air condition INFINITI QX56 2011 Factory Service Manual

DAS
DCA SYSTEM NOT ACTIVATED (SWITCH IS ON)DAS-201
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DCA SYSTEM NOT ACTIVA TED (SWITCH IS ON)
DescriptionINFOID:0000000006223655
The dynamic driver assistance switch can be tu rned ON/OFF, but the DCA system does not operate.
NOTE:
Never start the operation under the following conditions. No operation condition
 When the brake pedal depressed
 When the ICC system is set
 When the system judges that the vehicle co mes to a standstill by the system control
 When the vehicle ahead is not detected Operation cancellation condition
 When the dynamic driver assistance switch is turned to OFF
 When the system malfunction occurs
 When ABS or VDC (including the TCS) operates
 When the VDC is turned OFF
 When driving into a strong light (i.e., sunlight)
 When the ICC sensor body window is dirty and the measurement of the distance between the vehicles
becomes difficult
 When ABS warning lamp is ON
 When the SNOW mode switch is turned ON
 When the 4WD shift switch is not AUTO position
Diagnosis ProcedureINFOID:0000000006223656
1.CHECK CAUSE OF AUTOMATIC CANCELLATION
Check if there is any cancellation cause in the “CAUSE OF AUTO-CANCEL” on “WORK SUPPORT” of “ICC/
ADAS” with CONSULT-III.
Is it displayed?
Not displayed>>GO TO 2.
“OPE SW VOLT CIRC”>>Refer to DAS-138, "
DTC Logic".
“VHCL SPD UNMATCH”>>Refer to DAS-131, "
DTC Logic".
“IGN LOW VOLT”>>Refer to DAS-130, "
DTC Logic".
“CAN COMM ERROR”>>Refer to DAS-182, "
ADAS CONTROL UNIT : DTC Logic".
“ICC SENSOR CAN COMM ERR”>>Refer to DAS-177, "
DTC Logic".
“ABS/TCS/VDC CIRC”>>Refer to DAS-133, "
DTC Logic".
“APA HI TEMP”>>Refer to DAS-170, "
DTC Logic".
“ECD CIRCUIT”>>Refer to DAS-156, "
DTC Logic".
2.PERFORM ALL OF THE SELF-DIAGNOSIS
1. Perform “All DTC Reading”.
2. Check if any DTC is detected in self-d iagnosis results of “ICC/ADAS”. Refer to DAS-100, "
DTC Index".
Is any DTC detected?
YES >> GO TO 3.
NO >> GO TO 4.
3.REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace malfunctioning parts i dentified by the self-diagnosis result.
>> GO TO 6.
4.CHECK EACH SWITCH AND VEHICLE SPEED SIGNAL
1. Start the engine.
2. Check that the following items operate norma lly in “DATA MONITOR” of “ICC/ADAS”.
- “VHCL SPEED SE”
- “BRAKE SW”
- “DYNA ASIST SW”
Is there a malfunctioning item?
Revision: 2010 May2011 QX56

DAS
CHIME DOES NOT SOUNDDAS-203
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CHIME DOES NOT SOUND
DescriptionINFOID:0000000006223657
The warning chime may not sound in some cases when there is a short distance between vehicles. Some
examples are:
 When the vehicles are traveling at the same s peed and the distance between vehicles is not changing
 When the vehicle ahead is traveling faster and the distance between vehicles is increasing
 When a vehicle cuts in near own vehicle
 The warning chime will not sound when own vehicle approaches vehicles that are parked or moving slowly.
 The warning chime does not sound when the system does not detect any vehicle ahead. (Diagnose the con-
ditions under which the system is detecting the v ehicle ahead and when the system is malfunctioning. If
there is any malfunction in detecting the v ehicle ahead, check the system following the DAS-206, "
Descrip-
tion".)
Diagnosis ProcedureINFOID:0000000006223658
1.PERFORM ACTIVE TEST
Check if the warning chime sounds on the active test item “ICC BUZZER” of “ICC/ADAS” with CONSULT-III.
Does the warning chime sound?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK THE MALFUNCTION SYMPTOM DURI NG WARNING CHIME OPERATION
Understand the vehicle ahead detection condition when the ma lfunction occurred. If the warning chime should
have sounded, replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
>> GO TO 9.
3.PERFORM THE SELF-DIAGNOSIS
1. Perform “All DTC Readi ng” with CONSULT-III.
2. Check if the “U1000” is detected in self-diagnosis results of “ICC/ADAS”.
Is
“U1000” detected?
YES >> GO TO 4.
NO >> GO TO 5.
4.CAN COMMUNICATIONS INSPECTION
Check the CAN communication and repair or replace malfunctioning parts. Refer to DAS-182, "
ADAS CON-
TROL UNIT : DTC Logic".
>> GO TO 9.
5.PERFORM THE SELF-DIAGNOSIS OF COMBINATION METER
1. Perform “All DTC Readi ng” with CONSULT-III.
2. Check if any DTC is detected in se lf-diagnosis results of “METER/M&A”.
Is any DTC detected?
YES >> Repair or replace malfunctioning parts. Refer to MWI-43, "DTC Index".
NO >> GO TO 6.
6.CHECK ICC WARNING CHIME CIRCUIT
Check meter buzzer. Refer to WCS-40, "
Component Function Check".
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 7.
7.REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace malfunctioning parts.
Revision: 2010 May2011 QX56

DAS
NO FORCE GENERATED FOR PUTTING BACK THE ACCELERATOR PEDALDAS-205
< SYMPTOM DIAGNOSIS > [DCA]
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NO FORCE GENERATED FOR PUTTI NG BACK THE ACCELERATOR
PEDAL
DescriptionINFOID:0000000006223659
The dynamic driver assistance switch can be turned ON /OFF but the actuation force of accelerator pedal is
not generated.
NOTE:
 When the vehicle ahead detection indicator does not illumi nate, the control and warning with the system are
not performed.
 The actuation force of accelerator pedal may not be generated sufficiently depending on depressing method
or depressing amount of accelerator pedal.
Diagnosis ProcedureINFOID:0000000006223660
1.PERFORM THE SELF-DIAGNOSIS
1. Perform “All DTC Readi ng” with CONSULT-III.
2. Check if any DTC is detected in self-diagnosis results of “ICC/ADAS” or “ACCELE PEDAL ACT“.
Is any DTC detected?
YES >> GO TO 2.
NO >> GO TO 3.
2.REPAIR OR REPLACE THE MALFUNCTIONING PARTS
Repair or replace malfunctioning parts. Refer to DAS-100, "
DTC Index" (ICC/ADAS) or DAS-108, "DTC Index"
(ACCELE PEDAL ACT).
>> GO TO 5.
3.PERFORM ACTIVE TEST
Check if the accelerator pedal actuator operates by the active test items “ACCELERATOR PEDAL ACTUA-
TOR TEST1” and “ACCELERATOR PEDAL ACTUATOR T EST2” of “ACCELE PEDAL ACT” with CONSULT-
III.
Does it operate?
YES >> GO TO 4.
NO >> Replace the accelerator pedal assembly.
4.CHECK VEHICLE AHEAD DETECTION PERFORMANCE
Understand the vehicle ahead detection condition when the malfunction occurred. If the detecting function is
malfunctioning, check according to DAS-206, "
Description".
>> INSPECTION END
5.CHECK DCA SYSTEM
1. Erase “self-diagnosis result”, and then perform “All DTC Reading” again after performing the action test.
(Refer to DAS-128, "
Description" for action test.)
2. Check if the DCA system is normal.
>> INSPECTION END
Revision: 2010 May2011 QX56

DAS
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. 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-288
< SYSTEM DESCRIPTION >[LDW & LDP]
HANDLING PRECAUTION
HANDLING PRECAUTION
Precautions for Lane Departure Wa
rning/Lane Departure PreventionINFOID:0000000006223714
LANE CAMERA UNIT HANDLING
To keep the proper operation of the LDW/LDP systems and prevent a system malfunction, be sure to observe
the following:
 Always keep the windshield clean.
 Do not attach a sticker (including transparent materi al) or install an accessory near the lane camera unit.
 Do not place reflective materials, such as white paper or a mirror, on the instrument panel. The reflection of
sunlight may adversely affect the lane camera unit capability of detecting the lane markers.
 Do not strike or damage the areas around the lane camera unit.
 Do not touch the camera lens.
 Do not remove the screw located on the lane camera unit.
LANE DEPARTURE WARNING (LDW)
 LDW system is only a warning device to inform the dr iver of a potential unintended lane departure. It will not
steer the vehicle or prevent loss of cont rol. 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 speeds below approximat ely 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 c ontrasting 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 wi ndshield 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 uni t. (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.)
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-dev eloped 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 approxim ately 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 off-road such as on sand or rock, 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.
Revision: 2010 May2011 QX56

DAS
HANDLING PRECAUTIONDAS-289
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- When driving without normal tire conditions (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.
- When towing a trailer or other vehicle.
 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.
- On roads where there are sharply contrasting objects, such as shadows, snow, water, wheel ruts, seams or
lines remaining after road repairs (The LDP syste m 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.)
 While the LDP system is operating, driver may hear a sound of brake operation. This is normal and indicates
that the LDP system is operating properly.
Revision: 2010 May2011 QX56

DAS
DIAGNOSIS AND REPAIR WORK FLOWDAS-333
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>> GO TO 2.
2.SELF-DIAGNOSIS WITH CONSULT-III
1. Perform “All DTC Reading” with CONSULT-III.
2. Check if the DTC is detected on the self-diagnosis results of “ICC/ADAS” and/or “LANE CAMERA”.
Is any DTC detected?
YES >> GO TO 5.
NO >> GO TO 3.
3.PRE-INSPECTION FOR DIAGNOSIS
Perform pre-inspection for diagnosis. Refer to DAS-335, "
Inspection Procedure".
>> GO TO 4.
4.ACTION TEST
Perform LDW/LDP system action test to check the operation status. Refer to DAS-336, "
Description".
>> GO TO 6.
5.TROUBLE DIAGNOSIS BY DTC
Perform trouble diagnosis for the detected DTC. Specify a malfunctioning part. Refer to DAS-310, "
DTC Index"
(ICC/ADAS) and/or DAS-316, "DTC Index" (LANE CAMERA).
>> GO TO 7.
6.SYMPTOM DIAGNOSIS
Perform symptom diagnosis. Specify malfunctioning part. Refer to DAS-395, "
Symptom Table".
>> GO TO 7.
7.MALFUNCTION PART REPAIR
Repair or replace the identified malfunctioning parts.
>> GO TO 8.
8.REPAIR CHECK (SELF-DIAGNOSIS WITH CONSULT-III)
Perform self-diagnosis with CONSULT-II I. Check that any DTC is not detected. Erase DTC if DTC is detected
before the repair. Check that DTC is not detected again.
Is any DTC detected?
YES >> GO TO 5.
NO >> GO TO 9.
9.REPAIR CHECK (ACTION TEST)
Perform LDW/LDP system action test . Also check the system operation.
Does it operate normally?
YES >> INSPECTION END
NO >> GO TO 4.
Diagnostic Work SheetINFOID:0000000006223728
DESCRIPTION
In general, each customer feels differently about an inci dent. It is important to fully understand the symptoms
or conditions for a customer complaint.
There are many operating conditions that lead to the malfunction. A good grasp of such conditions can make
troubleshooting faster and more accurate.
Some conditions may cause the lane departure warning lamp to stay ON.
Revision: 2010 May2011 QX56

DAS-334
< BASIC INSPECTION >[LDW & LDP]
DIAGNOSIS AND REPAIR WORK FLOW
Utilize a work sheet sample to organize all of the information for troubleshooting.
KEY POINTS WHAT..... System and functions
 WHEN..... Date, Frequencies
 WHERE..... Road conditions
 HOW..... Operating conditions, Symptoms
WORK SHEET SAMPLE
JSOIA0287GB
Revision: 2010 May2011 QX56

DAS
PRE-INSPECTION FOR DIAGNOSISDAS-335
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PRE-INSPECTION FOR DIAGNOSIS
Inspection ProcedureINFOID:0000000006223729
1.CHECK CAMERA LENS AND WINDSHIELD
Are camera lens and windshield contaminated with foreign materials?
YES >> Clean camera lens and windshield.
NO >> GO TO 2.
2.CHECK LANE CAMERA UNIT INSTALLATION CONDITION
Check lane camera unit installation condition (install ation position, properly tightened, a bent bracket).
Is it properly installed?
YES >> GO TO 3.
NO >> Install lane camera unit properly, and perform camera aiming. Refer to DAS-340, "
Description".
3.CHECK VEHICLE HEIGHT
Check vehicle height. Refer to FSU-21, "
Wheel Height".
Is vehicle height appropriate?
YES >> INSPECTION END
NO >> Repair vehicle to appropriate height.
Revision: 2010 May2011 QX56

DAS
C1A00 CONTROL UNITDAS-345
< DTC/CIRCUIT DIAGNOSIS > [LDW & LDP]
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DTC/CIRCUIT DIAGNOSIS
C1A00 CONTROL UNIT
DTC LogicINFOID:0000000006223739
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Perform “All DTC Readi ng” with CONSULT-III.
3. Check if the “C1A00” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A00” detected as the current malfunction?
YES >> Refer to DAS-345, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006223740
1.CHECK SELF-DIAGNOSIS RESULTS
Check if any DTC other than “C1A00” is detect ed in “Self Diagnostic Result” of “ICC/ADAS”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
DAS-38, "
DTC Index".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board dis- play) Trouble diagnosis name DTC detecting condition Possible causes
C1A00 (0) CONTROL UNIT ADAS control unit inte
rnal malfunction ADAS control unit
Revision: 2010 May2011 QX56