Nissan Versa Sedan. Manual - part 729

SYSTEM

SRC-11

< SYSTEM DESCRIPTION >

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SRC

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

SEAT BELT WARNING LAMP SYSTEM
SEAT BELT WARNING LAMP SYSTEM : System Diagram

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SRC-12

< SYSTEM DESCRIPTION >

SYSTEM

SEAT BELT WARNING LAMP SYSTEM : 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 buck-

led. The system works in conjunction with the occupant classification system. Refer to 

SRC-10, "OCCUPANT

CLASSIFICATION SYSTEM : System Description"

.

Seat Belt Warning System Operation

AWHIA0540GB

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

Seat occupied

Buckled

Buckled

Off

Unbuckled

On

Seat unoccupied

—

Off

—

Unbuckled

On

DIAGNOSIS SYSTEM (AIR BAG)

SRC-13

< SYSTEM DESCRIPTION >

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DIAGNOSIS SYSTEM (AIR BAG)

Diagnosis Description

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CAUTION:

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to do so in

this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harness con-

nectors.

• Do not attempt to repair, splice or modify SRS wiring harnesses. If a harness is damaged, replace it

with a new one.

• Keep ground connections clean.

HOW TO PERFORM TROUBLE DIAGNOSES FOR QUICK AND ACCURATE REPAIR

1. Obtain information about the symptom.

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WHAT - vehicle model

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WHEN - date, frequencies

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WHERE - road conditions

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HOW - operating conditions, symptoms, passengers

2. Perform Preliminary Check.

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Battery

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Fuses

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Harness connections

DIAGNOSIS METHODS

SRS self-diagnosis results can be read by using the AIR BAG warning lamp or CONSULT.

The User Mode is for the customer (driver). This mode warns the driver of a system malfunction through the

the AIR BAG warning lamp.

The Diagnosis Mode is for the technician. This mode helps the technician locate the malfunctioning circuit or

part.

SRS Operation Check

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USER MODE

1. Turn the ignition switch from OFF to ON and check that the air bag warning lamp blinks.

2. Compare the blinking pattern with the examples in the table.

User Mode

Diagnosis Mode

Display type

AIR BAG warning lamp

X

X

ON/OFF

CONSULT

—

X

Monitoring

BF-1845D

SRC-14

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (AIR BAG)

Air bag warning lamp flashing pattern (User Mode)

Trouble Diagnosis with CONSULT

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1. Connect CONSULT.

2. DTC is displayed on SELF-DIAG RESULTS.

NOTE:

If a malfunction is not detected on SELF-DIAG RESULTS [CURRENT], but a malfunction is detected during

SRS Operation Check, the following cases may exist:

• SELF-DIAG [PAST] memory might not be erased. Refer to 

SRC-15, "SRS Final Check"

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• SRS system malfunctions intermittently. Refer to 

SRC-38, "Inspection Procedure"

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Warning lamp

SRS condition

Reference item

• No malfunction is detected.
• No further action is necessary.

—

The system is malfunctioning and 
needs to be repaired.

Refer to 

SRC-14, "Trouble Diagno-

sis with CONSULT"

 or 

SRC-15, 

"Trouble Diagnosis without CON-
SULT"

.

Zero point reset is incomplete

Refer to 

SRC-37, "ZERO POINT 

RESET : Special Repair Require-
ment"

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• Air bag is deployed.
• Seat belt pre-tensioner is deployed.

Refer to 

SR-5, "For Frontal Collision"

 

or 

SR-7, "For Side and Rollover Col-

lision"

.

• Air bag diagnosis sensor unit is mal-

functioning.

• Air bag power supply circuit is mal-

functioning.

• SRS air bag warning lamp circuit is 

malfunctioning.

Refer to 

SRC-92, "AIR BAG Warn-

ing Lamp Does Not Turn Off"

.

• Air bag diagnosis sensor unit is mal-

functioning.

• Air bag warning lamp circuit is mal-

functioning.

Refer to 

SRC-91, "AIR BAG Warn-

ing Lamp Does Not Turn On"

.

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