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
Revision: 2006 November2007 350Z
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
PRECAUTIONS .......................................................... 3
Precautions for Battery Service ................................ 3
POWER SUPPLY ROUTING CIRCUIT ...................... 4
Schematic ................................................................ 4
Wiring Diagram — POWER — ................................. 5
BATTERY POWER SUPPLY — IGNITION SW.
IN ANY POSITION ................................................ 5
ACCESSORY POWER SUPPLY — IGNITION
SW. IN “ACC” OR “ON” ....................................... 10
IGNITION POWER SUPPLY — IGNITION SW.
IN “ON” AND/OR “START” ................................... 11
Fuse ....................................................................... 15
Fusible Link ............................................................ 15
Circuit Breaker ....................................................... 15
IPDM E/R (INTELLIGENT POWER DISTRIBUTION
MODULE ENGINE ROOM) ...................................... 16
System Description ................................................ 16
SYSTEMS CONTROLLED BY IPDM E/R ........... 16
CAN COMMUNICATION LINE CONTROL ......... 16
IPDM E/R STATUS CONTROL ........................... 17
CAN Communication System Description .............. 17
CAN Communication Unit ...................................... 17
Function of Detecting Ignition Relay Malfunction ... 17
CONSULT-III Function (IPDM E/R) ........................ 18
SELF-DIAG RESULTS ........................................ 18
DATA MONITOR ................................................. 18
ACTIVE TEST ..................................................... 19
Auto Active Test ..................................................... 20
DESCRIPTION .................................................... 20
OPERATION PROCEDURE ............................... 20
INSPECTION IN AUTO ACTIVE TEST MODE ... 20
Schematic .............................................................. 22
IPDM E/R Terminal Arrangement ........................... 23
IPDM E/R Power/Ground Circuit Inspection .......... 24
Inspection With CONSULT-III (Self-Diagnosis) ...... 25
Removal and Installation of IPDM E/R ................... 26
REMOVAL ........................................................... 26
INSTALLATION ................................................... 26GROUND ................................................................... 27
Ground Distribution ................................................. 27
MAIN HARNESS ................................................. 27
ENGINE ROOM HARNESS ................................ 29
ENGINE CONTROL HARNESS .......................... 32
BODY HARNESS ................................................ 34
BODY NO. 2 HARNESS ..................................... 37
TAIL HARNESS ................................................... 38
BACK DOOR HARNESS .................................... 40
HARNESS ................................................................. 41
Harness Layout ...................................................... 41
HOW TO READ HARNESS LAYOUT ................. 41
OUTLINE ............................................................. 42
MAIN HARNESS ................................................. 43
ENGINE ROOM HARNESS ................................ 46
ENGINE CONTROL HARNESS .......................... 50
BODY HARNESS ................................................ 53
BODY NO. 2 HARNESS ..................................... 58
TAIL HARNESS ................................................... 59
TAIL NO. 2 HARNESS ........................................ 62
ROOM LAMP HARNESS .................................... 63
DOOR HARNESS ............................................... 65
Wiring Diagram Codes (Cell Codes) ...................... 67
ELECTRICAL UNITS LOCATION ............................ 70
Electrical Units Location ......................................... 70
ENGINE COMPARTMENT .................................. 70
PASSENGER COMPARTMENT ......................... 71
LUGGAGE COMPARTMENT .............................. 74
HARNESS CONNECTOR ......................................... 76
Description .............................................................. 76
HARNESS CONNECTOR (TAB-LOCKING
TYPE) .................................................................. 76
HARNESS CONNECTOR (SLIDE-LOCKING
TYPE) .................................................................. 77
HARNESS CONNECTOR (LEVER LOCKING
TYPE) .................................................................. 78
ELECTRICAL UNITS ................................................ 79
Terminal Arrangement ............................................ 79
SMJ (SUPER MULTIPLE JUNCTION) ..................... 81
Terminal Arrangement ............................................ 81
PG-2Revision: 2006 November2007 350Z STANDARDIZED RELAY .......................................... 83
Description .............................................................. 83
NORMAL OPEN, NORMAL CLOSED AND
MIXED TYPE RELAYS ........................................ 83
TYPE OF STANDARDIZED RELAYS .................. 83FUSE BLOCK - JUNCTION BOX (J/B) .................... 85
Terminal Arrangement ............................................. 85
FUSE, FUSIBLE LINK AND RELAY BOX ................ 86
Terminal Arrangement ............................................. 86
POWER SUPPLY ROUTING CIRCUIT
PG-15
C
D
E
F
G
H
I
J
L
MA
B
PG
Revision: 2006 November2007 350Z
Fuse NKS000E1
If fuse is blown, be sure to eliminate cause of malfunction before
installing new fuse.
Use fuse of specified rating. Never use fuse of more than speci-
fied rating.
Do not partially install fuse; always insert it into fuse holder prop-
erly.
Remove fuse for “ELECTRICAL PARTS (BAT)” if vehicle is not
used for a long period of time.
Fusible Link NKS000E2
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:
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 mal-
function.
Never wrap outside of fusible link with vinyl tape. Important:
Never let fusible link touch any other wiring harness, vinyl
or rubber parts.
Circuit Breaker NKS000E3
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.
CEL083
CKIT0163E
SEL109W
PG-16
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2006 November2007 350Z
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7
System DescriptionNKS000E4
IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates relays and fuse blocks which
were originally placed in engine room. It controls integrated relays via IPDM E/R control circuit.
IPDM E/R integrated control unit performs ON-OFF operation of relay, hood switch signal reception, etc.
It controls operation of each electrical part via ECM, BCM and CAN communication lines.
CAUTION:
None of the IPDM E/R-integrated relays can be removed.
SYSTEMS CONTROLLED BY IPDM E/R
IPDM E/R receives a request signal from each control unit with CAN communication. It controls each system.
CAN COMMUNICATION LINE CONTROL
With CAN communication, by connecting each control unit using two communication lines (CAN L line, CAN 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
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.
Operation of control parts by IPDM E/R during fail-safe mode is as follows:
Control system Transmit control unit Control part
Lamp control BCM
Head lamps (HI, LO)
Parking lamps, license plate lamps and tail lamps
Wiper control BCM Front wipers
Rear window defogger control BCM Rear window defogger
A/C compressor control ECM A/C compressor (magnet clutch)
Cooling fan control ECM Cooling fan
Controlled system Fail-safe mode
Headlamp
With the ignition switch ON, the headlamp (low) is ON.
With the ignition switch OFF, the headlamp (low) is OFF.
Parking, license plate and tail lamps
With the ignition switch ON, the parking, license plate and tail lamps are ON.
With the ignition switch OFF, the parking, license plate and tail lamps are OFF.
Cooling fan
With the ignition switch ON, the cooling fan HI operates.
With the ignition switch OFF, the cooling fan stops.
Front wiperUntil the ignition switch is turned OFF, the front wiper LO and HI remains in the same status
it was in just before fail−safe control was initiated.
Rear window defogger Rear window defogger relay OFF
A/C compressor A/C compressor OFF
PG-24
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2006 November2007 350Z
IPDM E/R Power/Ground Circuit InspectionNKS000EC
1. CHECK FUSE AND FUSIBLE LINK
Make sure the following fusible links or IPDM E/R fuses are not blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse
or fusible link.
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector.
3. Check voltage between IPDM E/R harness connector and
ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK GROUND CIRCUIT
1. Disconnect IPDM E/R harness connectors.
2. Check continuity between IPDM E/R harness connectors and
ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Terminal No. Signal name Fuse and fusible link No.
1
Battery powerE
2C
—71
78
Terminal
Vo l ta g e
(Approx.) (+)
(-)
IPDM E/R connector Terminal
E31
Ground Battery voltage
2
PKIB6562E
IPDM E/R connector Terminal
GroundContinuity
E8 38
E950
Ye s
60
SKIA6184E
FUSE BLOCK - JUNCTION BOX (J/B)
PG-85
C
D
E
F
G
H
I
J
L
MA
B
PG
Revision: 2006 November2007 350Z
FUSE BLOCK - JUNCTION BOX (J/B)PFP:24350
Terminal ArrangementNKS000EN
CKIT0363E
PG-86
FUSE, FUSIBLE LINK AND RELAY BOX
Revision: 2006 November2007 350Z
FUSE, FUSIBLE LINK AND RELAY BOXPFP:24382
Terminal ArrangementNKS000EO
CKIT0877E