Nissan Pathfinder (2006 year). Manual — part 100
NVIS(NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)
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System Description
EIS007QA
NVIS (Nissan Vehicle Immobilizer System-NATS) has the following immobilizer functions:
●
Since only NVIS (NATS) ignition keys, whose IDs have been registered into the ECM and BCM, allow the
engine to run, operation of a stolen vehicle without a NVIS (NATS) registered key is prevented by NVIS
(NATS).
NVIS (NATS) will immobilize the engine if someone tries to start it without the registered key of NVIS
(NATS).
●
All of the originally supplied ignition key IDs have been NVIS (NATS) registered.
If requested by the vehicle owner, a maximum of five key IDs can be registered into the NVIS (NATS)
components.
●
The security indicator blinks when the ignition switch is in OFF or ACC position. NVIS (NATS) warns out-
siders that the vehicle is equipped with the anti-theft system.
●
When NVIS (NATS) detects a malfunction, the security indicator lamp lights up while ignition key is in the
ON position.
●
NVIS (NATS) trouble diagnoses, system initialization and additional registration of other NVIS (NATS)
ignition key IDs must be carried out using CONSULT-II hardware and CONSULT-II NVIS (NATS) software.
When NVIS (NATS) initialization has been completed, the ID of the inserted ignition key is automatically
NVIS (NATS) registered. Then, if necessary, additional registration of other NVIS (NATS) ignition key IDs
can be carried out.
Regarding the procedures of NVIS (NATS) initialization and NVIS (NATS) ignition key ID registration, refer
to CONSULT-II Operation Manual NATS-IVIS/NVIS.
●
When servicing a malfunction of the NVIS (NATS) (indicated by lighting up of Security Indicator
Lamp) or registering another NVIS (NATS) ignition key ID, it may be necessary to re-register origi-
nal key identification. Therefore, be sure to receive ALL KEYS from vehicle owner.
System Composition
EIS007QB
The immobilizer function of the NVIS (NATS) consists of the following:
●
NATS ignition key
●
NATS antenna amp. located in the ignition key cylinder
●
Body control module (BCM)
●
Engine control module (ECM)
●
Security indicator
NOTE:
The communication between ECM and BCM uses the CAN communication system.
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ECM Re-communicating Function
EIS007QC
The following procedure can automatically perform re-communication of ECM and BCM, 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-II is not necessary)
NOTE:
●
When registering new key IDs or replacing the ECM other than brand new, refer to CONSULT-II
Operation Manual NATS-IVIS/NVIS.
●
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.
Using a registered key (*1), turn ignition switch to ON.
*1: To perform this step, use the key that has been used before performing 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-II Operation Manual NATS-IVIS/NVIS and initialize control
unit.
NVIS(NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)
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2006 Pathfinder
Wiring Diagram — NATS —
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Terminals and Reference Value for BCM
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BCS-12, "Terminals and Reference Values for BCM"
CONSULT-II
EIS007QF
CONSULT-II INSPECTION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1.
Turn ignition switch OFF.
2.
Insert NVIS (NATS) program card into CONSULT-II.
3.
Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector.
4.
Turn ignition switch ON.
5.
Touch “START”.
6.
Touch "OTHER".
7.
Select “NATS V.5.0”.
If “NATS V5.0” is not indicated, go to
Program card
: NATS (AEN04A-1) or later
BBIA0538E
PBR455D
LIIA0556E
SEL027X
NVIS(NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)
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2006 Pathfinder
8.
Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT-II Operation Manual
NATS-IVIS/NVIS.
CONSULT-II DIAGNOSTIC TEST MODE FUNCTION
NOTE:
●
When any initialization is performed, all IDs previously registered will be erased and all NATS ignition 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-diagnostic result on the CONSULT-II screen.
●
In rare case, “CHAIN OF ECM-IMMU” might be stored as a self-diagnostic result during key registration
procedure, even if the system is not malfunctioning.
HOW TO READ SELF-DIAGNOSTIC RESULTS
SEL150X
CONSULT-II DIAGNOSTIC TEST
MODE
Description
C/U INITIALIZATION
When replacing any of the following components, C/U initialization and re-registration of all
NATS ignition keys are necessary.
(NATS ignition key/ BCM/ ECM)
SELF-DIAG RESULTS
Detected items (screen terms) are as shown in the chart.
Refer to
BL-106, "NVIS (NATS) SELF-DIAGNOSTIC RESULTS ITEM CHART"
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NVIS (NATS) SELF-DIAGNOSTIC RESULTS ITEM CHART
Detected items
[NVIS (NATS) program card screen
terms]
P No. Code
(Self-diagnostic
result of
“ENGINE”)
Malfunction is detected when. .
Reference
page
CHAIN OF ECM-IMMU
[P1612]
NATS MAL-
FUNCTION
P1612
Communication impossible between ECM and BCM
In rare case, “CHAIN OF ECM-IMMU” might be stored
during key registration procedure, even if the system is
not malfunctioning.
Refer to
DIFFERENCE OF KEY
[P1615]
NATS MAL-
FUNCTION
P1615
BCM can receive the key ID signal but the result of ID
verification between key ID and BCM is NG.
Refer to
CHAIN OF IMMU-KEY
[P1614]
NATS MAL-
FUNCTION
P1614
BCM cannot receive the key ID signal.
Refer to
ID DISCORD, IMM-ECM
[P1611]
NATS MAL-
FUNCTION
P1611
The result of ID verification between BCM and ECM is
NG. System initialization is required.
Refer to
LOCK MODE
[P1610]
NATS MAL-
FUNCTION
P1610
When the starting operation is carried out five or more
times consecutively under the following conditions, NVIS
(NATS) will shift the mode to one which prevents the
engine from being started.
●
Unregistered ignition key is used.
●
BCM or ECM malfunctioning.
Refer to
DON'T ERASE BEFORE CHECK-
ING ENG DIAG
—
All engine trouble codes except NVIS (NATS) trouble
code has been detected in ECM.
Refer to
.
NVIS(NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)
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Work Flow
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Trouble Diagnoses
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SYMPTOM MATRIX CHART 1
Self-diagnosis related item
*: When NVIS (NATS) detects trouble, the security indicator lights up while ignition key is in the “ON” position.
Symptom
Displayed “SELF-DIAG
RESULTS” on CON-
SULT-II screen.
Diagnostic Procedure
(Reference page)
System
(Malfunctioning part or
mode)
Reference Part No. Of
Illustration On System
Diagram
●
Security indicator
lighting up*
●
Engine cannot be
started
CHAIN OF ECM-IMMU
[P1612]
PROCEDURE 1
In rare case, “CHAIN OF
ECM-IMMU” might be
stored during key regis-
tration procedure, even if
the system is not mal-
functioning.
—
Open circuit in battery
voltage line of BCM cir-
cuit
C1
Open circuit in ignition
line of BCM circuit
C2
Open circuit in ground
line of BCM circuit
C3
Open or short circuit
between BCM and ECM
communication line
C4
ECM
B
BCM
A
DIFFERENCE OF KEY
[P1615]
PROCEDURE 2
(
Unregistered key
D
BCM
A
CHAIN OF IMMU-KEY
[P1614]
PROCEDURE 5
Malfunction of key ID
chip
E5
Communication line
between ANT/ AMP and
BCM:
Open circuit or short cir-
cuit of battery voltage
line or ground line
E1
E2
Open circuit in power
source line of ANT/ AMP
circuit
E3
Open circuit in ground
line of ANT/ AMP circuit
E4
NATS antenna amp.
E6
BCM
A
ID DISCORD, IMM-ECM
[P1611]
PROCEDURE 3
System initialization has
not yet been completed.
F
ECM
B
LOCK MODE
[P1610]
PROCEDURE 4
LOCK MODE
D
Security indicator light-
ing up*
DON'T ERASE
BEFORE CHECKING
ENG DIAG
WORK FLOW
)
Engine trouble data and
NVIS (NATS) trouble
data have been detected
in ECM
—
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