2011 INFINITI QX56 Factory Service Manual

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Page 1233 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS-268
< SYMPTOM DIAGNOSIS >[FCW]
FORWARD COLLISION WARNING SYSTEM SYMPTOMS
SYMPTOM DIAGNOSIS
FORWARD COLLISION WA
RNING SYSTEM SYMPTOMS
Symptom TableINFOID:0000000006223692
CAUTION:
Perform the sel

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INFINITI QX56 2011 Factory Service Manual
DAS
FCW SYSTEM IS NOT ACTIVATEDDAS-269
< SYMPTOM DIAGNOSIS > [FCW]
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FCW SYSTEM IS NOT ACTIVATED
DescriptionINFOID:0000000006223693
FCW system does not operate by pre ssin

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INFINITI QX56 2011 Factory Service Manual
DAS-270
< SYMPTOM DIAGNOSIS >[FCW]
NORMAL OPERATING CONDITION
NORMAL OPERATING CONDITION
DescriptionINFOID:0000000006223695
PRECAUTIONS FOR FORWARD COLLISION WARNING (FCW)
FCW system is intended to

DAS-270
< SYMPTOM DIAGNOSIS >[FCW]
NORMAL OPERATING CONDITION
NORMAL OPERATING CONDITION
DescriptionINFOID:0000000006223695
PRECAUTIONS FOR FORWARD COLLISION WARNING (FCW)
FCW system is intended to warn the driver before a col
lision but will not avoid a collision. It is the drive's
responsibility to stay alert, drive safely and be in control of the vehicle at all times.
As there is a performance limit, the FCW system may not provide a warning in certain conditions.
The FCW system will not detect the following objects.
- Pedestrians, animals, or obstacles in the roadway.
- Oncoming vehicles in the same lane
FCW system will not detect under the following conditions.
- When the sensor gets dirty, it is impossibl e to detect the distance from the vehicle ahead.
- When driving into a strong light (i.e. sunlight)
The sensor generally detects signals returned from t he reflectors on a vehicle ahead. Therefore, the FCW
system may not warn properly under the following conditions:
- When the reflectors of the vehicle ahead are positioned hi gh or close to each other (including a small vehicle
such as motorcycles).
- When the sensor gets dirty or it is impossible to detect the distance to the vehicle ahead.
- When the reflectors on the vehicle ahead is missing, damaged or covered.
- When the reflector of the vehicle ahead is covered with dirt, snow or road spray.
- When visibility is low (such as rain, fog, snow, etc.).
- When snow or road spray from traveling vehicles are splashed.
- When dense exhaust or other smoke (black smoke) from vehicles reduces the visibility of the sensor.
- When excessively heavy baggage is loaded in the rear seat or the trunk room of own vehicle.
- When abruptly accelerating or decelerating.
- On steep downhill or roads with sharp curves.
- When there is a highly reflective object near the vehicle ahead. i.e.) very close to other vehicle, signboard, etc.
- When own vehicle are towing a trailer.
Depending on certain road conditions (curved, beginning of a curve), vehicle conditions (steering position,
vehicle position), or preceding vehicl e's conditions (position in lane, etc.), the FCW system may not function
properly. The FCW system may detect highly reflective obj ects such as reflectors, signs, white markers, and
other stationary objects on the road or near the traveling lane, and provide unnecessary warning.
The FCW system may not function in offset conditions.
The FCW system may not functi on when the distance to the vehicle ahead is extremely close.
The FCW system is designed to automatically check the s ensor's functionality. If the sensor is covered with
ice, a transparent or translucent plastic bag, etc., the system may not detect them. In these instances the
FCW system may not be able to warn properly. Be sure to check and clean the sensor regularly.
Excessive noise will interfere with the warning chime sound, and the chime may not be heard.
A sudden appearance of the vehicle in front (i.e.: w hen a vehicle abruptly cuts in) may not be detected and
the system may not warn soon enough.
The FCW system will be canceled autom atically with a chime sound and the IBA OFF indicator light will illu-
minate under the following conditions:
- When the sensor window is dirty
- When the FCW system malfunctions
Revision: 2010 May2011 QX56

Page 1236 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS
WARNING SYSTEMS SWITCHDAS-271
< REMOVAL AND INSTALLATION > [FCW]
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REMOVAL AND INSTALLATION
WARNING SYSTEMS SWITCH
Removal and InstallationINFOID:0000000006223696
REMO

Page 1237 of 5598

INFINITI QX56 2011 Factory Service Manual
DAS-272
< PRECAUTION >[LDW & LDP]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint S
ystem (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006223697
The Supplemen

DAS-272
< PRECAUTION >[LDW & LDP]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint S
ystem (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006223697
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty 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 w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISS AN/INFINITI dealer.
Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.
When using air or electric power tools or hammers , always switch the ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precautions For Harness RepairINFOID:0000000006223698
ITS communication uses a twisted pair line. Be careful when repairing it.
Solder the repaired area and wrap tape around the soldered area.
NOTE:
A fray of twisted lines must be within 110 mm (4.33 in).
SKIB8766E
Revision: 2010 May2011 QX56

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INFINITI QX56 2011 Factory Service Manual
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PRECAUTIONSDAS-273
< PRECAUTION > [LDW & LDP]
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Bypass connection is never allowed at the repaired area. NOTE:
Bypass connection may cause ITS communication error. T

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INFINITI QX56 2011 Factory Service Manual
DAS-274
< SYSTEM DESCRIPTION >[LDW & LDP]
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
LANE DEPARTURE WARNING (LDW) SYSTEM
LANE DEPARTURE WARNING (LDW) S
YSTEM : Component Parts Location
INFOID

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INFINITI QX56 2011 Factory Service Manual
DAS
COMPONENT PARTSDAS-275
< SYSTEM DESCRIPTION > [LDW & LDP]
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LANE DEPARTURE PREVENTION (LDP) SYSTEM
LANE DEPARTURE PREVENTION (LDP) SYSTEM : Component Parts Location
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