air condition INFINITI FX35 2007 Service Manual

BL-8
SQUEAK AND RATTLE TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
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 location of the noise. This information can be used to
duplicate the same conditions when you confirm the repair.
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 vehicle slowly on an undulating or rough road to stress the
vehicle body.
CHECK RELATED SERVICE BULLETINS
After verifying the customer concern or symptom, check ASIST for Technical Service Bulletins (TSBs) related
to that concern or symptom.
If a TSB relates to the symptom, follow 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 pinpoint 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 only be eliminated
temporarily.

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 BL-9, "
Generic Squeak and Rattle Troubleshooting" .
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 loosening 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 your authorized Nissan Parts
Department.
CAUTION:
Do not use excessive force as many components are constructed of plastic and may be damaged.
NOTE:
Always check with the Parts Department 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)

SQUEAK AND RATTLE TROUBLE DIAGNOSIS BL-9
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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 occur. 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
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.
Note: 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.
Generic Squeak and Rattle TroubleshootingNIS001LL
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 noise. 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 rattle. 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 procedures 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 areas with felt cloth tape or insulator foam blocks from
the Nissan Squeak and Rattle Kit (J-43980) to repair the noise.

BL-10
SQUEAK AND RATTLE TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
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 dumpers 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
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area can often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it's important to note the position the seat is in and the load placed on the seat when
the noise is present. These conditions should be duplicated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of these incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger room.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.

POWER DOOR LOCK SYSTEM BL-37
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Revision: 2006 July 2007 FX35/FX45
Work FlowNIS001M4
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to BL-22, "
System Description" .
3. According to the trouble diagnosis chart by symptom, repair or replace the cause of the malfunction. Refer to BL-38, "
Trouble Diagnosis Chart by Symptom" .
4. Does power door lock system operate normally? YES: GO TO 5.
NO: GO TO 3.
5. INSPECTION END
CONSULT-II Function (BCM)NIS001M5
CONSULT-II can display each diagnostic item using the diagnostic test modes shown.
CONSULT-II START PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
CONSULT-II APPLICATION ITEMS
Work Support
Data Monitor
*: With Intelligent Key system BCM diagnosis
test item Check item diagnosis test mode Content
Door lock DATA MONITOR Displays the input data of BCM real time.
ACTIVE TEST Gives a drive signal to a load to check the operation.
Work item Description
DOOR LOCK-UNLOCK SET Select unlock mode can be changed in this mode. Selects ON-OFF of select unlock mode.
ANTI-LOCK OUT SET Key reminder door mode can be changed in this mode. Selects ON-OFF of key reminder door
mode.
Monitor item Content
IGN ON SW Indicates [ON/OFF] condition of ignition switch in ON position.
KEY ON SW Indicates [ON/OFF] condition of key switch.
CDL LOCK SW Indicates [ON/OFF] condition of lock signal from door lock and unlock switch.
CDL UNLOCK SW Indicates [ON/OFF] condition of unlock signal from door lock and unlock switch.
DOOR SW-DR Indicates [ON/OFF] condition of front door switch driver side.
DOOR SW-AS Indicates [ON/OFF] condition of front door switch passenger side.
DOOR SW-RR Indicates [ON/OFF] condition of rear door switch RH.
DOOR SW-RL Indicates [ON/OFF] condition of rear door switch LH.
BACK DOOR SW Indicates [ON/OFF] condition of back door switch.
KEY CYL LK-SW Indicates [ON/OFF] condition of lock signal from key cylinder.
KEY CYL UN-SW Indicates [ON/OFF] condition of unlock signal from key cylinder.
KEYLESS LOCK Indicates [ON/OFF] condition of lock signal from key fob.
KEYLESS UNLOCK Indicates [ON/OFF] condition of unlock signal from key fob.
I-KEY LOCK* Indicates [ON/OFF] condition of lock signal from door request switch.
I-KEY UNLOCK* Indicates [ON/OFF] condition of unlock signal from door request switch.

POWER DOOR LOCK SYSTEM BL-41
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Revision: 2006 July 2007 FX35/FX45
2. CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door switch and BCM connector.
3. Check continuity between door switch connector B26, B36, B46, B206 terminals 1 and BCM connector M3, B14 terminals 62, 12,
63, 13.
4. Check continuity between door switch connector B26, B36, B46, B206 terminal 1 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK DOOR SWITCH
Check continuity between door switch terminal 1 and ground part of
door switch.
OK or NG
OK >> Check door switch case ground condition.
NG >> Replace door switch. Driver side door
1 (W) – 62 (W) : Continuity should exist.
Passenger side door
1 (SB) – 12 (P/B) : Continuity should exist.
Rear door LH
1 (P) – 63 (P) : Continuity should exist.
Rear door RH
1 (P) – 13 (P/L) : Continuity should exist.
1 (W, SB, P) – Ground : Continuity should not exist.
PIIA7004E
Terminal Door switch condition Continuity
1 Ground part of door switch Pushed No
Released Yes
PIIA3351E

POWER DOOR LOCK SYSTEM BL-43
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Revision: 2006 July 2007 FX35/FX45
2. CHECK BACK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect back door switch connector.
3. Check voltage between back door switch connector D109 termi- nal 7 and ground. (Check harness for open.)
4. Check continuity between back door switch connector D109 ter- minal 7 and ground. (Check harness for short.)
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK BACK DOOR SWITCH
Check continuity between back door switch terminals 7 and 8.
OK or NG
OK >> GO TO 4.
NG >> Replace back door closure motor (door switch). 7 (L) – Ground : Approx. 9V
PIIA6474E
7 (L) – Ground : Continuity should not exist.
PIIA6475E
Terminal Back door condition Continuity
78 Closed No
Opened Yes
PIIA6476E

BL-44
POWER DOOR LOCK SYSTEM
Revision: 2006 July 2007 FX35/FX45
4. CHECK BACK DOOR SWITCH GROUND HARNESS
Check continuity between back door switch connector D109 terminal
8 and ground.
OK or NG
OK >> Check harness connection.
NG >> Repair or replace harness.
Check Key SwitchNIS001M9
1. CHECK KEY SWITCH INPUT SIGNAL
With CONSULT-II
Check ignition key switch “KEY ON SW” in “DATA MONITOR” mode
with CONSULT-II.

When key is inserted in ignition key cylinder

When key is removed from ignition key cylinder
Without CONSULT-II
Check voltage between BCM connector and ground.
OK or NG
OK >> Key switch circuit is OK.
NG >> GO TO 2. (With Intelligent Key)
NG >> GO TO 3. (Without Intelligent Key) 8 (B) – Ground : Continuity should exist.
PIIA6477E
KEY ON SW : ON
KEY ON SW : OFF
PIIA6470E
Connector Terminal
Condition of key switch Voltage (V)
Approx.
(+) (-)
M3 37
(B/W) Ground Key is inserted in IGN
key cylinder. Battery voltage
Key is removed from IGN
key cylinder. 0
PIIA6378E

POWER DOOR LOCK SYSTEM BL-49
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2. CHECK OUTPUT SIGNAL
1. Connect BCM and door lock actuator (driver side) connector.
2. Check voltage between BCM connector M4 terminals 44, 50 and ground.
OK or NG
OK >> Check harness connection.
NG >> Replace BCM.
Check Door Lock Actuator (Passenger Side and Rear LH/RH)NIS001MC
1. CHECK DOOR LOCK ACTUATOR CIRCUIT
1. Disconnect BCM and each door lock actuator connectors.
2. Check continuity between BCM connector M4 terminals 50, 51 and front door lock actuator passenger side, rear door lock actu-
ator LH/RH connectors D40, D52, D72 terminals 2, 3.
3. Check continuity between BCM connector M4 terminals 50, 51 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
Con-
nector Terminal
(Wire color) Condition Voltage (V)
(Approx.)
(+) (–)
M4 44
(Y)
Ground Driver door lock/unlock
switch is turned to
UNLOCK. 0
→ Battery voltage → 0
50
(PU) Driver door lock/unlock
switch is turned to
LOCK. 0
→ Battery voltage → 0
PIIA6383E
50 (PU) – 3 (PU) : Continuity should exist.
51 (W/B) – 2 (L or Y) : Continuity should exist.
50 (PU) – Ground : Continuity should not exist.
51 (W/B) – Ground : Continuity should not exist.
PIIA6540E

BL-50
POWER DOOR LOCK SYSTEM
Revision: 2006 July 2007 FX35/FX45
2. CHECK DOOR LOCK ACTUATOR SIGNAL
Check voltage between BCM connector M4 terminals 50, 51 and
ground.
OK or NG
OK >> Replace front door lock assembly (passenger side) or rear door lock actuator LH/RH.
NG >> Replace BCM.
Check Fuel Lid Lock Actuator NIS001MD
1. CHECK FUEL LID LOCK ACTUATOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM and fuel lid lock actuator connector.
3. Check continuity between BCM connector M4 terminals 44, 50 and fuel lid lock actuator connector B70 terminals 1, 2.
4. Check continuity between BCM connector M4 terminals 44, 50 and ground.
OK or NG
OK >> Replace fuel lid lock actuator.
NG >> Repair or replace harness.
Con-
nector Terminal
(Wire color) Condition Voltage (V)
(Approx.)
(+) (–)
M4 50
(PU) Ground Door lock/unlock switch
is turned to LOCK. 0
→ Battery voltage → 0
51
(W/B) Door lock/unlock switch
is turned to UNLOCK. 0
→ Battery voltage → 0
PIIA6385E
44 (Y) – 2 (L) : Continuity should exist.
50 (PU) – 1 (PU) : Continuity should exist.
44 (Y) – Ground : Continuity should not exist.
50 (PU) – Ground : Continuity should not exist.
PIIA6386E

BL-72
REMOTE KEYLESS ENTRY SYSTEM
Revision: 2006 July 2007 FX35/FX45
2. CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door switch and BCM connector.
3. Check continuity between door switch connector B26, B36, B46, B206 terminals 1 and BCM connector M3, B14 terminals 62, 12,
63, 13.
4. Check continuity between door switch connector B26, B36, B46, B206 terminal 1 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK DOOR SWITCH
Check continuity between door switch terminal 1 and ground part of
door switch.
OK or NG
OK >> Check door switch case ground condition.
NG >> Replace door switch. Driver side door
1 (W) – 62 (W) : Continuity should exist.
Passenger side door
1 (SB) – 12 (P/B) : Continuity should exist.
Rear door LH
1 (P) – 63 (P) : Continuity should exist.
Rear door RH
1 (P) – 13 (P/L) : Continuity should exist.
1 (W, SB, P) – Ground : Continuity should not exist.
PIIA7004E
Terminal Door switch condition Continuity
1 Ground part of door switch Pushed No
Released Yes
PIIA3351E