Nissan Qashqai J11. Manual - part 1473

COMPONENT PARTS

SEC-191

< SYSTEM DESCRIPTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

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TCM (CVT models)

TCM receives the shift position signal from transmission range switch, and then transmits the 
P/N position signal to BCM via CAN communication.
BCM confirms the selector lever position with the following 5 signals.
• P position signal from CVT shift selector (detention switch)
• P/N position signal from transmission range switch
• P position signal from IPDM E/R (CAN)
• Neutral position signal from IPDM E/R (CAN)
• P/N position signal from TCM (CAN)
IPDM E/R confirms the selector lever position with the following 3 signals.
• P position signal from CVT shift selector (detention switch)
• P/N position signal from transmission range switch
• P/N position signal from BCM (CAN)
Refer to 

TM-436, "CVT CONTROL SYSTEM : Component Parts Location"

 for detailed instal-

lation location.

Transmission range switch 
(CVT models)

Transmission range switch detects the selector lever position, and then transmits the P/N po-
sition signal to BCM and IPDM E/R.
BCM confirms the CVT shift selector position with the following 5 signals.
• P position signal from CVT shift selector (detention switch)
• P/N position signal from transmission range switch
• P position signal from IPDM E/R (CAN)
• Neutral position signal from IPDM E/R (CAN)
• P/N position signal from TCM (CAN)
IPDM E/R confirms the CVT shift selector position with the following 3 signals.
• P position signal from CVT shift selector (detention switch)
• P/N position signal from transmission range switch
• P/N position signal from BCM (CAN)
Refer to 

TM-436, "CVT CONTROL SYSTEM : Component Parts Location"

 for detailed instal-

lation location.

Reverse/neutral position 
switch (M/T models)

Reverse/neutral position switch detects that shift lever is in the neutral position, and then 
transmits ON/OFF signal to BCM.
Refer to 

TM-136, "Component Parts Location"

 for detailed installation location.

Hood switch

Hood switch detects that brake hood is open or closed, and then transmits that signal to the 
IPDM E/R.

Horn

Horn operate for warning vehicle surroundings when VEHICLE SECURITY SYSTEM oper-
ates.

ECM

ECM controls the engine.
When ignition switch is turned ON, BCM starts communication with ECM and performs the 
ID verification between BCM and ECM.
If the verification result is OK, the engine can start. If the verification result is NG, the engine 
can not start.
Refer to 

ECH-13, "Component Parts Location"

 (HRA2DDT engine models), 

ECM-25, "EN-

GINE CONTROL SYSTEM : Component Parts Location"

 (MR16DDT engine models), 

ECM-629, "ENGINE CONTROL SYSTEM : Component Parts Location"

 (MR20DD engine 

models), 

ECK-12, "Component Parts Location"

 (K9K engine models) or 

EC9-14, "Compo-

nent Parts Location"

 (R9M engine models) for detailed installation location.

IPDM E/R

IPDM E/R controls these relays while communicating with BCM.
When IPDM E/R receives the alarm request signal from BCM, IPDM E/R activates vehicle 
security horn and hazard warning lamps intermittently.
Refer to 

PCS-5, "Component Parts Location"

 for detailed installation location.

BCM

BCM controls NISSAN ANTI-THEFT SYSTEM (NATS) and VEHICLE SECURITY SYSTEM.
BCM performs ID verification between BCM and ECM when ignition switch is turned ON. If 
the ID verification result is OK, ECM can start engine.
Refer to 

BCS-6, "BODY CONTROL SYSTEM : Component Parts Location"

 for detailed in-

stallation location.

Front door switch (passenger 
side)

Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.
Refer to 

DLK-388, "Component Parts Location"

 for detailed installation location.

Rear door switch LH

Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.
Refer to 

DLK-388, "Component Parts Location"

 for detailed installation location.

No.

Component Function

SEC-192

< SYSTEM DESCRIPTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

COMPONENT PARTS

NATS Antenna Amp.

INFOID:0000000010338032

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.

Hood Switch

INFOID:0000000010504932

Hood switch detects that hood is open, and then transmits ON/OFF
signal to IPDM E/R. IPDM E/R transmits hood switch signal to BCM
via CAN communication.

Siren Control Unit

INFOID:0000000010479732

Siren control unit monitors the vehicle condition and controls the vehicle security system.

Intruder Sensor

INFOID:0000000010479733

Intruder sensor detects a movement entering passenger compart-
ment, then transmits the signal to siren control unit.

Back door switch

Back door switch is integrated into back door look assembly.
Back door switch detects back door open/close condition, and then transmits ON/OFF signal 
to BCM.
Refer to 

DLK-388, "Component Parts Location"

 for detailed installation location.

Rear door switch RH

Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.
Refer to 

DLK-388, "Component Parts Location"

 for detailed installation location.

Front door switch (Driver 
side)

Door switch detects door open/close condition and then transmits ON/OFF signal to BCM.
Refer to 

DLK-388, "Component Parts Location"

 for detailed installation location.

NATS antenna amp.

Refer to 

SEC-192, "NATS Antenna Amp."

.

Sensor cancel switch

Refer to 

SEC-193, "Sensor Cancel Switch"

.

No.

Component Function

JMKIB3260ZZ

JMKIB3262ZZ

COMPONENT PARTS

SEC-193

< SYSTEM DESCRIPTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

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Sensor Cancel Switch

INFOID:0000000010479734

BCM deactivates intruder sensor for the vehicle security system
when BCM receives sensor cancel switch ON signal.

JMKIB3261ZZ

SEC-194

< SYSTEM DESCRIPTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

SYSTEM

SYSTEM

NISSAN ANTI-THEFT SYSTEM

NISSAN ANTI-THEFT SYSTEM : System Description

INFOID:0000000010338033

SYSTEM DIAGRAM

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 blinks when ignition switch is in any position other than ON. 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.

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

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

SEC-237, "Work

Flow"

.

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

procedure, refer to 

ECH-320, "Removal and Installation"

(HRA2DDT engine models), 

ECK-398, "Removal

and Installation"

(K9K engine models) or 

EC9-409, "Removal and Installation"

(R9M engine models).

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 other than ON. 
• Security indicator lamp turns OFF when the ignition switch is turned ON. 

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).

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 transmits the verification OK signal to ECM, and then ECM can
start the engine.

JMKIB3228GB