Toyota
Nissan Versa
 Sedan Service Manual
Body exterior, doors, roof & vehicle security » Security control system (SEC)
Nissan vehicle immobilizer system-NATS

NISSAN VEHICLE IMMOBILIZER SYSTEMNATS : System Diagram

NISSAN VEHICLE IMMOBILIZER SYSTEMNATS : System Diagram

NISSAN VEHICLE IMMOBILIZER SYSTEMNATS : System Description

INPUT/OUTPUT SIGNAL CHART

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 anyone 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)
  • Therefore, NATS warns outsiders that the vehicle is equipped with the anti-theft system.
  • 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 5 keys.
  • During trouble diagnosis or when the following parts have been replaced, and if ignition key is added, registration* 1 is required.

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

  • ECM
  • BCM
  • Ignition key
  • Remote keyless entry receiver
  • 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 "Work Flow".
  • If ECM other than Genuine NISSAN is installed, the engine cannot be started. For ECM replacement procedure, refer to SEC "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 key is necessary for this procedure. Before starting the registration procedure, collect all registered 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 key ID registration is the procedure that registers the ID to the BCM.

  • When performing the 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 ignition key.

SECURITY INDICATOR

Always flashes with ignition key in the OFF 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.

  • BCM
  • ECM
  • IPDM E/R
  • Ignition key
  • NATS antenna amp.
  • Dongle unit
  • Combination meter

DIAGNOSIS SYSTEM (BCM)

COMMON ITEM

COMMON ITEM : CONSULT Function (BCM -COMMON ITEM)

APPLICATION ITEM

CONSULT performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions.

IMMU

IMMU : CONSULT Function (BCM - IMMU)

SELF DIAGNOSTIC RESULT

Refer to BCS "DTC Index".

ACTIVE TEST                           

WORK SUPPORT

    More about «Security control system (SEC)»:

    Precautions

    Component parts Component parts Component parts

    Intelligent key system/engine start function

    Nissan anti-theft system

    Vehicle security system

    Diagnosis system (BCM)

    Diagnosis and repair work flow

    Additional service when replacing control unit

    P1610 Lock mode

    P1611 ID Discord, IMMU-ECM

    P1612 Chain of ECM-IMMU

    B2192 ID discord, IMMU-ECM

    B2193 Chain of ECM-IMMU

    B2195 Anti-scanning

    B2196 Dongle unit

    B2198 NATS antenna AMP

    B2555 Stop lamp

    B2556 Push-button ignition switch

    B2557 Vehicle speed

    B2601 Shift position

    B2602 Shift position

    B2603 Shift position

    B2604 Shift position

    B2605 Shift position

    B2608 Starter relay

    B260F Engine status

    B26F3 Starter control relay

    B26F4 Starter control relay

    B26F7 BCM

    B26FC Key registration

    B210B Starter control relay

    B210C Starter control relay

    B210D Starter relay

    B210E Starter relay

    B210F Shift position/clutch interlock switch

    B2110 Shift position/clutch interlock switch

    Engine does not start when intelligent key is inside of vehicle

    Security indicator lamp does not turn on or blink

    NATS antenna AMP

    Push-button ignition switch

    Remote keyless entry receiver

    Precautions

    Nissan vehicle immobilizer system-NATS

    Diagnosis system (IPDM E/R)

    Diagnosis and repair workflow

    Inspection and adjustment

    U1000 CAN Comm

    U1010 Control unit (CAN)

    P1610 Lock mode

    B2190, P1614 NATS antenna AMP

    B2191, P1615 Difference of key

    B2192, P1611 ID discord, IMMU-ECM

    B2193, P1612 Chain of ECM-IMMU

    B2195 Anti-scanning

    B2196 Dongle unit

    Power supply and ground circuit

    Vehicle security indicator

    Nissan vehicle immobilizer systemnats symptoms

    NATS antenna AMP

    Nissan Versa Sedan Service Manual / Body exterior, doors, roof & vehicle security / Security control system (SEC) / Nissan vehicle immobilizer system-NATS

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