Nissan Pathfinder (2012 year). Instruction — part 528
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
SEC-13
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
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Component Parts Location
INFOID:0000000007355670
ALKIA1717ZZ
1.
BCM M18, M19, M20
(view with instrument panel LH removed)
2.
Intelligent Key unit M164
(view with glove box removed)
3.
IPDM E/R
E119, E120, E122, E124
4.
ECM E16
5.
Key switch and ignition knob switch M66
(view with steering column removed)
6.
Steering lock solenoid M65
August 2012
2012 Pathfinder
2012 Pathfinder
SEC-14
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Component Description
INFOID:0000000007355671
7.
Remote keyless entry receiver M67
(view with instrument panel RH removed)
8.
A/T shift selector (park position switch)
M158
(view with center console removed)
9.
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
rd
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
2012 Pathfinder
NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)
SEC-15
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
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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
.
• 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.
*1
: 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
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
.
• 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
2012 Pathfinder
NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)
SEC-17
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
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Component Parts Location
INFOID:0000000007355674
Component Description
INFOID:0000000007355675
1.
Key switch and ignition knob switch
M66
2.
Steering lock solenoid M65
(view with steering column removed)
3.
Remote keyless entry receiver M67
(view with glove box removed)
4.
BCM M18, M20
(view with instrument panel LH re-
moved)
5.
Intelligent Key unit M164
(view with glove box removed)
6.
ECM E16
7.
IPDM E/R E121
(view with cover removed)
8.
NATS antenna amp. M21
9.
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
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
2012 Pathfinder
VEHICLE SECURITY SYSTEM
SEC-19
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
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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
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
1.
BCM M18, M19, M20
(view with instrument panel LH re-
moved)
2.
IPDM E/R E122, E123, E124
(view with cover removed)
3.
Horn relay H-1
4.
Main power window and door lock/
unlock switch D7, D8
5.
Front door switch LH B8
RH B108
6.
Front door lock assembly LH (key cylin-
der switch) D14
7.
Power window and door lock/unlock
switch RH D105
8.
Rear door switch LH B18
RH B116
9.
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
2012 Pathfinder
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