2005 INFINITI QX4 Factory Service Manual

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Page 2897 of 3419

INFINITI QX4 2005 Factory Service Manual RSU-22
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: October 20052005 QX56
6. CHECK SUSPENSION AIR COMPRESSOR POWER AND GROUND
1. Turn the ignition switch ON.
2. Check voltage between suspensi

Page 2898 of 3419

INFINITI QX4 2005 Factory Service Manual TROUBLE DIAGNOSES FOR SYMPTOMS
RSU-23
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Revision: October 20052005 QX56
TROUBLE DIAGNOSES FOR SYMPTOMSPFP:99999
Load Leveling Rear Air Suspension System Does Not OperateEES001

Page 2899 of 3419

INFINITI QX4 2005 Factory Service Manual RSU-24
TROUBLE DIAGNOSES FOR SYMPTOMS
Revision: October 20052005 QX56
4. CHECK GENERATOR SIGNAL INPUT
1. Start the engine.
2. Check voltage between suspension control unit connector B3
terminal 15 (BR

Page 2900 of 3419

INFINITI QX4 2005 Factory Service Manual REAR SUSPENSION ASSEMBLY
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Revision: October 20052005 QX56
REAR SUSPENSION ASSEMBLYPFP:55020
ComponentsEES001HF
Rear Suspension
WEIA0092E

Page 2901 of 3419

INFINITI QX4 2005 Factory Service Manual RSU-26
REAR SUSPENSION ASSEMBLY
Revision: October 20052005 QX56
Rear Load Leveling Air Suspension System
On-Vehicle Inspection and ServiceEES001HG
Check all of the component mountings for any excessiv

Page 2902 of 3419

INFINITI QX4 2005 Factory Service Manual REAR SUSPENSION ASSEMBLY
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Wheel Alignment InspectionEES001HH
Rear Wheel Alignment Adjusting Bolts
PRELIMINARY INSPECTION
WA RN ING:
Alw

REAR SUSPENSION ASSEMBLY
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Wheel Alignment InspectionEES001HH
Rear Wheel Alignment Adjusting Bolts
PRELIMINARY INSPECTION
WA RN ING:
Always adjust the alignment with the vehicle on a flat surface. Use CONSULT-II "EXHAUST SOLE-
NOID" active test to release the air pressure from the rear load leveling air suspension system.
NOTE:
If alignment is out of specification, inspect and replace any damaged or worn rear suspension parts before
making any adjustments.
1. Check and adjust the wheel alignment with the vehicle under unladen conditions. “Unladen conditions”
means that the fuel, coolant, and lubricant are full; and that the spare tire, jack, hand tools and mats are in
their designated positions.
2. Check the tires for incorrect air pressure and excessive wear.
3. Check the wheels for runout and damage. Refer to WT-5, "
Inspection" .
4. Check the wheel bearing axial end play.
5. Check the shock absorbers. Refer to RSU-26, "
SHOCK ABSORBER INSPECTION" .
6. Check each mounting point of the suspension components for any excessive looseness or damage.
7. Check each link, arm, and the rear suspension member for any damage.
8. Check the vehicle height. Refer to RSU-48, "
Wheelarch Height (Unladen*1 )" .
If vehicle height is not within ± 10 mm (0.39 in) of the specification, perform the control unit initialization
procedure. Refer to RSU-46, "
Initialization Procedure" .
GENERAL INFORMATION AND RECOMMENDATIONS
1. A Four-Wheel Thrust Alignment should be performed.
This type of alignment is recommended for any NISSAN vehicle.
The four-wheel “thrust” process helps ensure that the vehicle is properly aligned and the steering wheel
is centered.
The alignment machine itself should be capable of accepting any NISSAN vehicle.
The alignment machine should be checked to ensure that it is level.
2. Make sure the alignment machine is properly calibrated.
Your alignment machine should be regularly calibrated in order to give correct information.
WEIA0102E
1. Rear lower link adjusting bolt, LH 2. Front lower link adjusting bolt, LH 3. Front lower link adjusting bolt, RH
4. Rear lower link adjusting bolt, RH
Axial end play : 0 mm (0 in)

Page 2903 of 3419

INFINITI QX4 2005 Factory Service Manual RSU-28
REAR SUSPENSION ASSEMBLY
Revision: October 20052005 QX56
Check with the manufacturer of your specific alignment machine for their recommended Service/Cali-
bration Schedule.
THE ALIGNMENT PROC

RSU-28
REAR SUSPENSION ASSEMBLY
Revision: October 20052005 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 0° 5' with each graduation of the adjust-
ing 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

Page 2904 of 3419

INFINITI QX4 2005 Factory Service Manual REAR SUSPENSION ASSEMBLY
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Revision: October 20052005 QX56
5. Push the vehicle slowly ahead to rotate the wheels 180° (a half
turn).
If the wheels are rotated more tha

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