2008 NISSAN LATIO fuse box

LT-72
< SERVICE INFORMATION >
PARKING, LICENSE PLATE AND TAIL LAMPS
PARKING, LICENSE PLATE AND TAIL LAMPS
Component Parts and Harness Connector LocationINFOID:0000000001704447
System DescriptionINFOID:0000000001704448
The control of the parking, license plate and tail lamp operation is dependent upon the position of lighting
switch. When the lighting switch is placed in the 1ST position, the BCM (body control module) receives input
signal requesting the parking, license plate and tail lamps to illuminate. This input signal is communicated to
the IPDM E/R (intelligent power distribution module engine room) via the CAN communication lines. The CPU
(central processing unit) located in the IPDM E/R controls the tail lamp relay coil. This relay, when energized,
directs power to parking, license plate and tail lamps, which then illuminate.
Power is supplied at all times
• to ignition relay located in IPDM E/R,
• to tail lamp relay located in IPDM E/R,
• through 15A fuse (No. 52, located in IPDM E/R) and
• through 20A fuse (No. 53, located in IPDM E/R)
• to the CPU located in the IPDM E/R,
• through 40A fusible link (letter g , located in fuse and fusible link block)
• to BCM terminal 70,
• through 10A fuse [No. 8, located in fuse block (J/B)],
• to BCM terminal 57.
With the ignition switch in the ON or START position, power is supplied
• through 10A fuse [No. 6, located in fuse block (J/B)]
• to BCM terminal 38,
• to ignition relay located in IPDM E/R and
• through the ignition relay
• to the CPU of the IPDM E/R.
With the ignition switch in the ACC or ON position, power is supplied
• through 10A fuse [No. 20, located in fuse block (J/B)]
• to BCM terminal 11.
Ground is supplied
• to BCM terminal 67
• through grounds M20 and M61,
• to IPDM E/R terminals 59 and 39
• through grounds E15 and E24.
OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position, the BCM receives an input signal requesting parking,
license plate and tail lamps to illuminate. This input signal is communicated to the IPDM E/R via the CAN com-
munication lines. The CPU, located in the IPDM E/R, controls the tail lamp relay coil. When energized, the tail
lamp relay directs power
• through 10A fuse (No. 37, located in IPDM E/R),
• through IPDM E/R terminal 26
• to front combination lamp LH terminal 6, and
• through IPDM E/R terminal 27
1. IPDM E/R E45, E46 and E48 2. BCM M18 and M20 (view with glove
box removed)3. Combination switch (lighting switch)
M28
WKIA5554E

INTERIOR ROOM LAMP
LT-89
< SERVICE INFORMATION >
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INTERIOR ROOM LAMP
Component Parts and Harness Connector LocationINFOID:0000000001704468
System DescriptionINFOID:0000000001704469
When room lamp switch is in DOOR position, room lamp ON/OFF is controlled by timer according to signals
from switches including key switch, front door switch LH, unlock signal from keyfob, door lock and unlock
switch, key cylinder lock and unlock switch, ignition switch.
When room lamp turns ON, there is a gradual brightening over 1 second.
When room lamp turns OFF, there is a gradual dimming over 1 second.
Interior room lamp timer is controlled by BCM (body control module).
Interior room lamp timer control settings can be changed with CONSULT-III.
POWER SUPPLY AND GROUND
Power is supplied at all times (without Intelligent Key system)
• through 10A fuse [No. 14, located in fuse block (J/B)]
• to key switch and key lock solenoid terminal 2,
• through 10A fuse [No. 8, located in fuse block (J/B)]
• to BCM terminal 57,
• through 40A fusible link (letter g , located in fuse and fusible link box)
• to BCM terminal 70.
Power is supplied at all times (with Intelligent Key system)
1. BCM M18, M19 and M20 (view with
glove box removed)2. Key switch and key lock solenoid
(without Intelligent Key) M273. Key switch and ignition knob switch
(with Intelligent Key) M73
4. Front door switch LH B8 and RH
B1085. Rear door switch LH B6 and RH
B1166. Front door key cylinder switch LH
D14
7. Back door lock assembly D405
(hatchback)8. Trunk lamp switch and trunk release
solenoid B127 (sedan)
LIIA2936E

LT-90
< SERVICE INFORMATION >
INTERIOR ROOM LAMP
• through 10A fuse (No. 31, located in fuse and fusible link box)
• to key switch and ignition knob switch terminals 2 and 4,
• through 10A fuse [No. 8, located in fuse block (J/B)]
• to BCM terminal 57,
• through 40A fusible link (letter g , located in fuse and fusible link box)
• to BCM terminal 70.
When key is inserted in the key switch and key lock solenoid, power is supplied (without Intelligent Key sys-
tem)
• through key switch and key lock solenoid terminal 1
• to BCM terminal 37.
When key is inserted in the key switch and ignition knob switch, power is supplied (with Intelligent Key system)
• through key switch and ignition knob switch terminal 1
• to BCM terminal 37.
When ignition knob switch is pushed, power is supplied (with Intelligent Key system)
• through key switch and ignition knob switch terminal 3
• to Intelligent Key unit terminal 27.
With the ignition switch in the ON or START position, power is supplied
• through 10A fuse [No. 6, located in fuse block (J/B)]
• to BCM terminal 38.
Ground is supplied
• to BCM terminal 67
• through grounds M57 and M61.
When front door LH is opened, ground is supplied
• to BCM terminal 47
• through front door switch LH terminal 2
• through case ground of front door switch LH.
When front door RH is opened, ground is supplied
• to BCM terminal 12
• through front door switch RH terminal 2
• through case ground of front door switch RH.
When rear door LH is opened, ground is supplied
• to BCM terminal 48
• through rear door switch LH terminal 1
• through case ground of rear door switch LH.
When rear door RH is opened, ground is supplied
• to BCM terminal 13
• through rear door switch RH terminal 1
• through case ground of rear door switch RH.
When back door (hatchback) is opened, ground is supplied
• to BCM terminal 43
• through back door lock assembly (back door switch) terminal 3
• through back door lock assembly (back door switch) terminal 4
• through grounds B117, B132 and D402.
When trunk lid (sedan) is opened, ground is supplied
• to BCM terminal 42
• through trunk lamp switch and trunk release solenoid terminal 3
• through trunk lamp switch and trunk release solenoid terminal 1
• through grounds B117 and B132.
When front door LH is unlocked by front door key cylinder switch LH, the BCM receives a ground signal
• to BCM terminal 7
• through front door key cylinder switch LH terminal 3
• through front door key cylinder switch LH terminal 2
• through grounds M57 and M61.
When a signal, or combination of signals is received by BCM, ground is supplied
• to room lamp terminal 2
• through map lamp terminals 5 and 2 (with map lamp)
• through BCM terminal 63.
With power and ground supplied, the interior room lamp illuminates.
SWITCH OPERATION
When map lamp switch is ON (with map lamp), ground is supplied
• through grounds M57 and M61.

INTERIOR ROOM LAMP
LT-91
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• to map lamp terminal 1
Power is supplied
• through BCM terminal 56
• to map lamp terminal 4.
When interior room lamp switch is ON, ground is supplied
• to interior room lamp terminal 1
• through map lamp (with map lamp) terminal 7
• through map lamp (with map lamp) terminal 1
• through grounds M57 and M61.
Power is supplied
• through BCM terminal 56
• through map lamp (with map lamp) terminal 4
• through map lamp (with map lamp) terminal 6
• to room lamp terminal 3.
INTERIOR ROOM LAMP TIMER OPERATION
Without Intelligent Key System
When room lamp switch is in DOOR position, and when all conditions below are met, BCM performs timer
control (maximum 30 seconds) for room lamp ON/OFF.
In addition, when the interior room lamp turns ON or OFF there is gradual brightening or dimming over 1 sec-
ond.
Power is supplied
• through 10A fuse [No. 14, located in fuse block (J/B)]
• to key switch and key lock solenoid terminal 2.
When the key is removed from ignition key cylinder (key switch OFF), power will not be supplied to BCM termi-
nal 37.
When front door key cylinder switch LH is unlocked, ground is supplied
• to BCM terminal 7
• through front door key cylinder switch LH terminal 3
• through front door key cylinder switch LH terminal 2
• through grounds M57 and M61.
At the time that front door LH is opened, BCM detects that front door LH is unlocked. It determines that interior
room lamp timer operation condition is met, and turns the room lamp ON for 30 seconds.
When key is in ignition key cylinder (key switch ON),
Power is supplied
• through key switch and key lock solenoid terminal 1
• to BCM terminal 37.
When key is removed from key switch and key lock solenoid (key switch OFF), the power supply to BCM ter-
minal 37 is terminated. BCM detects that key has been removed, determines that interior room lamp timer
conditions are met, and turns the room lamp ON for 30 seconds.
When front door LH opens → closes, and the key is not inserted in the key switch and key lock solenoid (key
switch OFF), voltage at BCM terminal 47 changes between 0V (door open) → 12V (door closed). The BCM
determines that conditions for room lamp operation are met and turns the room lamp ON for 30 seconds.
Interior room lamp timer control is canceled under the following conditions:
• Front door LH is locked (locked front door key cylinder switch LH).
• Front door LH is opened (front door switch LH).
• Ignition switch ON.
With Intelligent Key System
When the room lamp switch is in DOOR position, and when all conditions below are met, BCM performs timer
control (maximum 30 second) for room lamp ON/OFF.
In addition, when interior room lamp turns ON or OFF there is gradual brightening or dimming over 1 second.
Power is supplied
• through 10A fuse (No. 31, located in fuse and fusible link box)
• to key switch and ignition knob switch terminals 2 and 4.
When key is removed from ignition key cylinder (key switch OFF), power will not be supplied to BCM terminal
37.
When the ignition knob switch is released, power will not be supplied to Intelligent Key unit terminal 27.
When front door key cylinder switch LH is unlocked, ground is supplied
• to BCM terminal 7
• through front door key cylinder switch LH terminal 3

ILLUMINATION
LT-105
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ILLUMINATION
System DescriptionINFOID:0000000001704480
The control of the illumination lamps operation is dependent upon the position of the lighting switch. When the
lighting switch is placed in the 1ST or 2ND position, the BCM (body control module) receives input signal
requesting the illumination lamps to illuminate. This input signal is communicated to IPDM E/R (intelligent
power distribution module engine room) across CAN communication lines. CPU (central processing unit)
located in the IPDM E/R controls the tail lamp relay coil. This relay, when energized, directs power to the illu-
mination lamps, which then illuminate.
Power is supplied at all times
• to ignition relay, located in IPDM E/R,
• to tail lamp relay, located in IPDM E/R,
• through 15A fuse (No. 52, located in IPDM E/R) and
• through 20A fuse (No. 53, located in IPDM E/R)
• to CPU located in IPDM E/R,
• through 40A fusible link (letter g , located in fuse and fusible link box)
• to BCM terminal 70, and
• through 10A fuse [No. 8, located in fuse block (J/B)]
• to BCM terminal 57.
With the ignition switch in the ON or START position, power is supplied
• to ignition relay, located in IPDM E/R, and
• through 10A fuse [No. 6, located in fuse block (J/B)]
• to BCM terminal 38.
With the ignition switch in the ACC or ON position, power is supplied
• through 10A fuse [No. 20, located in fuse block (J/B)]
• to BCM terminal 11.
Ground is supplied
• to BCM terminal 67
• through grounds M57 and M61, and
• to IPDM E/R terminals 39 and 59
• through grounds E15 and E24.
ILLUMINATION OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position, BCM receives input signal requesting the illumination
lamps to illuminate. This input signal is communicated to IPDM E/R across CAN communication lines. CPU
located in the IPDM E/R controls the tail lamp relay coil, which, when energized, directs power
• through 10A fuse (No. 37, located in IPDM E/R)
• through IPDM E/R terminal 29
• to microphone terminal 3 (with Bluetooth)
• to illumination control switch terminal 1
• to glove box lamp terminal 1 (with glovebox lamp)
• to audio unit terminal 9
• to front air control terminal 5
• to A/T device terminal 3 (with 4-speed A/T)
• to CVT device terminal 3 (with CVT)
• to hazard switch terminal 3
• to combination meter terminal 12
• to door mirror remote control switch terminal 16, and
Ground is supplied
• to microphone terminal 2 (with Bluetooth)
• to glove box lamp terminal 2 (with glove box lamp), and
• to illumination control switch terminal 3
• through grounds M57 and M61.
The illumination control switch controls illumination intensity by varying the ground to the following
• through illumination control switch terminal 2
• to audio unit terminal 8
• to front air control terminal 6
• to A/T device terminal 4 (with 4-speed A/T)
• to CVT device terminal 3 (with CVT)
• to hazard switch terminal 4

PG-1
ELECTRICAL
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CONTENTS
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
POWER SUPPLY ROUTING CIRCUIT ...............3
Schematic .................................................................3
Wiring Diagram - POWER - ......................................5
Fuse ........................................................................15
Fusible Link .............................................................15
Circuit Breaker (Built Into BCM) ..............................15
Circuit Breaker ........................................................15
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) .................
16
System Description .................................................16
CAN Communication System Description ...............17
Function of Detecting Ignition Relay Malfunction ....17
CONSULT-III Function (IPDM E/R) .........................17
Auto Active Test ......................................................19
IPDM E/R Terminal Arrangement ...........................22
Terminal and Reference Value for IPDM E/R .........23
IPDM E/R Power/Ground Circuit Inspection ...........25
Inspection with CONSULT-III (Self-Diagnosis) .......26
Removal and Installation of IPDM E/R ....................26
GROUND CIRCUIT ...........................................28
Ground Distribution ..................................................28
HARNESS .........................................................37
Harness Layout .......................................................37
Wiring Diagram Codes (Cell Codes) .......................58
ELECTRICAL UNITS LOCATION ....................61
Electrical Units Location ..........................................61
HARNESS CONNECTOR .................................65
Description ...............................................................65
ELECTRICAL UNITS ........................................68
Terminal Arrangement .............................................68
STANDARDIZED RELAY .................................69
Description ...............................................................69
SUPER MULTIPLE JUNCTION (SMJ) .............71
Terminal Arrangement .............................................71
FUSE BLOCK-JUNCTION BOX (J/B) ..............72
Terminal Arrangement .............................................72
FUSE AND FUSIBLE LINK BOX ......................73
Terminal Arrangement .............................................73

PG-16
< SERVICE INFORMATION >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)
System DescriptionINFOID:0000000001704697
• IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block
which were originally placed in engine compartment. It controls integrated relays via IPDM E/R control cir-
cuits.
• IPDM E/R-integrated control circuits perform ON-OFF operation of relays, CAN communication control, oil
pressure switch signal reception, etc.
• 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.
SYSTEMS CONTROLLED BY IPDM E/R
1. Lamp control
Using CAN communication lines, it receives signals from the BCM and controls the following lamps:
• Headlamps (High, Low)
• Parking lamps
• Tail and license plate lamps
• Front fog lamps
2. Wiper control
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
relay.
4. A/C compressor control
Using CAN communication lines, it receives signals from the ECM and controls the A/C compressor
(magnet clutch).
5. Starter control
Using CAN communication lines, it receives signals from the BCM and controls the starter relay.
6. Cooling fan control
Using CAN communication lines, it receives signals from the ECM and controls the cooling fan relays.
7. Horn control
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.
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
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 returns to normal operation, it also returns to normal control.
• Operation of control parts by IPDM E/R during fail-safe mode is as follows:
Controlled system Fail-safe mode
Headlamp• With the ignition switch ON, headlamp low relay is ON, headlamp high relays are OFF, and
daytime light system (Canada only) is OFF.
• With the ignition switch OFF, the headlamp relays are OFF.
Tail, license plate and parking lamps • With the ignition switch ON, the tail lamp relay is ON.
• With the ignition switch OFF, the tail lamp relay is OFF.
Cooling fan• With the ignition switch ON, cooling fan relay-1, relay-2, and relay-3 are ON.
• With the ignition switch OFF, all cooling fan relays are OFF.
Front wiperUntil the ignition switch is turned off, the front wiper relays remain in the same status they
were in just before fail−safe control was initiated.

HARNESS
PG-41
< SERVICE INFORMATION >
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C3 E6 — : Fuse and fusible link box D3 E53 B/2: Front combination lamp LH
(parking)
B1 E7 SMJ : To M69
D3 E8 SMJ : To F8
B4 E9 BR/2 : Fusible link box (battery)
B3 E10 GR/2 : Fusible link box (battery)
B1 E11 B/2 : To M78
A3 E12 B/6 : Accelerator pedal position sensor
A2 E13 B/2 : Stop lamp switch (with M/T)
A2 E13 W/4 : Stop lamp switch (without M/T)
D3 E14 — : Engine ground (crash zone sensor)
C2 E15 — : Engine ground
B2 E16 B/32 : ECM
C5 E18 B/1 : Horn (low)
C4 E19 GR/6 : To F33
D5 E20 B/1 : Horn (low)
D3 E25 B/3: Front combination lamp LH
(headlamp)
E4 E27 B/2 : Front fog lamp LH
D4 E29 B/2: Front combination lamp LH
(turn signal)
B1 E31 W/24 : TCM
B1 E32 GR/24 : TCM
A2 E34 BR/2 : Clutch interlock switch (with M/T)
A2 E35 BR/2 : ASCD clutch switch
A2 E36 BR/2 : ASCD brake switch
B4 E40 GR/2 : Brake fluid level switch
D3 E42 B/2: IPDM E/R (Intelligent Power Distribu-
tion Module Engine Room)
C3 E43 W/16: IPDM E/R (Intelligent Power Distribu-
tion Module Engine Room)
C3 E44 W/6: IPDM E/R (Intelligent Power Distribu-
tion Module Engine Room)
D3 E45 BR/12: IPDM E/R (Intelligent Power Distribu-
tion Module Engine Room)
D3 E46 W/12: IPDM E/R (Intelligent Power Distribu-
tion Module Engine Room)