Nissan Pathfinder (2009 year). Manual - part 609

DIAGNOSIS SENSOR UNIT

SRC-79

< ECU DIAGNOSIS >

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Trouble Diagnosis without CONSULT-III

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WARNING LAMP FLASH CODE CHART

NOTE:
Follow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunction is
eliminated using air bag warning lamp each time repair is finished. If malfunction is still observed, proceed to
the next step. When malfunction is eliminated, further repair work is not required.    

SIDE COLLISION DETEC-

TION

B1210

Side and/or curtain air bag modules are 
deployed.

Refer to 

SR-19, "For Side and Rollover Collision"

.

ROLLOVER DETECTION

B1211

Curtain air bag module and seat belt 
pre-tensioner are deployed.

CONSULT-III name

DTC

DTC detecting condition

Repair order

SHIA0026E

WHIA0260E

WHIA0198E

WHIA0261E

2009 Pathfinder

SRC-80

< ECU DIAGNOSIS >

DIAGNOSIS SENSOR UNIT

WHIA0200E

WHIA0262E

WHIA0263E

WHIA0203E

WHIA0204E

2009 Pathfinder

DIAGNOSIS SENSOR UNIT

SRC-81

< ECU DIAGNOSIS >

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SRC

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WHIA0264E

WHIA0265E

WHIA0255E

WHIA0253E

WHIA0254E

2009 Pathfinder

SRC-82

< ECU DIAGNOSIS >

DIAGNOSIS SENSOR UNIT

WHIA0252E

WHIA0211E

WHIA0212E

2009 Pathfinder

SRS AIR BAG SYSTEM

SRC-83

< SYMPTOM DIAGNOSIS >

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SYMPTOM DIAGNOSIS

SRS AIR BAG SYSTEM

"AIR BAG" Warning Lamp Does Not Turn Off

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DIAGNOSTIC PROCEDURE 7

1.

CHECK CONDITION OF AIR BAG MODULE

Inspect for any deployed air bag modules or seat belt pre-tensioners.
Are any air bag modules or seat belt pre-tensioners deployed?

YES

>> Refer to 

SR-18, "For Frontal Collision"

 or 

SR-19, "For Side and Rollover Collision"

.

NO

>> GO TO 2

2.

CHECK THE AIR BAG FUSE

Check 10A fuse [No. 13, located in the fuse block (J/B)].
Is the fuse blown?

YES

>> GO TO 3

NO

>> GO TO 4

3.

CHECK AIR BAG FUSE AGAIN

Replace 10A fuse [No. 13, located in the fuse block (J/B)] and turn ignition switch ON.

Does the fuse blow again?

YES

>> Replace harness.

NO

>> Inspection End.

4.

CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Connect CONSULT-III.

Is “AIR BAG” displayed on CONSULT-III?

YES

>> GO TO 5

NO

>> Visually inspect the air bag diagnosis sensor unit harness connections. If the connections are OK,

replace the air bag diagnosis sensor unit. Refer to 

SR-16, "Removal and Installation"

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5.

CHECK HARNESS CONNECTION

Check for loose connections between the combination meter and the air bag diagnosis sensor unit.

Are there any loose connections?

YES

>> Properly connect the combination meter and air bag diagnosis sensor unit harness connectors. If

“AIR BAG” warning lamp still does not turn off, replace the wiring harness.

NO

>> Replace air bag diagnosis sensor unit.

"AIR BAG" Warning Lamp Does Not Turn On

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DIAGNOSTIC PROCEDURE 8

1.

CHECK METER FUSE

Check the 10A fuse [No. 14, located in the fuse block (J/B)] .

Is the fuse blown?

YES

>> GO TO 2

NO

>> GO TO 3

2.

REPLACE METER FUSE AND CHECK AGAIN

Replace 10A fuse [No. 14, located in the fuse block (J/B)] and turn ignition switch ON.

Does the fuse blow again?

YES

>> Replace harness.

NO

>> Inspection End.

3.

CHECK HARNESS CONNECTIONS BETWEEN AIR BAG DIAGNOSIS SENSOR UNIT AND COMBINA-

2009 Pathfinder

SRC-84

< SYMPTOM DIAGNOSIS >

SRS AIR BAG SYSTEM

TION METER

Inspect the harness and connectors between the air bag diagnosis sensor unit and the combination meter.

Do the harness or connectors have any visible damage?

YES

>> Replace harness.

NO

>> GO TO 4

4.

CHECK COMBINATION METER

Disconnect the air bag diagnosis sensor unit harness connectors and turn ignition switch ON.
Does “AIR BAG” warning lamp turn on?

YES

>> Replace the air bag diagnosis sensor unit.  Refer to 

SR-16, "Removal and Installation"

.

NO

>> Replace the combination meter.  Refer to 

MWI-94, "Removal and Installation"

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2009 Pathfinder

PASSENGER SEAT BELT WARNING SYSTEM

SRC-85

< SYMPTOM DIAGNOSIS >

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PASSENGER SEAT BELT WARNING SYSTEM

Seat Belt Warning System Does Not Function

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1.

SEAT BELT WARNING LIGHT

Turn ignition switch ON.
Does the seat belt warning lamp come ON?

YES

>> GO TO 2

NO

>> • Check 10A fuse [No. 14, located in the fuse block (J/B)].

• Check seat belt buckle switch LH.
• Check harness between combination meter and seat belt buckle switch LH.
• Check combination meter.  Refer to 

MWI-57, "Fail Safe"

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2.

SEAT BELT BUCKLE LH

Fasten the seat belt buckle LH.
Does the seat belt warning lamp go OFF?

YES

>> GO TO 3

NO

>> • Check seat belt buckle switch LH.

• Check harness between combination meter and seat belt buckle switch LH.

3.

OCCUPANT CLASSIFICATION SYSTEM

Have a helper sit in the passenger seat.
Does the seat belt warning lamp go ON?

YES

>> GO TO 4

NO

>> • Check occupant classification system.  Refer to 

SRC-10, "Occupant Classification System

(OCS)"

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• Check harness between occupant classification control unit and air bag diagnosis sensor unit.

4.

SEAT BELT BUCKLE RH

Fasten the seat belt buckle RH.

Does the seat belt warning lamp go OFF?

YES

>> System OK.

NO

>> • Check seat belt buckle switch RH.

• Check harness between seat belt buckle switch RH and air bag diagnosis sensor unit.
• Replace air bag diagnosis sensor unit.  Refer to 

SR-16, "Removal and Installation"

.

2009 Pathfinder

SRC-86

< PRECAUTION >

PRECAUTIONS

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 SR and SB section of this Service Man-
ual.

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 SR section.

• 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.

Precaution for SRS "AIR BAG" and "SEAT BELT PRE-TENSIONER" 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 both battery cables and wait at least 3 min-

utes.
For approximately 3 minutes after the cables are 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
passed.

• The air bag diagnosis sensor unit must always be installed with the arrow mark “

⇐

” pointing toward the front

of the vehicle for proper operation. Also check air bag diagnosis sensor unit for cracks, deformities or rust
before installation and replace as required.

• The spiral cable must be aligned with the neutral position since its rotations are limited. Do not attempt to

turn steering wheel or 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.

Occupant Classification System Precaution

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

2009 Pathfinder