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Nissan Versa Note. Manual - part 737

SYSTEM

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< SYSTEM DESCRIPTION >

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OCCUPANT CLASSIFICATION SYSTEM : System Description

INFOID:0000000009592882

SYSTEM DIAGRAM

DESCRIPTION

The occupant classification system (OCS) identifies different size occupants, out of position occupants, and

detects if child seat is present in the front passenger seat. The OCS control unit (2) receives inputs from the

occupant classification sensors (1) (located on the passenger seat track assembly). Depending on classifica-

tion of the passenger, the OCS sends a signal to the air bag diagnosis sensor unit. The air bag diagnosis sen-

sor unit uses this signal and the seat belt buckle switch RH signal to determine deployment or non deployment

of the passenger front air bag in the event of a collision. Depending on the signals received, the air bag diag-

nosis sensor unit can disable the passenger front air bag completely. The OCS (weight sensors) must be set

to zero point using CONSULT after servicing the OCS system.

NOTE:

• CONSULT can be used to confirm when “zero point reset” for OCS is complete.

• Always perform zero point reset after the removal and installation of the seat or when disconnecting the

OCS control unit harness connector even if zero point reset has been completed in the past.

• If zero point reset is incomplete, the passenger air bag will be disabled and the passenger air bag off indica-

tor will be ON.

• In case of customer concern, CONSULT can be used to confirm the passenger air bag status (readiness).

Passenger Air Bag Status Conditions

NOTE:

AWHIA0338GB

Front Passenger Seat

(Condition)

PASS AIR BAG OFF Indicator

(Status)

Passenger Air Bag Status

(Readiness)

CONSULT Display

Seat occupied

OFF

Active (enabled)

Seat occupied

NOTE

Deactivated (disabled)

OFF

Seat empty

OFF

Deactivated (disabled)

OFF

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< SYSTEM DESCRIPTION >

SYSTEM

Passenger does not meet Occupant Classification System specifications for passenger air bag activation.

SEAT BELT WARNING LAMP SYSTEM
SEAT BELT WARNING LAMP SYSTEM : System Description

INFOID:0000000009592884

SYSTEM DIAGRAM

AWHIA0548ZZ

ALHIA0028GB

SYSTEM

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< SYSTEM DESCRIPTION >

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The seat belt warning lamp (1) will remind the driver if the driver or

front passenger seat belt should be buckled. The system works in

conjunction with the occupant classification system. Refer to

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11, "OCCUPANT CLASSIFICATION SYSTEM : System Descrip-

tion"

Seat Belt Warning System Operation

AWHIA0547ZZ

Driver seat status
(Ignition switch ON)

Passenger seat status

Seat belt buckle switch
LH status

Seat belt buckle switch
RH status

Seat belt warning lamp

Seat occupied

Buckled

Off

Unbuckled

Seat unoccupied

—

Off

—

Unbuckled

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< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (AIR BAG)

DIAGNOSIS SYSTEM (AIR BAG)

Description

INFOID:0000000009592864

CAUTION:

• Never 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.

• Never 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-diagnostic results can be read with air bag warning lamp and/or CONSULT.

• 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 are as per the following items.

×: Application, —: Not application

On Board Diagnosis Function

INFOID:0000000009592865

ON-BOARD DIAGNOSIS

There are two self diagnosis functions with air bag warning lamp per the following items.

• USER MODE

• DIAGNOSIS MODE

METHOD OF STARTING

• Diagnosis mode changes from user mode to diagnosis mode when changing operation is performed.

• In user mode, when SRS air bag warning lamp is not turning ON, changing to diagnosis mode by ignition

switch operation is not possible.

• In diagnosis mode, when repair is complete and system is normal, the mode changes to user mode when

ignition switch is turned from OFF to ON.

Procedure to Change Diagnosis Mode

1. Turn ignition switch from OFF to ON.

2. SRS air bag lamp turns ON for 7 seconds and turns OFF, then turn ignition switch OFF within 2 seconds

after the lamp turns OFF.

NOTE:

When in Diagnosis Mode, the air bag warning lamp may illuminate for more than 7 seconds after the igni-

tion switch is turned ON. If this is the case, the ignition switch must still be cycled OFF after 7 seconds.

3. After turning ignition switch OFF, wait for 3 seconds or more.

4. Repeat operation 1 to 3 for 2 times so that operation 1 to 3 is repeated for 3 times in total.

5. Turn ignition switch from OFF to ON. Diagnosis mode changes.

USER MODE

In USER MODE, air bag warning lamp on combination meter turns ON when a malfunction is detected and

warns the customer (driver).

How to Read Air Bag Warning Lamp

1. Turn the ignition switch from OFF to ON, and check that the air bag warning lamp turns ON.
2. Compare the air bag warning lamp operation pattern with the examples.

Air Bag Warning Lamp Examples:

Diagnosis tool

User mode

Diagnosis mode

Air bag warning lamp

CONSULT

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