Nissan Murano Z51. Manual - part 1311

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< SYSTEM DESCRIPTION >

[FOR USA AND CANADA]

OCCUPANT CLASSIFICATION SYSTEM

Component Description

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1.

Occupant classification system con-
trol unit

2.

Occupant classification system seat 
sensor mat

3.

Front passenger air bag OFF indica-
tor

A.

Occupant classification system con-
trol unit harness connector

Component parts

Outline of function

Occupant classification system seat 
sensor mat

Detects if the passenger seat is empty or occupied

Occupant classification system control 
unit

Transmits the passenger seat status (occupied or empty) to air bag diagnosis sensor unit

Passenger air bag OFF indicator

Turns the passenger air bag OFF indicator lamp ON when the passenger seat is occupied 
by a child or a child-seat

PASSENGER SEAT BELT WARNING SYSTEM

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< SYSTEM DESCRIPTION >

[FOR USA AND CANADA]

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PASSENGER SEAT BELT WARNING SYSTEM

System Diagram

INFOID:0000000005513484

System Description

INFOID:0000000005513485

This Passenger Seat Belt Warning System has the following function.

Turns ON  seat belt warning lamp, when the Occupant Classification System (OCS) judges adult or child in the
passenger seat and the passenger seat belt buckle switch is not on.
NOTE:
In addition, a seat belt warning lamp illuminates and a seat belt alarm sounds, when the driver seat belt buckle
switch is not on, This does not relate to the air bag sensor. (Refer to BCM.)

NOTE:
Operation of air bag diagnosis sensor unit when air bag diagnosis sensor unit receives information from Occu-
pant Classification System (OCS)

JMHIA0498GB

Status (front passenger 
seat)

Passenger air bag 

Passenger air bag OFF 
indicator (Cut-off tell-
tale)

Air bag warning lamp

Seat belt warning lamp 
(When front passenger 
seat is unbuckled)

Empty

Suppress

Off

Off

Off

Child/ child-seat

Suppress

On

Off

On

Adult

Enable to deploy

Off

Off

On

Malfunction

Suppress

On

Blinking

Off

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< SYSTEM DESCRIPTION >

[FOR USA AND CANADA]

PASSENGER SEAT BELT WARNING SYSTEM

Component Parts Location

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Component Description

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1.

Combination meter (Seat belt warn-
ing lamp)

2.

Seat belt buckle switch (Driver side)  3.

Seat belt buckle switch (Passenger 
side)

A.

Combination meter panel

B.

Driver side

C.

Passenger side

JMHIA0557ZZ

Component parts

Outline of function

Seat belt buckle switch (Driver side)

Detects if the driver seat belt is fastened or unfastened
NOTE:
Lighting of a seat belt warning lamp and a seat belt alarm are outputted when the seat 
belt buckle switch (driver side) is not put on, but it does not relate to an air bag diag-
nosis sensor unit

Seat belt buckle switch (Passenger side)

Detects if the seat belt buckle switch (passenger side) is fastened or unfastened

Combination meter (Seat belt warning lamp)

Turns the seat belt warning lamp ON when the passenger seat belt is unfastened

DIAGNOSIS SYSTEM (AIRBAG)

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< SYSTEM DESCRIPTION >

[FOR USA AND CANADA]

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DIAGNOSIS SYSTEM (AIRBAG)

Diagnosis Description

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CAUTION:

• Do not use electrical test equipment on any circuit related to the SRS unless instructed in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.

• Do not repair, splice or modify the SRS wiring harness. If the harness is damaged, replace it with a

new one.

• Keep ground portion clean.

DIAGNOSIS FUNCTION

• The SRS self-diagnosis results can be read by using air bag warning lamp and/or CONSULT-III.
• The user mode is exclusively prepared for the customer (driver). This mode warns the driver of a system

malfunction through the operation of the air bag warning lamp.

• The diagnosis mode allows the technician to locate and inspect the malfunctioning part.
• The mode applications for the air bag warning lamp and CONSULT-III are as follows.

HOW TO PERFORM TROUBLE DIAGNOSIS FOR QUICK AND ACCURATE REPAIR

A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a malfunction. It is important to fully understand the symp-
toms or conditions for a customer complaint.

Information from Customer.

• WHAT..... Vehicle model.
• WHEN..... Date, Frequencies.
• WHERE..... Road conditions.
• HOW..... Operating conditions, Symptoms.

Preliminary Check.

Check that the following parts are in good order.
• Battery (Refer to 

PG-3, "How to Handle Battery"

).

• Fuse (Refer to

PG-91, "Fuse"

 ).

• System component-to-harness connections.

HOW TO ERASE SELF-DIAGNOSTIC RESULTS (With CONSULT-III)

• “SELF-DIAG [CURRENT]”

A current self-diagnosis result is displayed on CONSULT-III screen in real time.
After the malfunction is repaired completely, no malfunction is detected on “SELF-DIAG [CURRENT]”.

• “SELF-DIAG [PAST]”

Return to “SELF-DIAG [CURRENT]” CONSULT-III screen by touching “BACK” key of CONSULT-III and
select “SELF-DIAG [CURRENT]” in SELECT DIAG MODE. Touch “ERASE” in “SELF-DIAG [CURRENT]”
mode.
NOTE:
If the memory of the malfunction in “SELF-DIAG [PAST]” is not erased, the user mode shows the system
malfunction by the operation of the warning lamp even if the malfunction is repaired completely.

• “TROUBLE DIAG RECORD”

The memory of “TROUBLE DIAG RECORD” cannot be erased.

HOW TO ERASE SELF-DIAGNOSTIC RESULTS (Without CONSULT-III)

After a malfunction is repaired, turn the ignition switch OFF for at least one second, then turn ignition switch
ON diagnosis mode returns to the user mode. At that time the self-diagnosis result is cleared.

User mode

Diagnosis mode

Display type

Air bag warning lamp

X

X

ON-OFF operation

CONSULT-III

–

X

Monitoring