2011 INFINITI QX56 air condition

EXL-108
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
AFS SWITCH
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness.
4.CHECK AFS SWITCH
Refer to EXL-108, "
Component Inspection".
Is the inspection result normal?
YES >> Replace AFS control unit. Refer to EXL-135, "Removal and Installation".
NO >> Replace AFS switch.
Component InspectionINFOID:0000000006213975
1.CHECK AFS SWITCH
1. Turn ignition switch OFF.
2. Disconnect triple switch connector.
3. Check continuity between triple switch terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace AFS switch.
Triple switch Condition Continuity
Te r m i n a l
3 4 AFS switch Pressed Existed
Released Not existed
Revision: 2010 May2011 QX56

BOTH SIDE HEADLAMPS DO NOT SWITCH TO HIGH BEAM
EXL-117
< SYMPTOM DIAGNOSIS > [XENON TYPE]
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BOTH SIDE HEADLAMPS DO NOT SWITCH TO HIGH BEAM
DescriptionINFOID:0000000006213982
Both side headlamps (HI) are not turned ON when setting to the lighting switch HI or PASS.
Diagnosis ProcedureINFOID:0000000006213983
1.COMBINATION SWITCH INSPECTION
Check combination switch. Refer to BCS-80, "
Symptom Table".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace the malfunctioning part.
2.CHECK HEADLAMP (HI) REQUEST SIGNAL INPUT
CONSULT-III DATA MONITOR
1. Select “HL HI REQ” of IPDM E/R data monitor item.
2. With operating the lighting switch, check the monitor status.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace BCM. Refer to BCS-81, "
Removal and Installation".
3.HEADLAMP (HI) CIRCUIT INSPECTION
Check headlamp (HI) circuit. Refer to EXL-86, "
Component Function Check".
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> Repair or replace the malfunctioning part.
Monitor item Condition Monitor status
HL HI REQ Lighting switch
(2ND) HI or PASS On
LO Off
Revision: 2010 May2011 QX56

EXL-118
< SYMPTOM DIAGNOSIS >[XENON TYPE]
BOTH SIDE HEADLAMPS (LO) ARE NOT TURNED ON
BOTH SIDE HEADLAMPS (L
O) ARE NOT TURNED ON
DescriptionINFOID:0000000006213984
Both side headlamps (LO) are not turned ON in any condition.
Diagnosis ProcedureINFOID:0000000006213985
1.CHECK COMBINATION SWITCH
Check combination switch. Refer to BCS-80, "
Symptom Table".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace the malfunctioning part.
2.CHECK HEADLAMP (LO) REQUEST SIGNAL INPUT
CONSULT-III DATA MONITOR
1. Select “HL LO REQ” of IPDM E/R data monitor item.
2. With operating the lighting switch, check the monitor status.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace BCM. Refer to BCS-81, "
Removal and Installation".
3.HEADLAMP (LO) CIRCUIT INSPECTION
Check headlamp (LO) circuit. Refer to EXL-88, "
Component Function Check".
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> Repair or replace the malfunctioning part.
Monitor item Condition Monitor status
HL LO REQ Lighting switch 2ND On
OFF Off
Revision: 2010 May2011 QX56

PARKING, LICENSE PLATE, SIDE MARKER AND TAIL LAMPS ARE NOT TURNED ON
EXL-119
< SYMPTOM DIAGNOSIS > [XENON TYPE]
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PARKING, LICENSE PLATE, SIDE MARKER AND TAIL LAMPS ARE NOT
TURNED ON
DescriptionINFOID:0000000006213986
The parking, license plate, tail lamps and side marker are not turned ON in any condition.
Diagnosis ProcedureINFOID:0000000006213987
1.CHECK FUSE
Check that the following fuse is fusing.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the applicable circuit. And then replace the fuse.
2.COMBINATION SWITCH INSPECTION
Check combination switch. Refer to BCS-80, "
Symptom Table".
Is the combination switch normal?
YES >> GO TO 3.
NO >> Repair or replace the malfunctioning part.
3.CHECK TAIL LAMP RELAY REQUEST SIGNAL INPUT
CONSULT-III DATA MONITOR
1. Select “TAIL & CLR REQ” of IPDM E/R data monitor item.
2. With operating the lighting switch, check the monitor status.
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> Replace BCM. Refer to BCS-81, "
Removal and Installation".
Location Fuse No. Capacity
IPDM E/R #46 10 A
#47 10 A
Monitor item Condition Monitor status
TAIL & CLR REQ Lighting switch 1ST On
OFF Off
Revision: 2010 May2011 QX56

EXL-120
< SYMPTOM DIAGNOSIS >[XENON TYPE]
BOTH SIDE FRONT FOG
LAMPS ARE NOT TURNED ON
BOTH SIDE FRONT FOG LA MPS ARE NOT TURNED ON
DescriptionINFOID:0000000006213988
The front fog lamps are not turned ON in any condition.
Diagnosis ProcedureINFOID:0000000006213989
1.CHECK FUSE
Check that the following fuse is fusing.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the applicable circuit. And then replace the fuse.
2.COMBINATION SWITCH INSPECTION
Check combination switch. Refer to BCS-80, "
Symptom Table".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the malfunctioning part.
3.CHECK FRONT FOG LAMP REQUEST SIGNAL INPUT
CONSULT-III DATA MONITOR
1. Select “FR FOG REQ” of IPDM E/R data monitor item.
2. With operating the front fog lamp switch, check the monitor status.
Is the item status normal?
YES >> GO TO 4.
NO >> Replace BCM. Refer to BCS-81, "
Removal and Installation".
4.FRONT FOG LAMP CIRCUIT INSPECTION
Check the front fog lamp circuit. Refer to EXL-94, "
Component Function Check".
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> Repair or replace the malfunctioning part.
Unit Location Fuse No. Capacity
Front fog lamp IPDM E/R #50 15 A
Monitor item Condition Monitor status
FR FOG REQ Front fog lamp switch
(With lighting switch 1ST)ON On
OFF Off
Revision: 2010 May2011 QX56

HEADLAMP AIMING ADJUSTMENTEXL-121
< PERIODIC MAINTENANCE > [XENON TYPE]
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PERIODIC MAINTENANCE
HEADLAMP AIMING ADJUSTMENT
descriptionINFOID:0000000006213990
preparation before adjusting
NOTE:
 for details, refer to the regulations in your own country.
 perform aiming if the vehicle front body has been repaired and/or the headlamp assembly has been
replaced.
before performing aiming adjustment, check the following.  adjust the tire pressure to the specification.
 fill with fuel, engine coolant and each oil.
 maintain the unloaded vehicle condition. (remove luggage from the passenger compartment and the lug- gage room.)
NOTE:
do not remove the temporary tire, jack and on-vehicle tool.
 wipe out dirt on the headlamp.
CAUTION:
never use organic solvent (thinner, gasoline etc.)
 ride alone on the driver seat.
aiming adjustment screw
JMLIA1319ZZ
A. Headlamp RH HI /LO (UP/DOWN)
adjustment screw B. Headlamp LH HI/LO (UP/DOWN)
adjustment screw
: Vehicle center
Revision: 2010 May2011 QX56

FRONT FOG LAMP AIMING ADJUSTMENTEXL-123
< PERIODIC MAINTENANCE > [XENON TYPE]
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FRONT FOG LAMP AI MING ADJUSTMENT
DescriptionINFOID:0000000006213992
PREPARATION BEFORE ADJUSTING
NOTE:
 For details, refer to the regulations in your own country.
 Perform aiming if the vehicle front body has been repaired and/or the headlamp assembly has been
replaced.
Before performing aiming adjustm ent, check the following.  Adjust the tire pressure to the specification.
 Fill with fuel, engine coolant and each oil.
 Maintain the unloaded vehicle condition. (Remove luggage from the passenger compartment and the trunk
room.)
NOTE:
Do not remove the temporary tire, jack and on-vehicle tool.
 Wipe out dirt on the headlamp. CAUTION:
Never use organic solvent (thinner, gasoline etc.)
 Ride alone on the driver seat.
AIMING ADJUSTMENT SCREW
 Turn the aiming adjusting screw for adjustment.
 For the position and direction of the adjusting screw, refer to the figure.
NOTE:
A screwdriver or hexagonal wrench [6 mm (0.24 in)] can be used
for adjustment.
Aiming Adjustment ProcedureINFOID:0000000006213993
1. Place the screen. NOTE:
 Stop the vehicle facing the wall.
 Place the board on a plain road vertically.
2. Face the vehicle with the screen. Maintain 10 m (32.8 ft) between the front fog lamp center and the
screen.
3. Start the engine. Turn the front fog lamp ON. NOTE:
Shut off the headlamp light with the board to pr event from illuminating the adjustment screen.
CAUTION:
Never cover the lens surface with a tape etc. The lens is made of resin.
4. Adjust the cutoff line height (A) with the aiming adjus tment screw so that the distance (X) between the hor-
izontal center line of front fog lamp (H) and (A) becomes 200 mm (7.87 in).
A: UP
B: DOWN
JPLIA0915ZZ
Revision: 2010 May2011 QX56

EXT-6
< SYMPTOM DIAGNOSIS >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
SYMPTOM DIAGNOSIS
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Work FlowINFOID:0000000006367800
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the c onditions that exist when the noise occurs. Use the Diag-
nostic Worksheet during the interview to document the facts and conditions when the noise occurs and any
customer comments. Refer to EXT-10, "
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 w hen 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 per forming a test drive with the customer.
 After identifying the type of noise, isolate the noise in terms of its characteristics. The noise characteristics
are provided so that the customer, service advis er, and technician use the same language when describing
the noise.
 Squeak – (Like tennis shoes on a clean floor) Squeak characteristics include the light contact / fast movement / brought on by road conditions / hard sur-
faces = high-pitched noise / softer surfaces = low-pitched noises / edge to surface = chirping
 Creak – (Like walking on an old wooden floor) Creak characteristics include firm contact / slow movement/twisting with a rotational movement / pitch
dependent on materials / often brought on by activity.
 Rattle – (Like shaking a baby rattle) Rattle characteristics include fast repeated contact / vibr ation or similar movement / loose parts/missing clip
or fastener / incorrect clearance.
 Knock – (Like a knock on a door) Knock characteristics include hollow sounds / someti mes repeating / often brought on by driver action.
 Tick – (Like a clock second hand) Tick characteristics include gentle contacting of light materials / loose components / can be caused by driver
action or road conditions.
 Thump – (Heavy, muffled knock noise)
Thump characteristics include softer knock / dull sounds often brought on by activity.
 Buzz – (Like a bumblebee) Buzz characteristics include high frequency rattle / firm contact.
 Often the degree of acceptable noise level varies depending upon the person. A noise that a technician may
judge as acceptable may be very irritating to a customer.
 Weather conditions, especially humidity and temperat ure, may have a great effect on noise level.
DUPLICATE THE NOISE AND TEST DRIVE
SBT842
Revision: 2010 May2011 QX56