ignition INFINITI QX56 2011 Factory Service Manual

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
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-398
< SYMPTOM DIAGNOSIS >[LDW & LDP]
LDP ON INDICATOR LAMP
DOES NOT TURNED ON
LDP ON INDICATOR LAMP DOES NOT TURNED ON
DescriptionINFOID:0000000006223836
The LDP ON indicator lamp in the combination meter does not turn ON when turning on the ignition switch
Diagnosis ProcedureINFOID:0000000006223837
1.CHECK LDP ON INDICATOR LAMP
1. Check that “LDP ON IND” operate no rmally in “ACTIVE TEST” of “ICC/ADAS”.
2. Check if the LDP ON indicator lamp illuminates when operates each test item.
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 t hat “LDP IND” 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 Reading” with CONSULT-III.
2. Check if the DTC is detected in self-d iagnosis 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-400
< SYMPTOM DIAGNOSIS >[LDW & LDP]
LDP SYSTEM SETTINGS CANNOT BE TURNED ON/OFF ON THE NAVIGATION
SCREEN
LDP SYSTEM SETTINGS CANNOT BE TU RNED ON/OFF ON THE NAVI-
GATION SCREEN
DescriptionINFOID:0000000006223840
 LDP system setting is not selectable on the navigation screen. NOTE:
When the ignition switch is in ACC posit ion, LDP system settings cannot be changed.
- “Lane Departure Prevention” is not indicated on the navigation screen.
- The switching between ON and OFF cannot be per formed by operating the navigation system.
- The item of “Lane Departure Prevention” on the navigation screen is not active.
 After turning ON the ignition switch or starting the engine, LDP settings of the navigation system cannot be
selected for several tens of sec onds under the following conditions:
- After replacing AV control unit.
- After erasing connection histor y of the navigation system.
- After erasing self-diagnosis results.
 The LDP system setting differs from the one set at the previous driving. NOTE:
Turn OFF the ignition switch and wait for 5 seconds or more.
Diagnosis ProcedureINFOID:0000000006223841
1.CHECK LDP SYSTEM SETTING
1. Start the engine.
2. Check that the LDP system settings is selectable on the navigation screen.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.PERFORM THE SELF-DIAGNOSIS
1. Perform “All DTC Reading” with CONSULT-III.
2. Check if the DTC is detected in self-diagnosis results of “ICC/ADAS”, “MULTI AV” and “METER/M&A”.
Refer to the following.
- ICC/ADAS: DAS-310, "
DTC Index"
- MULTI AV: AV-57, "DTC Index"
- METER/M&A: MWI-43, "DTC Index"
Is any DTC detected?
YES >> Repair or replace malfunctioning parts.
NO >> INSPECTION END
3.CHECK DATA MONITOR OF ADAS CONTROL UNIT
Check that “LDP SELECT” operates normally in “D ATA MONITOR” of “ICC/ADAS” with CONSULT-III.
Is the inspection result normal?
YES >> Refer to AV-28, "On Board Diagnosis Function".
NO >> GO TO 4.
4.CHECK MULTIFUNCTION SWITCH
Operate the multifunction switch to check that the audio, navigation system, and air conditioner operate prop-
erly.
Is the inspection result normal?
YES >> Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> Repair or replace malfunctioning parts.
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-412
< SYSTEM DESCRIPTION >[BSW]
SYSTEM
NOTE:
 After the operating conditions of warning are satisfi
ed, the warning continues until the vehicle speed reaches
approximately 29 km/h (18 MPH)
 The BSW system may not function properly, depending on the situation. Refer to DAS-417, "
Precautions for
Blind Spot Warning".
BULB CHECK ACTION AND FAIL-SAFE INDICATION
*: If BSW initial state is ON, warning systems ON indicator continues turned ON.
NOTE:
 The condition is seen regardless BSW system status (ON/OFF).
 If either of the side radars is in factor y-default mode, the BSW warning lamp blinks.
 New side radars are in factory-default mode.
Vehicle condition/Driver ′s operation BSW indicator Warning systems
ON indicator Indication on the combination meter
Ignition switch:
OFF ⇒ ON Approx. 2 sec. ON
Approx. 5 sec. ON
*
When DTC is detected OFF ON
Side radar is factory-default mode con-
dition
NOTEOFF — *1
When radar blockage is detected OFF ON
*2
JSOIA0374GB
JSOIA0254GB
JSOIA0255GB
JSOIA0255GB
Revision: 2010 May2011 QX56

DAS
SYSTEM
DAS-413
< SYSTEM DESCRIPTION >[BSW]
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*1: Blinking cycle when the side radar is in factory-default mode condition
NOTE:
Time shown in the figure is approximate time.
*2: Blinking cycle when the side radar blockage condition
NOTE:
Time shown in the figure is approximate time.
BSW INITIAL STATE CHANGE
CAUTION:
Never change BSW initial state “ON” ⇒ “OFF” without the con sent of the customer.
BSW initial state can be changed.
 BSW initial ON* - BSW function is automatic ally turned ON, when the ignition switch OFF ⇒ ON.
 BSW initial OFF - BSW function is still OFF when the ignition switch OFF ⇒ ON.
*: Factory setting
How to change FCW/LDW/BSW initial state
1. Turn ignition switch ON.
2. Warning systems switch is OFF.
3. Push and hold warning systems switch for more than 4 seconds.
4. Buzzer sounds and blinking of the warning systems ON indicator informs that the FCW/LDW/BSW initial
state changes completed.
Fail-safe (ADAS Control Unit)INFOID:0000000006223852
If a malfunction occurs in each s ystem, ADAS control unit cancels eac h control, sounds a beep, and turns ON
the warning lamp or indicator lamp.
JSOIA0256GB
JSOIA0358GB
Revision: 2010 May2011 QX56

DAS-418
< SYSTEM DESCRIPTION >[BSW]
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
On Board Diagn
osis FunctionINFOID:0000000006223857
DESCRIPTION
The DTC is displayed on the information disp lay by operating the ICC steering switch.
On Board Self-diagnosis System Diagram
METHOD OF STARTING
CAUTION:
Start condition of on board self-diagnosis
 ICC system OFF
 DCA system OFF
 Vehicle speed 0 km/h (0 MPH)
1. Turn the ignition switch OFF.
2. Start the engine.
3. Wait for 5 seconds after starting the engine. Push up the RESUME/ACCELERATE switch 5 times and push down the
SET/COAST switch 5 times within 10 seconds.
NOTE:
If the above operation cannot be performed within 10 seconds
after waiting for 5 seconds after starting the engine, repeat the
procedure from step 1.
4. The DTC is displayed on the set vehicle speed indicator (1) on the ICC system display on the information display when the on board self-diagnosis starts. Refer to DAS-38, "
DTC Index".
NOTE:
JSOIA0271GB
PKIB8371E
JSOIA0008GB
Revision: 2010 May2011 QX56

DAS
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
DAS-419
< SYSTEM DESCRIPTION > [BSW]
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 It displays for up to 5 minutes and then stops.
 If multiple malfunctions exist, up to 6 DTCs can be stored in memory at the most, and the most recent
one is displayed first.
WHEN THE ON BOARD SELF-DIAGNOSIS DOES NOT START
If the on board self-diagnosis does not start, check the following items.
HOW TO ERASE ON BOARD SELF-DIAGNOSIS
1. Turn the ignition switch OFF.
2. Start the engine, and then start the on board self-diagnosis.
3. Press the CANCEL switch 5 times, and then press the DIS-
TANCE switch 5 times under the condition that the on board
self-diagnosis starts.
NOTE:
 Complete the operation within 10 seconds after pressing the
CANCEL switch first.
 If the operation is not completed within 10 seconds, repeat the procedure from step 1.
4. DTC 55 is displayed after erasing. NOTE:
DTCs for existing malfunction can not be erased.
5. Turn ignition switch OFF, and finish the diagnosis.
CONSULT-III Function (ICC/ADAS)INFOID:0000000006223858
APPLICATION ITEMS
CONSULT-III performs the following functions via CAN communication using ADAS control unit.
WORK SUPPORT
Assumed abnormal part Inspection item
Information display Combination meter malfunction Check that the self-diagnosis function of the combina-
tion meter operates. Refer to
MWI-29, "
On Board Diag-
nosis Function"
ICC steering switch malfunction
Perform the inspection for DTC“C1A06”. Refer to CCS-
94, "Diagnosis Procedure"Harness malfunction between ICC steering switch and ECM
ECM malfunction
ADAS control unit malfunction  Check power supply and ground circuit of ADAS con-
trol unit. Refer to DAS-62, "
Diagnosis Procedure".
 Perform SELF-DIAGNOSIS for “ICC/ADAS”with
CONSULT-III, and then check the malfunctioning
parts. Refer to DAS-38, "
DTC Index".
PKIB8373E
Diagnosis mode Description
Work Support Displays causes of automatic system cancellation occurred during system control
Self Diagnostic Result Displays the name of a malfunctioning system stored in the ADAS control unit
Data Monitor Displays ADAS control unit input/output data in real time
Active Test Enables an operational check of a load by transmitting a driving signal from the ADAS control unit to
the load
Ecu Identification Displays ADAS control unit part number
CAN Diag Support Monitor Displays a reception/transmission state of CAN communication and ITS communication
Revision: 2010 May2011 QX56