2011 NISSAN LATIO ignition

BL-242
< SERVICE INFORMATION >
VEHICLE SECURITY (THEFT WARNING) SYSTEM
2.CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door switch and BCM.
3. Check continuity between door switch connector B8 (F ront LH) or B108 (Front RH) terminal 2, B6 (Rear
LH) or B116 (Rear RH) terminal 1 and BCM connector M18, M19 terminals 12, 13, 47 and 48.
4. Check continuity between door switch connector B8 (Front LH) or B108 (Front RH) terminal 2, B6 (Rear LH) or B116 (Rear RH)
terminal 1 and ground.
OK or NG
OK >> GO TO 3
NG >> Repair or replace harness.
3.CHECK DOOR SWITCHES
Check continuity between door switch terminal and switch case ground.
OK or NG
OK >> Check door switch case ground condition.
NG >> Replace door switch.
Diagnosis Procedure 8INFOID:0000000005929429
TRUNK LAMP SWITCH CHECK (SEDAN)
1.CHECK TRUNK LAMP SWITCH AND TRUNK RELEASE SOLENOID INPUT SIGNAL
With CONSULT-III
Check (“TRNK OPN MNTR”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
1. Turn ignition switch OFF.
2. Check voltage between BCM harness connector M19 terminal 42 and ground. 2 - 47
: Continuity should exist.
2 - 12 : Continuity should exist.
1 - 48 : Continuity should exist.
1 - 13 : Continuity should exist.
2 - Ground : Continuity should not exist.
1 - Ground : Continuity should not exist.
LIIA1350E
Component Terminals Condition of
switch Continuity
Front door switch LH/RH 2 – Case ground Pushed
No
Released Yes
Rear door switch LH/RH 1 – Case ground Pushed
No
Released Yes
LIIA0550E
Monitor item Trunk condition
TRNK OPN MNTR OPEN
: ON
CLOSED : OFF
Revision: May 2010 2011 Versa

VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-243
< SERVICE INFORMATION >
C
DE
F
G H
J
K L
M A
B
BL
N
O P
OK or NG
OK >> Trunk lamp switch and trunk release solenoid circuit is OK.
NG >> GO TO 2
2.CHECK TRUNK LAMP SWITCH A ND TRUNK RELEASE SOLENOID
1. Turn ignition switch OFF.
2. Disconnect trunk lamp switch and trunk release solenoid connector.
3. Check continuity between trunk lamp switch and trunk release solenoid terminals 1 and 3.
OK or NG
OK >> GO TO 3
NG >> Replace trunk lamp switch and trunk release solenoid.
3.CHECK TRUNK LAMP SWITCH AND T RUNK RELEASE SOLENOID CIRCUIT
1. Disconnect BCM connector M19.
2. Check continuity between BCM harness connector M19 (A) ter- minal 42 and trunk room lamp switch harness connector B127
(B) terminal 3.
3. Check continuity between BCM harness connector M19 (A) terminal 42 and ground.
OK or NG
OK >> GO TO 4
NG >> Repair or replace harness between BCM and trunk room lamp switch.
4.CHECK TRUNK LAMP SWITCH AND TRUNK RELEASE SOLENOID GROUND CIRCUIT
Connector Te r m i n a l s
Trunk condition Voltage (V)
(Approx.)
(+) (-)
M19 42 Ground CLOSED
Battery voltage
OPEN 0
WIIA1179E
Terminals Trunk condition Continuity
13 CLOSED
No
OPEN Yes
WIIA1421E
42 – 3: Continuity should exist.
WIIA1422E
42 – Ground : Continuity should not exist.
Revision: May 2010 2011 Versa

BL-244
< SERVICE INFORMATION >
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Check continuity between trunk room lamp switch harness connec-
tor B127 terminal 1 and ground.
OK or NG
OK >> Check connection of harness and connector.
NG >> Repair or replace trunk lamp switch and trunk release solenoid ground circuit.
Diagnosis Procedure 9INFOID:0000000005929430
TRUNK KEY CYLINDER SWITCH CHECK (SEDAN)
1.CHECK TRUNK KEY CYLINDER SWITCH
With CONSULT-III
Check trunk key cylinder switch ("TRUNK CYL SW") in DATA MONITOR mode in CONSULT–III. Refer to BL-
41, "CONSULT-III Function (BCM)".
• When key inserted in trunk key cylinder is turned to FULL STROKE:
• When key is removed from the trunk key cylinder:
Without CONSULT-III
Check voltage between BCM connector M19 terminal 41 and
ground.
OK or NG
OK >> Trunk key cylinder switch signal is OK.
NG >> GO TO 2
2.CHECK TRUNK KEY CYLINDE R SWITCH GROUND HARNESS
1. Turn ignition switch OFF.
2. Disconnect trunk key cylinder switch. 1 – Ground : Continuity should exist.
WIIA1423E
TRUNK CYL SW : ON
TRUNK CYL SW : OFF
Connector
Te r m i n a l s
ConditionVoltage (V)
(Approx.)
( + ) ( – )
M19 41Ground Neutral (N)
5
Full stroke (open) 0
WIIA1425E
Revision: May 2010 2011 Versa

BL-246
< SERVICE INFORMATION >
NATS (NISSAN ANTI-THEFT SYSTEM)
NATS (NISSAN ANTI-THEFT SYSTEM)
Component Parts and Harness Connector LocationINFOID:0000000005929431
System DescriptionINFOID:0000000005929432
DESCRIPTION
NOTE:
If customer reports a “No start” condition, request ALL KEYS to be brought to a Nissan dealer in case
of a NATS malfunction.
NATS (Nissan Anti-Theft System) has the following functions:
• NATS shows a higher anti-theft performance at preventing engine to be started by an unregistered key. (reg- istered key: mechanical key and Intelligent Key).
• Only a key with key ID registered in BCM and ECM c an start engine, it has a higher protection against auto
theft that duplicates keys.
• If a malfunction has been detected, security indicator will illuminate when ignition switch is in ON position.
• If the owner requires, mechanical key can be registered for up to 5 keys.
• During trouble diagnosis or when the following parts have been replaced, and if mechanical key is added,
registration* is required.
*: All mechanical keys of the vehicle should be registered.
-ECM
LIIA2920E
1. BCM M18, M20
(view with glove box removed) 2. Intelligent Key unit M52
(if equipped) 3. NATS antenna amp. M21
(inside steering column)
4. Combination meter M24 5. Security indicator lamp6. ECM E16
Revision: May 2010 2011 Versa

NATS (NISSAN ANTI-THEFT SYSTEM)BL-247
< SERVICE INFORMATION >
C
DE
F
G H
J
K L
M A
B
BL
N
O P
-BCM
- Mechanical key
• NATS trouble diagnoses, system initialization and additional registration of other NATS mechanical key IDs
must be carried out using CONSULT-III hardware and CONSULT-III NATS software. When NATS initializa-
tion has been completed, the ID of the inserted mechanical key can be displayed.
Regarding the procedures of NATS initialization and mechanical key ID registration, refer to CONSULT-III
operation manual NATS.
SECURITY INDICATOR
• Forewarns that the vehicle is equipped with NATS.
• Security indicator will not blink while the ignition knob is in ON or START state. NOTE:
Because security indicator is highly efficient, the battery is barely affected.
Condition of Secu rity Indicator
• When operating the ignition switch with Intelligent Key, security indicator lamp will turn off at once if ignition
switch is pressed and blinks when ignition switch is released.
• When operating the ignition switch with mechanical key security indicator will turn off at once if mechanical key is inserted into key cylinder and blinks when mechanical key is removed.
(Once the mechanical key is inserted into key cylinder, BCM will only perform the key ID verification with
mechanical key)
System CompositionINFOID:0000000005929433
The function of the NATS consists of the following:
• Mechanical key
• NATS antenna amp. located in the ignition key cylinder
•BCM
• ECM (Engine control module)
• Security indicator
• Intelligent Key unit (if equipped)
NOTE:
The communication between ECM, BCM and/or Intelligent K ey unit uses the CAN communication sys-
tem.
ECM Re-communicating FunctionINFOID:0000000005929434
Performing the following procedure can automatically perform re-communication of ECM and BCM or Intelli-
gent Key unit, but only when the ECM has been replaced with a new one which has never been energized on-
board.
(In this step, initialization procedur e by CONSULT-III is not necessary)
NOTE:
• When registering new Key IDs or replacing the ECM other than brand new, refer to CONSULT-III
Operation Manual NATS.
LIIA2637E
Revision: May 2010 2011 Versa

BL-248
< SERVICE INFORMATION >
NATS (NISSAN ANTI-THEFT SYSTEM)
•If multiple keys are attached to the key holder, separate them before work.
• Distinguish keys with unregistered key ID from those with registered ID.
1. Install ECM.
2. Use a registered key (*), turn ignition switch to “ON”. *: To perform this step, use the key that has been used before to perform ECM replacement.
3. Maintain ignition switch in “ON” position for at least 5 seconds.
4. Turn ignition switch to “OFF”.
5. Start engine. If engine can be started, procedure is completed.
If engine cannot be started, refer to CONSULT-III Operation Manual NATS and initialize control unit.
Revision: May 2010 2011 Versa

BL-250
< SERVICE INFORMATION >
NATS (NISSAN ANTI-THEFT SYSTEM)
Terminal and Reference Value for BCM
INFOID:0000000006215781
Te r m i n a l Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
2BR Combination switch
input 5
Input ONLighting, turn, wiper OFF
Wiper dial position 4
3GR Combination switch
input 4 Input ONLighting, turn, wiper OFF
Wiper dial position 4
4L Combination switch
input 3
Input ONLighting, turn, wiper OFF
Wiper dial position 4
5G Combination switch
input 2
Input ONLighting, turn, wiper OFF
Wiper dial position 4
6V Combination switch
input 1
7
7BR Front door key cylin-
der switch LH (unlock) Input
OFFON (open, 2nd turn)
Momentary 1.5V
OFF (closed) 0V
8
7Y Front door key cylin-
der switch LH (lock) InputOn (open)
Momentary 1.5V
OFF (closed) 0V
9W Rear window defogger
switch Input ONRear window defogger switch
ON
0V
Rear window defogger switch
OFF 5V
10 R Defrost A/C switch sig-
nal
Input ONA/C switch OFF
5V
A/C switch ON 0V
11 L Ignition switch (ACC
or ON) InputACC or
ON Ignition switch ACC or ON
Battery voltage
12 SB Front door switch RH Input OFF ON (open)
0V
OFF (closed) Battery voltage
13 GR Rear door switch RH Input OFF ON (open)
0V
OFF (closed) Battery voltage
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
Revision: May 2010 2011 Versa

NATS (NISSAN ANTI-THEFT SYSTEM)BL-251
< SERVICE INFORMATION >
C
DE
F
G H
J
K L
M A
B
BL
N
O P
15 W Tire pressure warning
check connector
Input OFF
—5V
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 OFF
Goes 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 OFFON
0V
OFF 5V
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
LIIA1893E
LIIA1894E
LIIA1895E
ZJIA0719J
Revision: May 2010
2011 Versa