Infiniti FX35, FX50 (S51). Manual - part 1651

INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS

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< SYSTEM DESCRIPTION >

[INTELLIGENT KEY SYSTEM]

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1.

BCM M118, M119, M121, M122, 
M123

2.

IPDM E/R E5, E6, E7

3.

ECM
VQ engine: M107
VK engine: M160

4.

A/T assembly connector F51

5.

TCM (built in A/T assembly) F151

6.

Push-button ignition switch M50

7.

Unified meter and A/C amp. M66, 
M67

8.

Inside key antenna (instrument cen-
ter) M131

9.

Front door switch (driver side) B16

10. Back door lock assembly

(door switch) D122

11.

A/T shift selector (detention switch) 
M137

12. Stop lamp switch E110

13. Hood switch E30

14. Key slot M22

A.

Dash side lower (passenger side)

B.

Engine room dash panel (RH)

C.

Behind the instrument assist lower 
panel

D.

A/T assembly

E.

View with the cluster lid C removed

F.

View with the center console assem-
bly removed

G.

Behind the instrument assist lower 
panel

H.

View with hood switch incorporated 
into hood lock (RH)

JMKIA2675ZZ

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< SYSTEM DESCRIPTION >

[INTELLIGENT KEY SYSTEM]

INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS

Component Description

INFOID:0000000005249405

1.

Power window main switch
(door lock and unlock switch) D8, D9

2.

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

3.

Inside key antenna (console) M146

4.

Inside key antenna
(luggage room) B228

5.

Remote keyless entry receiver M104 6.

Security indicator lamp
(combination meter M53)

7.

Key warning lamp
(combination meter M53)

8.

Horn (high) 2 E69, E70

9.

Horn (high) 1 E61, E62

A.

View with front door finisher removed B.

Under the rear seat seatback

C.

Behind the instrument lower panel 
RH

D.

Built in combination meter

E.

Built in combination meter

F.

View with front bumper removed

Component Reference

BCM

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Steering lock unit

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Push-button ignition switch

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Door switch

DLK-69

Key slot

DLK-101

A/T shift selector (detention switch)

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Inside key antenna

DLK-61

Remote keyless entry receiver

DLK-83

Stop lamp switch

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Transmission range switch

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Steering lock relay

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Starter relay

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Starter control relay

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Security indicator lamp

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Key warning lamp

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VEHICLE SECURITY SYSTEM

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< SYSTEM DESCRIPTION >

[INTELLIGENT KEY SYSTEM]

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VEHICLE SECURITY SYSTEM

System Diagram

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System Description

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OPERATION FLOW

SETTING THE VEHICLE SECURITY SYSTEM

Initial Condition

• Ignition switch is in the OFF position.

Disarmed Phase

• When any door or back door is open, the vehicle security system is set in the disarmed phase on the

assumption that the owner is inside or near the vehicle.

• When the vehicle security system is in the disarmed phase, the security indicator lamp blinks every 2.4 sec-

onds.

Pre-armed Phase and Armed Phase

When the following operation is performed, the vehicle security system turns into the “pre-armed” phase. (The
security indicator lamp illuminates.)

1.

BCM receives LOCK signal from front door request switch, Intelligent Key or door key cylinder, after back
door and all doors are closed.

2.

The security indicator lamp illuminates for 30 seconds. Then, the system automatically shifts into the
“armed” phase.

JMKIA1873GB

JMKIA2505GB

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< SYSTEM DESCRIPTION >

[INTELLIGENT KEY SYSTEM]

VEHICLE SECURITY SYSTEM

CANCELING THE SET VEHICLE SECURITY SYSTEM

When one of the following operations is performed, the armed phase is canceled.
1.

Unlock all doors with the door request switch, Intelligent Key or door key cylinder.

2.

Turn ignition switch to the “ON” or “ACC” position.

CANCELING THE ALARM OPERATION OF THE VEHICLE SECURITY SYSTEM

When unlocking all doors with the door request switch, Intelligent Key or door key cylinder switch the alarm
operation is canceled.

ACTIVATING THE ALARM OPERATION OF THE VEHICLE SECURITY SYSTEM

Check that the system is in the armed phase. (The security indicator lamp blinks every 2.4 seconds.)
When the following operation 1 or 2 is performed, the system sounds the horns and blinks the headlamps for
about 50 seconds.

1.

Back door or any door is opened during the armed phase.

2.

Disconnecting and connecting the battery connector before canceling the armed phase.

PANIC ALARM OPERATION

Intelligent Key system may or may not operate vehicle security system (horn and headlamps) as required.
When the Intelligent Key system is triggered, ground is supplied intermittently to both headlamp relay and horn
relay.
When headlamp relay and horn relay are energized, then power is supplied to headlamps (high beam and low
beam) and horns (high and low).
The headlamps flash and the horn sounds intermittently.
The alarm automatically turns off after 50 seconds or when BCM receives any signal from Intelligent Key, door
request switch or door key cylinder.