PG-1
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
K ELECTRICAL
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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
POWER SUPPLY ROUTING CIRCUIT
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Wiring Diagram — POWER —NKS004SY
BATTERY POWER SUPPLY — IGNITION SW. IN ANY POSITION
TKWT5813E
POWER SUPPLY ROUTING CIRCUIT
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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
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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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
CAN communication is normally performed with other control units.
Individual unit control by IPDM E/R is normally performed.
When sleep request signal is received from BCM, mode is switched to sleep waiting status.
2. Sleep waiting status
Process to stop CAN communication is activated.
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
IPDM E/R operates in low power mode.
CAN communication is stopped.
When a change in CAN communication line is detected, mode switches to CAN communication status.
When a change in hood switch or ignition switch signal is detected, mode switches to CAN communica-
tion status.
CAN Communication System DescriptionNKS000E5
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 UnitNKS000E6
Refer to LAN-48, "CAN System Specification Chart" .
Function of Detecting Ignition Relay MalfunctionNKS000E7
When contact point of integrated ignition relay is stuck and cannot be turned OFF, IPDM E/R turns ON
parking lamp, license plate lamp and tail lamp for 10 minutes to indicate ignition relay malfunction.
When a state of ignition relay having built-in does not agree with a state of Ignition switch signal input by a
CAN communication from BCM, IPDM E/R lets tail lamp relay operate.
NOTE:
When the ignition switch is turned ON, tail lamp relay and daytime light relay are OFF.
*1: Canada model onlyIgnition switch signal Ignition relay status
Tail lamp relay and daytime light relay
*1
ON ON —
OFF OFF —
ON OFF —
OFF ON ON (10 minutes)
HARNESS
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Wiring Diagram Codes (Cell Codes) NKS000EH
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
3METER DI Triple Meter
ABS BRC Anti-Lock Braking System
A/C ATC Air Conditioner
AF1B1 EC Air Fuel Ratio Sensor 1 (Bank 1)
AF1B2 EC Air Fuel Ratio Sensor 1 (Bank 2)
AF1HB1 EC Air Fuel Ratio Sensor 1 Heater (Bank 1)
AF1HB2 EC Air Fuel Ratio Sensor 1 Heater (Bank 2)
APPS1 EC Accelerator Pedal Position Sensor
APPS2 EC Accelerator Pedal Position Sensor
APPS3 EC Accelerator Pedal Position Sensor
ASC/BS EC Automatic Speed Control Device (ASCD) Brake Switch
ASC/SW EC Automatic Speed Control Device (ASCD) Steering Switch
ASCBOF EC Automatic Speed Control Device (ASCD) Brake Switch
ASCIND EC Automatic Speed Control Device (ASCD) Indicator
AT/IND DI A/T Indicator Lamp
AUDIO AV Audio
BACK/L LT Back-Up Lamp
BRK/SW EC Brake Switch
CAN AT CAN Communication Line
CAN EC CAN Communication Line
CAN LAN CAN System
CHARGE SC Charging System
CHIME DI Warning Chime
COMBSW LT Combination Switch
COMM AV Audio Visual Communication Line
COOL/F EC Cooling Fan Control
DEF GW Rear Window Defogger
D/LOCK BL Power Door Lock
DTRL LT Headlamp - With Daytime Light System
ECM/PW EC ECM Power Supply for Back-Up
ECTS EC Engine Coolant Temperature Sensor
EOTS EC Engine Oil Temperature Sensor
EPS STC Electric Controlled Power Steering System
ETC1B1 EC Electric Throttle Control Function (Bank 1)
ETC1B2 EC Electric Throttle Control Function (Bank 2)
ETC2B1 EC Electric Throttle Control Motor Relay (Bank 1)
ETC2B2 EC Electric Throttle Control Motor Relay (Bank 2)
ETC3B1 EC Electric Throttle Control Motor (Bank 1)
ETC3B2 EC Electric Throttle Control Motor (Bank 2)
EVCB1 EC Exhaust Valve Timing Control Magnet Retarder (Bank 1)
EVCB2 EC Exhaust Valve Timing Control Magnet Retarder (Bank 2)
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EVCSB1 EC Exhaust Valve Timing Control Position Sensor (Bank 1)
EVCSB2 EC Exhaust Valve Timing Control Position Sensor (Bank 2)
F/LID BL Fuel Lid Opener
F/PUMP EC Fuel Pump
F/ROOF RF Soft Top
FTS AT A/T Fluid Temperature Sensor Circuit
FTTS EC Fuel Tank Temperature Sensor
FUELB1 EC Fuel Injection System Function (Bank 1)
FUELB2 EC Fuel Injection System Function (Bank 2)
H/LAMP LT Headlamp
H/PHON AV Handsfree Telephone System
HORN WW Horn
HSEAT SE Heated Seat
IATSB1 EC Intake Air Temperature Sensor (Bank 1)
IGNSYS EC Ignition System
ILL LT Illumination
I/MIRR GW Inside Mirror (Auto Anti-Dazzling Mirror)
INJECT EC Injector
IVCB1 EC Intake Valve Timing Control Solenoid Valve (Bank 1)
IVCB2 EC Intake Valve Timing Control Solenoid Valve (Bank 2)
KEYLES BL Remote Keyless Entry System
KSB1 EC Knock Sensor (Bank 1)
KSB2 EC Knock Sensor (Bank 2)
MAFSB1 EC Mass Air Flow Sensor (Bank 1)
MAFSB2 EC Mass Air Flow Sensor (Bank 2)
MAIN AT Main Power Supply and Ground Circuit
MAIN EC Main Power Supply and Ground Circuit
M/ANT AV Manual Antenna
METER DI Speedometer, Tachometer, Temp. and Fuel Gauges
MIL/DL EC MIL & Data Link Connector
MIRROR GW Power Door Mirror
MMSW AT Manual Mode Switch
NATS BL Nissan Anti-Theft System
NAVI AV Navigation System
NONDTC AT Non-Detective Items
O2H2B1 EC Heated Oxygen Sensor 2 Heater (Bank 1)
O2H2B2 EC Heated Oxygen Sensor 2 Heater (Bank 2)
O2S2B1 EC Heated Oxygen Sensor 2 (Bank 1)
O2S2B2 EC Heated Oxygen Sensor 2 (Bank 2)
PGC/V EC EVAP Canister Purge Volume Control Solenoid Valve
PHSB1 EC Camshaft Position Sensor (PHASE) (Bank 1)
PHSB2 EC Camshaft Position Sensor (PHASE) (Bank 2)
PNP/SW AT Park/Neutral Position Switch
PNP/SW EC Park/Neutral Position Switch Code Section Wiring Diagram Name
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POS EC Crankshaft Position Sensor (CKPS) (POS)
POWER PG Power Supply Routing
PRE/SE EC EVAP Control System Pressure Sensor
P/SCKT WW Power Socket
PS/SEN EC Power Steering Pressure Sensor
ROOM/L LT Interior Room Lamp
RP/SEN EC Refrigerant Pressure Sensor
SEAT SE Power Seat
SEN/PW EC Sensor Power Supply
SHIFT AT A/T Shift Lock System
SRS SRS Supplemental Restraint System
START SC Starting System
STOP/L LT Stop Lamp
STSIG AT Start Signal Circuit
TAIL/L LT Parking, License and Tail Lamps
TCS BRC Traction Control System
TLID BL Trunk Lid Opener
TPS1B1 EC Throttle Position Sensor (Sensor 1) (Bank 1)
TPS1B2 EC Throttle Position Sensor (Sensor 1) (Bank 2)
TPS2B1 EC Throttle Position Sensor (Sensor 2) (Bank 1)
TPS2B2 EC Throttle Position Sensor (Sensor 2) (Bank 2)
TPS3B1 EC Throttle Position Sensor (Bank 1)
TPS3B2 EC Throttle Position Sensor (Bank 2)
TRNSCV BL Homelink Universal Transceiver
TURN LT Turn Signal and Hazard Warning Lamp
T/WARN WT Low Tire Pressure Warning System
VDC BRC Vehicle Dynamics Control System
VEHSEC BL Vehicle Security System
VENT/V EC EVAP Canister Vent Control Valve
VSSA/T AT Vehicle Speed Sensor A/T (Revolution Sensor)
WARN DI Warning Lamps
WINDOW GW Power Window
WIPER WW Front Wiper and Washer
WIP/R WW Rear Wiper and Washer Code Section Wiring Diagram Name