Infiniti M45 (Y34). Manual — part 239

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

BL-181

C

D

E

F

G

H

J

K

L

M

A

B

BL

HOW TO READ SELF-DIAGNOSTIC RESULTS

NATS SELF-DIAGNOSTIC RESULT ITEM CHART

PIIA1124E

Detected items (Screen terms)

P No.Code

(Self-diagnostic

result of

“ENGINE”)

Description

Diagnostic procedure

ECM INT CIRC-IMMU

P1613

The malfunction of ECM internal circuit
of NATS IMMU communication line is
detected.

Refer to

BL-184, "Diagnostic

Procedure 1"

.

CHAIN OF ECM-IMMU

P1612

Communication impossible between
ECM and NATS IMMU.

Refer to

BL-185, "Diagnostic

Procedure 2"

.

DIFFERENCE OF KEY

P1615

NATS IMMU can receive the key ID sig-
nal but the result of ID verification
between key ID and NATS IMMU is NG.

Refer to

BL-187, "Diagnostic

Procedure 3"

.

CHAIN OF IMMU-KEY

P1614

NATS IMMU cannot receive the key ID
signal.

Refer to

BL-189, "Diagnostic

Procedure 6"

.

ID DISCORD, IMM-ECM

P1611

The result of ID verification between
NATS IMMU and ECM is NG. System ini-
tialization is required.

Refer to

BL-187, "Diagnostic

Procedure 4"

.

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 one which prevents the
engine from being started.

●

unregistered electronic key is used

●

NATS IMMU or ECM malfunctioning

Refer to

BL-188, "Diagnostic

Procedure 5"

.

DON'T ERASE BEFORE
CHECKING ENG DIAG

—

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

Refer to

BL-182, "Work Flow"

.

BL-182

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

Work Flow

AIS002AW

PIIA0379E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

BL-183

C

D

E

F

G

H

J

K

L

M

A

B

BL

Symptom Chart 1

AIS002AX

*: When IVIS (NATS) detects trouble, the security indicator lights up while electronic key is in the “ON” position.

SYMPTOM

Displayed “SELF-DIAG

RESULTS” on CON-

SULT-II screen.

DIAGNOSTIC PROCE-

DURE

SYSTEM (Malfunction-

ing part or mode)

REFERENCE PART

NO. OF ILLUSTRATION

●

Security indicator
lighting up*

●

Engine hard to start

ECM INT CIRC-IMMU

[P1613]

Refer to

BL-184, "Diag-

nostic Procedure 1"

.

ECM

B

CHAIN OF ECM-IMMU

[P1612]

Refer to

BL-185, "Diag-

nostic Procedure 2"

.

Open circuit in battery
voltage line of NATS
IMMU circuit

C1

Open circuit in ignition
line of NATS IMMU cir-
cuit

C2

Open circuit in ground
line of NATS IMMU cir-
cuit

C3

Open or short circuit
between NATS IMMU
and ECM communica-
tion line.

C4

ECM

B

NATS IMMU

A

DIFFERENCE OF KEY

[P1615]

Refer to

BL-187, "Diag-

nostic Procedure 3"

.

Unregistered key

D

NATS IMMU

A

CHAIN OF IMMU-KEY
[P1614]

Refer to

BL-189, "Diag-

nostic Procedure 6"

.

Open or short circuit
between NATS IMMU
and NATS antenna amp.

E1 - E4

Malfunction of key ID
chip

D

NATS IMMU

A

Antenna amp.

E

ID DISCORD, IMM-ECM

[P1611]

Refer to

BL-187, "Diag-

nostic Procedure 4"

System initialization has
not yet been completed.

F

ECM

B

LOCK MODE

[P1610]

Refer to

BL-188, "Diag-

nostic Procedure 5"

.

LOCK MODE

When the starting opera-
tion is carried out 5 or
more times consecu-
tively under the following
conditions, IVIS(NATS)
will shift the mode to one
which prevents the
engine from being
started.

●

unregistered elec-
tronic key is used

●

NATS IMMU or ECM
malfunctioning

●

MIL staying ON

●

Security indicator
lighting up*

DON'T ERASE
BEFORE CHECKING
ENG DIAG

WORK FLOW

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

—

BL-184

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

Symptom Chart 2

AIS002AY

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

Diagnostic System Diagram

AIS002AZ

Diagnostic Procedure 1

AIS002B0

Self-diagnostic results:
“ECM INT CIRC-IMMU” displayed on CONSULT-II screen

1.

CONFIRM SELF-DIAGNOSTIC RESULTS

Confirm SELF-DIAGNOSTIC RESULTS “ECM INT CIRC-IMMU” dis-
played on CONSULT-II screen.

Is CONSULT-II screen displayed as above?

YES

>> 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-174, "ECM

Re-Communicating Function"

.

NO

>> GO TO

BL-183, "Symptom Chart 1"

.

SYMPTOM

SYSTEM

(Malfunctioning part or mode)

Security indicator does not light up*

Security indicator

Open circuit between Fuse and NATS IMMU

Continuation of initialization mode

NATS IMMU

PIIA0378E

SEL314W