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Nissan Pathfinder (2012 year). Manual - part 528

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

SEC-13

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

SEC

Component Parts Location

INFOID:0000000007355670

ALKIA1717ZZ

BCM M18, M19, M20
(view with instrument panel LH removed)

Intelligent Key unit M164
(view with glove box removed)

IPDM E/R
E119, E120, E122, E124

ECM E16

Key switch and ignition knob switch M66
(view with steering column removed)

Steering lock solenoid M65

August 2012

2012 Pathfinder

SEC-14

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

Component Description

INFOID:0000000007355671

Remote keyless entry receiver M67
(view with instrument panel RH removed)

A/T shift selector (park position switch)
M158
(view with center console removed)

Insrument panel area antenna M68
(view with center console removed)

10. Center console area antenna M212

(view with center console removed)

11. Luggage area antenna B129

(behind 3

row seat)

12. Intelligent Key warning buzzer E60

13. Front door switch LH B8

RH B108

14. Rear door switch LH B18

RH B116

15. Back door latch (door ajar switch)

D502

16. A/T assembly F9

17. Combination meter M24

18. Vehicle security indicator lamp

Item

Function

Intelligent Key unit

Receives lock/unlock signal from remote keyless entry receiver, and then transmits to BCM.

BCM

Verifies the received signal from Intelligent Key, then informs ECM whether to allow engine start.

Remote keyless entry receiver

Receives lock/unlock signal from the Intelligent Key, and then transmits to Intelligent Key unit.

Intelligent Key

Transmits button operation to remote keyless entry receiver.

Ignition knob switch

Monitors the status of the ignition knob switch.

Steering lock solenoid

Locks the steering wheel when the ignition key is off and the Intelligent Key is outside the vehicle.

Inside key antenna

Detects if Intelligent Key is inside the vehicle.

Intelligent Key warning buzzer

Warns the user of the lock/unlock condition and inappropriate operations with the buzzer sound.

A/T shift selector (park position
switch)

Detects whether the shift lever is in park.

August 2012

2012 Pathfinder

NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

SEC-15

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

SEC

NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

System Diagram

INFOID:0000000007355672

System Description

INFOID:0000000007355673

INPUT/OUTPUT SIGNAL CHART

Intelligent Key Unit

BCM

SYSTEM DESCRIPTION

NATS (Nissan Anti-Theft System) has the following immobilizer functions:

• Engine immobilizer shows high anti-theft performance to prevent engine from starting by other than the

owner.

• Only a key with key ID registered in BCM and ECM can start engine, and shows high anti-theft performance

to prevent key from being copied or stolen.

• Security indicator always flashes with mechanical key removed condition (key switch: OFF) and ignition

knob released condition on LOCK position (ignition knob switch: OFF).

• Therefore, NATS warns outsiders that the vehicle is equipped with the anti-theft system. Refer to

SEC-19,

"System Description"

• If system detects malfunction, security indicator illuminates when ignition switch is turned to ON position.

• If the owner requires, ignition key ID or mechanical key ID can be registered for up to 4 keys.

• During trouble diagnosis or when the following parts have been replaced, and if mechanical key is added,

registration* is required.

: All keys kept by the owner of the vehicle should be registered with mechanical key.

- ECM

- BCM

LIIA2537E

Switch/Input signal

Input signal to BCM

BCM function

Actuator/Output signal

Ignition knob switch

Ignition knob
(push/release)

NATS

• Steering lock unit

Key switch

Mechanical key
(Insert/remove)

Steering lock unit

Steering
(lock/unlock)

ECM

Engine status signal

Switch/Input signal

Input signal to BCM

BCM function

Actuator/Output signal

NATS antenna amp.

Key ID

NATS

• Security indicator lamp
• Starter request

ECM

Engine status signal

August 2012

2012 Pathfinder

SEC-16

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

- Mechanical key

- Intelligent Key unit

- Remote keyless entry receiver

- Steering lock solenoid

• NATS trouble diagnosis, system initialization and additional registration of other mechanical key IDs must be

carried out using CONSULT.

When NATS initialization has been completed, the ID of the inserted mechanical key or mechanical key IDs

can be carried out.

• Possible symptom of NATS malfunction is “Engine cannot start”. Identify the possible causes according to

“Work Flow”, Refer to

SEC-5, "Work Flow"

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

dure, refer to

SEC-10, "ECM RE-COMMUNICATING FUNCTION : Description"

PRECAUTIONS FOR KEY REGISTRATION

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

Therefore the registered Intelligent Key is necessary for this procedure. Before starting the registration oper-

ation collect all registered Intelligent Keys from the customer.

• The NATS ID registration is the procedure that registers the ID stored into the transponder (integrated in

mechanical key) to BCM.

The Intelligent Key ID registration is the procedure that registers the ID to Intelligent Key unit.

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

key into the key cylinder. When performing the NATS registration only, the engine cannot be started by using

the mechanical key.

SECURITY INDICATOR

• Always flashes with ignition knob released (ignition knob switch: LOCK) condition on ignition knob LOCK

position.

• Always flashes with ignition knob released (ignition knob switch: LOCK) condition on mechanical key

removed position.

MAINTENANCE INFORMATION

CAUTION:

It is necessary to perform NATS ID registration when replacing any of the following part.

If it's not (or fail to do so), the electrical system may not operate properly.

• Intelligent Key unit

• BCM

• ECM

• Mechanical key

• Steering lock solenoid

• NATS antenna amp.

August 2012

2012 Pathfinder

NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

SEC-17

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

SEC

Component Parts Location

INFOID:0000000007355674

Component Description

INFOID:0000000007355675

Key switch and ignition knob switch
M66

Steering lock solenoid M65
(view with steering column removed)

Remote keyless entry receiver M67
(view with glove box removed)

BCM M18, M20
(view with instrument panel LH re-
moved)

Intelligent Key unit M164
(view with glove box removed)

ECM E16

IPDM E/R E121
(view with cover removed)

NATS antenna amp. M21

Combination meter M24

10. Security indicator lamp

ALKIA1269ZZ

Item

Function

Intelligent Key unit

Receives lock/unlock signal from remote keyless entry receiver, and then transmits to BCM.

BCM

Controls the door lock function and room lamp function.

Remote keyless entry receiver

Receives lock/unlock signal from the Intelligent Key, and then transmits to Intelligent Key unit.

Intelligent Key

Transmits button operation to remote keyless entry receiver.

Steering lock solenoid

Locks the steering wheel when the ignition key is off and the Intelligent Key is outside the vehicle.

NATS antenna amp.

Detects the mechanical key presence in the ignition key cylinder.

August 2012

2012 Pathfinder

SEC-18

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

Security indicator

Indicates the status of the security system.

IPDM E/R

Monitors the ignition switch and the park switch signal from the TCM.

Item

Function

August 2012

2012 Pathfinder

VEHICLE SECURITY SYSTEM

SEC-19

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

SEC

VEHICLE SECURITY SYSTEM

System Diagram

INFOID:0000000007355676

System Description

INFOID:0000000007355677

DESCRIPTION

The security system provides an audible and visual alarm when an unauthorized access to the vehicle is

detected while the system is in armed phase.

The security system consist of the BCM managing the audible alarm (horn) and the visual alarm (headlamps).

OPERATION FLOW

Disarmed Phase

When the vehicle is being driven or when doors are open, the theft warning system is set in the disarmed

phase on the assumption that the owner is inside or near the vehicle.

Pre-Armed Phase And Armed Phase

The vehicle security system turns into the pre-armed phase when ignition switch is in OFF position, all doors

including glass hatch are closed and locked (using Intelligent Key, door request switch or auto relock function).

The system automatically shifts into the armed phase.

Condition of Activating The System

When the following condition is performed in armed phase, the system sounds the horns and flashes the

headlamps for about 50 seconds.

• Any door is opened.

ALKIA0709GB

PIIA1367E

August 2012

2012 Pathfinder

SEC-20

< SYSTEM DESCRIPTION >

[WITH INTELLIGENT KEY SYSTEM]

VEHICLE SECURITY SYSTEM

Condition of Deactivating The System

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

• Unlock the doors with Intelligent Key or door request switch.

• Use the mechanical key to unlock the driver door using the door key cylinder.

Component Parts Location

INFOID:0000000007355678

BCM M18, M19, M20
(view with instrument panel LH re-
moved)

IPDM E/R E122, E123, E124
(view with cover removed)

Horn relay H-1

Main power window and door lock/
unlock switch D7, D8

Front door switch LH B8
RH B108

Front door lock assembly LH (key cylin-
der switch) D14

Power window and door lock/unlock
switch RH D105

Rear door switch LH B18
RH B116

Glass hatch ajar switch D503

10. Back door latch (door ajar switch)

D502
Glass hatch ajar switch D503

11. Horn E3

(behind front combination lamp LH)

12. Combination meter M24

13. Security indicator lamp

ALKIA1718ZZ

August 2012

2012 Pathfinder

Content .. 526 527 528 529 ..