2004 INFINITI QX56 Factory Service Manual

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INFINITI QX56 2004 Factory Service Manual SRS-4
PREPARATION
Revision: August 20072004 QX56
PREPARATIONPFP:00002
Special Service ToolsEHS000W2
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated her

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INFINITI QX56 2004 Factory Service Manual SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)PFP:28556
SRS ConfigurationEHS000W4
The air bag deploys if the ai

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INFINITI QX56 2004 Factory Service Manual SRS-6
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Revision: August 20072004 QX56
Front Seat Belt Pre-tensioner with Load LimiterEHS000W5
The seat belt pre-tensioner system with load limiter is installed for
b

SRS-6
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Revision: August 20072004 QX56
Front Seat Belt Pre-tensioner with Load LimiterEHS000W5
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 BagEHS000W6
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 BagEHS000W7
Side curtain air bag modules are located above the vehicle headlining.
Vehicles with side curtain air bags are equipped with labels as
shown.
Occupant Classification System EHS000W8
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
SRS4 44
WHIA0008E
WHIA0041E

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INFINITI QX56 2004 Factory Service Manual SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
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unit can disable the passenger front air bag completely. If this occurs the air bag diagnosis sensor

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INFINITI QX56 2004 Factory Service Manual SRS-8
TROUBLE DIAGNOSIS
Revision: August 20072004 QX56
TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionEHS000WA
CAUTION:
Do not use electrical test equipment on any circuit related to the SR

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INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS
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WORK FLOW
*1:SRS-8*2:SRS-20*3:SRS-30
*4:SRS-37
WHIA0098E

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INFINITI QX56 2004 Factory Service Manual SRS-10
TROUBLE DIAGNOSIS
Revision: August 20072004 QX56
SRS Components Parts LocationEHS000WB
1. Side curtain air bag modules 2. Front RH side air bag module 3. Belt tension sensor
4. RH side air bag

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INFINITI QX56 2004 Factory Service Manual TROUBLE DIAGNOSIS
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SchematicEHS000WC
WHWA0178E

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