2011 INFINITI QX56 warning

DAS
WARNING SYSTEMS SWITCHDAS-271
< REMOVAL AND INSTALLATION > [FCW]
C
D
E
F
G H
I
J
K L
M B
N P A
REMOVAL AND INSTALLATION
WARNING SYSTEMS SWITCH
Removal and InstallationINFOID:0000000006223696
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-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

DAS
PRECAUTIONSDAS-273
< PRECAUTION > [LDW & LDP]
C
D
E
F
G H
I
J
K L
M B
N P A
 Bypass connection is never allowed at the repaired area. NOTE:
Bypass connection may cause ITS communication error. The
spliced wire becomes separated and t he characteristics of twisted
line are lost.
Precaution for LDW/LDP System ServiceINFOID:0000000006223699
WARNING:
Be careful of traffic conditions and safety aro und the vehicle when performing road test.
CAUTION:
 Never use the LDP system when driving with free rollers or a chassis dynamometer.
 Never perform the active test while driving.
 Never disassemble and remodel the lane camera unit.
 Do not use the lane camera unit that is removed from the vehicle.
 Never change LDW initial state ON ⇒ OFF without the con sent of the customer.
SKIB8767E
Revision: 2010 May2011 QX56

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:0000000006223700
LANE DEPARTURE WARNING (LDW) SYSTEM : Component DescriptionINFOID:0000000006223701
1. Lane camera unit 2. Lane departure warning lamp (Yel-
low)
(On the combination meter)3. Warning systems switch
4. Warning systems ON indicator 5. ABS actuator and electric unit (con-
trol unit)
Refer to BRC-10, "
Component Parts
Location"
6. BCM
Refer to BCS-4, "
BODY CONTROL
SYSTEM : Component Parts Loca-
tion"
7. Warning buzzer 8. ADAS control unit
Refer to DAS-13, "
Component Parts
Location"
A. Front of the map lamp B. Instrument lower panel (LH) C. Behind of instrument lower panel
(LH)
JSOIA0367ZZ
Component Description
ADAS control unit  Judges the lane departure depending on the lane detection result and each signals
 Controls the warning buzzer and the warning systems ON indicator
 Transmits lane departure warning lamp signal to combination meter via CAN communica-
tion
Lane camera unit  Detects the lane marker in travel lane
 Transmits the detected lane condition signal to ADAS control unit via ITS communication
ABS actuator and electric unit (con-
trol unit) Transmits the vehicle speed signal (wheel speed) to ADAS control unit via CAN communica-
tion
Revision: 2010 May2011 QX56

DAS
COMPONENT PARTSDAS-275
< SYSTEM DESCRIPTION > [LDW & LDP]
C
D
E
F
G H
I
J
K L
M B
N P A
LANE DEPARTURE PREVENTION (LDP) SYSTEM
LANE DEPARTURE PREVENTION (LDP) SYSTEM : Component Parts Location
INFOID:0000000006223702
Warning systems switch Inputs the warning systems switch signal to ADAS control unit
Warning systems ON indicator
(On the warning systems switch) Turns on the warning systems ON indicator, according to an warning systems ON indicator
signal received from the ADAS control unit
Warning buzzer Activates the warning buzzer, according to a warning buzzer signal received from the ADAS
control unit
Combination meter Turns the lane departure warning lamp ON/OFF according to the signals from ADAS control
unit via CAN communication
BCM Transmits the turn indicator signal to ADAS control unit via CAN communication Component Description
1. Lane camera unit 2. Dynamic driver assistance switch
(On the ICC steering switch)3.  Lane departure warning lamp (Yel-
low)
 LDP ON indicator (Green)
(On the combination meter)
4. Transfer control unit Refer to DLN-10, "
Component Parts
Location"
5. AV control unit
Refer to AV- 9 , "
Component Parts Lo-
cation"
6. ECM
Refer to EC-16, "
Component Parts
Location"
7. TCM
Refer to TM-10, "
A/T CONTROL
SYSTEM : Component Parts Loca-
tion"
8. ABS actuator and electric unit (con-
trol unit)
Refer to BRC-10, "
Component Parts
Location"
9. BCM
Refer to BCS-4, "
BODY CONTROL
SYSTEM : Compon ent Parts Loca-
tion"
10. Warning buzzer 11. Steering angle sensor
Refer to BRC-10, "
Component Parts
Location"
12. ADAS control unit
Refer to DAS-13, "
Component Parts
Location"
A. Front of map lamp B. Behind instrument lower panel (LH)
JSOIA0368ZZ
Revision: 2010 May2011 QX56

DAS-276
< SYSTEM DESCRIPTION >[LDW & LDP]
COMPONENT PARTS
LANE DEPARTURE PREVENTION (LDP ) SYSTEM : Component Description
INFOID:0000000006223703
Component Description
ADAS control unit  Judges lane departure based on each signal and calculates yaw moment necessary to generate
force toward the direction to recover the vehicle from the lane departure
 Outputs the warning buzzer signal to the warning buzzer
 Transmits a target yaw moment signal to the ABS actuator and electric unit (control unit) via CAN communication
 Transmits the lane departure warning lamp signal and LDP ON indicator lamp signal to combina- tion meter via CAN communication
Lane camera unit  Detects the lane marker in travel lane
 Transmits the detected lane condition signal to ADAS control unit via ITS communication
ABS actuator and electric unit
(control unit)  Transmits the vehicle speed signal (wheel speed) to ADAS control unit via CAN communication
 Transmits the yaw rate signal and side G sensor signal to ADAS control unit via CAN communi-
cation
 Receives a target yaw moment signal from the ADAS control unit via CAN communication and
controls brake pressure of four wheels, respectively
Warning buzzer Activates the warning buzzer, according to a warning buzzer signal received from the ADAS control
unit
Dynamic driver assistance
switch
(On the ICC steering switch) ECM receives an ICC steering switch (dynamic driver assistance switch) signal and transmits the
signal to ADAS control unit via CAN communication
Combination meter Turns on the following indicator/warning lamp, according to a signal received for the ADAS control
unit via CAN communication
 LDP ON indicato
r lamp (Green)
 Lane departure warning lamp (Yellow)
BCM Transmits the turn indicator signal to ADAS control unit via CAN communication
ECM Transmits the accelerator pedal position signal, engine speed signal and ICC steering switch signal
(dynamic driver assistance switch signal) to ADAS control unit via CAN communication
Steering angle sensor Transmits the steering angle sensor signal to ADAS control unit via CAN communication
TCM Transmits the output shaft revolution signal, input speed signal, current gear position signal and shift
position signal to ADAS control unit via CAN communication
Transfer control unit Transmits the current 4WD mode signal to ADAS control unit via CAN communication
AV control unit Transmits the system selection signal to ADAS control unit via CAN communication
Revision: 2010 May2011 QX56

DAS
SYSTEM
DAS-277
< SYSTEM DESCRIPTION >[LDW & LDP]
C
D
E
F
G H
I
J
K L
M B
N P A
SYSTEM
LANE DEPARTURE WARNING (LDW) SYSTEM
LANE DEPARTURE WARNING (LDW ) SYSTEM : System DescriptionINFOID:0000000006223704
SYSTEM DIAGRAM
ADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEM
Input Signal Item
Output Signal Item
FUNCTION DESCRIPTION
 Lane Departure Warning (LDW) system provides a l ane departure warning function when the vehicle is
driven at speeds of approximately 70 km/h (45 MPH) or more.
JSOIA0285GB
Transmit unit Signal name Description
ABS actuator
and electric unit
(control unit) CAN com-
munica-
tion
Vehicle speed signal (ABS) Receives
wheel speeds of four wheels
BCM CAN com-
munica-
tionTurn indicator signal
Receives an operational state of the turn signal lamp
and the hazard lamp
Lane camera
unit ITS com-
munica-
tion
Detected lane condition signal Receives detection results of lane marker
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 commu-
nication
Lane departure warning lamp signal Transmits a lane departure warning lamp signal to
turn ON the lane departure warning lamp
Lane camera
unit ITS commu-
nicationVehicle speed signal
Transmits a vehicle speed calculated by the ADAS
control unit
Turn indicator signal Transmits a turn indicator signal received from BCM
Warning buzz-
er Warning buzzer signal Activates the warning buzzer
Warning sys-
tems ON indi-
cator Warning systems ON indicator signal Turns ON the warning systems ON indicator
Revision: 2010 May2011 QX56

DAS-278
< SYSTEM DESCRIPTION >[LDW & LDP]
SYSTEM
 When the vehicle approaches either the left or the ri
ght side of the traveling lane, a warning will sound and
the lane departure warning lamp (yellow) on the combination meter will blink to alert the driver.
 The warning does not occur during turn signal operation (Lane change side).
 The warning function will stop when the vehicle returns inside of the lane markers.
EXAMPLE
When the vehicle approaches the right lane marker, the driv er is alerted by the buzzer and the blinking of lane
departure warning lamp (yellow).
OPERATION DESCRIPTION
 When the system is turned ON by operating the warning systems switch, ADAS control unit turns ON the
warning systems ON indicator.
 Lane camera unit monitors lane markers of the traveling lane. It transmits the detected lane condition signal
to ADAS control unit via ITS communication.
 When judging from a lane marker detection signal that the vehicle is approaching the lane marker, the ADAS
control unit controls the following item to alert the driver.
- Activates warning buzzer
- ADAS control unit transmits a lane departure warning lamp signal to combination meter via CAN communi- cation and turns ON/OFF the lane departure warning lamp (yellow).
OPERATING CONDITION
 Warning systems ON indicator: ON
 Vehicle speed: approximately 70 km/h (45 MPH) or more
 Turn indicator signal: After 2 seconds or more from turned OFF
NOTE:
 After the operating conditions of warning are satisfi ed, the warning continues until the vehicle speed reaches
approximately 60 km/h (40 MPH)
 LDP ON indicator lamp is OFF
 The LDW system may not function proper ly, depending on the situation. Refer to DAS-288, "
Precautions for
Lane Departure Warning/Lane Departure Prevention"
Bulb Check Action and Fail-safe Indication
JPOIA0014GB
Vehicle condition/ Driver's operation Warning sys-
tems ON indi- cator Indication on the combination meter
Ignition switch
OFF ⇒ ON
(Bulb check) Approx. 5 sec.
ON
*
JPOIA0017GB
Revision: 2010 May2011 QX56