Infiniti EX35. Manual - part 1379

SRC-142

< SYMPTOM DIAGNOSIS >

SRS AIR BAG WARNING LAMP DOES NOT TURN OFF

SYMPTOM DIAGNOSIS

SRS AIR BAG WARNING LAMP DOES NOT TURN OFF

Diagnosis Procedure

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1.

CHECK FRONT AIR BAG MODULE

Check the deployment of front air bag module.

Is air bag module deployed?

YES

>> Refer to 

SR-4, "Removal and Installation"

 or 

SR-8, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK AIR BAG FUSE

Check the air bag fuse. Refer to 

PG-99, "Fuse and Fusible Link Arrangement"

.

Is 10A fuse [No.2, located in fuse block (J/B)] normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK AIR BAG FUSE AGAIN

Replace air bag fuse and turn ignition switch ON.

Did the air bag fuse blow again?

YES

>> Repair or replace main harness.

NO

>> INSPECTION END

4.

CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the screen of CONSULT-III.
Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace air bag diagnosis sensor unit. Refer to 

SR-16, "Removal and Installation"

.

5.

CHECK HARNESS CONNECTION

Check harness connection between air bag warning lamp and air bag diagnosis sensor unit.

Is the inspection result normal?

YES

>> Check the intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

NO

>> Replace wiring harness connector.

SRS AIR BAG WARNING LAMP DOES NOT TURN ON

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SRS AIR BAG WARNING LAMP DOES NOT TURN ON

Diagnosis Procedure

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1.

CHECK METER FUSE

Check the meter fuse. Refer to 

PG-99, "Fuse and Fusible Link Arrangement"

.

Is 10A fuse [No.4, located in fuse block (J/B)] normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK METER FUSE AGAIN

Replace 10A fuse [No.4, located in fuse block (J/B)] and turn ignition switch ON.
Did the meter fuse blow again?

YES

>> Repair or replace the related harness.

NO

>> INSPECTION END

3.

CHECK HARNESS CONNECTION

1.

Check harness connection between air bag diagnosis sensor unit and combination meter.

2.

Disconnect air bag diagnosis sensor unit connector and turn ignition switch ON.

Did air bag warning lamp turn ON?

YES

>> Replace air bag diagnosis sensor unit. Refer to 

SR-16, "Removal and Installation"

.

NO

>> Replace combination meter assembly. Refer to 

MWI-162, "Removal and Installation"

.

SRC-144

< SYMPTOM DIAGNOSIS >

PASSENGER SEAT BELT WARNING SYSTEM

PASSENGER SEAT BELT WARNING SYSTEM

Diagnosis Procedure

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1.

CHECK THE SYSTEM 1

Check the seat belt warning lamp function.
Seat belt warning lamp turns ON in the following conditions.
• Driver seat belt is fastened.
• Occupant is on passenger seat.
• Passenger seat belt is not fastened. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>>

Check the followings.

• Harness between air bag diagnosis sensor unit and combination meter.
• Seat belt buckle switch (passenger side) circuit.
• Seat belt buckle switch (passenger side).

If these are OK, replace air bag diagnosis sensor unit.

2.

CHECK THE SYSTEM 2

Check the seat belt warning lamp function.
Seat belt warning lamp turns OFF in the following conditions.
• Driver seat belt is fastened.
• Occupant is on passenger seat.
• Passenger seat belt is fastened.

Is the inspection result normal?

YES

>> System is OK.

NO

>>

Check the followings.

• Seat belt buckle switch (passenger side) circuit.
• Seat belt buckle switch (passenger side).

If these are OK, replace air bag diagnosis sensor unit.

PRECAUTIONS

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PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER"

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The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIRBAG” and “SEAT BELT” of this
Service Manual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIRBAG”.

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

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

Service

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• Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
• Before servicing the SRS, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3

minutes.
For approximately 3 minutes after the battery negative terminal is removed, it is still possible for the air bag
and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3
minutes have elapsed.

• Diagnosis sensor unit must always be installed with their arrow marks “

⇐

” pointing towards the front of the

vehicle for proper operation. Also check diagnosis sensor unit for cracks, deformities or rust before installa-
tion and replace as required.

• The spiral cable must be aligned in the neutral position since its rotations are limited. Do not turn steering

wheel and column after removal of steering gear.

• Handle air bag module carefully. Always place driver and front passenger air bag modules with the pad side

facing upward and seat mounted front side air bag module standing with the stud bolt side facing down.

• Conduct self-diagnosis to check entire SRS for proper function after replacing any components.
• After air bag inflates, the front instrument panel assembly should be replaced if damaged.
• Always replace instrument panel pad following front passenger air bag deployment.

Occupant Classification System Precaution

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• Replace occupant classification system control unit and passenger front seat cushion as an assembly.

Refer to 

SE-90, "Removal and Installation"

.