2005 INFINITI FX35 ECU

SQUEAK AND RATTLE TROUBLE DIAGNOSES IP-5
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Revision: 2005 July 2005 FX
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: J39570, 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
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 IP-6, "
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 (J43980) 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.
Always check with the Parts Department for the latest parts information.
The following materials are contained in the NISSAN Squeak and Rattle Kit (J43980). 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) think,
50 × 50 mm (1.97 × 1.97 in)

SQUEAK AND RATTLE TROUBLE DIAGNOSES IP-7
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Revision: 2005 July 2005 FX
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 compartment.
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.

LAN-18
[CAN]
TROUBLE DIAGNOSES WORK FLOW
Revision: 2005 July 2005 FX
CAN Diagnostic Support MonitorAKS00CBP
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN FOR ECM
Display Results (Present)

OK: Normal

NG: Malfunction

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
SKIB0591E
“SELECT SYSTEM”
screen “CAN DIAG SUPPORT
MNTR” screen Description Present
ENGINE INITIAL DIAG Make sure that microcomputer in ECU works normally. OK/NG
TRANSMIT DIAG Make sure of normal transmission. OK/UNKWN
TCM Make sure of normal reception from TCM. OK/UNKWN
VDC/TCS/ABS Make sure of normal reception from ABS actuator and electric unit
(control unit). OK/UNKWN
METER/M&A Make sure of normal reception from unified meter and A/C amp. OK/UNKWN
ICC Make sure of normal reception from ICC unit. OK/UNKWN
BCM/SEC Make sure of normal reception from BCM. OK/UNKWN
IPDM E/R Make sure of normal reception from IPDM E/R. OK/UNKWN
AWD/4WD/e4WD AWD/4WD/e4WD is not diagnosed. UNKWN
EPS EPS is not diagnosed. UNKWN

TROUBLE DIAGNOSES WORK FLOW LAN-19
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DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN
FOR TCM
Display Results (Present)

OK: Normal

NG: Malfunction

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
PKIA9892E
“SELECT SYSTEM”
screen “CAN DIAG SUPPORT
MNTR” screen Description Present
A/T INITIAL DIAG Make sure that microcomputer in ECU works normally. OK/NG
TRANSMIT DIAG Make sure of normal transmission. OK/UNKWN
ECM Make sure of normal reception from ECM. OK/UNKWN
VDC/TCS/ABS Make sure of normal reception from ABS actuator and electric unit
(control unit). OK/UNKWN
METER/M&A Make sure of normal reception from unified meter and A/C amp. OK/UNKWN
ICC/e4WD Make sure of normal reception from ICC unit. OK/UNKWN
AWD/4WD Make sure of normal reception from AWD control unit. OK/UNKWN

LAN-20
[CAN]
TROUBLE DIAGNOSES WORK FLOW
Revision: 2005 July 2005 FX
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN
FOR DISPLAY CONTROL UNIT
Display Results (Present)

OK: Normal

NG: Malfunction

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
Display Results: Error Counter (Reference)

0: It is normal now.

1 ~ 50: Displays when it finds malfunction in the past even if it is normal or there is a malfunction at present. Also, display s when diag-
nosis is not performed. It increase like 0 →1→ 2...49 →50 after returning to the normal condition whenever IGN OFF →ON. If it is over
50, it is fixed to 50 until the self-diagnostic results are erased. Keep this condition until resetting it.
SKIB0645E
Unit name Diagnosis item Description “CAN DIAG
SUPPORT
MONITOR”
screen Error
counter
(Reference)
Display control unit CAN COMM Make sure that microcomputer in ECU works normally. OK/NG
0/1~50
CAN CIRC 1 Make sure of normal transmission. OK/UNKWN
CAN CIRC 2 Make sure of normal reception from BCM. OK/UNKWN
CAN CIRC 3 Make sure of normal reception from ECM. OK/UNKWN
CAN CIRC 4 CAN CIRC 4 is not diagnosed. OK/UNKWN
CAN CIRC 5 Make sure of normal reception from unified meter and A/C amp. OK/UNKWN
CAN CIRC 6 CAN CIRC 6 is not diagnosed. OK/UNKWN
CAN CIRC 7 Make sure of normal reception from IPDM E/R. OK/UNKWN
CAN CIRC 8 CAN CIRC 8 is not diagnosed. OK/UNKWN
CAN CIRC 9 CAN CIRC 9 is not diagnosed. OK/UNKWN

TROUBLE DIAGNOSES WORK FLOW LAN-21
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Revision: 2005 July 2005 FX
DESCRIPTION OF “CAN DIAG MNTR” SCREEN FOR DIS-
PLAY UNIT
Display Results (Present)

OK: Normal

NG: Malfunction

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
SKIB2447E
Unit name Diagnosis item Description “CAN DIAG MNTR” screen
Display unit CANCOMM Make sure that microcomputer in ECU works normally. OK/NG
CAN1 Make sure of normal transmission. OK/UNKWN
CAN2 Make sure of normal reception from BCM. OK/UNKWN
CAN3 Make sure of normal reception from ECM. OK/UNKWN
CAN4 CAN CIRC 4 is not diagnosed. OK/UNKWN
CAN5 Make sure of normal reception from unified meter and A/C amp. OK/UNKWN
CAN6 CAN CIRC 6 is not diagnosed. OK/UNKWN
CAN7 Make sure of normal reception from IPDM E/R. OK/UNKWN
CAN8 CAN CIRC 8 is not diagnosed. OK/UNKWN
CAN9 CAN CIRC 9 is not diagnosed. OK/UNKWN

LAN-22
[CAN]
TROUBLE DIAGNOSES WORK FLOW
Revision: 2005 July 2005 FX
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN
FOR AWD CONTROL UNIT
Display Results (Present)

OK: Normal

NG: Malfunction

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
PKIB5966E
“SELECT SYSTEM”
screen “CAN DIAG SUPPORT
MNTR” screen Description Present
ALL MODE AWD/
4WD INITIAL DIAG Make sure that microcomputer in ECU works normally. OK/NG
TRANSMIT DIAG Make sure of normal transmission. OK/UNKWN
VDC/TCS/ABS Make sure of normal reception from ABS actuator and electric
unit (control unit). OK/UNKWN
ECM Make sure of normal reception from ECM. OK/UNKWN
TCM Make sure of normal reception from TCM.
(Not available for CAN system diagnosis.) OK
METER/M&A Make sure of normal reception from unified meter and A/C amp. OK/UNKWN

TROUBLE DIAGNOSES WORK FLOW LAN-23
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Revision: 2005 July 2005 FX
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN FOR ICC UNIT
Display Results (Present)

OK: Normal

NG: Malfunction

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
PKIB5985E
“SELECT SYSTEM”
screen “CAN DIAG SUPPORT
MNTR” screen Description Present
ICC INITIAL DIAG Make sure that microcomputer in ECU works normally. OK/NG
TRANSMIT DIAG Make sure of normal transmission. OK/UNKWN
ECM Make sure of normal reception from ECM. OK/UNKWN
VDC/TCS/ABS Make sure of normal reception from ABS actuator and electric unit
(control unit). OK/UNKWN
TCM Make sure of normal reception from TCM. OK/UNKWN
METER/M&A METER/M&A is not diagnosed. UNKWN
LANE KEEP LANE KEEP is not diagnosed. UNKWN
ECM(l) Make sure of normal reception from ECM (as a laser radar sen-
sor).
(Not available for CAN system diagnosis.) OK/UNKWN
ICC SENSOR Make sure of normal reception from ICC sensor. OK/UNKWN
STRG STRG is not diagnosed. UNKWN
METER/M&A(l) Make sure of normal reception from combination meter (as a laser
radar sensor).
(Not available for CAN system diagnosis.) OK/UNKWN
ERROR(l) Make sure that the initial diagnosis and transmit diagnosis of laser
radar sensor work normally.
(Not available for CAN system diagnosis.) OK/UNKWN
LANE DETECTOR LANE DETECTOR is not diagnosed. UNKWN
TCM(l) TCM(l) is not diagnosed. UNKWN
BCM/SEC Make sure of normal reception from BCM. OK/UNKWN