Air INFINITI QX56 2004 Factory Service Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2004, Model line: QX56, Model: INFINITI QX56 2004Pages: 3371, PDF Size: 78.5 MB
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RF-6
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Revision: August 20072004 QX56
INSULATOR (Light foam block)
80845-71L00: 30 mm (1.18 in) thick, 30×50 mm (1.18×1.97 in)
FELT CLOTH TAPE
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 TroubleshootingEIS0 05 TV
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 silicone 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.
Page 2808 of 3371
SQUEAK AND RATTLE TROUBLE DIAGNOSES
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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 bumpers 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. Sun visor shaft shaking in the holder
3. Front or rear windshield touching headliner 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.
OVERHEAD CONSOLE (FRONT AND REAR)
Overhead console noises are often caused by the console panel clips not being engaged correctly. Most of
these incidents are repaired by pushing up on the console at the clip locations until the clips engage.
In addition look for:
1. Loose harness or harness connectors.
2. Front console map/reading lamp lens loose.
3. Loose screws at console attachment points.
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.
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SUNROOF
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Revision: August 20072004 QX56
Terminals and Reference Values for BCMEIS002WN
Terminals and Reference Values for Sunroof Motor AssemblyEIS0 02 WO
Work FlowEIS002WP
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to RF-10, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause or replace of the malfunction.
Refer to RF-17, "
Trouble Diagnosis Chart by Symptom" .
4. Does sunroof system operate normally? If Yes, GO TO 5, If No, GO TO 3.
5. Inspection End.
Terminal Wire Color Item ConditionVoltage (V)
(Approx.)
12 R/L Front door switch RH signalON (door open) 0
OFF (door closed) Battery voltage
38 W/L Ignition power supply Ignition switch ON Battery voltage
47 SB Front door switch LH signalON (door open) 0
OFF (door closed) Battery voltage
67 B Ground — —
68 W/L RAP signalIgnition switch ON Battery voltage
Within 45 seconds after ignition switch is
turned OFF Battery voltage
When front door LH or RH is open while
retained power is operating0
69 W/R Power window power supply — Battery voltage
70 W/B BAT power supply — Battery voltage
Terminal Wire Color Item ConditionVoltage (V)
(Approx.)
1 W/L RAP signalIgnition switch ON Battery voltage
Within 45 seconds after ignition switch is
turned OFFBattery voltage
When front door LH or RH is open while
retained power is operating0
3 P/W Sunroof switch CLOSE signalIgnition switch ON and sunroof switch
CLOSE position0
Other than above Battery voltage
4OSunroof switch
TILT UP
signalIgnition switch ON and sunroof switch in
TILT UP position0
Other than above Battery voltage
5 W/R BAT power supply — Battery voltage
7 B Ground — —
8 Y Ground signal — —
9 P Sunroof switch OPEN signalIgnition switch ON and sunroof switch
OPEN position0
Other than above Battery voltage
10 L/RSunroof switch
TILT DOWN
signalIgnition switch ON and sunroof switch in
TILT DOWN position0
Other than above Battery voltage
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SUNROOF
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Revision: August 20072004 QX56
4. Touch "RETAINED PWR".
5. Select diagnosis mode. "DATA MONITOR", "ACTIVE TEST" and
"WORK SUPPORT" are available.
Work Support EIS002WT
Active TestEIS002WS
Data MonitorEIS002WR
Trouble Diagnosis Chart by SymptomEIS002WU
LIIA0163E
BCIA0031E
Work item Description
RETAINED PWR SETRAP signal’s power supply period can be changed by mode setting. Select RAP signal’s
power supply period between the following three mode settings:
MODE 1 (45 sec.) / MODE 2 (OFF) / MODE 3 (2 min.)
Test item Description
RETAINED PWRThis test is able to supply RAP signal (power) from BCM to power window system, power
sunroof system. Those systems can be operated when turning on “RETAINED PWR” on
CONSULT-II screen even if the ignition switch is turned OFF.
NOTE:
During this test, CONSULT-II can be operated with ignition switch “OFF” position.
“RETAINED PWR” should be turned “ON” or “OFF” on CONSULT-II screen when
ignition switch ON. Then turn ignition switch OFF for checking retained power
operation. CONSULT-II might be stuck if “RETAINED PWR” is turned “ON” or “OFF”
on CONSULT-II screen when ignition switch is OFF.
Monitored item Description
IGN ON SW Indicates [ON/OFF] condition of ignition 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.
Symptom Diagnostic procedure and repair order Refer to page
Sunroof does not operate.1. Sunroof motor assembly power supply and
ground circuit checkRF-20
2. Sunroof switch system checkRF-19
3. BCM power supply and ground circuit checkRF-18
4. Replace sunroof motor assemblyRF-27
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RF-18
SUNROOF
Revision: August 20072004 QX56
BCM Power Supply and Ground Circuit CheckEIS002WV
1. CHECK FUSE
Check the following BCM fuse and fusible link.
NOTE:
Refer to RF-10, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of problem before installing new fuse. Refer to PG-4,
"POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connectors.
3. Check voltage between BCM connectors M18 and M20 termi-
nals 38, 70 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
Check continuity between BCM connector M20 terminals 67 and
ground.
OK or NG
OK >> Power supply and ground circuits are OK.
NG >> Repair or replace harness.
Retained power operation does not operate properly.1. Check the retained power operation mode settingRF-112. BCM power supply and ground circuit checkRF-18
3. Door switch checkRF-22
4. Replace sunroof motor assemblyRF-27
Motor does not stop at the sunroof fully-open or fully-closed
position.1. Initialization procedure checkRF-11
2. Replace sunroof motor assemblyRF-27
Sunroof does not do the interruption detection. 1. Replace sunroof motor assemblyRF-27
Symptom Diagnostic procedure and repair order Refer to page
Component Parts Terminal No. (SIGNAL) Ampere No. Location
BCM38 (IGN power supply) 10A 59 Fuse and relay box
70 (BAT power supply) 50A f Fuse and fusible link box
ConnectorTerminals
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
M18 38 (W/L)
GroundIgnition switch ON
Battery voltage
M20 70 (W/B) Ignition switch OFF
WIIA0229E
Connector Terminals (Wire color) Continuity
M20 67 (B) Ground Yes
WIIA0230E
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SUNROOF
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Sunroof Switch System CheckEIS002WW
1. CHECK SUNROOF MOTOR ASSEMBLY INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between sunroof motor assembly connector and
ground.
OK or NG
OK >> Replace Sunroof Motor Assembly. Refer to RF-27, "SUNROOF MOTOR" .
NG >> GO TO 2.
2. CHECK HARNESS CONTINUITY
1. Disconnect sunroof motor assembly connector.
2. Check continuity between sunroof motor assembly connector R4 (A) terminals 3, 4, 8, 9 and 10 and sun-
roof switch connector R104 (B) terminals 1, 2, 3, 4 and 6.
3. Check continuity between sunroof motor assembly connector
R4 (A) terminals 3, 4, 8, 9 and 10 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between sunroof motor assembly and sunroof switch.
ConnectorTerminal
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
R43 (P/W)
GroundSunroof switch in
CLOSE position0
Other than aboveBattery
voltage
4 (O)Sunroof switch in TILT
UP position0
Other than aboveBattery
voltage
9 (P)Sunroof switch in
OPEN position0
Other than aboveBattery
voltage
10 (L/R)Sunroof switch in TILT
DOWN position0
Other than aboveBattery
voltage
WIIA0249E
3 (P/W) - 1 (P/W) : Continuity should exist.
4 (O) - 4 (O) : Continuity should exist.
8 (Y) - 2 (Y) : Continuity should exist.
9 (P) - 3 (P) : Continuity should exist.
10 (L/R) - 6 (L/R) : Continuity should exist.
3 (P/W) - Ground : Continuity should not exist.
4 (O) - Ground : Continuity should not exist.
8 (Y) - Ground : Continuity should not exist.
9 (P) - Ground : Continuity should not exist.
10 (L/R) - Ground : Continuity should not exist.
WIIA0744E
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SUNROOF
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2. CHECK SUNROOF MOTOR CIRCUIT HARNESS
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM connector M20 terminals 68 and
69 and sunroof motor assembly connector R4 terminals 1 and 5.
4. Check continuity between BCM connector M20 terminal 68, 69
and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-19, "Removal and Installation of BCM" .
NG >> Repair or replace harness between BCM and sunroof motor assembly.
3. CHECK GROUND CIRCUIT
Check continuity between sunroof motor assembly connector R4 terminal 7 and ground.
OK or NG
OK >> Sunroof motor assembly power supply and ground cir-
cuits are OK.
NG >> Repair or replace harness.68 (W/L) - 1 (W/L) : Continuity should exist.
69 (W/R) - 5 (W/R) : Continuity should exist.
68 (W/L) - Ground : Continuity should not exist.
69 (W/R) - Ground : Continuity should not exist.
LIIA2251E
7 (B) - Ground : Continuity should exist.
WIIA0251E
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RF-22
SUNROOF
Revision: August 20072004 QX56
Door Switch CheckEIS002WY
1. CHECK DOOR SWITCH INPUT SIGNAL
With CONSULT-II
Check door switches (“DOOR SW-DR” and “DOOR SW-AS”) in “DATA MONITOR” mode with CONSULT-II.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Check voltage between BCM connector and ground.
OK or NG
OK >> Door switches are OK.
NG >> GO TO 2.
2. CHECK DOOR SWITCH CIRCUIT
1. Disconnect front door switches and BCM connectors.
2. Check continuity between front door switch connector B8 (LH) or B108 (RH) terminal 2 and BCM connec-
tor M18, M19 terminals 12 and 47.
3. Check continuity between front door switch connector B8 (LH)
or B108 (RH) terminal 2 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between BCM and door switch.
Monitor item Condition
DOOR SW-DROPEN : ON
CLOSE : OFF
DOOR SW-ASOPEN : ON
CLOSE : OFF
PIIA2464E
Item ConnectorTe r m i n a l s ( W i r e
color)
ConditionVoltage (V)
(Approx.)
(+) (–)
RH M18 12 (R/L)
GroundDoor Open
(switch closed)0
Door Closed
(switch open)Battery
voltage
LH M19 47 (SB)Door Open
(switch closed)0
Door Closed
(switch open)Battery
voltage
WIIA0234E
Front door switch LH
2 (SB) - 47 (SB) : Continuity should exist.
Front door switch RH
2 (R/L) - 12 (R/L) : Continuity should exist.
2 (SB or R/L) - Ground : Continuity should not exist.
WIIA0235E
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NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
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NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEDS002JJ
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: Applicable Reference page
RFD-17RFD-19RFD-19RFD-12—
MA-10, "
Fluids and Lubricants
"
PR-3, "
NVH Troubleshooting Chart
"
FA X - 4
(FAX), RAX-4
(RAX), FSU-4
(FSU), RFD-5
(RSU)
WT-3, "
NVH Troubleshooting Chart
"
WT-3, "
NVH Troubleshooting Chart
"
FA X - 4 , "
NVH Troubleshooting Chart
" (front)
RAX-4, "
NVH Troubleshooting Chart
" (rear)
BR-5, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Rough gear tooth
Improper gear contact
Tooth surfaces worn
Incorrect backlash
Companion flange excessive runout
Improper gear oil
PROPELLER SHAFT
AXLE AND SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom FINAL DRIVE Noise×××××××××××××
Page 2844 of 3371
REAR FINAL DRIVE ASSEMBLY
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COMPANION FLANGE RUNOUT
Mount the dial gauge indicator so the dial gauge needle is positioned
on the propeller shaft mounting surface. Rotate the companion
flange and measure the runout as shown.
If runout is not within specification, remove the companion
flange, rotate 90° in relation to the drive pinion, and install the
companion flange using a new drive pinion nut. Tighten the drive
pinion nut to the minimum specified torque. Final drive pinion nut
torque will be determined when adjusting the total preload. Refer
to RFD-12, "
TOTAL PRELOAD" .
CAUTION:
The drive pinion nut is not reusable. Use a new drive pinion nut for installation.
If runout is not within specification after rotating the companion flange 90° on the drive pinion, replace the
companion flange. Recheck the companion flange runout.
If the new companion flange runout is not within specification, inspect the drive pinion bearing and the
drive pinion. Repair as necessary.
CAUTION:
Clean all of the rust and dirt off of the companion flange surface before measuring the companion
flange runout.
TOOTH CONTACT
Check the tooth contact. Refer to RFD-19, "TOOTH CONTACT" .
Disassembly and AssemblyEDS002JP
REMOVAL OF DIFFERENTIAL CASE ASSEMBLY
1. Use two 45 mm (1.77 in) spacers to mount the gear carrier on
Tool.
2. For installation, paint match marks on one side of the bearing
caps as shown.
NOTE:
Bearing caps are line-bored for initial assembly. Replace the
bearing caps in their original positions.Companion flange runout : 0.08 mm (0.003 in) or less
Tool number : KV40104000 ( — )
Drive pinion nut : 167 - 372 N·m (17 - 38 kg-m,
124 - 274 ft-lb)
WDIA0062E
Tool number : KV38100800 (J-25604–01)
SPD8 88
SPD8 89