Infiniti G35 (V35) Sedan. Manual - part 1165

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

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[INTELLIGENT KEY SYSTEM]

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Component Description

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1.

Key slot M22

2.

Combination meter (Key warning 
lamp) M53 

3.

Front door lock assembly (driver 
side) (door key cylinder switch) D15

4.

Power window main switch D8, D9

5.

Front door switch (driver side) B16

6.

Trunk lid lock assembly (trunk room 
lamp switch) B303

7.

Hood switch E30

8.

TCM F151

9.

A/T device (detention switch) M137

A.

View with front door finisher re-
moved.

B.

View with trunk lid finisher removed. C.

View with hood switch incorporated 
into hood lock (RH).

D.

Inside of A/T (built into A/T).

E.

View with center console assembly 
removed.

JMKIA0145GB

Component Reference

BCM

SEC-85

Steering lock unit

SEC-74

Push-button ignition switch

SEC-86

Door switch

DLK-65

A/T device (detention switch)

SEC-53

Inside key anttena

DLK-58

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< FUNCTION DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

Remote keyless entry receiver

SEC-47

Stop lamp switch

SEC-47

Park/neutral position switch

SEC-61

Clutch switch

SEC-100

Steering lock relay

SEC-65

Starter relay

SEC-68

Starter control relay

SEC-52

Security indicator

SEC-120

Key warning lamp

SEC-119

Component Reference

INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS

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[INTELLIGENT KEY SYSTEM]

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INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS

System Diagram

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System Description

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INPUT/OUTPUT SIGNAL CHART

SYSTEM DESCRIPTION

• The IVIS (NATS) is an anti-theft system by registering an Intelligent Key ID in to the vehicle and prevents the

engine being started by an unregistered Intelligent Key. It has a higher protection against auto thefts that
duplicate mechanical key.

• It performs the ID verification when starting the engine in the same way as the Intelligent Key system. But, it

performs the IVIS (NATS) ID verification when inserting the Intelligent Key and performs the Intelligent Key
ID verification when carrying the Intelligent Key.

• The Intelligent Key system of V36 is not the same as the conventional models. The mechanical key inte-

grated in the Intelligent Key cannot start the engine. When the Intelligent Key battery is discharged, the IVIS
(NATS) ID verification memorized to the transponder integrated with Intelligent Key is performed by inserting
the Intelligent Key into the key slot. If the verification results are OK, the engine start operation can be per-
formed by the push-button ignition switch operation.

• Locate the security indicator and apply the anti-theft system equipment sticker, forewarn that the IVIS

(NATS) is onboard with the model.

• The security indicator always blinks when the Intelligent Key is removed from the key slot and when the

power supply position is in LOCK position.

• Intelligent Key can be registered up to 4 keys (Including the standard ignition key) on request from the

owner.

• The specified registration is required when replacing ECM, BCM or Intelligent Key. The registrations proce-

dure for IVIS (NATS) and registration procedure for Intelligent Key when installing the BCM, refer to CON-
SULT-III Operation Manual NATS-IVIS/NVIS.

JMKIA0058GB

Switch

Input signal to BCM

BCM function

Actuator

Push-button ignition switch

Push switch

IVIS (NATS)

• Steering lock relay
• Steering lock unit
• Starter relay (IPDM E/R)
• Starter control relay (IPDM E/R)
• Starter motor
• KEY warning lamp
• Security indicator lamp

AT device (A/T models)

P range

PNP switch (A/T models)

N, P range

Clutch interlock switch (M/T models)

Clutch ON/OFF

Stop lamp switch

Brake ON/OFF

Key slot

Key ID

Each door switch

Door open/close

ECM

Engine status signal

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< FUNCTION DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS

• Possible symptom of IVIS (NATS) malfunction is “Engine cannot start”. In V36, the engine can be started

with the Intelligent Key system and IVIS (NATS). Identify the possible causes according to “Work Flow”,
Refer to 

SEC-5, "Work Flow"

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• If ECM other than Genuine NISSAN is installed, the engine cannot be started. For ECM replacement proce-

dure, refer to 

SEC-8, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"

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PRECAUTIONS FOR KEY REGISTRATION

• The key registration is a procedure that erases the current IVIS (NATS) ID once, and then re-registers a new

ID operation. Therefore the registered Intelligent Key is necessary for this procedure. Before starting the reg-
istration operation collect all registered Intelligent Keys from the customer

• When registering the Intelligent Key, performs only one procedure to register simultaneously both ID (IVIS

“NATS” ID registration and Intelligent Key ID registration).
The IVIS (NATS) ID registration is the procedure that registers the ID stored into the transponder (integrated
in intelligent key) to BCM.
The Intelligent key ID registration is the procedure that registers the ID to BCM.

• When performing the Intelligent Key system registration only, the engine cannot be started by inserting the

key into the key slot. When performing the IVIS (NATS) registration only, the engine cannot be started by the
operation when carrying the key. The registrations of both systems should be performed.

SECURITY INDICATOR

• Warns that the vehicle is equipped with IVIS (NATS).
• The security indicator always blinks when the Intelligent Key is removed from the key slot and when the igni-

tion switch is in LOCK position.

NOTE:
Because security indicator is highly efficient, the battery is barely affected.

Component Parts Location

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