air condition INFINITI QX56 2011 Factory Service Manual

GROUND CIRCUITDLK-165
< DTC/CIRCUIT DIAGNOSIS >
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GROUND CIRCUIT
Component Function CheckINFOID:0000000006225992
1.CHECK FUNCTION
1. Select “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-III.
2. Select “DESTINATION” and “HAZARD” in “DATA MONITOR” mode.
3. Check that the function operates normall y according to the following conditions.
Is the inspection result normal?
YES >> Automatic back door ground circuit is OK.
NO >> Refer to DLK-165, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006225993
1.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect automatic back door control module connector.
3. Check continuity between automatic back door control module harness connector and ground.
Is the inspection result normal?
YES >> Replace automatic back door control module. Refer to DLK-262, "Removal and Installation".
NO >> Repair or replace harness.
Monitor item Condition Status
DESTINATION Circuit between automatic
back door control module
terminal 22 and ground Normal NAM
Open or short JPN
HAZARD Circuit between automatic
back door control module terminal 23 and ground Normal ON
Open or short OFF
Automatic back door control module
GroundContinuity
Connector Terminal
B26 22
Existed
23
Revision: 2010 May2011 QX56

P POSITION WARNING DOES NOT OPERATEDLK-189
< SYMPTOM DIAGNOSIS >
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P POSITION WARNING DOES NOT OPERATE
DescriptionINFOID:0000000006226026
P position warning function does not operate fo r vehicle with information display models
NOTE:
Warning functions operating condition is extremely comp licated, during operating confirmations, reconfirm the
list above twice in order to ensure proper operation. Refer to DLK-27, "
WARNING FUNCTION : System
Description".
Diagnosis ProcedureINFOID:0000000006226027
1.CHECK DTC WITH BCM
Check that DTC is not detected with BCM
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform trouble diagnosis relevant to DTC indicated.
2.CHECK DTC WITH COMBINATION METER
Check that DTC is not detected with combination meter
Is the inspection result normal?
YES >> GO TO 3.
NO >> Perform trouble diagnosis relevant to DTC indicated.
3.CHECK DOOR SWITCH
Check front door switch (driver side).
Refer to DLK-117, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the malfunctioning parts.
4.CHECK COMBINATION METER BUZZER
Check combination meter buzzer.
Refer to DLK-146, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace the malfunctioning parts.
5.CHECK INFORMATION DISPLAY
Check information display.
Refer to DLK-147, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace the malfunctioning parts.
6.CHECK INTELLIGENT KEY WARNING BUZZER
Check Intelligent Key warning buzzer.
Refer to DLK-143, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace the malfunctioning parts.
7.REPLACE BCM
 Replace BCM. Refer to BCS-81, "
Removal and Installation".
 Confirm the operation after replacement.
Is the result normal?
YES >> INSPECTION END
Revision: 2010 May2011 QX56

ACC WARNING DOES NOT OPERATEDLK-191
< SYMPTOM DIAGNOSIS >
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ACC WARNING DOES NOT OPERATE
DescriptionINFOID:0000000006226028
ACC warning function does not operate for vehicle with information display models
NOTE:
Warning functions operating condition is extremely comp licated, during operating confirmations, reconfirm the
list above twice in order to ensure proper operation. Refer to DLK-27, "
WARNING FUNCTION : System
Description".
Diagnosis ProcedureINFOID:0000000006226029
1.CHECK DTC WITH BCM
Check that DTC is not detected with BCM
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform trouble diagnosis relevant to DTC indicated.
2.CHECK DTC WITH COMBINATION METER
Check that DTC is not detected with combination meter
Is the inspection result normal?
YES >> GO TO 3.
NO >> Perform trouble diagnosis relevant to DTC indicated.
3.CHECK COMBINATION METER BUZZER
Check combination meter buzzer.
Refer to DLK-146, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the malfunctioning parts.
4.CHECK INFORMATION DISPLAY
Check information display.
Refer to DLK-147, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace the malfunctioning parts.
5.REPLACE BCM
 Replace BCM. Refer to BCS-81, "
Removal and Installation".
 Confirm the operation after replacement.
Is the result normal?
YES >> INSPECTION END
NO >> Check intermittent incident. Refer to GI-40, "
Intermittent Incident".
Revision: 2010 May2011 QX56

DLK-192
< SYMPTOM DIAGNOSIS >
TAKE AWAY WARNING DOES NOT OPERATE
TAKE AWAY WARNING DOES NOT OPERATE
DescriptionINFOID:0000000006226030
Take away warning function does not operate for vehicle with information display models.
NOTE:
Warning functions operating condition is extremely complicated, during operating confirmations, reconfirm the
list above twice in order to ensure proper operation. Refer to DLK-27, "
WARNING FUNCTION : System
Description".
Diagnosis ProcedureINFOID:0000000006226031
1.CHECK DTC WITH BCM
Check that DTC is not detected with BCM
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform trouble diagnosis relevant to DTC indicated.
2.CHECK DTC WITH COMBINATION METER
Check that DTC is not detected with combination meter
Is the inspection result normal?
YES >> GO TO 3.
NO >> Perform trouble diagnosis relevant to DTC indicated.
3.CHECK INSIDE KEY ANTENNA
Check inside key antenna.
 Instrument center: Refer to DLK-104, "
DTC Logic".
 Console: Refer to DLK-106, "
DTC Logic".
 Luggage room: Refer to DLK-108, "
DTC Logic".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the malfunctioning parts.
4.CHECK DOOR SWITCH
Check front door switch (driver side).
Refer to DLK-117, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace the malfunctioning parts.
5.CHECK COMBINATION METER BUZZER
Check combination meter buzzer.
Refer to DLK-146, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace the malfunctioning parts.
6.CHECK INFORMATION DISPLAY
Check information display.
Refer to DLK-147, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace the malfunctioning parts.
7.CHECK INTELLIGENT KEY WARNING BUZZER
Check Intelligent Key warning buzzer.
Refer to DLK-143, "
ComponentFunctionCheck".
Revision: 2010 May2011 QX56

DLK-194
< SYMPTOM DIAGNOSIS >
KEY ID WARNING DOES NOT OPERATE
KEY ID WARNING DOES NOT OPERATE
DescriptionINFOID:0000000006226032
Key ID warning function does not operate for vehicle with information display models.
NOTE:
Warning functions operating condition is extremely comp licated, during operating confirmations, reconfirm the
list above twice in order to ensure proper operation. Refer to DLK-27, "
WARNING FUNCTION : System
Description".
Diagnosis ProcedureINFOID:0000000006226033
1.CHECK DTC WITH BCM
Check that DTC is not detected with BCM
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform trouble diagnosis relevant to DTC indicated.
2.CHECK DTC WITH COMBINATION METER
Check that DTC is not detected with combination meter
Is the inspection result normal?
YES >> GO TO 3.
NO >> Perform trouble diagnosis relevant to DTC indicated.
3.CHECK INTELLIGENT KEY
Check Intelligent Key.
Refer to DLK-145, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the malfunctioning parts.
4.CHECK INSIDE KEY ANTENNA
Check inside key antenna.
 Instrument center: Refer to DLK-104, "
DTC Logic".
 Console: Refer to DLK-106, "
DTC Logic".
 Luggage room: Refer to DLK-108, "
DTC Logic".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace the malfunctioning parts.
5.CHECK INFORMATION DISPLAY
Check information display.
Refer to DLK-147, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace the malfunctioning parts.
6.REPLACE BCM
 Replace BCM. Refer to BCS-81, "
Removal and Installation".
 Confirm the operation after replacement.
Is the result normal?
YES >> INSPECTION END
NO >> Check intermittent incident. Refer to GI-40, "
Intermittent Incident".
Revision: 2010 May2011 QX56

INTELLIGENT KEY LOW BATTERY WARNING DOES NOT OPERATE
DLK-195
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INTELLIGENT KEY LOW BATTERY WARNING DOES NOT OPERATE
DescriptionINFOID:0000000006226034
Intelligent Key low battery warning does not operat e for vehicle with information display models.
NOTE:
Warning functions operating condition is extremely comp licated, during operating confirmations, reconfirm the
list above twice in order to ensure proper operation. Refer to DLK-27, "
WARNING FUNCTION : System
Description".
Diagnosis ProcedureINFOID:0000000006226035
1.CHECK DTC WITH BCM
Check that DTC is not detected with BCM
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform trouble diagnosis relevant to DTC indicated.
2.CHECK DTC WITH COMBINATION METER
Check that DTC is not detected with combination meter
Is the inspection result normal?
YES >> GO TO 3.
NO >> Perform trouble diagnosis relevant to DTC indicated.
3.CHECK “LO- BATT OF KEY FOB WARN” SETTING IN “WORK SUPPORT”
1. Select “INTELLIGENT KEY” of “BCM”.
2. Select “LO- BATT OF KEY FOB WARN” in “WORK SUPPORT” mode.
3. Check “LO- BATT OF KEY FOB WARN” setting in “WORK SUPPORT”. Refer to DLK-41, "
INTELLIGENT KEY : CONSULT-III Function (BCM - INTELLIGENT KEY)".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Set “ON” in “LO- BATT OF KEY FOB WARN”.
4.CHECK INTELLIGENT KEY
Check Intelligent Key.
Refer to DLK-145, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace the malfunctioning parts.
5.CHECK INSIDE KEY ANTENNA
Check inside key antenna.
 Instrument center: Refer to DLK-104, "
DTC Logic".
 Console: Refer to DLK-106, "
DTC Logic".
 Luggage room: Refer to DLK-108, "
DTC Logic".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace the malfunctioning parts.
6.CHECK INFORMATION DISPLAY
Check information display.
Refer to DLK-147, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace the malfunctioning parts.
7.REPLACE BCM
 Replace BCM. Refer to BCS-81, "
Removal and Installation".
Revision: 2010 May2011 QX56

DLK-198
< SYMPTOM DIAGNOSIS >
AUTOMATIC BACK DOOR OPERATION DOES NOT OPERATE
AUTOMATIC BACK DOOR OPERATION DOES NOT OPERATE
ALL SWITCHES
ALL SWITCHES : DescriptionINFOID:0000000006226037
Automatic back door open/close function does not operate using all switches.
NOTE:
Automatic back door open/close operation condition is ex tremely complicated, during operating confirmations,
reconfirm the list above twice in order to ensure proper operation. Refer to DLK-31, "
System Description".
ALL SWITCHES : Diagnosis ProcedureINFOID:0000000006226038
1.CHECK DTC WITH AUTOMATIC BACK DOOR CONTROL MODULE
Check that DTC is not detected with automatic back door control module.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform trouble diagnosis relevant to DTC indicated.
2.CHECK BACK DOOR AUTO CLOSURE FUNCTION
Check back door auto closure function.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Refer to DLK-201, "
OPEN/CLOSURE FUNCTION : Diagnosis Procedure".
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check automatic back door control module power supply and ground circuit.
Refer to DLK-116, "
AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the malfunctioning parts.
4.CHECK GROUND CIRCUIT
Check automatic back door control module ground circuit.
Refer to DLK-165, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace the malfunctioning parts.
5.CHECK TOUCH SENSOR LH
Check touch sensor LH.
Refer to DLK-159, "
LH : ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace the malfunctioning parts.
6.CHECK TOUCH SENSOR RH
Check touch sensor RH.
Refer to DLK-158, "
RH : ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace the malfunctioning parts.
7.REPLACE AUTOMATIC BACK DOOR CONTROL MODULE
1. Replace automatic back door control module. Refer to DLK-262, "
Removal and Installation".
2. Confirm the operation after replacement.
Is the result normal?
YES >> INSPECTION END
Revision: 2010 May2011 QX56

AUTOMATIC BACK DOOR OPERATION DOES NOT OPERATE
DLK-199
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NO >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
AUTOMATIC BACK DOOR SWITCH
AUTOMATIC BACK DOOR SWITCH : DescriptionINFOID:0000000006226039
Automatic back door open/close function does not operate using automatic back door switch.
NOTE:
Automatic back door open/close operation condition is extr emely complicated, during operating confirmations,
reconfirm the list above twice in order to ensure proper operation. Refer to DLK-31, "
System Description".
AUTOMATIC BACK DOOR SWITCH : Diagnosis ProcedureINFOID:0000000006226040
1.CHECK AUTOMATIC BACK DOOR SWITCH
Check automatic back door switch.
Refer to DLK-154, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace the malfunctioning parts.
2.REPLACE AUTOMATIC BACK DOOR CONTROL MODULE
1. Replace automatic back door control module. Refer to DLK-262, "
Removal and Installation".
2. Confirm the operation after replacement.
Is the result normal?
YES >> INSPECTION END
NO >> Check intermittent incident. Refer to GI-40, "
Intermittent Incident".
AUTOMATIC BACK DOOR CLOSE SWITCH
AUTOMATIC BACK DOOR CLOSE SWITCH : DescriptionINFOID:0000000006226041
Automatic back door open/close function does not oper ate using automatic back door close switch.
NOTE:
Automatic back door open/close operation condition is extr emely complicated, during operating confirmations,
reconfirm the list above twice in order to ensure proper operation. Refer to DLK-31, "
System Description".
AUTOMATIC BACK DOOR CLOSE SWITCH : Diagnosis ProcedureINFOID:0000000006226042
1.CONFIRM THE OPERATION
1. Turn ON automatic back door main switch.
2. Confirm the operation.
Is the result normal?
YES >> Automatic back door system is normal.
NO >> GO TO 2.
2.CHECK AUTOMATIC BACK DOOR CLOSE SWITCH
Check automatic back door close switch.
Refer to DLK-150, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the malfunctioning parts.
3.CHECK AUTOMATIC BACK DOOR MAIN SWITCH
Check automatic back door main switch.
Refer to DLK-152, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the malfunctioning parts.
4.REPLACE AUTOMATIC BACK DOOR CONTROL MODULE
Revision: 2010 May2011 QX56

SQUEAK AND RATTLE TROUBLE DIAGNOSESDLK-209
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SQUEAK AND RATTLE TROUBLE DIAGNOSES
Work FlowINFOID:0000000006425595
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist when the noise occurs. Use the Diag-
nostic Worksheet during the interview to document t he facts and conditions when the noise occurs and any of
customer's comments; refer to DLK-213, "
Diagnostic Worksheet". This information is necessary to duplicate
the conditions that exist when the noise occurs.
 The customer may not be able to provide a detailed description or the location of the noise. Attempt to obtain all the facts and conditions that exist when the noise occurs (or does not occur).
 If there is more than one noise in the vehicle, perform a diagnosis and repair the noise that the customer is
concerned about. This can be accomplished by performing a cruise test on the vehicle with the customer.
 After identifying the type of noise, isolate the noise in terms of its characteristics. The noise characteristics
are provided so the customer, service adviser and technician are all speaking the same language when
defining the noise.
 Squeak – (Like tennis shoes on a clean floor)
Squeak characteristics include the light contact/fast movement/brought on by road conditions/hard surfaces
= higher pitch noise/softer surfaces = lower pitch noises/edge to surface = chirping
 Creak – (Like walking on an old wooden floor)
Creak characteristics include firm contact/slow mo vement/twisting with a rotational movement/pitch depen-
dent on materials/often brought on by activity.
 Rattle – (Like shaking a baby rattle)
Rattle characteristics include the fast repeated contac t/vibration or similar movement/loose parts/missing
clip or fastener/incorrect clearance.
 Knock – (Like a knock on a door)
Knock characteristics include hollow sounding/someti mes repeating/often brought on by driver action.
 Tick – (Like a clock second hand) Tick characteristics include gentle contacting of li ght materials/loose components/can be caused by driver
action or road conditions.
 Thump – (Heavy, muffled knock noise) Thump characteristics include softer k nock/dead sound often brought on by activity.
 Buzz – (Like a bumblebee)
Buzz characteristics include high frequency rattle/firm contact.
 Often the degree of acceptable noise level will vary depending up on the person. A noise that a technician may judge as acceptable may be very irritating to the customer.
 Weather conditions, especially humidity and temperat ure, may have a great effect on noise level.
DUPLICATE THE NOISE AND TEST DRIVE
If possible, drive the vehicle with the customer until the noise is duplicated. Note any additional information on
the Diagnostic Worksheet regarding the conditions or lo cation of the noise. This information can be used to
duplicate the same conditions when the repair is reconfirmed.
SBT842
Revision: 2010 May2011 QX56

DLK-210
< SYMPTOM DIAGNOSIS >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
If the noise can be duplicated easily during the test drive, to help identify the source of the noise, try to dupli-
cate the noise with the vehicle stopped by doing one or all of the following:
1) Close a door.
2) Tap or push/pull around the area where the noise appears to be coming from.
3) Rev the engine.
4) Use a floor jack to recreate vehicle “twist”.
5) At idle, apply engine load (electrical load, half-cl utch on M/T models, drive position on A/T models).
6) Raise the vehicle on a hoist and hit a tire with a rubber hammer.
 Drive the vehicle and attempt to duplicate the conditions the customer states exist when the noise occurs.
 If it is difficult to duplicate the noise, drive the v ehicle slowly on an undulating or rough road to stress the
vehicle body.
CHECK RELATED SERVICE BULLETINS
After verifying the customer concern or symptom, chec k ASIST for Technical Service Bulletins (TSBs) related
to that concern or symptom.
If a TSB relates to the symptom, follo w the procedure to repair the noise.
LOCATE THE NOISE AND IDENTIFY THE ROOT CAUSE
1. Narrow down the noise to a general area. To help pi npoint the source of the noise, use a listening tool
(Chassis ear: J-39570, Engine ear and mechanics stethoscope).
2. Narrow down the noise to a more specific area and identify the cause of the noise by:
 Removing the components in the area that is are suspected to be the cause of the noise.
Do not use too much force when removing clips and fasteners, otherwise clips and fastener can be broken
or lost during the repair, resulting in the creation of new noise.
 Tapping or pushing/pulling the component that is are suspected to be the cause of the noise.
Do not tap or push/pull the component with excessive force, otherwise the noise will be eliminated only tem-
porarily.
 Feeling for a vibration by hand by touching the component (s) that is are suspected to be the cause of the
noise.
 Placing a piece of paper between components that are suspected to be the cause of the noise.
 Looking for loose components and contact marks. Refer to DLK-211, "
Inspection Procedure".
REPAIR THE CAUSE
 If the cause is a loose component, tighten the component securely.
 If the cause is insufficient clearance between components:
- Separate components by repositioning or loos ening and retightening the component, if possible.
- Insulate components with a suitable insulator such as urethane pads, foam blocks, felt cloth tape or ure-
thane tape. A Nissan Squeak and Rattle Kit (J-43980) is available through the authorized Nissan Parts
Department.
CAUTION:
Never use excessive force as many components are constructed of plastic and may be damaged.
NOTE:
Always check with the Parts Departm ent for the latest parts information.
The following materials are contained in the Nissan Squeak and Rattle Kit (J-43980). Each item can be
ordered separately as needed.
URETHANE PADS [1.5 mm (0.059 in) thick]
Insulates connectors, harness, etc.
76268-9E005: 100 ×135 mm (3.94 ×5.31 in)/76884-71L01: 60 ×85 mm (2.36 ×3.35 in)/76884-
71L02:15 ×25 mm (0.59 ×0.98 in)
INSULATOR (Foam blocks)
Insulates components from contact. Can be used to fill space behind a panel.
73982-9E000: 45 mm (1.77 in) thick, 50 ×50 mm (1.97 ×1.97 in)/73982-
50Y00: 10 mm (0.39 in) thick, 50 ×50 mm (1.97 ×1.97 in)
INSULATOR (Light foam block)
80845-71L00: 30 mm (1.18 in) thick, 30 ×50 mm (1.18 ×1.97in)
FELT CLOTHTAPE
Used to insulate where movement does not occu r. Ideal for instrument panel applications.
68370-4B000: 15 ×25 mm (0.59 ×0.98 in) pad/68239-13E00: 5 mm (0.20 in) wide tape roll
The following materials, not found in the kit, can also be used to repair squeaks and rattles.
UHMW (TEFLON) TAPE
Revision: 2010 May2011 QX56