2009 NISSAN LATIO key battery

NATS (NISSAN ANTI-THEFT SYSTEM)
BL-253
< SERVICE INFORMATION >
C
D E
F
G H
J
K L
M A
B BL
N
O P
18 V
Remote keyless entry
receiver (ground) Output OFF — 0V
19 BR Remote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G Remote keyless entry
receiver signal (signal) Input OFFStand-by (keyfob buttons re-
leased)
When remote keyless entry
receiver receives signal from
keyfob (keyfob buttons
pressed)
21 P NATS antenna amp. Input/
Output OFF
→
ON Ignition switch (OFF
→ ON) Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
23 R Security indicator
lamp Output OFFGoes OFF
→ illuminates (Ev-
ery 2.4 seconds) Battery voltage
→ 0V
25 LG NATS antenna amp. Input/
Output OFF
→
ON Ignition switch (OFF
→ ON) Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then
return to battery voltage.
26 GR Thermo control amp. Input ON A/C switch ON
27 O Compressor ON sig-
nal Input ONA/C switch OFF 5V
A/C switch ON 0V
28 P Front blower monitor Input ON Front blower motor OFF Battery voltage
Front blower motor ON 0V
29 L Hazard switch Input OFF ON 0V
OFF 5V
Terminal
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition LIIA1893E
LIIA1894E
LIIA1895E
ZJIA0719J

BL-254< SERVICE INFORMATION >
NATS (NISSAN ANTI-THEFT SYSTEM)
30 1
VBack door/trunk out-
put Output —Back door open (switch
closed) 0V
Back door closed (switch
open) 5V
30 3
VBack door opener
switch Input —All doors locked (SW OFF) Battery voltage
All doors unlocked (SW ON) 0V
30 4
VTrunk lid opener
switch Input —All doors locked (SW OFF) Battery voltage
All doors unlocked (SW ON) 0V
32 LG Combination switch
output 5 Output ONLighting, turn, wiper OFF
Wiper dial position 4
33 Y Combination switch
output 4 Output ON
Lighting, turn, wiper OFF
Wiper dial position 4
34 V Combination switch
output 3 Output ONLighting, turn, wiper OFF
Wiper dial position 4
35 R Combination switch
output 2
Output ONLighting, turn, wiper OFF
Wiper dial position 4
36 P Combination switch
output 1
37 1
GKey switch and igni-
tion knob switch Input OFFIntelligent Key inserted Battery voltage
Intelligent Key removed 0V
37 2
GKey switch and key
lock solenoid Input OFFKey inserted Battery voltage
Key removed 0V
38 W Ignition switch (ON) Input ON — Battery voltage
39 L CAN-H — — — —
40 P CAN-L — — — —
41 6
WTrunk key cylinder
switch Input —ON (Full unlock position) 0V
OFF (Neutral position) 5V
42 6
Y Trunk lamp switch Input OFF ON (trunk open) 0V
OFF (trunk closed) Battery voltage
Terminal
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E

ECM Re-communicating Function " .
NOTE:
• When any initialization is performed, all ID previ ously registered will be erased and all NATS mechanical
keys must be registered again.
• The engine cannot be started with an unregistered key. In this case, the system will show “DIFFERENCE OF
KEY” or “LOCK MODE” as a self-diagnos tic result on the CONSULT-III screen.
• In rare case, “CHAIN OF ECM-IMMU” might be stored as a self-diagnostic result during key registration pro-
cedure, even if the system is not malfunctioning.
NATS SELF-DIAGNOSTIC RESULTS ITEM CHART 65
7
SBAll door lock actuators
(lock) Output OFFOFF (neutral) 0V
ON (lock) Battery voltage
66 7
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 8
LPower window power
supply (RAP) Output —Ignition switch ON Battery voltage
Within 45 seconds after igni-
tion switch OFF Battery voltage
More than 45 seconds after ig-
nition switch OFF 0V
When front door LH or RH is
open or power window timer
operates 0V
69 8
P Battery power supply
OutputOFF
— Battery voltage
70 Y Battery power supply Input OFF — Battery voltage
Terminal
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition CONSULT-III DIAGNOSTIC TEST
MODE Description
C/U INITIALIZATION When replacing any of the following components, C/U initialization and re-registration of all
NATS mechanical keys are necessary.
[NATS mechanical key/ BCM/ ECM*]
SELF-DIAG RESULTS Detected items (screen terms) are as shown in the chart.
Refer to "NATS SELF-DIAGNOSTIC RESULTS ITEM CHART" .

BL
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Trouble Diagnosis Procedure
INFOID:0000000004305142
PRELIMINARY CHECK Intelligent Key Battery Replacement " .
The engine cannot be started by all Intelligent Keys >> GO TO 3
The engine can be started by all Intelligent Keys >> GO TO 4 Trouble Diagnosis Symptom Chart " .
KEY warning lamp illuminates red >> Refer to BL-119, " Trouble Diagnosis Symptom Chart " .
Does not illuminate >> Refer to BL-119, " Trouble Diagnosis Symptom Chart " .DIFFERENCE OF KEY
[P1615] NATS MAL-
FUNCTION
P1615 BCM can receive the key ID signal but the result of ID ver-
ification between key ID and BCM is NG. BL-266CHAIN OF IMMU-KEY
[P1614] NATS MAL-
FUNCTION
P1614 BCM cannot receive the key ID signal.
BL-262ID DISCORD, IMM-ECM
[P1611] NATS MAL-
FUNCTION
P1611 The result of ID verification between BCM and ECM is NG.
System initialization is required. BL-263LOCK MODE
[P1610] NATS MAL-
FUNCTION
P1610 When the starting operation is carried out five or more
times consecutively under the following conditions, NATS
will shift the mode to one which prevents the engine from
being started.
• Unregistered mechanical key is used.
• BCM or ECM’s malfunctioning. BL-265DON'T ERASE BEFORE CHECK-
ING ENG DIAG —All engine trouble codes except NATS trouble code has
been detected in ECM. BL-257

CAN Com-
munication Inspection Using CONSULT-III (Self-Diagnosis) " .
SYMPTOM
Displayed “SELF-DIAG
RESULTS” on CON- SULT-III screen. DIAGNOSTIC PROCE-
DURE
(Reference page) SYSTEM
(Malfunctioning part or mode)
• Security indicator lighting up*
• Engine cannot be started CHAIN OF ECM-IMMU
[P1612] PROCEDURE 1
(BL-260 )
In rare case, “CHAIN OF ECM-IMMU” might be stored
during key registration procedure, even if the system is
not malfunctioning.
Open circuit in battery voltage line of BCM circuit
Open circuit in ignition line of BCM circuit
Open circuit in ground line of BCM circuit
Open or short circuit between BCM and ECM commu-
nication line
ECM
BCM
DIFFERENCE OF KEY [P1615] PROCEDURE 6
(BL-266 )
Unregistered ignition key is used.
BCM is malfunctioning.
CHAIN OF IMMU-KEY [P1614] PROCEDURE 2
(BL-262 )
Malfunction of key ID chip
Communication line between ANT/ AMP and BCM:
Open circuit or short circuit of battery voltage line or
ground line
Open circuit in power source line of ANT/ AMP circuit
Open circuit in ground line of ANT/ AMP circuit
NATS antenna amp.
BCM
ID DISCORD, IMM- ECM
[P1611] PROCEDURE 3
(BL-263 )
System initialization has not yet been completed.
ECM
LOCK MODE [P1610] PROCEDURE 5
(BL-265 )
When the starting operation is carried out five or more
times consecutively under the following conditions,
NATS will shift the mode to one which prevents the en-
gine from being started.
• Unregistered ignition key is used.
• BCM or ECM’s malfunctioning.
Security indicator
lighting up* DON'T ERASE BE-
FORE CHECKING ENG DIAG WORK FLOW
(BL-257 )
Engine trouble data and NATS trouble data have been
detected in ECM SYMPTOM
DIAGNOSTIC PROCEDURE
(Reference page) SYSTEM
(Malfunctioning part or mode)
Security indicator does not light up*. PROCEDURE 4
(BL-264 )
Security indictor.
Open circuit between Fuse and BCM
BCM

CO
NP
O
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" INFOID:0000000004784387
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty 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 w hether 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 inoper ative, 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 in correct removal and installation of the SRS can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wh eel Rotation After Battery Disconnect
INFOID:0000000004784348
NOTE:
• This Procedure is applied only to models with Inte lligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecti ng both battery cables with the ignition knob 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 NATS , an electrically controlled steering lock mech-
anism 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 pow er 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 al l control units using CONSULT-III.

CVT
N
O P
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" INFOID:0000000004800719
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty 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 w hether 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 inoper ative, 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 in correct removal and installation of the SRS can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wh eel Rotation After Battery Disconnect
INFOID:0000000004666854
NOTE:
• This Procedure is applied only to models with Intell igent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
• Remove and install all control units after disconnecti ng both battery cables with the ignition knob 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 pow er 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 al l control units using CONSULT-III.

CVT
N
O P
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" INFOID:0000000004800720
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty 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 w hether 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 inoper ative, 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 in correct removal and installation of the SRS can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wh eel Rotation After Battery Disconnect
INFOID:0000000004305562
NOTE:
• This Procedure is applied only to models with Intell igent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
• Remove and install all control units after disconnecti ng both battery cables with the ignition knob 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 pow er 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 al l control units using CONSULT-III.