Infiniti FX35 / FX45. Manual - part 231

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

BL-191

< SERVICE INFORMATION >

C

D

E

F

G

H

J

K

L

M

A

B

BL

N

O

P

Terminal and Reference Value for Steering Lock Unit/with Intelligent Key System

INFOID:0000000001327927

Terminal and Reference Value for Intelligent Key Unit/with Intelligent Key System

INFOID:0000000001327928

Ter-

minal

Wire 

color

Signal Designation

Signal 

Input/

output

Measuring condition

Voltage (V)

(Approx.)

Ignition knob 

position

Operation or conditions

1

L/R

Power source (Fuse)

Input

LOCK

—

Battery voltage

2

R/W

Steering lock unit power 
supply

Input

LOCK

—

5

3

R/B

Steering lock unit com-
munication signal

Input

LOCK

Press ignition knob with Intel-
ligent Key inside vehicle.

Other than the above

5

4

Y/B

Steering lock unit 
ground

—

—

—

0

SIIA1911J

Ter-

minal

Wire 

color

Signal designation

Signal 

Input/

output

Measuring condition

Voltage (V)

(Approx.)

Ignition knob 

position

Operation or conditions

1

R/W

Steering lock unit power 
supply

Output

LOCK

—

5

2

L

CAN-H

Input/

Output

—

—

—

3

P

CAN-L

Input/

Output

—

—

—

6

W

Ignition power supply 
(ON)

Input

ON

Ignition knob ON or START 

position

Battery voltage

7

B/W

Key switch

Input

LOCK

Insert mechanical key into 
ignition key cylinder.

Battery voltage

Remove mechanical key 
from ignition key cylinder.

0

11

L/R

Power source (Fuse)

Input

—

—

Battery voltage

12

B

Ground

—

—

—

0

27

L/W

Ignition knob switch

Input

—

Press ignition knob.

Battery voltage

Return ignition knob to 
LOCK position.

0

31

Y/B

Steering lock unit 
ground

—

—

—

0

BL-192

< SERVICE INFORMATION >

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

Terminal and Reference Value for BCM

INFOID:0000000001327929

*: With Intelligent Key system

CONSULT-III Function

INFOID:0000000001327930

CONSULT-III DIAGNOSTIC TEST MODE FUNCTION

NATS SELF-DIAGNOSTIC RESULT ITEM CHART

32

R/B

Steering lock unit com-
munication signal

Output

LOCK

Press ignition knob with In-
telligent Key inside vehicle.

Other than the above

5

Ter-

minal

Wire 

color

Signal designation

Signal 

Input/

output

Measuring condition

Voltage (V)

(Approx.)

Ignition knob 

position

Operation or conditions

SIIA1911J

Ter-

minal

Wire 

color

Signal designation

Signal 

Input/

output

Measuring condition

Voltage (V)

(Approx.)

Ignition knob 

position

Operation or conditions

21

G/B

NATS antenna amp.

Input/

Output

—

Ignition knob OFF 

→

 ON po-

sition

Tester pointer should move just 
after turning ignition knob “ON” 

23

G/OR

Security indicator lamp

Output

LOCK

Goes OFF 

→

 illuminates (Ev-

ery 2.4 seconds)

Battery voltage 

→

 0

25

BR

NATS antenna amp.

Input/

Output

—

Ignition knob or switch OFF 

→

 ON position

Tester pointer should move just 
after turning ignition knob “ON”

37*

B/W

Key switch

Input

—

Insert mechanical key into ig-
nition key cylinder

Battery voltage

Remove mechanical key 
from ignition key cylinder

0

38

W/L

Ignition power supply 
(ON)

Input

ON

Ignition knob ON or START 
position

Battery voltage

39

L

CAN-H

Input/

Output

—

—

—

40

P

CAN-L

Input/

Output

—

—

—

42

L/R

Power source (Fuse)

Input

—

—

Battery voltage

49

B

Ground

—

—

—

0

52

B

Ground

—

—

—

0

55

G

Power source (Fuse)

Input

—

—

Battery voltage

CONSULT-III DIAGNOSTIC TEST MODE

Description

C/U INITIALIZATION

When replacing any of the following three components, C/U initialization is necessary.
[IVIS (NATS) ignition key/ BCM/ ECM]

SELF- DIAGNOSTIC RESULTS

Detected items (screen terms) are as shown in the chart.

PIN READ

Individual control unit number can be read.
For future information, refer to operation manual NATS-IVIS/NVIS

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

BL-193

< SERVICE INFORMATION >

C

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A

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BL

N

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Detected items (Screen terms)

P No.Code

(Self-diagnostic re-

sult of “ENGINE”)

Description

Diagnostic procedure 

CHAIN OF ECM-IMMU

P1612

Communication impossible between 
ECM and BCM.

Refer to 

BL-195, "Diagnosis 

Procedure 1"

.

DIFFERENCE OF KEY

P1615

BCM can receive the key ID signal but the 
result of ID verification between key ID 
and BCM is NG.

Refer to 

BL-197, "Diagnosis 

Procedure 2"

.

CHAIN OF IMMU-KEY

P1614

BCM cannot receive the key ID signal.

Refer to 

BL-198, "Diagnosis 

Procedure 5"

.

ID DISCORD, IMM-ECM

P1611

The result of ID verification between BCM 
and ECM is NG. System initialization is 
required.

Refer to 

BL-197, "Diagnosis 

Procedure 3"

.

LOCK MODE

P1610

When the starting operation is carried out 
5 or more times consecutively under the 
following conditions, IVIS(NATS) will shift 
the mode to prevent the engine start.
• unregistered ignition key is used (with-

out intelligent key system)

• BCM or ECM malfunctioning

Refer to 

BL-197, "Diagnosis 

Procedure 4"

.

DON'T ERASE BEFORE CHECK-
ING ENG DIAG

—

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

Refer to 

BL-194, "Diagnosis 

Procedure"

.

BL-194

< SERVICE INFORMATION >

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

Diagnosis Procedure

INFOID:0000000001327931

WORK FLOW

MIIB0391E