
. ENGINE CONTROL HARNESS ......................... 47 . J
IPDM E/R (INTELLIGENT POWER DISTRIBUTION BODY HARNESS ............................................... 49 .
MODULE ENGINE ROOM) ..................................... 17 . BODY NO.2 HARNESS ..................................... 52 .
System Description ............................................... 17 . ROOM LAMP HARNESS ................................... 54 .
PG
SYSTEMS CONTROLLED BY IPDM E/R .......... 17 . DOOR HARNESS .............................................. 55 .
CAN COMMUNICATION LINE CONTROL ........ 17 . Wiring Diagram Codes (Cell Codes) ..................... 56 .
IPDM E/R STATUS CONTROL .......................... 18 . ELECTRICAL UNITS LOCATION ........................... 59 .
CAN Communication System Description ............. 18 . Electrical Units Location ........................................ 59 . L
CAN Communication Unit ..................................... 18 . ENGINE COMPARTMENT ................................. 59 .
TYPE 1 ............................................................... 19
. PASSENGER COMPARTMENT ........................ 60 .
TYPE 2 ............................................................... 20
. LUGGAGE COMPARTMENT ............................. 62 . M
Function of Detecting Ignition Relay Malfunction ... 22 HARNESS CONNECTOR ........................................ 63 .
Auto Active Test .................................................... 22. Description ............................................................. 63
.
DESCRIPTION ................................................... 22 . HARNESS CONNECTOR (TAB-LOCKING
OPERATION PROCEDURE .............................. 22 . TYPE) ................................................................. 63
.
INSPECTION IN AUTO ACTIVE TEST MODE ... 22 HARNESS CONNECTOR (SLIDE-LOCKING
Schematic ............................................................. 24
. TYPE) ................................................................. 64
.
IPDM E/R Terminal Arrangement .......................... 25 . JOINT CONNECTOR (J/C) ...................................... 65 .
IPDM E/R Terminal Inspection .............................. 26 . Terminal Arrangement ........................................... 65 .
IPDM E/R Power/Ground Circuit Inspection ......... 27 . ELECTRICAL UNITS ............................................... 66 .
Removal and Installation of IPDM E/R .................. 28 . Terminal Arrangement ........................................... 66 .
REMOVAL .......................................................... 28 . SMJ (SUPER MULTIPLE JUNCTION) .................... 68 .
INSTALLATION .................................................. 28 . Terminal Arrangement ........................................... 68 .
STANDARDIZED RELAY ......................................... 70 .
Description ............................................................. 70
.
NORMAL OPEN, NORMAL CLOSED AND
Revision; 2004 April PG-1 2003 G35 Coupe
MIXED TYPE RELAYS ....................................... 70
. FUSE, FUSIBLE LINK AND RELAY BOX ...............73 .
TYPE OF STANDARDIZED RELAYS ................. 70 . Terminal Arrangement ............................................73
.
FUSE BLOCK - JUNCTION BOX (J/B) ................... 72 .
Terminal Arrangement ........................................... 72
.
Revision; 2004 April PG-2 2003 G35 Coupe
PRECAUTIONS
PRECAUTIONS PFP:00001
A
Precautions for Battery Service AKS003RH
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the B
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
C
D
E
F
G
H
I
J
PG
L
M
Revision; 2004 April PG-3 2003 G35 Coupe
POWER SUPPLY ROUTING CIRCUIT
POWER SUPPLY ROUTING CIRCUIT PFP:24110
Schematic AKS003HW
TKWT0657E
Revision; 2004 April PG-4 2003 G35 Coupe
POWER SUPPLY ROUTING CIRCUIT
Wiring Diagram -- POWER -- AKS003HX
BATTERY POWER SUPPLY -- IGNITION SW. IN ANY POSITION A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWT0658E
Revision; 2004 April PG-5 2003 G35 Coupe
POWER SUPPLY ROUTING CIRCUIT
TKWT0659E
Revision; 2004 April PG-6 2003 G35 Coupe
POWER SUPPLY ROUTING CIRCUIT
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWT0660E
Revision; 2004 April PG-7 2003 G35 Coupe
POWER SUPPLY ROUTING CIRCUIT
TKWT0661E
Revision; 2004 April PG-8 2003 G35 Coupe
POWER SUPPLY ROUTING CIRCUIT
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWT0662E
Revision; 2004 April PG-9 2003 G35 Coupe
POWER SUPPLY ROUTING CIRCUIT
ACCESSORY POWER SUPPLY -- IGNITION SW. IN "ACC" OR "ON"
TKWT0663E
Revision; 2004 April PG-10 2003 G35 Coupe
POWER SUPPLY ROUTING CIRCUIT
IGNITION POWER SUPPLY -- IGNITION SW. IN "ON" AND/OR "START"
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWT0664E
Revision; 2004 April PG-11 2003 G35 Coupe
POWER SUPPLY ROUTING CIRCUIT
TKWT0665E
Revision; 2004 April PG-12 2003 G35 Coupe
POWER SUPPLY ROUTING CIRCUIT
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWT0666E
Revision; 2004 April PG-13 2003 G35 Coupe
POWER SUPPLY ROUTING CIRCUIT
TKWT0667E
Revision; 2004 April PG-14 2003 G35 Coupe
POWER SUPPLY ROUTING CIRCUIT
A
B
C
D
E
F
G
H
I
J
PG
L
M
TKWT0668E
Revision; 2004 April PG-15 2003 G35 Coupe
POWER SUPPLY ROUTING CIRCUIT
Fuse AKS003HY
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 AKS003HZ
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. CKIT0163E
Circuit Breaker AKS003I0
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-16 2003 G35 Coupe
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7 A
System Description AKS003I1
q IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block B
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. C
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. D
SYSTEMS CONTROLLED BY IPDM E/R
1. Lamp control E
Using CAN communication line, it receives signal from BCM and controls the following lamps:
q Head lamps (Hi, Lo)
q Parking lamps F
q Tail lamps
q Front fog lamps
2. Wiper control G
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 H
relay.
4. A/C compressor control
Using CAN communication line, it receives signals from ECM and controls the A/C relay. I
5. Cooling fan control
Using CAN communication line, it receives signals from ECM and controls cooling fan relay.
6. Horn control J
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 PG
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 L
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: M
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-17 2003 G35 Coupe
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.
1. CAN communication status
q CAN communication is normally performed with other control units.
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
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.
3. Sleep status
q IPDM E/R operates in low current-consumption mode.
q CAN communication is stopped.
q When a change in CAN communication line is detected, mode switches to CAN communication status.
q When a change hood switch signal is detected, mode switches to CAN communication status.
CAN Communication System Description AKS003I2
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 AKS005PN
Body type Coupe
Axle 2WD
Engine VQ35DE
Transmission M/T A/T
Brake control VDC
CAN communication unit
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