2011 INFINITI QX56 warning

DAS
NORMAL OPERATING CONDITIONDAS-401
< SYMPTOM DIAGNOSIS > [LDW & LDP]
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NORMAL OPERATING CONDITION
DescriptionINFOID:0000000006223842
PRECAUTIONS FOR LANE DEPARTURE WARNING (LDW)
 LDW system is only a warning devic e to inform the driver of a potential unintended lane departure. It will not
steer the vehicle or prevent loss of c ontrol. It is the driver’s responsibility to stay alert, drive safely, keep the
vehicle in the traveling lane, and be in control of the vehicle at all times.
 LDW system will not operate at s peeds below approximately 70 km/h (45 MPH) or if it cannot detect lane
markers.
 Excessive noise will interfere with the warning chime sound, and the chime may not be heard.
 LDW system may not function properly under the following conditions:
- On roads where there are multiple parallel lane marker s; lane markers that are faded or not painted clearly;
yellow painted lane markers; non-standard lane markers; or lane markers covered with water, dirt or snow,
etc.
- On roads where the discontinued lane markers are still detectable.
- On roads where there are sharp curves.
- On roads where there are sharply contrasting objects, such as shadows, snow, water, wheel ruts, seams or
lines remaining after road repairs. (The LDW syst em could detect these items as lane markers.)
- On roads where the traveling lane merges or separates.
- When the vehicle's traveling direction does not align with the lane marker.
- When traveling close to other vehicle in front of the vehicle, which obstructs the lane camera unit detection
range.
- When rain, snow or dirt adheres to the windshield in front of the lane camera unit.
- When the headlights are not bright due to dirt on the lens or if the aiming is not adjusted properly.
- When strong light enters the lane camera unit. (For example, the light directly shines on the front of the vehi-
cle at sunrise or sunset.)
- When a sudden change in brightness occurs. (For exampl e, when the vehicle enters or exits a tunnel or
under a bridge.)
PRECAUTIONS FOR LANE DEPARTURE PREVENTION (LDP)
 LDP system will not steer the vehicle or prevent loss of control. It is the driver’s responsibility to stay alert,
drive safely, keep the vehicle in the traveling lane, and be in control of vehicle at all times.
 LDP system is primarily intended for use on well-devel oped freeways or highways. It may not detect the lane
markers in certain roads, weather or driving conditions.
 Using the LDP system under some conditions of road, lane marker or weather, or when driver change lanes
without using the turn signal could lead to an unexpect ed system operation. In such conditions, driver needs
to correct the vehicle's direction with dr iver's steering operation to avoid accidents.
 When the LDP system is operating, avoid excessive or sudden steering maneuvers. Otherwise, driver could
lose control of the vehicle.
 The LDP system will not operate at speeds below approximat ely 70 km/h (45 MPH) or if it cannot detect lane
markers.
 The LDP system may not function properly under the following conditions, and do not use the LDP system:
- During bad weather (rain, fog, snow, wind, etc.).
- When driving on slippery roads, such as on ice or snow, etc.
- When driving on winding or uneven roads.
- When there is a lane closure due to road repairs.
- When driving in a makeshift lane.
- When driving on roads where the lane width is too narrow.
- When driving with a tire that is not within normal tire c onditions (for example, tire wear, low tire pressure,
installation of spare tire, tire chains, non-standard wheels).
- When the vehicle is equipped with non-origi nal brake parts or suspension parts.
 Excessive noise will interfere with the warning chime sound, and the chime may not be heard.
 The functions of the LDP system (warning and brake control assist) may or may not operate properly under
the following conditions:
- On roads where there are multiple parallel lane marker s; lane markers that are faded or not painted clearly;
yellow painted lane markers; non-standard lane markers or lane markers covered with water, dirt or snow,
etc.
- On roads where discontinued lane markers are still detectable.
- On roads where there are sharp curves.
Revision: 2010 May2011 QX56

DAS-404
< REMOVAL AND INSTALLATION >[LDW & LDP]
WARNING SYSTEMS SWITCH
WARNING SYSTEMS SWITCH
Removal and InstallationINFOID:0000000006223844
REMOVAL
1. Remove the instrument lower panel (LH). Refer to
IP-14, "Removal and Installation".
2. Remove warning systems switch from instrument driver lower panel.
NOTE:
Warning systems switch and automatic back door switch are integrated.
INSTALLATION
Install in the reverse order of removal.
Revision: 2010 May2011 QX56

DAS-406
< REMOVAL AND INSTALLATION >[LDW & LDP]
WARNING BUZZER
WARNING BUZZER
Removal and InstallationINFOID:0000000006223846
REMOVAL
1. Remove the instrument lower panel (LH). Refer to
IP-14, "Removal and Installation".
2. Remove the screw.
3. Remove warning buzzer.
INSTALLATION
Install in the reverse order of removal.
Revision: 2010 May2011 QX56

DAS
PRECAUTIONSDAS-407
< PRECAUTION > [BSW]
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006223847
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 whether 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 inoper ative, which could increase the risk of personal injury or death in
the event of a collision that would result in air ba g inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
 Do not use electrical test equipm ent 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 minutes before performing any service.
Precaution for BSW System ServiceINFOID:0000000006223848
WARNING:
Be careful of traffic conditions and safety aro und the vehicle when performing road test.
CAUTION:
 Never perform the active test while driving.
 Never change BSW initial state ON ⇒ OFF without the consent of the customer.
TO KEEP THE BSW SYSTEM OPERATING PROPERLY, BE SURE TO OBSERVE THE FOLLOW-
ING ITEMS:
System Maintenance
The two side radar for the BSW system are located near the rear bumper.
 Always keep the area near the side radar clean.
 Do not attach stickers (including transparent material ), install accessories or apply additional paint near the
side radar.
 Do not strike or damage the area around the side radar.
Revision: 2010 May2011 QX56

DAS-408
< SYSTEM DESCRIPTION >[BSW]
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts LocationINFOID:0000000006223849
1. Side radar RH 2. BCM
Refer to BCS-4, "
BODY CONTROL
SYSTEM : Component Parts Loca-
tion"
3. TCM
Refer to TM-10, "
A/T CONTROL
SYSTEM : Component Parts Loca-
tion"
4. ABS actuator and el ectric unit (con-
trol unit)
Refer to BRC-10, "
Component Parts
Location"
5. ADAS control unit
Refer to DAS-13, "
Component Parts
Location"
6. Side radar LH
7. BSW indicator RH 8. BSW warning lamp (On the combination meter)9. BSW indicator LH
10. Warning systems switch 11. Warning systems ON indicator 12. Warning buzzer
JSOIA0370ZZ
Revision: 2010 May2011 QX56

DAS
COMPONENT PARTSDAS-409
< SYSTEM DESCRIPTION > [BSW]
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Component DescriptionINFOID:0000000006223850
A. Rear bumper removed condition B. Rear bumper removed condition C. Instrument lower panel (LH)
D. Behind of instrument lower panel (LH)
Component Description
ADAS control unit  Being connected with side radar (LH and RH) via ITS communication, receives vehicle detection
signal and transmits BSW indicator signal and BSW indicator dimmer signal to side radar
 Activates the warning buzzer and warning systems ON indicator
Side radar LH/ RH  Being connected with ADAS control unit via ITS communication, transmits vehicle detection sig-
nal
 Receives BSW indicator signal and BSW indicator dimmer signal from ADAS control unit and transmits an indicator operation signal to BSW indicator LH/RH
 RH side radar equips right/left switching signal circuit for identifying LH or RH because the parts
of side radar are common for right and left
BSW indicator LH/ RH Receives BSW indicator operation signal from side radar LH/RH and turns OFF, turns ON or blinks
ABS actuator and electric unit
(control unit) Transmits vehicle speed signal to ADAS control unit via CAN communication
Warning systems switch Inputs the switch signal to ADAS control unit
Warning systems ON indicator
(On the warning systems switch) Indicates BSW system status
Warning buzzer Receives buzzer signal from ADAS control unit and sounds buzzer.
Combination meter  Receives BSW warning lamp signal via CAN communication
 Turns the BSW warning lamp ON/OFF according to the signals from the ADAS control unit via
CAN communication
BCM  Transmits turn indicator signal to ADAS control unit via CAN communication
 Transmits dimmer signal to ADAS control unit via CAN communication
TCM Transmits the shift position signal to ADAS control unit via CAN communication
Revision: 2010 May2011 QX56

DAS-410
< SYSTEM DESCRIPTION >[BSW]
SYSTEM
SYSTEM
System DescriptionINFOID:0000000006223851
SYSTEM DIAGRAM
ADAS CONTROL UNIT INPU
T/OUTPUT SIGNAL ITEM
ADAS control unit receives signals via CAN communication. It also detects vehicle conditions that are neces-
sary for BSW control.
Input Signal Item
Output Signal Item
JSOIA0378GB
Transmit unit Signal name Description
TCM CAN communication Shift position signal Receives a selector lever position
ABS actuator
and electric unit
(control unit) CAN communication Vehic
le speed signal (ABS)Receives wheel speeds of four wheels
BCM CAN communication Turn indicator signal
Receives an operational state of the turn signal lamp and
the hazard lamp
Dimmer signal Receives ON/OFF state of dimmer signal
Side radar LH,
RH ITS communication Vehicle detection signal Receives vehicle detection condition of detection zone
Warning sys-
tems switch Warning systems switch signal Receives an ON/OFF state of the warning systems
switch
Reception unit Signal name Description
Combination
meter CAN communication BSW
warning lamp signalTransmits a BSW warning lamp signal to turn ON the
BSW warning lamp
Side radar LH,
RH ITS communication BSW indicator signal
Transmits a BSW indicator signal to turn ON the BSW
indicator
BSW indicator dimmer signal Transmits a BSW indicator dimmer signal to dimmer
BSW indicator
Vehicle speed signal Transmits a vehicle speed calculated by the ADAS
control unit
Warning sys-
tems ON indi-
cator Warning systems ON indicator signal Turns ON the warning systems ON indicator
Warning buzz-
er Warning buzzer signal Activates the warning buzzer
Revision: 2010 May2011 QX56

DAS
SYSTEM
DAS-411
< SYSTEM DESCRIPTION >[BSW]
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FUNCTION DESCRIPTION
 The BSW system can help alert the driver of ot her vehicles in adjacent lanes when changing lanes.
 The BSW system uses side radar in stalled near the rear bumper to detect vehicles in an adjacent lane.
 The side radar can detect vehicles on either side of v ehicle within the detection zone shown as illustrated.
 This detection zone starts from the outside mirror of vehicle and extends approximately 10 ft (3.0 m) behind
the rear bumper, and approximately 10 ft (3.0 m) sideways.
 The BSW system operates above appr oximately 32 km/h (20 MPH).
 If the side radar detects vehicles in the detection zone, the BSW indicator illuminates.
 If the driver then activates the turn signal, a buzzer will sound twice and the BSW indicator will blink. NOTE:
A buzzer sounds if the side radar have already detected vehicles when the driver activates the turn signal. If
a vehicle comes into the detection zone after the driver activates the turn signal, then only the BSW indicator
blinks and no buzzer sounds.
BSW SYSTEM OPERATION DESCRIPTION
 ADAS control unit enables BSW system.
 The ADAS control unit turns on the BSW system w hen the warning systems switch is turned ON.
 Side radar detects a vehicle in the adjacent lane, and transmits the vehicle detection signal to ADAS control
unit via ITS communication.
 ADAS control unit starts the control as follows, bas ed on a vehicle detection signal, turn signal and dimmer
signal transmitted from BCM via CAN communication:
- BSW indicator signal and BSW indicator dimmer signal transmission to side radar.
- Buzzer signal transmission to warning buzzer.
 Side radar transmits an indicator operation signal to the BSW indicator according to BSW indicator signal
and BSW indicator dimmer signal.
Operation Condition of BSW System
ADAS control unit performs the control when the following conditions are satisfied.
 When the warning systems switch in turned ON.
 When the vehicle drives at approximately 32 km/h (20 MPH) or more to the forward direction.
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Revision: 2010 May2011 QX56