Nissan Maxima. Manual — part 1047
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
SEC-13
< SYSTEM DESCRIPTION >
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Component Parts Location
INFOID:0000000010051902
1.
BCM M16, M17, M18, M19, M21
(view with instrument panel removed)
2.
Front door switch LH B8
RH B108
3.
Rear door switch LH B18
RH B116
4.
TCM F15
5.
ECM E10
6.
Push button ignition switch M38
7.
Stop lamp switch E38
(view with lower driver instrument
panel removed)
8.
Combination meter M24
9.
Security indicator lamp
AWKIA1699ZZ
SEC-14
< SYSTEM DESCRIPTION >
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Component Description
INFOID:0000000010051903
10. Information display
11. Remote keyless entry receiver M27
(view with instrument panel removed)
12. Key slot M40
13. Front console antenna M41
(view with center console removed)
14. Rear parcel shelf antenna B29
15. CVT shift selector M78
Component Reference
BCM
Push-button ignition switch
Door switch
CVT shift selector
Inside key antenna
Remote keyless entry receiver
Stop lamp switch
Starter relay
Starter control relay
Security indicator
Key warning lamp
NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)
SEC-15
< SYSTEM DESCRIPTION >
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NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)
System Diagram
INFOID:0000000010051904
System Description
INFOID:0000000010051905
INPUT/OUTPUT SIGNAL CHART
SYSTEM DESCRIPTION
• The NVIS (NATS) is an anti-theft system. By registering an Intelligent Key ID into the vehicle, it prevents the
engine being started by an unregistered Intelligent Key. It has a higher protection against auto thefts than
duplicate mechanical keys.
• It performs the ID verification when starting the engine in the same way as the Intelligent Key system. But, it
performs the NVIS (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 A35 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 NVIS
(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, forewarning that the NVIS
(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. For registration proce-
dure for NVIS (NATS) and registration procedure for Intelligent Key when installing the BCM, refer to CON-
SULT Immobilizer mode and follow the on-screen instructions.
• Possible symptom of NVIS (NATS) malfunction is “Engine cannot start”. In A35, the engine can be started
with the Intelligent Key system and NVIS (NATS). Identify the possible causes according to “Work Flow”.
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AWKIA1700GB
Switch
Input signal to BCM
BCM function
Actuator
Push-button ignition switch
Push switch
NVIS (NATS)
• Starter relay (IPDM E/R)
• Starter control relay (IPDM E/R)
• Starter motor
• KEY warning lamp
• Security indicator lamp
CVT shift selector
P range
TCM
N, P range
Stop lamp switch
Brake ON/OFF
Key slot
Key ID
Each door switch
Door open/close
ECM
Engine status signal
SEC-16
< SYSTEM DESCRIPTION >
NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)
• If ECM other than Genuine NISSAN is installed, the engine cannot be started. For ECM replacement proce-
dure, refer to
SEC-9, "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 NVIS (NATS) ID once, and then re-registers a
new ID operation. Therefore, the registered Intelligent Key is necessary for this procedure. Before starting
the registration operation collect all registered Intelligent Keys from the customer
• When registering the Intelligent Key, perform only one procedure to register simultaneously both ID (NVIS
“NATS” ID registration and Intelligent Key ID registration).
The NVIS (NATS) ID registration is the procedure that registers the ID stored into the transponder (inte-
grated 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 NVIS (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 NVIS (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.
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