Infiniti G35 (V35). Manual - part 210

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

BL-227

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Trouble Diagnosis Procedure/Without Intelligent Key System

NIS001KV

WORK FLOW

SEL024X

BL-228

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

Trouble Diagnoses

NIS001KW

SYMPTOM MATRIX CHART 1

Self-diagnosis related item

●

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

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*2: With Intelligent Key system

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*3: Without Intelligent Key system

SYMPTOM MATRIX CHART 2

Non self-diagnosis related item

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

SYMPTOM

Displayed “SELF-DIAG 

RESULTS” on CON-

SULT-II screen.

DIAGNOSTIC PROCE-

DURE

(Reference page)

SYSTEM

(Malfunctioning part or mode)

●

Security indicator 
lighting up*

●

Engine cannot be 
started

CHAIN OF ECM-IMMU

[P1612]

PROCEDURE 1

(

BL-229

 )

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 communi-
cation line

ECM

BCM

DIFFERENCE OF KEY

[P1615]

PROCEDURE 2

(

BL-231

 )

Unregistered key

BCM

CHAIN OF IMMU-KEY

[P1614]

PROCEDURE 3

(

BL-231

 )

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 4

(

BL-234

 )

System initialization has not yet been completed.

ECM

●

Security indicator 
lighting up*1

●

Engine cannot be 
started

LOCK MODE

[P1610]

PROCEDURE 6

(

BL-236

 )

When the starting operation is carried out five or more 
times consecutively under the following conditions, IVIS 
(NATS) will shift the mode to one which prevents the 
engine from being started.

●

Unregistered ignition key is used.

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BCM or ECM’s malfunctioning.

Security indicator 
lighting up*1

DON'T ERASE 

BEFORE CHECKING 

ENG DIAG

WORK FLOW

(

BL-226

 *

2

 , 

BL-227

 *

3

 )

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

SYMPTOM

DIAGNOSTIC PROCEDURE

(Reference page)

SYSTEM

(Malfunctioning part or mode)

Security indicator does not light up*.

PROCEDURE 5

(

BL-235

 )

Security indictor.

Open circuit between Fuse and BCM

BCM

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

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Diagnostic Procedure 1

NIS001KX

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 

BCS-15, "CAN Com-

munication Inspection Using CONSULT-II (Self-Diagnosis)"

 .

1. 

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 shown in figure?

Yes

>> GO TO 2.

No

>> GO TO 

BL-228, "SYMPTOM MATRIX CHART 1"

 .

2. 

CHECK POWER SUPPLY CIRCUIT FOR BCM

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check voltage between BCM and ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 3.

NG

>> Check the following.

●

50A fusible link (letter F , located in the fuse and fus-
ible link box)

●

10A fuse [No.18, located in the fuse block (J/B)]

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Harness for open or short between fusible link and BCM

●

Harness for open or short between fuse and BCM

3. 

CHECK IGNITION SWITCH ON SIGNAL

1.

Turn ignition switch ON.

2.

Check voltage between BCM connector M1 terminal 38 and ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 4.

NG

>> Check the following.

●

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

●

Harness for open or short between fuse and BCM

PIIA1260E

Connector

Terminals

(Wire color)

Voltage [V]

(Approx.)

(+)

(-)

M2

42 (GY)

Ground

Battery voltage

55 (W/R)

PIIA6143E

38 (W/L) - Ground

: Battery voltage

PIIA6144E

BL-230

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

4. 

CHECK GROUND CIRCUIT FOR BCM

1.

Turn ignition switch OFF.

2.

Check continuity between BCM connector M2 terminal 52 and ground.

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace harness.

5. 

REPLACE BCM

1.

Replace BCM

2.

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

Does the engine start?

Yes

>> BCM is malfunctioning.

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Replace BCM.

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Perform initialization with CONSULT-II

●

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

No

>> ECM is malfunctioning.

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Replace ECM.

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Perform initialization or re-communicating function

●

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

●

For re-communicating function, refer to 

BL-217, "ECM Re-Communicating Function"

52 (B) – Ground

: Continuity should exist.

PIIA9326E