Nissan Pathfinder (2005 year). Instruction — part 414
PRECAUTIONS
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SRS
2005 Pathfinder
PRECAUTIONS
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Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EHS0012C
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 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 per-
formed by an authorized NISSAN/INFINITI dealer.
●
Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
●
Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Instruction. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
EHS0012D
●
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Instruction.
●
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 the air bag diagnosis sensor unit for cracks, deformi-
ties 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
EHS0012E
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Replace control unit and passenger front seat cushion as an assembly.
Trouble Diagnosis Precaution
EHS0012F
When you read wiring diagrams, refer to the following:
●
GI-15, "How to Read Wiring Diagrams"
in GI section
●
PG-4, "POWER SUPPLY ROUTING CIRCUIT"
in PG section
When you perform trouble diagnosis, refer to the following:
●
GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES"
in GI section
●
GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident"
in GI section
Check for any service bulletins before servicing the vehicle.
SRS-4
PREPARATION
2005 Pathfinder
PREPARATION
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Special Service Tools
EHS0012G
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name
Description
KV99105300
(J-41246)
Air bag module bracket
Anchoring air bag module
—
(J-39401-100)
Passenger air bag module bracket
Anchoring passenger air bag module
KV99106400
(J-38381)
Deployment tool
Disposing of air bag modules and front seat
belt pre-tensioners
—
(J-38381-80)
Deployment tool adapter for front driv-
er air bag module, passenger air bag
module, side curtain air bag module
and front seat belt pre-tensioner
Connecting between the deployment tool and
front driver air bag module, passenger air bag
module, side curtain air bag module and front
seat belt pre-tensioner
—
(J-38381-65)
Deployment tool adapter for front pas-
senger air bag module (for service kit
level)
Connecting between the deployment tool and
front passenger air bag module
S-NT354
LHIA0045E
S-NT357
WHIA0089E
SHIA0173E
PREPARATION
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Commercial Service Tools
EHS0012H
KV99109000
(J-44230)
Deployment tool adapter for front side
air bag module
Connecting between the deployment tool and
front side air bag module
—
(J-42057-UPD)
Air bag key set
Part of kit (J-42057)
Removing and installing air bag lock
Tool number
(Kent-Moore No.)
Tool name
Description
ZZA1190D
LRS210
(Kent-Moore No.)
Tool name
Description
(J-1859A)
Steering wheel puller
Removing steering wheel
(J-42578)
Steering wheel puller legs
Removing steering wheel
LHIA0043E
LHIA0044E
SRS-6
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
2005 Pathfinder
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
PFP:28556
SRS Configuration
EHS0012I
The air bag deploys if the air bag diagnosis sensor unit is activated while the ignition switch is in the ON or
START position.
The collision modes for which supplemental restraint systems are activated are different among the SRS sys-
tems. For example, the driver air bag module, front passenger air bag module and front seat belt pre-tension-
ers are activated in a frontal collision but not in a side collision.
SRS configurations for some collision modes are as follows:
WHIA0194E
SRS configuration
Frontal collision
Left side collision
Right side colli-
sion
Rollover
Driver air bag module
x
—
—
—
Front passenger air bag module
x
—
—
—
Front LH seat belt pre-tensioner
x
—
—
x
Front RH seat belt pre-tensioner
x
—
—
x
Front LH side air bag module
—
x
—
—
Front RH side air bag module
—
—
x
—
LH side front curtain air bag module
—
x
—
x
LH side rear curtain air bag module
—
x
—
x
RH side front curtain air bag module
—
—
x
x
RH side rear curtain air bag module
—
—
x
x
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
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Front Seat Belt Pre-tensioner with Load Limiter
EHS0012J
The seat belt pre-tensioner system with load limiter is installed for
both the driver's seat and the front passenger's seat. It operates
simultaneously with the SRS air bag system in the event of a frontal
collision with an impact exceeding a specified level.
When the frontal collision with an impact exceeding a specified level
occurs, seat belt slack resulting from clothing or other factors is
immediately taken up by the pre-tensioner. Vehicle passengers are
securely restrained.
When passengers in a vehicle are thrown forward in a collision and
the restraining force of the seat belt exceeds a specified level, the
load limiter permits the specified extension of the seat belt by the
twisting of the ELR shaft, and a relaxation of the chest-area seat belt
web tension while maintaining force.
Front Side Air Bag
EHS0012K
Front side air bag modules are built into the front seatback assemblies.
Vehicles with side air bags are equipped with labels as shown.
Side Curtain Air Bag
EHS0012L
Side curtain air bag modules are located above the vehicle headlining.
Vehicles with side curtain air bags are equipped with labels as
shown.
WHIA0225E
WHIA0008E
WHIA0041E
SRS-8
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
2005 Pathfinder
Occupant Classification System
EHS0012M
The occupant classification system identifies different size occupants, out of position occupants, and detects if
child seat is present in the front passenger seat. The occupant classification system receives inputs from the
occupant classification system sensor (located inside the passenger seat cushion assembly) and belt tension
sensor (part of the passenger front seat belt assembly and located at the belt anchor location). Depending on
classification of passenger, the occupant classification system sends a signal to the air bag diagnosis sensor
unit. The air bag diagnosis sensor unit uses this signal to determine deployment or non deployment of the pas-
senger front air bag in the event of a collision. Depending on the signal received, the air bag diagnosis sensor
unit can disable the passenger front air bag completely. If this occurs the air bag diagnosis sensor unit will turn
on the PASS AIR BAG OFF indicator.
Direct-connect SRS Component Connectors
EHS0012N
The following SRS components use direct-connect style harness connectors.
●
Driver air bag module
●
Front passenger air bag module
●
LH side front curtain air bag module
●
LH side rear curtain air bag module
●
RH side front curtain air bag module
●
RH side rear curtain air bag module
●
Front LH seat belt pre-tensioner
●
Front RH seat belt pre-tensioner
Always pull up to release black locking tab prior to removing connector from SRS component.
Always push down to lock black locking tab after installing connector
to SRS component. When locked, the black locking tab is level with
the connector housing.
WHIA0195E
WHIA0103E
TROUBLE DIAGNOSIS
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TROUBLE DIAGNOSIS
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Trouble Diagnosis Introduction
EHS0012O
CAUTION:
●
Do not use electrical test equipment on any circuit related to the SRS unless instructed to do so in
this Service Instruction. 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.
DIAGNOSIS FUNCTION
The SRS self-diagnosis results can be read by using “AIR BAG” warning lamp and/or CONSULT-II.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system mal-
function 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-II are as follows:
HOW TO PERFORM TROUBLE DIAGNOSES 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
.)
●
Fuse (Refer to
SRS-13, "Wiring Diagram — SRS —"
.)
●
System component-to-harness connections
User mode
Diagnosis mode
Display type
“AIR BAG” warning lamp
X
X
ON-OFF operation
CONSULT-II
—
X
Monitoring
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