Nissan March K13. Manual - part 598

COMPONENT PARTS

SEC-131

< SYSTEM DESCRIPTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

If the verification result is OK, ECM can start engine. If the verification result is NG, ECM cannot start engine.

Ignition Key

INFOID:0000000006014764

The ID verification is performed between BCM and ignition key via NATS antenna amp. when ignition switch is
turned ON. If an unregistered ID of ignition key is used, the operation of the starting engine is prohibited.

NATS Antenna Amp.

INFOID:0000000006014765

The ID verification is performed between BCM and ignition key via NATS antenna amp. when ignition switch is
turned ON. If an unregistered ID of ignition key is used, the operation of the starting engine is prohibited.

Security Indicator lamp

INFOID:0000000006014766

Security indicator lamp is located on combination meter.
Nissan Anti-Theft System (NATS) conditions are indicated by blinking or illumination of security indicator lamp.

SEC-132

< SYSTEM DESCRIPTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

SYSTEM

SYSTEM

NISSAN ANTI-THEFT SYSTEM

NISSAN ANTI-THEFT SYSTEM : System Diagram

INFOID:0000000006014767

NISSAN ANTI-THEFT SYSTEM : System Description

INFOID:0000000006014768

SYSTEM DESCRIPTION

Nissan Anti-Theft System (NATS) has the following immobilizer functions:
• NATS shows high anti-theft performance to prevent engine from starting by anyone other than the owner

who has the registered ignition key.

• The ignition key has NATS ID and only ignition key which has the same ID as the ID registered in BCM and

ECM can start engine. This makes high anti-theft performance to prevent the vehicle from being stolen using
a copied ignition key.

• Security indicator lamp always flashes when ignition switch is in any position other than the ON position.

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

• If the system detects a malfunction, security indicator lamp illuminates when ignition switch is turned ON.
• If the owner requires, ignition key ID can be registered for up to 5 keys.
• During trouble diagnosis, when additional ignition key is needed, or when the following components are

replaced, the ID registration is required. For the registration procedure, refer to CONSULT-III Operation
Manual NATS-IVIS/NVIS.

- BCM
- Ignition key
• Possible symptom of NATS malfunction is “Engine cannot start”. The engine can not be started because of

other than the NATS malfunction, so start the trouble diagnosis according to 

SEC-139, "Work Flow"

.

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

procedure, refer to 

EC-524, "Removal and Installation"

  and 

EC-376, "Work Procedure"

 [HR12DE (TYPE 2)].

PRECAUTIONS FOR KEY REGISTRATION

• Refer to CONSULT-III Operation Manual NATS-IVIS/NVIS, for the actual procedure of NATS ID registration.
• The NATS ID registration is the procedure that registers the ID stored into the ignition key (transponder is

integrated) to BCM.

SECURITY INDICATOR LAMP

• Security indicator lamp is located on combination meter and warns that the vehicle is equipped with NATS. 
• Security indicator lamp always blinks, when the ignition switch is in any position except the ON position. 
• Security indicator lamp turns OFF, when the ignition switch is in ON position. 

OPERATION WHEN IGNITION KEY IS INSERTED INTO IGNITION KEY CYLINDER

1.

When ignition switch is turned ON, BCM activates NATS antenna amp. to start NATS ID verification with
the ignition key (transponder is integrated).

JMKIA4753GB

SYSTEM

SEC-133

< SYSTEM DESCRIPTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

2.

BCM receives the NATS ID signal from ignition key via NATS antenna amp. and verifies it with the regis-
tered ID.

3.

When the NATS ID verification result is OK, BCM performs the ID verification between BCM and ECM.

4.

When the verification result is OK, BCM sends the verification OK signal to ECM, and then ECM can start
the engine.

5.

When the ignition switch is turned to the START position, BCM sends the starter request signal to IPDM E/
R.

SEC-134

< SYSTEM DESCRIPTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

DIAGNOSIS SYSTEM (BCM)

DIAGNOSIS SYSTEM (BCM)

COMMON ITEM

COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)

INFOID:0000000006032067

APPLICATION ITEM

CONSULT-III performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.

×

: Applicable item

• *1: For models without NATS this mode is not used. 

• *2: This item is displayed, but is not used.

THEFT ALM

Diagnosis mode

Function Description

Work Support

Changes the setting for each system function.

Self Diagnostic Result

Displays the diagnosis results judged by BCM.

CAN Diag Support Monitor

Monitors the reception status of CAN communication viewed from BCM. Refer to CONSULT-III opera-
tion manual.

Data Monitor

The BCM input/output signals are displayed.

Active Test

The signals used to activate each device are forcibly supplied from BCM.

Ecu Identification

The BCM part number is displayed.

Configuration

• Read and save the vehicle specification.
• Write the vehicle specification when replacing BCM.

System

Sub system selection item

Diagnosis mode

Work Support

Data Monitor

Active Test

Door lock

DOOR LOCK

×

×

Rear window defogger

REAR DEFOGGER

×

×

Warning chime

BUZZER

×

×

Interior room lamp control

INT LAMP

×

×

×

Remote keyless entry system

MULTI REMOTE ENT

×

×

×

Exterior lamp

HEAD LAMP

×

×

×

Wiper and washer

WIPER

×

×

×

Turn signal and hazard warning lamps

FLASHER

×

×

• Automatic air conditioner
• Manual air conditioner

AIR CONDITONER

×

Combination switch

COMB SW

×

Body control system

BCM

×

NATS

IMMU

×

*

1

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Back door

TRUNK

×

—

THEFT ALM*

2

×

×

—

RETAINED PWR*

2

Signal buffer system

SIGNAL BUFFER

×

×

Panic alarm

PANIC ALARM

×