2004 INFINITI QX56 change time

RFD-24
REAR FINAL DRIVE ASSEMBLY
Revision: August 20072004 QX56
6. Measure the drive gear-to-drive pinion backlash with a dial indi-
cator at several points.

If the backlash is less than specification, adjust the washer thickness. Decrease the thickness of the left
washer and increase the thickness of the right washer by the same amount.

If the backlash is greater than specification, adjust the washer thickness. Increase the thickness of the
left washer and decrease the thickness of the right washer by the same amount.

Never change the total amount of the washers as it will change the bearing preload.
7. Check the total preload using Tool.
When checking the preload, turn the drive pinion in both direc-
tions several times to seat the bearing rollers correctly.

If the preload is greater than specification, remove the same amount of washer thickness from each
side.

If the preload is less than specification, add the same amount of washer thickness to each side.

Never add or remove a different amount of washer thickness from each side. A difference in the amount
of washer thickness will change the drive gear-to-drive pinion backlash.
8. Recheck the drive gear-to-drive pinion backlash. Increase or decrease in thickness of the washers will
change the drive gear-to-drive pinion backlash.

Check whether the backlash varies excessively in different places. Foreign matter may be caught
between the drive gear and the differential case causing the variation in backlash.

The backlash can vary greatly even when the drive gear runout is within specification. To correct this
variation, replace the hypoid gear set or differential case.
9. Check runout of drive gear using a dial indicator.
10. Check the tooth contact.
Refer to RFD-19, "
TOOTH CONTACT" . Drive gear to drive pinion backlash : 0.13 - 0.18 mm
(0.0051 - 0.0070 in)
SPD5 13
Tool number : ST3127S000 (J-25765-A)
SPD8 84
Total preload : 2.05 - 4.11 N·m (0.21 - 0.42 kg-m, 19 - 36 in-lb)
Runout limit : 0.05 mm (0.0020 in) or less
SPD5 24

RSU-28
REAR SUSPENSION ASSEMBLY
Revision: August 20072004 QX56

Check with the manufacturer of your specific alignment machine for their recommended Service/Cali-
bration Schedule.
THE ALIGNMENT PROCESS
IMPORTANT: Use only the alignment specifications listed in this Service Manual. Refer to RSU-47, "Wheel
Alignment" .
1. When displaying the alignment settings, many alignment machines use “indicators”: (Green/red, plus or
minus, Go/No Go). Do NOT use these indicators.

The alignment specifications programmed into your alignment machine that operate these indicators
may not be correct.

This may result in an ERROR.
2. Some newer alignment machines are equipped with an optional “Rolling Compensation” method to “com-
pensate” the sensors (alignment targets or head units). Do NOT use this “Rolling Compensation”
method.

Use the “Jacking Compensation” method. After installing the alignment targets or head units, raise the
vehicle and rotate the wheels 1/2 turn both ways.

See Instructions in the alignment machine you are using for more information.
CAMBER
1. Measure camber of both the right and left wheels with a suitable
alignment gauge and adjust as necessary to specification.
2. If outside of the specified value, adjust the camber using the
adjusting bolt in the front lower link.
CAUTION:
After adjusting the camber then check the toe-in.
NOTE:
Camber changes about 5' minutes with each graduation of the
adjusting bolt.
3. Tighten the adjusting bolt nuts to specification.
TOE-IN
1. Bounce the rear of the vehicle up and down two to three times to stabilize the vehicle height. Refer to
RSU-48, "
Wheelarch Height (Unladen*1 )" .
2. Push the vehicle straight ahead about 5 m (16 ft).
3. Put a mark on the base line of the tread (rear side) of both of the
tires at the same height as the center of the hub. This will be the
measuring points.
4. Measure the distance “A” (rear side) across from tire to tire.Camber : Refer to RSU-47, "
Wheel Alignment" .
SRA0 96 A
LEIA0041E
SFA614B

SE-8
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Revision: August 20072004 QX56
TRU NK
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/HEADLINER
Noises in the sunroof/headliner 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 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 lense loose.
3. Loose screws at console attachment points.
SEATS
When isolating seat noise it is 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.

SRS-18
TROUBLE DIAGNOSIS
Revision: August 20072004 QX56
CONSULT-II Function (AIR BAG)EHS001BB
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II FunctionEHS000WE
HOW TO CHANGE SELF-DIAGNOSIS MODE WITH CONSULT-II
From User Mode to Diagnosis Mode
After selecting “AIR BAG” on the “SELECT SYSTEM” screen, User mode automatically changes to Diagnosis
mode.
From Diagnosis Mode to User Mode
To return to User mode from Diagnosis mode, touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears, Diagnosis mode automatically changes to User mode.
AIR BAG diagnostic mode Description
SELF-DIAG [CURRENT]A current Self-diagnosis result (also indicated by the number of warning lamp flashes in the Diagnosis
mode) is displayed on the CONSULT-II screen in real time. This refers to a malfunctioning part requir-
ing repairs.
SELF-DIAG [PAST]Diagnosis results previously stored in the memory are displayed on the CONSULT-II screen. The
stored results will remain until memory erasing is executed.
TROUBLE DIAG RECORDWith TROUBLE DIAG RECORD, diagnosis results previously erased by a reset operation can be dis-
played on the CONSULT-II screen.
ECU DISCRIMINATED NO.The air bag diagnosis sensor unit for each vehicle
model is assigned with its own, individual classifi-
cation number. This number will be displayed on
the CONSULT-II screen, as shown. When replac-
ing the air bag diagnosis sensor unit, refer to the
part number for the compatibility. After installation,
replacement with a correct unit can be checked by
confirming this classification number on the CON-
SULT-II screen.
For INFINITI MODEL JA60, the air bag diagno-
sis sensor unit discriminated number assigned
is F615.
ARS3 66
SRS8 03
SRS8 04

TROUBLE DIAGNOSIS
SRS-19
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HOW TO ERASE SELF-DIAGNOSIS RESULTS

“SELF-DIAG [CURRENT]”
A current self-diagnosis result is displayed on the CONSULT-II
screen in real time.
After the malfunction is repaired completely, no malfunction is
detected on “SELF-DIAG [CURRENT]”.

“SELF-DIAG [PAST]”
Return to the “SELF-DIAG [CURRENT]” CONSULT-II screen by
touching “BACK” key of CONSULT-II and select “SELF-DIAG
[PAST]” in SELECT DIAG MODE. Touch “ERASE” in “SELF-
DIAG [PAST]” mode.
NOTE:
If the memory of the malfunction in “SELF-DIAG [PAST]” is
not erased, the User mode will continue to show the system
malfunction by the operation of the warning lamp even if
the malfunction is repaired completely.

“TROUBLE DIAG RECORD”
The memory of “TROUBLE DIAG RECORD” cannot be erased.
Self-Diagnosis Function (Without CONSULT-II)EHS000WF

The reading of these results is accomplished using one of two modes — “User mode” and “Diagnosis
mode”.

After a malfunction is repaired, turn the ignition switch OFF for at least one second, then back ON. Diag-
nosis mode returns to the User mode. At that time, the self-diagnostic result is cleared.
HOW TO CHANGE SELF-DIAGNOSIS MODE
SRS7 01
SRS7 02
SHIA0183E

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
TF-43
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Revision: August 20072004 QX56
3. Display changes to “NOW ADJUSTING” in a short time.
4. When clutch force release limit value is set to “1.2 kgm”, current
value “0.3 kgm” shown on display will be replaced by “1.2 kgm”
and “ADJUSTMENT COMPLETE” will appear at the same time.
Clutch force release limit value setting is now complete.
SMT969D
SMT970D

FRONT WIPER AND WASHER SYSTEM
WW-27
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Revision: August 20072004 QX56
FRONT WIPER INTERMITTENT OPERATION SWITCH POSITION CANNOT BE ADJUSTED
Inspection Procedure
1. COMBINATION SWITCH TO BCM INSPECTION
Select "BCM" on CONSULT-II. With “WIPER” data monitor, check
that “INT VOLUME” changes in order from 1 to 7 according to opera-
tion of the intermittent switch dial position.
OK or NG
OK >> Replace BCM. Refer to BCS-19, "Removal and Installa-
tion of BCM" .
NG >> Replace wiper switch. Refer to WW-31, "
Removal and
Installation of Wiper and Washer Switch" .
WIPERS DO NOT WIPE WHEN FRONT WASHER OPERATES
Inspection Procedure
1. COMBINATION SWITCH TO BCM INSPECTION
Select "BCM" on CONSULT-II. With “WIPER” data monitor, check
that “FR WASHER SW” turns ON-OFF according to operation of
front washer switch.
OK or NG
OK >> Replace BCM. Refer to BCS-19, "Removal and Installa-
tion of BCM" .
NG >> Replace wiper switch. Refer to WW-31, "
Removal and
Installation of Wiper and Washer Switch" .
FRONT WIPERS OPERATE FOR 10 SECONDS, STOP FOR 20 SECONDS, AND AFTER
REPEATING THIS OPERATION FIVE TIMES, THEY BECOME INOPERATIVE
CAUTION:

When auto stop signal has not varied for 10 seconds or longer while IPDM E/R is operating front
wipers, IPDM E/R considers front wipers locked and stops wiper output, which causes this symp-
tom.

This status can be checked by using IPDM E/R "DATA MONITOR". Under this condition, "WIP
PROT" reads "BLOCK".
Inspection Procedure
1. CHECK IPDM E/R TO FRONT WIPER MOTOR
With CONSULT-II
Select "IPDM E/R" with CONSULT-II. With “WIPER” data monitor,
confirm that "WIP AUTO STOP" changes from "ACT P" to "STOP P"
according to wiper operation.
Without CONSULT-II
GO TO 2.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-29, "Removal and
Installation of IPDM E/R" .
NG >> GO TO 2.
WKIA1018E
WKIA1018E
SKIA5301E