2008 NISSAN LATIO ignition

BCM (BODY CONTROL MODULE)
BCS-15
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
L
MA
B
BCS
N
O
P
*1: With Intelligent Key
*2: Hatchback without Intelligent Key
*3: Sedan without Intelligent Key
*4: Hatchback
*5: Sedan
BCM Power Supply and Ground Circuit InspectionINFOID:0000000001704589
1.CHECK FUSES AND FUSIBLE LINK
• Check 40A fusible link (letter g , located in the fuse and fusible link box).
• Check 10A fuses [No. 6, 8 and 20, located in the fuse block (J/B)].
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
3 .
2.CHECK BCM POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connectors and ground.
OK or NG
66 GFront door lock actua-
tor RH, rear door lock
actuators LH/RH (un-
lock)Output OFFOFF (neutral) 0V
ON (unlock) Battery voltage
67 B Ground Input ON — 0V
68 LPower window power
supply (RAP)Output —Ignition switch ON Battery voltage
Within 45 seconds after igni-
tion switch OFFBattery voltage
More than 45 seconds after ig-
nition switch OFF0V
When front door LH or RH is
open or power window timer
operates0V
69 P Battery power supply Output OFF — Battery voltage
70 Y Battery power supply Input OFF — Battery voltage Te r m i n a lWire
colorSignal nameSignal
input/
outputMeasuring condition
Reference value or waveform
(Approx.) Ignition
switchOperation or condition
ConnectorTe r m i n a l s
Power
sourceConditionVoltage (V) (Ap-
prox.)
(+) (-)
M1811 GroundACC
power
supplyIgnition
switch
ACC or
ONBattery voltage
38 GroundIgnition
power
supplyIgnition
switch ON
or STARTBattery voltage
M2057 GroundBattery
power
supplyIgnition
switch
OFFBattery voltage
70 GroundBattery
power
supplyIgnition
switch
OFFBattery voltage
LIIA2415E

BCS-18
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
• WRITE CONFIGURATION-Manual selection is the function to select and write vehicle configuration on BCM
manually.
• WRITE CONFIGURATION-Config file is the function to write vehicle configuration with the data extracted
from current BCM.
• For READ CONFIGURATION and WRITE CONFIGURATION-Config file, refer to CONSULT-III Operation
Manual.
• For WRITE CONFIGURATION-Manual selection using the following flow chart, identify the correct model
and configuration list. Confirm and/or change setting value for each item according to the configuration list.
Depending on CONSULT-III software version being used, some or all of the write configuration items shown
in the following configuration lists may be displayed. If an item does not appear on the CONSULT-III WRITE
CONFIGURATION-Manual selection screen(s), then it is an auto setting item and it cannot be manually set
or changed.
NOTE:
Confirm vehicle model on IDENTIFICATION PLATE. Refer to GI-43, "
Model Variation".
CAUTION:
• When replacing BCM, you must perform WRITE CONFIGURATION with CONSULT-III.
• Complete the procedure of WRITE CONFIGURATION in order.
• If you set incorrect WRITE CONFIGURATION, incidents will occur.
• Configuration is different for each vehicle model. Confirm configuration of each vehicle model.
Removal and Installation of BCMINFOID:0000000001704593
REMOVAL
1. Remove the glove box. Refer to IP-11, "Removal and Installation".
2. Remove the BCM screws, disconnect the connectors and
remove the BCM (1).
INSTALLATION
Installation is in the reverse order of removal.
NOTE:
• When replacing BCM, it must be configured. Refer to BCS-17, "
Configuration".
• When replacing BCM, perform initialization of NATS system and registration of all NATS ignition key IDs.
Refer to BL-210
.
• When replacing BCM, if new BCM does not come with keyfobs attached, all existing keyfobs must be re-reg-
istered.
ITEM SET VAL
KEYLESS ENTRY WITH ⇔ WITHOUT
I-KEY WITH ⇔ WITHOUT
DTRL WITH ⇔ WITHOUT
THEFT ALARM WITH ⇔ WITHOUT
WKIA5672E

BL-1
BODY
C
D
E
F
G
H
J
K
L
M
SECTION BL
A
B
BL
N
O
P
CONTENTS
BODY, LOCK & SECURITY SYSTEM
SERVICE INFORMATION ............................4
PRECAUTIONS ...................................................4
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
4
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .....................................
4
Precaution for Procedure without Cowl Top Cover ......5
Precaution for Work ..................................................5
PREPARATION ...................................................6
Special Service Tool .................................................6
Commercial Service Tool ..........................................6
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ................................................................
7
Work Flow .................................................................7
Generic Squeak and Rattle Troubleshooting ............9
Diagnostic Worksheet .............................................11
HOOD .................................................................13
Fitting Adjustment ...................................................13
Removal and Installation .........................................14
Removal and Installation of Hood Lock Control ......15
Hood Lock Control Inspection .................................17
RADIATOR CORE SUPPORT ...........................19
Removal and Installation .........................................19
FRONT FENDER ................................................21
Removal and Installation .........................................21
POWER DOOR LOCK SYSTEM ........................22
Component Parts and Harness Connector Loca-
tion ..........................................................................
22
System Description .................................................22
CAN Communication System Description ...............24
Schematic ...............................................................25
Wiring Diagram - D/LOCK - .....................................26
Schematic ...............................................................30
Wiring Diagram - D/LOCK - .....................................31
Terminal and Reference Value for BCM ..................35
Work Flow ................................................................35
CONSULT-III Function (BCM) .................................36
Trouble Diagnosis Symptom Chart ..........................37
BCM Power Supply and Ground Circuit ..................37
Door Switch Check (Hatchback) ..............................37
Door Switch Check (Sedan) ....................................40
Key Switch (Insert) Check .......................................41
Door Lock and Unlock Switch Check ......................42
Front Door Lock Assembly LH (Actuator) Check .....45
Door Lock Actuator Check (Front RH and Rear
LH/RH) .....................................................................
46
Front Door Key Cylinder Switch LH Check ..............47
Passenger Select Unlock Relay Circuit Inspection
(With Intelligent Key) ...............................................
48
REMOTE KEYLESS ENTRY SYSTEM .............51
Component Parts and Harness Connector Loca-
tion ...........................................................................
51
System Description ..................................................51
CAN Communication System Description ...............53
Schematic ................................................................54
Wiring Diagram - KEYLES - ....................................55
Terminal and Reference Value for BCM ..................57
How to Perform Trouble Diagnosis ..........................57
Preliminary Check ...................................................58
CONSULT-III Function (BCM) .................................58
Work Flow ................................................................59
Trouble Diagnosis Symptom Chart ..........................60
Keyfob Battery and Function Check ........................61
ACC Switch Check ..................................................62
Door Switch Check (Hatchback) ..............................62
Door Switch Check (Sedan) ....................................65
Key Switch (Insert) Check .......................................66
Hazard Function Check ...........................................67
Horn Function Check ...............................................67
Interior Lamp and Ignition Keyhole Illumination
Function Check ........................................................
68
Remote Keyless Entry Receiver Check ...................68
Keyfob Function (Lock) Check ................................71
Keyfob Function (Unlock) Check .............................71

BL-2
ID Code Entry Procedure .......................................71
Keyfob Battery Replacement ..................................73
Removal and Installation of Remote Keyless Entry
Receiver .................................................................
73
INTELLIGENT KEY SYSTEM ............................74
Component Parts and Harness Connector Loca-
tion ..........................................................................
74
System Description .................................................76
CAN Communication System Description ..............83
Schematic ...............................................................84
Wiring Diagram - I/KEY - ........................................86
Intelligent Key Unit Harness Connector Terminal
Layout .....................................................................
96
Terminal and Reference Value for Intelligent Key
Unit .........................................................................
96
Steering Lock Solenoid Harness Connector Ter-
minal Layout ...........................................................
98
Terminal and Reference Value for Steering Lock
Solenoid ..................................................................
98
Terminal and Reference Value for BCM .................99
Trouble Diagnosis Procedure .................................99
CONSULT-III Functions (INTELLIGENT KEY) ......100
CONSULT-III Application Item ...............................101
Trouble Diagnosis Symptom Chart ........................103
CAN Communication System Inspection ...............109
Power Supply and Ground Circuit Inspection ........110
Key Switch (Intelligent Key Unit Input) Check .......110
Key Switch (BCM Input) Check .............................112
Ignition Knob Switch Check ...................................113
Door Switch Check (Hatchback) ............................114
Door Switch Check (Sedan) ..................................117
Door Request Switch Check ..................................118
Back Door Request Switch Check (Hatchback) ....120
Trunk Opener Request Switch Check (Sedan) .....122
Unlock Sensor Check ............................................124
Intelligent Key Warning Buzzer(s) Check ..............125
Outside Key Antenna (Driver Side and Passenger
Side) Check ...........................................................
126
Outside Key Antenna (Rear Bumper) Check .........128
Inside Key Antenna Check ....................................129
Steering Lock Solenoid Check ..............................131
Key Interlock Solenoid (With M/T) Check ..............133
Ignition Switch Position Check ..............................134
Stop Lamp Switch Check (With CVT) ....................134
Stop Lamp Switch Check (With M/T) .....................135
Check CVT Device (Park Position Switch) Check ..136
"P-SHIFT" Warning Lamp (With CVT) Check ........138
"LOCK" Warning Lamp (With M/T) Check .............138
"KEY" Warning Lamp (RED) Check ......................139
"KEY" Warning Lamp (GREEN) Check .................139
Check Warning Chime in Combination Meter ........140
Hazard Function Check .........................................140
Horn Function Check .............................................140
Headlamp Function Check ....................................141
Intelligent Key Battery Replacement .....................142
Remote Keyless Entry Function ............................142
Removal and Installation of Intelligent Key Unit ....142
DOOR ...............................................................144
Fitting Adjustment .................................................144
Removal and Installation .......................................147
FRONT DOOR LOCK .......................................150
Component Parts Location ...................................150
Removal and Installation .......................................150
REAR DOOR LOCK .........................................153
Component Parts Location ...................................153
Removal and Installation .......................................153
BACK DOOR LOCK .........................................156
Component Parts and Harness Connector Loca-
tion ........................................................................
156
System Description ...............................................156
Wiring Diagram - B/DOOR - ..................................157
Terminal and Reference Value for BCM ...............158
Terminal and Reference Value for Intelligent Key
Unit ........................................................................
158
CONSULT-III Function (BCM) ..............................159
Work Flow .............................................................159
Trouble Diagnosis Chart by Symptom ..................159
BCM Power Supply and Ground Circuit ................160
Check Back Door Opener Switch Circuit (Without
Intelligent Key or Power Windows) .......................
160
Check Back Door Opener Switch Circuit (Without
Intelligent Key, with Power Windows) ...................
162
Check Back Door Opener Switch Circuit (With In-
telligent Key) .........................................................
165
Check Back Door Lock Assembly (Actuator) Cir-
cuit ........................................................................
166
Removal and Installation .......................................168
TRUNK LID .......................................................170
Fitting Adjustment .................................................170
Trunk Lid Assembly ..............................................170
Trunk Lid Lock ......................................................171
Trunk Lid Striker ....................................................171
TRUNK LID OPENER .......................................173
Component Parts and Harness Connector Loca-
tion ........................................................................
173
System Description ...............................................173
Wiring Diagram - TLID - ........................................174
Terminal and Reference Value for BCM ...............175
Terminal and Reference Value for Intelligent Key
Unit ........................................................................
175
CONSULT-III Function (BCM) ..............................176
Work Flow .............................................................176
Trouble Diagnosis Chart by Symptom ..................176
BCM Power Supply and Ground Circuit ................177
Check Trunk Lid Opener Switch Circuit (Without
Intelligent Key or Power Windows) .......................
177
Check Trunk Lid Opener Switch Circuit (Without
Intelligent Key, with Power Windows) ...................
179
Check Trunk Lid Opener Switch Circuit (With Intel-
ligent Key) .............................................................
182
Check Trunk Release Solenoid Circuit .................183

BL-4
< SERVICE INFORMATION >
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001703938
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
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
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:
• 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 performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.
• 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 har-
ness connectors.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000001703939
NOTE:
• This procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
• Remove and install all control units after disconnecting both battery cables with the ignition in the ″LOCK″
position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-III.

BL-22
< SERVICE INFORMATION >
POWER DOOR LOCK SYSTEM
POWER DOOR LOCK SYSTEM
Component Parts and Harness Connector LocationINFOID:0000000001703953
System DescriptionINFOID:0000000001703954
Power is supplied at all times
• through 40A fusible link (letter g , located in the fuse and fusible link box)
LIIA2593E
1. BCM M18, M19, M20
(view with glove box removed)2. Intelligent Key unit M52
(if equipped)3. Front door key cylinder switch LH D14
4. Front door switch LH B8, RH B108 5. Front door lock actuator LH D3, RH D114 6. Rear door switch LH B6, RH B116
7. Rear door lock actuator LH D205,
RH D3058. Key switch and ignition knob switch M73
(with Intelligent Key)9. Key switch and key lock solenoid M27
(without Intelligent key)
10. Main power window and door lock/
unlock switch D7, D8
Power window and door lock/unlock
switch RH D10511. Fuse block (with Intelligent Key)
(view with instrument panel LH removed)12. Passenger select unlock relay M2
(with Intelligent Key)
13. Back door lock assembly (back door
switch) D405 (hatchback view with
back door open)

POWER DOOR LOCK SYSTEM
BL-23
< SERVICE INFORMATION >
C
D
E
F
G
H
J
K
L
MA
B
BL
N
O
P
• to BCM terminal 70
• through 10A fuse [No. 8, located in the fuse block (J/B)]
• to BCM terminal 57
• through 10A fuse [No. 14, located in the fuse block (J/B)]
• to key switch terminal 2 (without Intelligent Key system)
• through 10A fuse [No. 31, located in the fuse block (J/B)]
• to key switch and ignition knob switch terminals 2 and 4 (with Intelligent Key system).
When key switch is ON (key is inserted in ignition key cylinder), power is supplied
• through key switch terminal 1 (without Intelligent Key system) or key switch and ignition knob terminal 1 (with
Intelligent Key system)
• to BCM terminal 37.
Ground is supplied
• to BCM terminal 67
• through body grounds M57 and M61.
LOCK OPERATION
When the door is locked with main power window and door lock/unlock switch, ground is supplied
• to BCM terminal 45
• through main power window and door lock and unlock switch terminals 17 and 18
• through body grounds M57 and M61.
When the door is locked with power window and door lock/unlock switch RH, ground is supplied
• to BCM terminal 45
• through power window and door lock and unlock switch RH terminals 1 and 3
• through body grounds M57 and M61.
When the door is locked with front door key cylinder switch LH, ground is supplied
• to BCM terminal 8
• through front door key cylinder switch LH terminals 1 and 2
• through body grounds M57 and M61.
UNLOCK OPERATION
When the door is unlocked with main power window and door lock/unlock switch, ground is supplied
• to BCM terminal 46
• through main power window and door lock/unlock switch terminals 6 and 17
• through body grounds M57 and M61.
When the door is unlocked with power window and door lock/unlock switch RH, ground is supplied
• to BCM terminal 46
• through power window and door lock and unlock switch RH terminals 2 and 3
• through body grounds M57 and M61.
When the door is unlocked with front door key cylinder switch LH, ground is supplied
• to BCM terminal 7
• through front door key cylinder switch LH terminals 2 and 3
• through body grounds M57 and M61.
When the front door switch LH is ON (door is OPEN), ground is supplied
• to BCM terminal 47
• through front door switch LH terminal 2
• through front door switch LH case ground.
When the front door switch RH is ON (door is OPEN), ground is supplied
• to BCM terminal 12
• through front door switch RH terminal 2
• through front door switch RH case ground.
When the rear door switch LH is ON (door is OPEN), ground is supplied
• to BCM terminal 48
• through rear door switch LH terminal 1
• through rear door switch LH case ground.
When the rear door switch RH is ON (door is OPEN), ground is supplied
• to BCM terminal 13
• through rear door switch RH terminal 1
• through rear door switch RH case ground.
When the back door switch (hatchback) is ON (back door is OPEN), ground is supplied
• to BCM terminal 43
• through back door switch terminals 3 and 4
• through body grounds B117, B132 and D402.

BL-24
< SERVICE INFORMATION >
POWER DOOR LOCK SYSTEM
OUTLINE
Functions available by operating the inside door lock and unlock switches
• Interlocked with the locking operation of door lock and unlock switch, door lock actuators of all doors are
locked.
• Interlocked with the unlocking operation of door lock and unlock switch, door lock actuators of all doors are
unlocked.
Functions available by operating the front door key cylinder switch LH
• Interlocked with the locking operation of front door key cylinder switch LH, door lock actuators of all doors
are locked.
• When front door key cylinder switch LH is unlocked, front door lock actuator LH is unlocked.
• When front door key cylinder switch LH is unlocked for the second time within 5 seconds after the first oper-
ation, door lock actuators on all doors are unlocked.
Key reminder door system
When door lock and unlock switch is operated to lock doors with ignition key inserted in key cylinder and any
door open, all door lock actuators are locked and then unlocked.
CAN Communication System DescriptionINFOID:0000000001703955
Refer to LAN-6 .