air condition INFINITI QX56 2010 Factory Service Manual

GLASS HATCH AJAR SWITCHDLK-129
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
GLASS HATCH AJAR SWITCH
Diagnosis ProcedureINFOID:0000000005147000
Regarding Wiring Diagram information, refer to DLK-199, "Wiring Diagram—AUTOMATIC BACK DOOR SYS-
TEM—".
1.CHECK GLASS HATCH AJAR SWITCH INPUT SIGNAL
With CONSULT-III
Check glass hatch ajar switch ("TRNK OPN MNTR") in DATA MONITOR mode with CONSULT–III.
• When glass hatch is open:
• When glass hatch is closed:
Without CONSULT-III
Check voltage between BCM connector M19 terminal 42 and ground.
Is the inspection result normal?
YES >> System is OK.
NO >> GO TO 2
2.CHECK GLASS HATCH AJAR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect glass hatch ajar switch, BCM and back door control unit.
3. Check continuity between BCM connector (A) M19 te rminal 42 and glass hatch ajar switch connector (C)
D707 terminal 1.
4. Check continuity between back door control unit connector B55
(B) terminal 17 and glass hatch ajar switch connector (C) D707
terminal 1.
5. Check continuity between glass hatch ajar switch connector (C) D707 terminal 1 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3.CHECK GLASS HATCH AJAR SWITCH
1. Disconnect glass hatch ajar switch connector. TRNK OPN MNTR : ON
TRNK OPN MNTR : OFF
Connector Item
Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (–)
M19 BCM 42 Ground Open
↓
Closed 0
↓
Battery voltage
LIIA1149E
42 - 1 : Continuity should exist.
17 - 1 : Continuity should exist.
1 - Ground : Continuity should not exist.
ALKIA0667ZZ
Revision: April 20092010 QX56

DLK-130
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
GLASS HATCH AJAR SWITCH
2. Check continuity between glass hatch ajar switch connector terminal 1 and ground.
Is the inspection result normal?
YES >> Check glass hatch ajar switch case ground condition.
NO >> Replace glass hatch ajar s
witch, or repair or replace
harness.
Terminals Condition Continuity
Glass hatch ajar switch 1 – Ground Open
Yes
Closed No
ALKIA0668ZZ
Revision: April 20092010 QX56

BACK DOOR CLOSE (CLOSE) SWITCH SYSTEM
DLK-131
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
BACK DOOR CLOSE (C LOSE) SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000005147001
Regarding Wiring Diagram information, refer to DLK-199, "Wiring Diagram—AUTOMATIC BACK DOOR SYS-
TEM—".
1.BACK DOOR CLOSE SWITCH FUNCTION INSPECTION
Check back door close (close) s witch using switch operation.
Is the inspection result normal?
YES >> Back door close switch is OK.
NO >> GO TO 2
2.BACK DOOR CLOSE SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the back door close switch, check voltage between back door control unit connector B55 terminal 8 and
ground.
Is the inspection result normal?
YES >> Switch is OK.
NO >> GO TO 3
3.BACK DOOR CLOSE SWITCH CIRCUIT INSPECTION
1. Disconnect back door close switch and back door control unit connector.
2. Check continuity between back door control unit connector (A) B55 terminal 8 and back door close switch connector (B) B63
terminal 1.
3. Check continuity between back door control unit connector (A) B55 terminal 8 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair the harness between the back door close switch and the back door control unit.
4.BACK DOOR CLOSE SWITCH GROUND INSPECTION
Te r m i n a l s
Measuring condition Voltage (V)
(Approx.)
(+) (-)
8G ro u nd Back door
close switch ON
0
OFF Battery voltage
LIIA0805E
8 - 1 : Continuity should exist.
8 - Ground : Continuity should not exist.
ALKIA0669ZZ
Revision: April 20092010 QX56

BACK DOOR CLOSE (CANCEL) SWITCH SYSTEMDLK-133
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
BACK DOOR CLOSE (CANCEL) SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000005147002
Regarding Wiring Diagram information, refer to DLK-199, "Wiring Diagram—AUTOMATIC BACK DOOR SYS-
TEM—".
1.BACK DOOR CLOSE SWITCH FUNCTION INSPECTION
Check back door close (cancel) s witch using switch operation.
Is the inspection result normal?
YES >> Back door close switch is OK.
NO >> GO TO 2
2.BACK DOOR CLOSE (CANCEL) SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the back door close (cancel) switch, check volt- age between back door control uni t connector B55 terminal 13
and ground.
Is the inspection result normal?
YES >> Switch is OK.
NO >> GO TO 3
3.BACK DOOR CLOSE (CANCEL) SWITCH CIRCUIT INSPECTION
1. Disconnect back door close switch and back door control unit connector.
2. Check continuity between back door control unit connector (A) B55 terminal 13 and back door close switch connector (B) B63
terminal 5.
3. Check continuity between back door control unit connector (A) B55 terminal 13 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair the harness between the back door close switch and the back door control unit.
4.BACK DOOR CLOSE SWITCH GROUND INSPECTION
Te r m i n a l s
Measuring condition Voltage (V)
(Approx.)
(+) (-)
13 Ground Back door
close switch ON
0
OFF 5
LIIA1068E
13 - 5 : Continuity should exist.
13 - Ground : Continuity should not exist.
ALKIA0671ZZ
Revision: April 20092010 QX56

PINCH STRIP SYSTEMDLK-135
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
PINCH STRIP SYSTEM
Diagnosis ProcedureINFOID:0000000005147003
Regarding Wiring Diagram information, refer to DLK-199, "Wiring Diagram—AUTOMATIC BACK DOOR SYS-
TEM—".
1.PINCH STRIP SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the pinch strip, check voltage between back door control unit connector B55 terminals 19, 20 and ground.
Is the inspection result normal?
YES >> Switch is OK.
NO >> GO TO 2
2.PINCH STRIP CIRCUIT INSPECTION
1. Disconnect pinch strip and ba ck door control unit connector.
2. Check continuity between back door control unit connector (A) B55 terminals 5, 19 (RH) or 5, 20 (LH) and pinch strip connector
(B) D715 (RH), D517 (LH) terminals 1, 2.
3. Check continuity between pinch strip connector (B) D715 (RH), D517 (LH) terminals 1, 2 and ground.
Is the inspection result normal?
YES >> Replace the pinch strip.
NO >> Repair the harness between the pinc h strip and the back door control unit.
Te r m i n a l s
Measuring condition Voltage (V)
(Approx.)
(+) (-)
19 Ground Pinch strip RH operation 0
Other 4
20 Ground Pinch strip LH operation 0
Other 4
LIIA0811E
RH: 1 - 19 : Continuity should exist.
LH: 1 - 20 : Continuity should exist.
RH and LH 2 - 5 : Continuity should exist.
1 - Ground : Continuity should not exist.
2 - Ground : Continuity should not exist.
ALKIA0672ZZ
Revision: April 20092010 QX56

DLK-140
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR SWITCH
BACK DOOR SWITCH
Diagnosis ProcedureINFOID:0000000005147008
Regarding Wiring Diagram information, refer to
DLK-199, "Wiring Diagram—AUTOMATIC BACK DOOR SYS-
TEM—".
1.BACK DOOR AND GLASS HATCH SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the back door and glass hatch switch assembly (back door switch), check voltage between back door control
unit connector B55 terminal 26 and ground.
Is the inspection result normal?
YES >> Switch is OK.
NO >> GO TO 2
2.BACK DOOR AND GLASS HAT CH SWITCH CIRCUIT INSPECTION
1. Disconnect back door and glass hatch switch assemb ly (back door switch) and back door control unit.
2. Check continuity between back door control unit connector (A) B55 terminal 26 and back door and glass hatch switch assembly
(back door switch) connector (B) D706 terminal 3.
3. Check continuity between back door control unit connector (A) B55 terminal 26 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair the harness between the back door and gla ss hatch switch assembly (back door switch)
and the back door control unit.
3.BACK DOOR AND GLASS HAT CH SWITCH GROUND INSPECTION
Check continuity between back door and glass hatch switch assem-
bly (back door switch) connector D706 terminal 4 and ground.
Is the inspection result normal?
YES >> Replace the back door and glass hatch switch assembly (back door switch).
NO >> Repair the harness between the back door and glass hatch switch assembly (back door switch) and ground.
Te r m i n a l Measuring condition Voltage (V)
(Approx.)
(+) (-)
26 GroundPush the back door and glass
hatch switch assembly (back
door switch) (ON) 0
Other (OFF) Battery voltage
LIIA0833E
26 - 3 : Continuity should exist.
26 - Ground : Continuity should not exist.
ALKIA1791ZZ
4 - Ground : Continuity should exist.
ALKIA1792ZZ
Revision: April 20092010 QX56

DLK-148
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BCM (BODY CONTROL MODULE)
ECU DIAGNOSIS
BCM (BODY CONTROL MODULE)
Reference ValueINFOID:0000000005380581
VALUES ON THE DIAGNOSIS TOOL
Monitor Item
Condition Value/Status
AIR COND SW A/C switch OFF
OFF
A/C switch ON ON
AUT LIGHT SYS Outside of the room is dark
OFF
Outside of the room is bright ON
AUTO LIGHT SW Lighting switch OFF
OFF
Lighting switch AUTO ON
BACK DOOR SW Back door closed
OFF
Back door opened ON
CARGO LAMP SW Cargo lamp switch OFF
OFF
Cargo lamp switch ON ON
CDL LOCK SW Door lock/unlock switch does not operate
OFF
Press door lock/unlock switch to the LOCK side ON
CDL UNLOCK SW Door lock/unlock switch does not operate
OFF
Press door lock/unlock switch to the UNLOCK side ON
DOOR SW-AS Front door RH closed
OFF
Front door RH opened ON
DOOR SW-DR Front door LH closed
OFF
Front door LH opened ON
DOOR SW-RL Rear door LH closed
OFF
Rear door LH opened ON
DOOR SW-RR Rear door RH closed
OFF
Rear door RH opened ON
ENGINE RUN Engine stopped
OFF
Engine running ON
FR FOG SW Front fog lamp switch OFF
OFF
Front fog lamp switch ON ON
FR WASHER SW Front washer switch OFF
OFF
Front washer switch ON ON
FR WIPER LOW Front wiper switch OFF
OFF
Front wiper switch LO ON
FR WIPER HI Front wiper switch OFF
OFF
Front wiper switch HI ON
FR WIPER INT Front wiper switch OFF
OFF
Front wiper switch INT ON
FR WIPER STOP Any position other than front wiper stop position
OFF
Front wiper stop position ON
HAZARD SW When hazard switch is not pressed
OFF
When hazard switch is pressed ON
Revision: April 20092010 QX56

SQUEAK AND RATTLE TROUBLE DIAGNOSESDLK-223
< SYMPTOM DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Work FlowINFOID:0000000005147043
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist when the noise occurs.Use the Diag-
nostic Worksheet during the interv iew to document the facts and conditions when the noise occurs and any
customer's comments; refer to DLK-227, "
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 descr iption 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, be sure to diagnose and repair the noise that the customer is
concerned about. This can be accomplished by test driving 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 bumble bee)
Buzz characteristics include high frequency rattle/firm contact.
• Often the degree of acceptable noise level will vary depending upon the person. A noise that you may judge as acceptable may be very irritating to the customer.
• Weather conditions, especially humidity and temperature, 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 you confirm the repair.
SBT842
Revision: April 20092010 QX56

DLK-224
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
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-
clutch on M/T model, drive position on A/T model).
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 you suspect the noise is coming from.
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 you suspect is causing 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 with your hand by touching the component(s) that you suspect is (are) causing the
noise.
• placing a piece of paper between components that you suspect are causing the noise.
• looking for loose components and contact marks. Refer to DLK-225, "
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 urethane tape. A Nissan Squeak and Rattle Kit (J-43980) is available through your authorized Nissan Parts Depart-
ment.
CAUTION:
Do not 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 ×1.97 in)
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: April 20092010 QX56

SQUEAK AND RATTLE TROUBLE DIAGNOSESDLK-225
< SYMPTOM DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
Insulates where slight movement is present. Ideal for instrument panel applications.
SILICONE GREASE
Used in place of UHMW tape that will be visible or not fit. Will only last a few months.
SILICONE SPRAY
Use when grease cannot be applied.
DUCT TAPE
Use to eliminate movement.
CONFIRM THE REPAIR
Confirm that the cause of a noise is repaired by test driving the vehicle. Operate the vehicle under the same
conditions as when the noise originally occurred. Refer to the notes on the Diagnostic Worksheet.
Inspection ProcedureINFOID:0000000005147044
Refer to Table of Contents for specific component removal and installation information.
INSTRUMENT PANEL
Most incidents are caused by contact and movement between:
1. The cluster lid A and instrument panel
2. Acrylic lens and combination meter housing
3. Instrument panel to front pillar garnish
4. Instrument panel to windshield
5. Instrument panel mounting pins
6. Wiring harnesses behind the combination meter
7. A/C defroster duct and duct joint
These incidents can usually be located by tapping or moving the components to duplicate the noise or by
pressing on the components while driving to stop the noi se. Most of these incidents can be repaired by apply-
ing felt cloth tape or silicon spray (in hard to reach areas). Urethane pads can be used to insulate wiring har-
ness.
CAUTION:
Do not use silicone spray to isolate a squeak or ra ttle. If you saturate the area with silicone, you will
not be able to recheck the repair.
CENTER CONSOLE
Components to pay attention to include:
1. Shifter assembly cover to finisher
2. A/C control unit and cluster lid C
3. Wiring harnesses behind audio and A/C control unit
The instrument panel repair and isolation pr ocedures also apply to the center console.
DOORS
Pay attention to the:
1. Finisher and inner panel making a slapping noise
2. Inside handle escutcheon to door finisher
3. Wiring harnesses tapping
4. Door striker out of alignment causing a popping noise on starts and stops
Tapping or moving the components or pressing on them while driving to duplicate the conditions can isolate
many of these incidents. You can usually insulate the ar eas with felt cloth tape or insulator foam blocks from
the Nissan Squeak and Rattle Kit (J-43980) to repair the noise.
TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid dampers out of adjustment
2. Trunk lid striker out of adjustment
3. The trunk lid torsion bars knocking together
4. A loose license plate or bracket
Revision: April 20092010 QX56