2008 NISSAN LATIO key battery

BACK DOOR LOCK
BL-165
< SERVICE INFORMATION >
C
D
E
F
G
H
J
K
L
MA
B
BL
N
O
P
OK or NG
OK >> Check the condition of harness and connector.
NG >> Replace BCM. Refer to BCS-18, "
Removal and Installa-
tion of BCM".
Check Back Door Opener Switch Circuit (With Intelligent Key)INFOID:0000000001704062
1.CHECK BACK DOOR OPENER SWITCH SIGNAL
With CONSULT-III
Check back door opener switch (“I-KEY TRNK”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
Check voltage between Intelligent Key unit connector M52 terminal
24 and ground.
OK or NG
OK >> Back door opener switch is OK.
NG >> GO TO 2.
2.CHECK BACK DOOR OPENER SWITCH CIRCUIT 1
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit and back door opener switch connector.
3. Check continuity between Intelligent Key unit connector (A) M52 terminal 24 and back door opener switch
connector (B) terminal 1.
4. Check continuity between Intelligent Key unit connector (A) M52
terminal 24 and ground.
Te r m i n a l s
Voltage (V)
(Approx.) (+)
(–)
BCM connector Terminal
M18 30 Ground Battery voltage
PIIB6468E
Test item Condition
I-KEY TRNKBack door opener switch is pushed: ON (momentarily)
Back door opener switch is released: OFF
Te r m i n a l s
Door conditionVoltage (V)
(Approx.) (+)
(–) Intelligent
Key unit
connectorTe r m i n a l
M52 24 GroundBack door
opener switchPushed 0
Released 5
WIIA1279E
AB
Continuity
Intelligent Key unit
connectorTe r m i n a lBack door opener
switch connectorTe r m i n a l
M52 24 D408 1 Yes
A
GroundContinuity
Intelligent Key unit connector Terminal
M52 24 No
WIIA1280E

TRUNK LID OPENER
BL-177
< SERVICE INFORMATION >
C
D
E
F
G
H
J
K
L
MA
B
BL
N
O
P
BCM Power Supply and Ground CircuitINFOID:0000000001704077
Refer to BCS-15, "BCM Power Supply and Ground Circuit Inspection".
Check Trunk Lid Opener Switch Circuit (Without Intelligent Key or Power Windows)
INFOID:0000000001704078
1.CHECK TRUNK LID OPENER SWITCH SIGNAL 1
With CONSULT-III
1. Insure front door lock knob LH is turned to the UNLOCK position.
2. Check trunk lid opener switch (“TRNK OPNR SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
1. Insure front door lock knob LH is turned to the UNLOCK position.
2. Check voltage between BCM connector M18 terminal 30 and ground.
OK or NG
OK >> Trunk lid opener switch is OK.
NG >> GO TO 2.
2.CHECK TRUNK LID OPENER SWITCH CIRCUIT 1
1. Turn ignition switch OFF.
2. Disconnect BCM and trunk lid opener switch connector.
3. Check continuity between BCM connector (A) M18 terminal 30 and trunk lid opener switch connector
B128 (B) terminal 1.
Trunk lid opener does not operate.
(Without Intelligent Key, with power windows)1. Check BCM power supply and ground circuit.BCS-152. Check trunk lid opener switch circuit.BL-179
3. Check trunk lid lock assembly (actuator) circuit.BL-183
4. Replace BCM.BCS-18
Trunk lid opener does not operate.
(With Intelligent Key)1. Check BCM power supply and ground circuit.BCS-15
2.Check Intelligent Key power supply and ground cir-
cuit.BL-110
3. Check trunk lid opener switch circuit.BL-182
4. Check trunk lid lock assembly (actuator) circuit.BL-183
5. Replace BCM.BCS-18
Symptom Diagnoses/service procedureReference
page
Test item Condition
TRNK OPNR SWTrunk lid opener switch is pushed: ON
Trunk lid opener switch is released: OFF
Te r m i n a l s
Door conditionVoltage (V)
(Approx.) (+)
(–)
BCM
connectorTe r m i n a l
M18 30 GroundTrunk lid open-
er switchPushed 0
Released Battery voltage
PIIB6468E

TRUNK LID OPENER
BL-179
< SERVICE INFORMATION >
C
D
E
F
G
H
J
K
L
MA
B
BL
N
O
P
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness.
6.CHECK UNLOCK SENSOR FUNCTION
1. Connect front door lock actuator LH (door unlock sensor) connector.
2. Check continuity between trunk lid opener switch connector B128 terminal 2 and ground.
OK or NG
OK >> GO TO 7.
NG >> Replace front door lock actuator LH (door unlock sen-
sor). Refer to BL-150
.
7.CHECK TRUNK LID OPENER SWITCH SIGNAL 2
1. Connect BCM connector.
2. Check voltage between BCM connector M18 terminal 30 and ground.
OK or NG
OK >> Check the condition of harness and connector.
NG >> Replace BCM. Refer to BCS-18, "
Removal and Installa-
tion of BCM".
Check Trunk Lid Opener Switch Circuit (Without Intelligent Key, with Power Windows)
INFOID:0000000001704079
1.CHECK TRUNK LID OPENER SWITCH SIGNAL 1
With CONSULT-III
1. Insure front door lock knob RH is turned to the UNLOCK position.
2. Check trunk lid opener switch (“TRNK OPNR SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
1. Insure front door lock knob RH is turned to the UNLOCK position.
2. Check voltage between BCM connector M18 terminal 30 and ground.
Front door lock actuator
LH (door unlock sensor) connec-
torTe r m i n a l
GroundContinuity
D3 5 Yes
PIIB6423E
Trunk lid opener
switch connec-
torTe r m i n a lFront door lock
knob LH positionContinuity
B128 2 GroundUnlock Yes
Lock No
PIIB6472E
Te r m i n a l s
Voltage (V)
(Approx.) (+)
(–)
BCM connector Terminal
M18 30 Ground Battery voltage
PIIB6468E
Test item Condition
TRNK OPNR SWTrunk lid opener switch is pushed: ON
Trunk lid opener switch is released: OFF

BL-182
< SERVICE INFORMATION >
TRUNK LID OPENER
OK or NG
OK >> Check the condition of harness and connector.
NG >> Replace BCM. Refer to BCS-18, "
Removal and Installa-
tion of BCM".
Check Trunk Lid Opener Switch Circuit (With Intelligent Key)INFOID:0000000001704080
1.CHECK TRUNK LID OPENER SWITCH SIGNAL
With CONSULT-III
Check trunk lid opener switch (“I-KEY TRNK”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
Check voltage between Intelligent Key unit connector M52 terminal
24 and ground.
OK or NG
OK >> Trunk lid opener switch is OK.
NG >> GO TO 2.
2.CHECK TRUNK LID OPENER SWITCH CIRCUIT 1
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit and trunk lid opener switch connector.
3. Check continuity between Intelligent Key unit connector (A) M52 terminal 24 and trunk lid opener switch
connector B128 (B) terminal 1.
4. Check continuity between Intelligent Key unit connector (A) M52
terminal 24 and ground.
Te r m i n a l s
Voltage (V)
(Approx.) (+)
(–)
BCM connector Terminal
M18 30 Ground Battery voltage
PIIB6468E
Test item Condition
I-KEY TRNKTrunk lid opener switch is pushed: ON (momentarily)
Trunk lid opener switch is released: OFF
Te r m i n a l s
Door conditionVoltage (V)
(Approx.) (+)
(–) Intelligent
Key unit
connectorTe r m i n a l
M52 24 GroundTrunk lid open-
er switchPushed 0
Released 5
WIIA1279E
AB
Continuity
Intelligent Key unit
connectorTe r m i n a lTrunk lid opener
switch connectorTe r m i n a l
M52 24 B128 1 Yes
A
GroundContinuity
Intelligent Key unit connector Terminal
M52 24 No
WIIA1280E

VEHICLE SECURITY (THEFT WARNING) SYSTEM
BL-201
< SERVICE INFORMATION >
C
D
E
F
G
H
J
K
L
MA
B
BL
N
O
P
OK or NG
OK1 >> Door switch circuit is OK (without Intelligent Key).
OK2 >> GO TO 6 (with Intelligent Key).
NG >> GO TO 2.
2.CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door switch and BCM.
3. Check continuity between door switch connector (B) B8 (front LH), B108 (front RH) terminal 2 or (C) B6
(rear LH), B116 (rear RH) terminal 1 or back door lock assembly connector (D) D405 terminal 3 and BCM
connectors (A) M18, M19 terminals 12, 13, 43, 47 and 48.
4. Check continuity between door switch connector (B) B8 (front
LH), B108 (front RH) terminal 2 or (C) B6 (rear LH), B116 (rear
RH) terminal 1 or back door lock assembly connector (D) D405
terminal 3 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK DOOR SWITCHES
FRONT AND REAR DOORS
Check continuity between front door switch terminal 2 or rear door
switch terminal 1 and exposed metal of switch while pressing and
releasing switch.
M18Front door
switch RH12
GroundOpen
↓
Closed0
↓
Battery voltage Rear door
switch RH13
M19Back door
switch43
Front door
switch LH47
Rear door
switch LH48
1 - 13 : Continuity should exist.
1 - 48 : Continuity should exist.
2 - 12 : Continuity should exist.
2 - 47 : Continuity should exist.
3 - 43 : Continuity should exist.
1 - Ground : Continuity should not exist.
2 - Ground : Continuity should not exist.
3 - Ground : Continuity should not exist.
WIIA1244E
Door switch is released : Continuity should exist.
Door switch is pushed : Continuity should not exist.
PIIB6899E

NATS (NISSAN ANTI-THEFT SYSTEM)
BL-211
< SERVICE INFORMATION >
C
D
E
F
G
H
J
K
L
MA
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 Security 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:0000000001704105
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 Key unit uses the CAN communication sys-
tem.
ECM Re-communicating FunctionINFOID:0000000001704106
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 procedure 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

NATS (NISSAN ANTI-THEFT SYSTEM)
BL-215
< SERVICE INFORMATION >
C
D
E
F
G
H
J
K
L
MA
B
BL
N
O
P
Trouble Diagnosis ProcedureINFOID:0000000001704110
PRELIMINARY CHECK
1.GET SYMPTOMS
Listen to customer complaints request. (Get symptoms)
NOTE:
If customer reports a “No start” condition, request all Intelligent Keys to be brought to the dealer in case of
Intelligent Key system malfunction.
Intelligent Key or mechanical key service request>> For further information, refer to CONSULT-III operation
manual.
Malfunctions>>GO TO 2.
2.START ENGINE WITH INTELLIGENT KEY (IF EQUIPPED)
Check if the engine could be started by all registered Intelligent Keys.
The engine cannot be started by some Intelligent Keys>>Intelligent Key is low battery or malfunction. Refer
to BL-142, "
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.
3.CHECK “KEY” WARNING LAMP ILLUMINATION
When pushing the ignition switch, check if “KEY” warning lamp in combination meter illuminates.
KEY warning lamp illuminates green>>GO TO BL-103, "
Trouble Diagnosis Symptom Chart" .
KEY warning lamp illuminates red>>GO TO BL-103, "
Trouble Diagnosis Symptom Chart" .
Does not illuminate>>GO TO BL-103, "
Trouble Diagnosis Symptom Chart" .
4.START ENGINE WITH MECHANICAL KEY
Check if the engine could be started by all registered mechanical keys.
The engine can not be started by some mechanical keys>>Register mechanical key. Refer to CONSULT-III
operation manual.
The engine cannot be started by all mechanical keys>> "WORK FLOW" .
The engine can be started by all mechanical keys>>GO TO 5.
5.PERFORM SELF-DIAGNOSIS
1. Turn ignition switch to ON by carrying the Intelligent Key.
2. Perform self-diagnosis of Intelligent Key system with CONSULT-III.
Malfunction is detected>>GO TO BL-101, "
CONSULT-III Application Item" .
No malfunction is detected>>GO TO BL-99, "
Trouble Diagnosis Procedure" .
WORK FLOW
LOCK MODE
[P1610]NATS MAL-
FUNCTION
P1610When 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-223
DON'T ERASE BEFORE CHECK-
ING ENG DIAG—All engine trouble codes except NATS trouble code has
been detected in ECM.BL-215
Detected items
[NATS program card screen terms]P No. Code
(Self-diagnostic
result of “EN-
GINE”)Malfunction is detected when.....Reference
page

BL-218
< SERVICE INFORMATION >
NATS (NISSAN ANTI-THEFT SYSTEM)
Self-diagnosis related item
• *: When NATS detects trouble, the security indicator lights up while ignition key is in the “ON” position.
SYMPTOM MATRIX CHART 2
Non self-diagnosis related item
*: CONSULT-III self-diagnostic results display screen “no malfunction is detected”.
Diagnosis Procedure 1INFOID:0000000001704112
Self-diagnostic results:
“CHAIN OF ECM-IMMU” displayed on CONSULT-III screen
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-III, then perform the trouble diag-
nosis of malfunction system indicated “SELF-DIAG RESULTS” of “BCM”. Refer to BCS-17, "
CAN Com-
munication Inspection Using CONSULT-III (Self-Diagnosis)" .
1.CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “CHAIN OF ECM-IMMU” displayed on CONSULT-III screen.
NOTE:
SYMPTOMDisplayed “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
startedCHAIN OF ECM-IMMU
[P1612]PROCEDURE 1
(BL-218
)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
CHAIN OF IMMU-KEY
[P1614]PROCEDURE 2
(BL-220
)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-221
)System initialization has not yet been completed.
ECM
LOCK MODE
[P1610]PROCEDURE 5
(BL-223
)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 DIAGWORK FLOW
(BL-215
)Engine trouble data and NATS trouble data have been
detected in ECM
SYMPTOMDIAGNOSTIC PROCEDURE
(Reference page)SYSTEM
(Malfunctioning part or mode)
Security indicator does not light up*.PROCEDURE 4
(BL-222
)Security indictor.
Open circuit between Fuse and BCM
BCM