Nissan Tiida C11. Manual - part 1178

SEC-84

< FUNCTION DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

NATS (NISSAN ANTI-THEFT SYSTEM)

FUNCTION DIAGNOSIS

NATS (NISSAN ANTI-THEFT SYSTEM)

System Diagram

INFOID:0000000001404157

System Description

INFOID:0000000001404158

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

XX-XX,

"*****"

.

• If system detects malfunction, security indicator illuminate when ignition switch is turned to ON position.
• If the owner requires, ignition 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, regis-

tration* is required. 

*1

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

- ECM
- BCM
- Ignition key
- ABS actuator control unit
- EPS sontrol unit
- IPDM E/R
- Combination meter
• NATS trouble diagnosis, system initialization and additional registration of other Ignition key IDs must be car-

ried out using CONSULT-III hardware and SECURITY CARD.
When NATS initialization has been completed, the ID of the inserted ignition key or ignition key IDs can be
carried out.

PIIA1121E

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

NATS (NISSAN ANTI-THEFT SYSTEM)

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• Possible symptom of NATS malfunction is “Engine cannot start” In J10, the engine can be started with the

NATS. Identify the possible causes according to “Work Flow”. Refer to 

SEC-80, "Work Flow"

.

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

dure, refer to 

SEC-83, "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 ignition key is necessary for this procedure. Before starting the registration opera-
tion collect all registered ignition keys from the customer

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

ignition key) to BCM.

SECURITY INDICATOR

• Security indicator blinks when the ignition switch is in “OFF” or “ACC” position.
• When NATS detects trouble, the security indicator lamp lights up while ignition key is in the “ON” position.

MAINTENANCE INFORMATION

CAUTION:

If 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.

Component Parts Location

INFOID:0000000001404159

1.

BCM M18, M20
(view with glove box removed)

2.

NATS antenna amp. M21

3.

Security indicator lamp M31

4.

ECM E16

ALKIA0849ZZ

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NATS (NISSAN ANTI-THEFT SYSTEM)

Component Description

INFOID:0000000001404160

Component Reference

BCM

XX-XX, "*****"

Key switch

XX-XX, "*****"

NATS antenna amp.

XX-XX, "*****"

Security indicator

XX-XX, "*****"

IPDM E/R

XX-XX, "*****"

DIAGNOSIS SYSTEM (BCM)

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DIAGNOSIS SYSTEM (BCM)

COMMON ITEM

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

INFOID:0000000001404165

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.

IMMU

IMMU : CONSULT-III Function (BCM - IMMU)

INFOID:0000000001404166

APPLICATION ITEM

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

Diagnosis mode

Function Description

WORK SUPPORT

Changes the setting for each system function.

SELF-DIAG RESULTS

Displays the diagnosis results judged by BCM. Refer to 

XX-XX, "*****"

.

CAN DIAG SUPPORT MNTR

Monitors the reception status of CAN communication viewed from BCM.

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

• Enables to read and save the vehicle specification.
• Enables to write the vehicle specification when replacing BCM.

System

Sub system selection item

Diagnosis mode

WORK SUPPORT

DATA MONITOR

ACTIVE TEST

—

BCM

×

Door lock

DOOR LOCK

×

×

×

Rear window defogger

REAR DEFOGGER

×

×

Warning chime

BUZZER

×

×

Interior room lamp timer

INT LAMP

×

×

×

Remote keyless entry system

MULTI REMOTE ENT

×

×

×

Exterior lamp

HEAD LAMP

×

×

×

Wiper and washer

WIPER

×

×

×

Turn signal and hazard warning lamps

FLASHER

×

×

Air conditioner

AIR CONDITONER

×

Combination switch

COMB SW

×

Immobilizer

IMMU

×

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Trunk open

TRUNK

×

Vehicle security system

THEFT ALM

×

×

×

Signal buffer system

SIGNAL BUFFER

×

×

PTC heater system

PTC HEATER

×

×