Infiniti M35/M45 Y50. Manual - part 964

PG-1

POWER SUPPLY, GROUND & CIRCUIT ELEMENTS

K  ELECTRICAL

CONTENTS

C

D

E

F

G

H

I

J

L

M

SECTION 

PG

A

B

PG

POWER SUPPLY, GROUND & CIRCUIT ELEMENTS

POWER SUPPLY ROUTING CIRCUIT  ...................... 3

Schematic ................................................................ 3
Wiring Diagram — POWER — ................................. 5

BATTERY POWER SUPPLY — IGNITION SW. 
IN ANY POSITION  ................................................ 5
ACCESSORY POWER SUPPLY — IGNITION 
SW. IN “ACC” OR “ON” ........................................11
IGNITION POWER SUPPLY — IGNITION SW. 
IN “ON” AND/OR “START”  .................................. 12

Fuse ....................................................................... 17
Fusible Link  ............................................................ 17
Circuit Breaker  ....................................................... 17

IPDM E/R (INTELLIGENT POWER DISTRIBUTION 
MODULE ENGINE ROOM)  ...................................... 18

System Description  ................................................ 18

SYSTEMS CONTROLLED BY IPDM E/R ........... 18
CAN COMMUNICATION LINE CONTROL  ......... 18
IPDM E/R STATUS CONTROL  ........................... 19

CAN Communication System Description .............. 19
CAN Communication Unit  ...................................... 19
Function of Detecting Ignition Relay Malfunction ... 19
CONSULT-II Function (IPDM E/R)  ......................... 20

CONSULT-II BASIC OPERATION ....................... 20
SELF-DIAG RESULTS  ........................................ 20
DATA MONITOR  ................................................. 21
CAN DIAG SUPPORT MNTR  ............................. 22
ACTIVE TEST  ..................................................... 22

Auto Active Test  ..................................................... 23

DESCRIPTION .................................................... 23
OPERATION PROCEDURE  ............................... 23
INSPECTION IN AUTO ACTIVE TEST MODE ... 24

Schematic .............................................................. 27
IPDM E/R Terminal Arrangement  ........................... 28
Check IPDM E/R Power Supply and Ground Circuit 

... 29

Inspection with CONSULT-II (Self-Diagnosis)  ........ 30
Removal and Installation of IPDM E/R  ................... 31

REMOVAL ........................................................... 31
INSTALLATION ................................................... 31

PDU (POWER DISTRIBUTION UNIT) ...................... 32

Component Parts and Harness Connector Location 

... 32

System Description ................................................. 32

PUSH-BUTTON IGNITION SWITCH OPERAT-
ING PROCEDURE  .............................................. 32

Wiring Diagram — PDU —  ..................................... 34
Terminals and Reference Value for Intelligent Key 
Unit ......................................................................... 36
Terminals and Reference Value for PDU  ................ 37
Work Flow ............................................................... 37
Trouble Diagnosis Symptom Chart ......................... 38
Check CAN Communication System ...................... 38
Check PDU Power Supply and Ground Circuit  ...... 39
Check Push-Button Ignition Switch (Ignition Switch) 
System .................................................................... 39
Check Push-Button Ignition Switch (Indicator Cir-
cuit) System ............................................................ 41
PDU Communication Circuit System 1 ................... 42
PDU Communication Circuit System 2 ................... 43
Removal and Installation of PDU ............................ 44

REMOVAL ........................................................... 44
INSTALLATION ................................................... 44

GROUND ................................................................... 45

Ground Distribution ................................................. 45

MAIN HARNESS  ................................................. 45
ENGINE ROOM HARNESS  ................................ 50
ENGINE CONTROL HARNESS/VQ ENGINE 
MODELS ............................................................. 54
ENGINE CONTROL HARNESS/VK ENGINE 
MODELS ............................................................. 55
BODY HARNESS  ................................................ 56
BODY NO. 2 HARNESS  ..................................... 60

HARNESS ................................................................. 62

Harness Layout  ...................................................... 62

HOW TO READ HARNESS LAYOUT  ................. 62
OUTLINE ............................................................. 63
MAIN HARNESS  ................................................. 64
NAVIGATION SUB-HARNESS & A/C HARNESS 

... 69

ENGINE ROOM HARNESS  ................................ 70
ENGINE CONTROL HARNESS (VQ ENGINE) ... 77
ENGINE CONTROL HARNESS (VK ENGINE) ... 80
BODY HARNESS  ................................................ 83

PG-2

BODY NO. 2 HARNESS ...................................... 87
TAIL HARNESS  ................................................... 91
ROOM LAMP HARNESS  .................................... 92
FRONT DOOR HARNESS  .................................. 93
REAR DOOR HARNESS  .................................... 94

Wiring Diagram Codes (Cell Codes) ....................... 95

ELECTRICAL UNITS LOCATION ............................. 98

Electrical Units Location  ......................................... 98

ENGINE COMPARTMENT  .................................. 98
PASSENGER COMPARTMENT ........................ 100
LUGGAGE COMPARTMENT  ............................ 103

HARNESS CONNECTOR  ....................................... 104

Description ............................................................ 104

HARNESS CONNECTOR (TAB-LOCKING 
TYPE) ................................................................ 104
HARNESS CONNECTOR (SLIDE-LOCKING 

TYPE) ................................................................105
HARNESS CONNECTOR (LEVER LOCKING 
TYPE) ................................................................106

ELECTRICAL UNITS  ..............................................107

Terminal Arrangement ...........................................107

SMJ (SUPER MULTIPLE JUNCTION) ....................109

Terminal Arrangement ...........................................109

STANDARDIZED RELAY  ........................................ 112

Description ............................................................ 112

NORMAL OPEN, NORMAL CLOSED AND 
MIXED TYPE RELAYS  ...................................... 112
TYPE OF STANDARDIZED RELAYS  ................ 112

FUSE BLOCK - JUNCTION BOX (J/B)  .................. 114

Terminal Arrangement ........................................... 114

FUSE, FUSIBLE LINK AND RELAY BOX  .............. 115

Terminal Arrangement ........................................... 115

POWER SUPPLY ROUTING CIRCUIT

PG-3

C

D

E

F

G

H

I

J

L

M

A

B

PG

POWER SUPPLY ROUTING CIRCUIT

PFP:24110

Schematic

NKS004DX

TKWT5162E

PG-4

POWER SUPPLY ROUTING CIRCUIT

TKWT3565E