warning INFINITI QX56 2011 Factory Service Manual

DAS
WARNING BUZZER CIRCUITDAS-393
< DTC/CIRCUIT DIAGNOSIS > [LDW & LDP]
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WARNING BUZZER CIRCUIT
Component Function CheckINFOID:0000000006223831
1.CHECK WARNING BUZZER
1. Turn the ignition switch ON.
2. Select the active test item “LDP BU ZZER” of “ICC/ADAS” with CONSULT-III.
3. With operating the test item, check the operation.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Refer to DAS-393, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006223832
1.CHECK WARNING BUZZER POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the warning buzzer connector.
3. Turn ignition switch ON.
4. Check voltage between the warning buzzer harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the warning buzzer power supply circuit.
2.CHECK WARNING BUZZER GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between the warning buzzer harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the harnesses or connectors.
3.CHECK WARNING BUZZER SIGNAL CIRCUIT FOR OPEN
1. Disconnect the ADAS control unit connector.
2. Check continuity between the ADAS control uni t harness connector and warning buzzer harness connec-
tor.
Is the inspection result normal?
On : Warning buzzer is activated.
Off : Warning buzzer is not activated.
Te r m i n a l s Vo l ta g e
(Approx.)
(+) (
−)
Warning buzzer Ground
Connector Terminal
M94 1 Battery voltage
Warning buzzer GroundContinuity
Connector Terminal
M94 3 Existed
ADAS control unit Warning buzzer Continuity
Connector Terminal Connector Terminal
B61 12 M94 2 Existed
Revision: 2010 May2011 QX56

DAS-394
< DTC/CIRCUIT DIAGNOSIS >[LDW & LDP]
WARNING BUZZER CIRCUIT
YES >> GO TO 4.
NO >> Repair the harnesses or connectors.
4.CHECK WARNING BUZZER SIGNAL CIRCUIT FOR SHORT
Check continuity between the ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair the harnesses or connectors.
5.CHECK WARNING BUZZER OPERATION
1. Connect the warning buzzer connector.
2. Turn ignition switch ON.
3. Apply ground to warning buzzer terminal 2.
4. Check condition of the warning buzzer.
Does warning buzzer sound?
YES >> Replace the ADAS control unit.
NO >> Replace the warning buzzer.
ADAS control unit
GroundContinuity
Connector Terminal
M61 12 Not existed
Revision: 2010 May2011 QX56

DAS
LDW & LDP SYSTEM SYMPTOMSDAS-395
< SYMPTOM DIAGNOSIS > [LDW & LDP]
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SYMPTOM DIAGNOSIS
LDW & LDP SYSTEM SYMPTOMS
Symptom TableINFOID:0000000006223833
NOTE:
For the operational conditions of Lane Departure Warn ing (LDW) and Lane Departure Prevention (LDP), refer
to the following descriptions.
LDW: DAS-277, "
LANE DEPARTURE WARNING (LDW ) SYSTEM : System Description"
LDP: DAS-280, "LANE DEPARTURE PREVENTION (L DP) SYSTEM : System Description"
Symptom Possible cause Inspection item/Reference page
Indicator/warning lamps do not
illuminate when ignition switch
OFF ⇒ ON Lane departure warning
lamp (Yellow) does not illu-
minate.
 Combination meter
 ADAS control unit Lane departure warning lamp
does not turned ON
Refer to
DAS-397, "
Description"
LDP ON indicator lamp
(Green) does not illuminate.  Combination meter
 ADAS control unit LDP ON indicator lamp does not
turned ON
Refer to
DAS-398, "
Description"
Warning systems ON indica-
tor does not illuminate.  Harness between ADAS
control unit and warning sys-
tems switch
 Warning systems switch
 ADAS control unit Warning systems ON indicator
circuit
Refer to
DAS-391, "
Component
Function Check"
Lane departure warning
lamp (Yellow) and LDP ON
indicator lamp (Green) does
not illuminate.  Combination meter
 ADAS control unit  Lane departure warning lamp
does not turned ON
Refer to DAS-397, "Descrip-
tion"
 LDP ON indicator lamp does
not turned ON
Refer to DAS-398, "
Descrip-
tion"
All of indicator/warning
lamps does not illuminate;
 Lane departure warning
lamp (Yellow)
LDP ON indicator lamp (Green)
 Warning systems ON indi- cator  Power supply and ground cir-
cuit of ADAS control unit
 ADAS control unit Power supply and ground circuit
of ADAS control unit
Refer to
DAS-387, "
ADAS CON-
TROL UNIT : Diagnosis Proce-
dure"
LDW system is not activated.
(Indicator/warning lamps illumi-
nate when ignition switch OFF
⇒ ON) Warning systems ON indica-
tor is not turned ON
⇔ OFF
when operating warning
systems switch  Harness between ADAS
control unit and warning sys-
tems switch
 Harness between warning systems switch and ground
 Warning systems switch
 ADAS control unit Warning systems switch circuit
Refer to
DAS-389, "
Component
Function Check"
Warning buzzer is not
sounding.
(Lane departure warning
lamp is activated.)  Harness between the IPDM
E/R and warning buzzer
 Harness between ADAS control unit and warning
buzzer
 Harness between warning buzzer and ground
 Warning buzzer
 ADAS control unit Warning buzzer circuit
Refer to
DAS-393, "
Component
Function Check"
Revision: 2010 May2011 QX56

DAS-396
< SYMPTOM DIAGNOSIS >[LDW & LDP]
LDW & LDP SYSTEM SYMPTOMS
LDP system is not activated.
(LDW system is functioning nor-
mally)Indicator lamp is not turned
ON
⇔ OFF when operating
dynamic driver assistance
switch  Dynamic driver assistance
switch
 Combination meter
 ADAS control unit
 AV control unit  Dynamic driver assistance
switch (ICC steering switch)
Refer to DAS-354, "
Compo-
nent Inspection"
 LDP system setting can not be
turned ON/OFF on the naviga-
tion screen
Refer to DAS-400, "
Descrip-
tion"
Warning is functioning but
yawing is not functioning. — Cause of auto-cancel 2
Refer to DAS-291
 Normal operating condition
Refer to DAS-401
Warning functions are not timely
(Example)
 Does not function when driving on lane markers
 Functions when driving in a lane
 Functions in a different position from the actual position.  Camera aiming adjustment
 Lane camera unit
 ADAS control unit
Camera aiming adjustment
DAS-340, "
Description"
Functions when changing the course in direction of the turn sig-
nal Turn indicator signal (CAN)
BCM
 ADAS control unitSystem operates even when us-
ing turn signal
Refer to
DAS-399, "
Description"
Symptom Possible cause Inspection item/Reference page
Revision: 2010 May2011 QX56

DAS
LANE DEPARTURE WARNING LAMP DOES NOT TURNED ONDAS-397
< SYMPTOM DIAGNOSIS > [LDW & LDP]
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LANE DEPARTURE WARNING LAMP DOES NOT TURNED ON
DescriptionINFOID:0000000006223834
The lane departure warning lamp in the combination meter does not turn ON when turning on the ignition
switch
Diagnosis ProcedureINFOID:0000000006223835
1.CHECK LANE DEPARTURE WARNING LAMP
1. Check that “LANE DEPARTURE W/L” operate normally in “ACTIVE TEST” of “ICC/ADAS”.
2. Operate the test items to check that the lane departure warning lamp blinks
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 2.
2.CHECK COMBINATION METER
Turn the ignition switch from OFF to ON to check that “LANE W/L” included in “DATA MONITOR” in “METER/
M&A” operates normally.
Is the inspection result normal?
YES >> Replace the combination meter. Refer to MWI-85, "Removal and Installation".
NO >> GO TO 3.
3.CHECK SELF-DIAGNOSIS RESULTS OF COMBINATION METER
1. Perform “All DTC R eading” with CONSULT-III.
2. Check if the DTC is detected in self-di agnosis results of “METER/M&A”. Refer to MWI-43, "
DTC Index".
Is any DTC detected?
YES >> Repair or replace malfunctioning parts.
NO >> GO TO 4.
4.CHECK SELF-DIAGNOSIS RESU LTS OF ADAS CONTROL UNIT
Check if the DTC is detected in self-d iagnosis results of “ICC/ADAS” Refer to DAS-310, "
DTC Index".
Is any DTC detected?
YES >> Repair or replace malfunctioning parts.
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
Revision: 2010 May2011 QX56

DAS
THE SYSTEM OPERATES EVEN WHEN USING TURN SIGNAL
DAS-399
< SYMPTOM DIAGNOSIS > [LDW & LDP]
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THE SYSTEM OPERATES EVEN WH EN USING TURN SIGNAL
DescriptionINFOID:0000000006223838
The warning of Lane Departure Warning (LDW) and Lane Departure Prevention (LDP) and the yaw moment
control are activated during the use of a turn signal.
NOTE:
For the operational conditions of Lane Departure Warn ing (LDW) and Lane Departure Prevention (LDP), refer
to the following descriptions.
LDW: DAS-277, "
LANE DEPARTURE WARNING (LDW ) SYSTEM : System Description"
LDP: DAS-280, "LANE DEPARTURE PREVENTION (L DP) SYSTEM : System Description"
Diagnosis ProcedureINFOID:0000000006223839
1.CHECK TURN SIGNAL OPERATION
Check that both right and left turn signals are normal.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace malfunctioning parts. Refer to EXL-113, "
Symptom Table".
2.CHECK SELF-DIAGNOSIS RESULTS
1. Perform “All DTC R eading” with CONSULT-III.
2. Check if the DTC is detected in self-d iagnosis results of “ICC/ADAS” Refer to DAS-310, "
DTC Index".
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and re pair or replace the malfunctioning parts.
NO >> Replace ADAS control unit. Refer to DAS-63, "
Removal and Installation".
Revision: 2010 May2011 QX56

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