Content .. 100 101 102 103 ..

Nissan Pathfinder (2005 year). Manual - part 102

NVIS(NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

BL-103

2005 Pathfinder

Terminals and Reference Value for BCM

EIS0040J

CONSULT-II

EIS0040K

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.

Turn ignition switch OFF.

Insert NVIS (NATS) program card into CONSULT-II.

Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector.

Turn ignition switch ON.

Touch “START”.

Terminal

Wire

Color

Item

Condition

Voltage (V)

(Approx.)

NATS antenna amp.

Ignition switch (OFF

→

ON)

Just after turning ignition switch
ON: Pointer of tester should move.

Security indicator lamp

Goes OFF

→

illuminates (Every 2.4

seconds)

Battery voltage

→

NATS antenna amp.

Ignition switch (OFF

→

ON)

Just after turning ignition switch
ON: Pointer of tester should move.

W/R

Ignition switch (ON or START)

Ignition switch (ON or START posi-
tion)

Battery voltage

CAN-H

—

CAN-L

—

R/Y

Power source (BAT)

—

Battery voltage

Ground

—

Power source (BAT)

—

Battery voltage

Program card

: NATS (AEN02C-1)

BBIA0538E

PBR455D

BL-104

NVIS(NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

2005 Pathfinder

Touch "OTHER"

Select “NATS V.5.0”.
If “NATS V5.0” is not indicated, go to

GI-38, "CONSULT-II Data

Link Connector (DLC) Circuit"

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.

LIIA0556E

SEL027X

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-105, "NVIS (NATS) SELF-DIAGNOSTIC RESULTS ITEM CHART"

NVIS(NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

BL-105

2005 Pathfinder

HOW TO READ SELF-DIAGNOSTIC RESULTS

NVIS (NATS) SELF-DIAGNOSTIC RESULTS ITEM CHART

PIIA1124E

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

BL-109

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

BL-110

CHAIN OF IMMU-KEY
[P1614]

NATS MAL-
FUNCTION
P1614

BCM cannot receive the key ID signal.

Refer to

BL-113

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

BL-111

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

BL-112

DON'T ERASE BEFORE CHECK-
ING ENG DIAG

—

All engine trouble codes except NVIS (NATS) trouble
code has been detected in ECM.

Refer to

BL-106

BL-106

NVIS(NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

2005 Pathfinder

Work Flow

EIS0040L

LIIA1152E

NVIS(NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

BL-107

2005 Pathfinder

Trouble Diagnoses

EIS0040M

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

(

BL-109

)

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

Open circuit in ignition
line of BCM circuit

Open circuit in ground
line of BCM circuit

Open or short circuit
between BCM and ECM
communication line

ECM

BCM

DIFFERENCE OF KEY

[P1615]

PROCEDURE 2

(

BL-110

)

Unregistered key

BCM

CHAIN OF IMMU-KEY

[P1614]

PROCEDURE 5

(

BL-113

)

Malfunction of key ID
chip

Communication line
between ANT/ AMP and
BCM:
Open circuit or short cir-
cuit 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-111

)

System initialization has
not yet been completed.

ECM

LOCK MODE

[P1610]

PROCEDURE 4

(

BL-112

)

LOCK MODE

Security indicator light-
ing up*

DON'T ERASE

BEFORE CHECKING

ENG DIAG

WORK FLOW

(

BL-106

)

Engine trouble data and
NVIS (NATS) trouble
data have been detected
in ECM

—

BL-108

NVIS(NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

2005 Pathfinder

SYMPTOM MATRIX CHART 2

Non self-diagnosis related item

*: CONSULT-II self-diagnostic results display screen “no malfunction is detected”.

DIAGNOSTIC SYSTEM DIAGRAM

Symptom

Diagnostic Procedure

(Reference page)

System

(Malfunctioning part or mode)

Reference Part No. Of Illustra-

tion On System Diagram

Security indicator does not light
up*.

PROCEDURE 6

(

BL-116

)

Combination meter (security
indictor lamp)

—

Open circuit between Fuse and
BCM

—

BCM

WIIA0550E

NVIS(NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

BL-109

2005 Pathfinder

Diagnostic Procedure 1

EIS0040N

Self-diagnostic results:
“CHAIN OF ECM-IMMU” displayed on CONSULT-II screen
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-II, then perform the trouble diagno-
sis of malfunction system indicated “SELF-DIAG RESULTS” of “BCM”. Refer to

BL-103, "CONSULT-II"

CONFIRM SELF-DIAGNOSTIC RESULTS

Confirm SELF-DIAGNOSTIC RESULTS “CHAIN OF ECM-IMMU”
displayed on CONSULT-II screen.

NOTE:
In rare case, “CHAIN OF ECM-IMMU” might be stored during key
registration procedure, even if the system is not malfunctioning.
Is CONSULT-II screen displayed as above?

Yes

>> GO TO 2.

>> GO TO

BL-107, "SYMPTOM MATRIX CHART 1"

CHECK POWER SUPPLY CIRCUIT FOR BCM

Turn ignition switch OFF.

Check voltage between BCM connector M20 terminal 70 and ground.

OK or NG

>> GO TO 3.

>> Check the following.

●

50A fusible link (letter g , located in fuse and fusible
link box)

●

Harness for open or short between fuse and BCM
connector
Ref. Part No. C1

CHECK IGN SW. ON SIGNAL

Turn ignition switch ON.

Check voltage between BCM connector M18 terminal 38 and ground.

OK or NG

>> GO TO 4.

>> Check the following.

●

10A fuse [No. 1, located in the fuse block (J/B)]

●

Harness for open or short between fuse and BCM
connector
Ref. part No. C2

PIIA1260E

70 - Ground

: Battery voltage

LIIA1279E

38 - Ground

: Battery voltage

LIIA0527E

BL-110

NVIS(NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

2005 Pathfinder

CHECK GROUND CIRCUIT FOR BCM

Turn ignition OFF.

Disconnect BCM.

Check continuity between BCM connector M18 terminal 67 and ground.

OK or NG

>> GO TO 5.

>> Repair or replace harness. Ref. part No. C3

REPLACE BCM

Replace BCM. Ref. part No. A

Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II Operation Manual NATS-IVIS/NVIS”.

Does the engine start?

Yes

>> BCM is malfunctioning.

>> ECM is malfunctioning.

●

Replace ECM. Ref. part No. B

●

Perform initialization or re-communicating function.

●

For initialization, refer to “CONSULT-II Operation Manual NATS-IVIS/NVIS”.

●

For re-communicating function, refer to

BL-101, "ECM Re-communicating Function"

Diagnostic Procedure 2

EIS0040O

Self-diagnostic results:
“DIFFERENCE OF KEY” displayed on CONSULT-II screen

CONFIRM SELF-DIAGNOSTIC RESULTS

Confirm SELF-DIAGNOSTIC RESULTS “DIFFERENCE OF KEY”
displayed on CONSULT-II screen.

Is CONSULT-II screen displayed as above?

Yes

>> GO TO 2.

>> GO TO

BL-107, "SYMPTOM MATRIX CHART 1"

67 - Ground

:Continuity should exist.

LIIA1040E

PIIA1261E

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