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K ELECTRICAL

POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
SECTION PG B

E
CONTENTS
PRECAUTIONS ......................................................... 3 . Terminals and Reference Values for IPDM E/R ..... 25 . F
Precautions for Supplemental Restraint System IPDM E/R Power/Ground Circuit Inspection .......... 28 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Inspection with CONSULT-II (Self-Diagnosis) ....... 29 .
SIONER" ................................................................. 3
. Removal and Installation of IPDM E/R .................. 29 . G
POWER SUPPLY ROUTING CIRCUIT ..................... 4 . REMOVAL .......................................................... 29
.
Schematic ............................................................... 4
. INSTALLATION .................................................. 29 .
Wiring Diagram -- POWER -- ................................ 6 . GROUND CIRCUIT .................................................. 30 .
H
BATTERY POWER SUPPLY -- IGNITION Ground Distribution ................................................ 30
.
SWITCH IN ANY POSITION ................................ 6 . MAIN HARNESS ................................................ 30 .
ACCESSORY POWER SUPPLY -- IGNITION ENGINE ROOM HARNESS ............................... 33 .
SWITCH IN ACC AND/OR ON ...........................11 . ENGINE CONTROL HARNESS ......................... 35 . I
IGNITION POWER SUPPLY -- IGNITION BODY HARNESS ............................................... 36 .
SWITCH IN ON .................................................. 12 . BODY NO. 2 HARNESS .................................... 37 .
IGNITION POWER SUPPLY -- IGNITION BACK DOOR HARNESS ................................... 38 . J
SWITCH IN ON AND/OR START. ...................... 13 . HARNESS ................................................................ 39
.
IGNITION POWER SUPPLY -- IGNITION Harness Layout ..................................................... 39
.
SWITCH IN START ............................................ 15 . HOW TO READ HARNESS LAYOUT ................ 39 .
PG
Fuse ...................................................................... 16
. OUTLINE ............................................................ 40
.
Fusible Link ........................................................... 16
. MAIN HARNESS ................................................ 41 .
Circuit Breaker (Built Into BCM) ............................ 16 . ENGINE ROOM HARNESS (LH VIEW) ............. 43 .
Circuit Breaker ...................................................... 16
. ENGINE ROOM HARNESS (RH VIEW) ............ 45 . L
IPDM E/R (INTELLIGENT POWER DISTRIBUTION ENGINE CONTROL HARNESS ......................... 47 .
MODULE ENGINE ROOM) ..................................... 17 . BODY HARNESS ............................................... 49 .
System Description ............................................... 17 . BODY NO. 2 HARNESS .................................... 51 . M
SYSTEMS CONTROLLED BY IPDM E/R .......... 17 . ROOM LAMP HARNESS ................................... 53 .
CAN COMMUNICATION LINE CONTROL ........ 17 . FRONT DOOR LH HARNESS ........................... 55 .
IPDM E/R STATUS CONTROL .......................... 18 . FRONT DOOR RH HARNESS ........................... 56 .
CAN Communication System Description ............. 18 . REAR DOOR LH HARNESS .............................. 57 .
Function of Detecting Ignition Relay Malfunction ... 18 REAR DOOR RH HARNESS ............................. 58 .
CONSULT-II Function (IPDM E/R) ........................ 19 . BACK DOOR HARNESS ................................... 59 .
CONSULT-II START PROCEDURE ................... 19 . Wiring Diagram Codes (Cell Codes) ..................... 61 .
SELF-DIAGNOSTIC RESULTS ......................... 19 . ELECTRICAL UNITS LOCATION ........................... 64 .
DATA MONITOR ................................................ 20 . Electrical Units Location ........................................ 64 .
CAN DIAG SUPPORT MNTR ............................ 20 . ENGINE COMPARTMENT ................................. 64 .
ACTIVE TEST .................................................... 20 . PASSENGER COMPARTMENT ........................ 65 .
Auto Active Test .................................................... 21. LUGGAGE COMPARTMENT ............................. 67 .
DESCRIPTION ................................................... 21 . HARNESS CONNECTOR ........................................ 68 .
OPERATION PROCEDURE .............................. 21 . Description ............................................................. 68
.
INSPECTION IN AUTO ACTIVE TEST MODE ... 22 HARNESS CONNECTOR (TAB-LOCKING
IPDM E/R Terminal Arrangement .......................... 24 .

Revision: June 2006 PG-1 2007 Versa
TYPE) ................................................................. 68
. STANDARDIZED RELAY .........................................73 .
HARNESS CONNECTOR (SLIDE-LOCKING Description .............................................................73
.
TYPE) ................................................................. 69
. NORMAL OPEN, NORMAL CLOSED AND
HARNESS CONNECTOR (LEVER LOCKING MIXED TYPE RELAYS .......................................73 .
TYPE) ................................................................. 70
. TYPE OF STANDARDIZED RELAYS .................73 .
HARNESS CONNECTOR (DIRECT-CONNECT SUPER MULTIPLE JUNCTION (SMJ) .....................75 .
SRS COMPONENT TYPE) ................................ 71 . Terminal Arrangement ............................................75 .
ELECTRICAL UNITS ............................................... 72 . FUSE BLOCK-JUNCTION BOX (J/B) .....................76 .
Terminal Arrangement ........................................... 72 . Terminal Arrangement ............................................76 .
FUSE AND FUSIBLE LINK BOX .............................77 .
Terminal Arrangement ............................................77 .

Revision: June 2006 PG-2 2007 Versa
PRECAUTIONS

PRECAUTIONS PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS00JL2

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front C
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING: D
G To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer. E
G Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. F
G Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
G

Revision: June 2006 PG-3 2007 Versa
POWER SUPPLY ROUTING CIRCUIT

POWER SUPPLY ROUTING CIRCUIT PFP:24110

Schematic EKS00I5G

For detailed ground distribution, refer to PG-30, "Ground Distribution" .

LKWA0370E

Revision: June 2006 PG-4 2007 Versa
POWER SUPPLY ROUTING CIRCUIT

LKWA0371E

Revision: June 2006 PG-5 2007 Versa
POWER SUPPLY ROUTING CIRCUIT

Wiring Diagram -- POWER -- EKS00I5H

BATTERY POWER SUPPLY -- IGNITION SWITCH IN ANY POSITION

LKWA0372E

Revision: June 2006 PG-6 2007 Versa
POWER SUPPLY ROUTING CIRCUIT

LKWA0373E

Revision: June 2006 PG-7 2007 Versa
POWER SUPPLY ROUTING CIRCUIT

LKWA0374E

Revision: June 2006 PG-8 2007 Versa
POWER SUPPLY ROUTING CIRCUIT

LKWA0375E

Revision: June 2006 PG-9 2007 Versa
POWER SUPPLY ROUTING CIRCUIT

LKWA0376E

Revision: June 2006 PG-10 2007 Versa
POWER SUPPLY ROUTING CIRCUIT

ACCESSORY POWER SUPPLY -- IGNITION SWITCH IN ACC AND/OR ON
A

LKWA0377E

Revision: June 2006 PG-11 2007 Versa
POWER SUPPLY ROUTING CIRCUIT

IGNITION POWER SUPPLY -- IGNITION SWITCH IN ON

LKWA0378E

Revision: June 2006 PG-12 2007 Versa
POWER SUPPLY ROUTING CIRCUIT

IGNITION POWER SUPPLY -- IGNITION SWITCH IN ON AND/OR START.
A

LKWA0379E

Revision: June 2006 PG-13 2007 Versa
POWER SUPPLY ROUTING CIRCUIT

LKWA0381E

Revision: June 2006 PG-14 2007 Versa
POWER SUPPLY ROUTING CIRCUIT

IGNITION POWER SUPPLY -- IGNITION SWITCH IN START
A

LKWA0380E

Revision: June 2006 PG-15 2007 Versa
POWER SUPPLY ROUTING CIRCUIT

Fuse EKS00I5I

G If fuse is blown, be sure to eliminate cause of malfunction before
installing new fuse.
G Use fuse of specified rating. Never use fuse of more than speci-
fied rating.
G Do not partially install fuse; always insert it into fuse holder prop-
erly.
G Remove fuse for "ELECTRICAL PARTS (BAT)" if vehicle is not
used for a long period of time.

CEL083

Fusible Link EKS00I5J

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:
G 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.
G Never wrap outside of fusible link with vinyl tape. Important:
Never let fusible link touch any other wiring harness, vinyl
or rubber parts. LKIA0830E

Circuit Breaker (Built Into BCM) EKS00JLI

For example, when current is 30A, the circuit is broken within 8 to 20
seconds.
A circuit breaker is used for the following systems:
G Power windows
G Power sunroof

SBF284E

Circuit Breaker EKS00I5K

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: June 2006 PG-16 2007 Versa
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7 A
System Description EKS00JLJ

G 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 relays via IPDM E/R control cir-
cuits.
G IPDM E/R-integrated control circuits perform ON-OFF operation of relays, CAN communication control, oil
pressure switch signal reception, etc. C
G It controls operation of each electrical component via ECM, 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 lines, it receives signals from the BCM and controls the following lamps:
G Headlamps (High, Low)

G Parking lamps F
G Tail and license plate lamps

G Front fog lamps

2. Wiper control G
Using CAN communication lines, it receives signals from the BCM and controls the front wipers.
3. Rear window defogger relay control
Using CAN communication lines, it receives signals from the BCM and controls the rear window defogger H
relay.
4. A/C compressor control
Using CAN communication lines, it receives signals from the ECM and controls the A/C compressor I
(magnet clutch).
5. Starter control
Using CAN communication lines, it receives signals from the BCM and controls the starter relay. J
6. Cooling fan control
Using CAN communication lines, it receives signals from the ECM and controls the cooling fan relays.
7. Horn control PG
Using CAN communication lines, it receives signals from the BCM and controls the horn relay.
8. Daytime light system control (Canada only)
Using CAN communication lines, it receives signals from the BCM and controls the daytime light relay.
L
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 a maximum amount of information with minimum wiring. Each control unit can M
transmit and receive data, and reads necessary information only.
1. Fail-safe control
G When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control.
After CAN communication returns to normal operation, it also returns to normal control.
G Operation of control parts by IPDM E/R during fail-safe mode is as follows:

Controlled system Fail-safe mode
G With the ignition switch ON, headlamp low relay is ON, headlamp high relays are OFF,
Headlamp and daytime light system (Canada only) is OFF.
G With the ignition switch OFF, the headlamp relays are OFF.
Tail, license plate and parking lamps G With the ignition switch ON, the tail lamp relay is ON.
G With the ignition switch OFF, the tail lamp relay is OFF.
G With the ignition switch ON, cooling fan relay-1, relay-2, and relay-3 are ON.
Cooling fan
G With the ignition switch OFF, all cooling fan relays are OFF.
Until the ignition switch is turned off, the front wiper relays remain in the same status they
Front wiper
were in just before fail-safe control was initiated.

Revision: June 2006 PG-17 2007 Versa
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

Controlled system Fail-safe mode
Rear window defogger Rear window defogger relay OFF
A/C compressor A/C relay is OFF
Front fog lamps Front fog lamp relay OFF

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
G CAN communication is normally performed with other control units.

G Individual unit control by IPDM E/R is normally performed.

G When sleep request signal is received from BCM, mode is switched to sleep waiting status.

2. Sleep waiting status
G Process to stop CAN communication is activated.

G All systems controlled by IPDM E/R are stopped. When 1 second has elapsed after CAN communica-
tion with other control units is stopped, mode switches to sleep status.
3. Sleep status
G IPDM E/R operates in low current-consumption mode.

G CAN communication is stopped.

G When a change in CAN communication signal is detected, mode switches to CAN communication sta-
tus.
G When a change in ignition switch signal is detected, mode switches to CAN communication status.

CAN Communication System Description EKS00JLK

Refer to LAN-4, "SYSTEM DESCRIPTION" .
Function of Detecting Ignition Relay Malfunction EKS00JLL

G When the integrated ignition relay is stuck in a "closed contact" position and cannot be turned OFF, IPDM
E/R turns ON tail and parking lamps for 10 minutes to indicate IPDM E/R malfunction.
G When the state of the integrated ignition relay does not agree with the state of the ignition switch signal
received via CAN communication, the IPDM E/R activates the tail lamp relay.
Ignition switch signal Ignition relay status Tail lamp relay
ON ON --
OFF OFF --
ON OFF --
OFF ON ON (10 minutes)

NOTE:
When the ignition switch is turned ON, the tail lamps are OFF.

Revision: June 2006 PG-18 2007 Versa
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

CONSULT-II Function (IPDM E/R) EKS00JLM

A
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
IPDM E/R diagnostic Mode Description
SELF-DIAG RESULTS Displays IPDM E/R self-diagnosis results. B
DATA MONITOR Displays IPDM E/R input/output data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
C
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.

CONSULT-II START PROCEDURE
D
Refer to GI-38, "CONSULT-II Start Procedure" .
SELF-DIAGNOSTIC RESULTS
Display Item List E
CONSULT-II TIME Possible causes
Display items Malfunction detection
display code CRNT PAST
F
NO DTC IS
DETECTED. FUR-
-- -- -- -- --
THER TESTING MAY
BE REQUIRED. G
G If CAN communication reception/transmis- Any of items listed
sion data has a malfunction, or if any of the below have errors:
control units fail, data reception/transmis-
CAN COMM CIRC U1000 X X G TRANSMIT DIAG H
sion cannot be confirmed.
G ECM
G When the data in CAN communication is
not received before the specified time. G BCM/SEC
I
NOTE:
The details for display of the period are as follows:
G CRNT: Error currently detected with IPDM E/R. J
G PAST: Error detected in the past and placed in IPDM E/R memory.

Revision: June 2006 PG-19 2007 Versa
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

DATA MONITOR
All Signals, Main Signals, Selection From Menu
CONSULT-II Monitor item selection
Item name screen display Display or unit ALL MAIN SELECTION Description
SIGNALS SIGNALS FROM MENU
MOTOR FAN
Motor fan request 1/2/3/4 X X X Signal status input from ECM
REQ
Compressor
AC COMP REQ ON/OFF X X X Signal status input from ECM
request
Parking, license,
and tail lamp TAIL & CLR REQ ON/OFF X X X Signal status input from BCM
request
Headlamp low
HL LO REQ ON/OFF X X X Signal status input from BCM
beam request
Headlamp high
HL HI REQ ON/OFF X X X Signal status input from BCM
beam request
Front fog request FR FOG REQ ON/OFF X X X Signal status input from BCM
FR wiper request FR WIP REQ STOP/1LO/LO/HI X X X Signal status input from BCM
WIP AUTO
Wiper auto stop ACT P/STOP P X X X Output status of IPDM E/R
STOP
Wiper protection WIP PROT OFF/LS/HS/Block X X X Control status of IPDM E/R
Starter request ST RLY REQ ON/OFF X X Status of input signal (*1)
Ignition relay Ignition relay status monitored
IGN RLY ON/OFF X X X
status with IPDM E/R
Rear defogger
RR DEF REQ ON/OFF X X X Signal status input from BCM
request
Oil pressure Signal status input from IPDM
OIL P SW OPEN/CLOSE X X
switch E/R
Signal status input from IPDM
Hood switch HOOD SW (*2) OFF X X
E/R
Theft warning
THFT HRN REQ ON/OFF X X Signal status input from BCM
horn request
Horn chirp HORN CHIRP ON/OFF X X Output status of IPDM E/R
Daytime light
DTRL REQ ON/OFF X X Signal status input from BCM
request
*1 Perform monitoring of IPDM E/R data with the ignition switch ON. When the ignition switch is in ACC position, display may not be cor-
rect.
*2 This item is displayed, but does not function.

CAN DIAG SUPPORT MNTR
Refer to LAN-4, "SYSTEM DESCRIPTION" .
ACTIVE TEST
Display Item List
Test name CONSULT-II screen display Description
With a certain ON-OFF operation (OFF, TAIL, LO, HI, FOG), the front
Head, tail, fog lamp output EXTERNAL LAMP fog lamp, headlamp low, headlamp high RH, headlamp high LH, and
tail lamp relays can be operated.
With a certain ON-OFF operation, the rear defogger relay can be oper-
Rear defogger output REAR DEFOGGER
ated.
With a certain operation (OFF, HI ON, LO ON), the front wiper relays
Front wiper (HI, LO) output FRONT WIPER
(Lo, Hi) can be operated.

Revision: June 2006 PG-20 2007 Versa
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

Test name CONSULT-II screen display Description
A
With a certain operation (1, 2, 3, 4), the cooling fan relays can be oper-
Cooling fan output MOTOR FAN
ated.
Horn output HORN With a certain ON-OFF operation, the horn relay can be operated.
B

Auto Active Test EKS00JLN

DESCRIPTION C
G In auto active test mode, operation inspection can be performed when IPDM E/R sends a drive signal to
the following systems:

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