sensor 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 excessive looseness, or back lash. Check the components for
any excessive wear, damage, or abnormal conditions. Repair or replace the components as necessary.
SHOCK ABSORBER INSPECTION

Check the shock absorbers for any air leaks or damage, and replace as necessary.

Check the hoses for any air leaks or damage, and replace as necessary.
1. Seat belt latch anchor 2. Stabilizer bar bushing 3. Stabilizer bar clamp
4. Stabilizer bar 5. Connecting rod 6. Front lower link
7. Knuckle 8. Bushing 9. Rear lower link
10. Shock absorber 11. Suspension arm 12. Lower rubber seat
13. Coil spring 14. Upper rubber seat 15. Rear suspension member
16. Spare tire bracket 17. Bound bumper
LEIA0072E
1. Rear load leveling air suspension
hose, RH2. Shock absorber, RH 3. Height sensor
4. Rear load leveling air suspension
hose, LH5. Shock absorber, LH 6. Rear load leveling air suspension
compressor assembly

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

REAR SUSPENSION MEMBER
RSU-31
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RSU
Revision: October 20052005 QX56
Rear Load Leveling Air Suspension System
REMOVAL
1. Use the CONSULT-II “EXHAUST SOLENOID” active test to release the air pressure from the rear load
leveling air suspension system.
2. Disconnect the electrical connectors for the height sensor and the rear load leveling air suspension com-
pressor assembly.
3. Unclip the rubber cover to access the rear load leveling air suspension compressor assembly.
1. Seat belt latch anchor 2. Stabilizer bar bushing 3. Stabilizer bar clamp
4. Stabilizer bar 5. Connecting rod 6. Front lower link
7. Knuckle 8. Bushing 9. Rear lower link
10. Shock absorber 11. Suspension arm 12. Lower rubber seat
13. Coil spring 14. Upper rubber seat 15. Rear suspension member
16. Spare tire bracket 17. Bound bumper
LEIA0072E
1. Rear load leveling air suspension
hose, RH2. Shock absorber, RH 3. Height sensor
4. Rear load leveling air suspension
hose, LH5. Shock absorber, LH 6. Rear load leveling air suspension
compressor assembly (includes the
bracket and rubber cover)

RSU-32
REAR SUSPENSION MEMBER
Revision: October 20052005 QX56
4. Disconnect the rear load leveling air suspension hoses at the
rear load leveling air suspension compressor assembly.

To disconnect the hoses, push in on the lock ring using a suit-
able tool and pull the hose out.
5. Remove both of the rear wheel and tire assemblies using power
tool.
6. Remove the brake caliper without disconnecting the brake
hoses, using power tool. Reposition the brake caliper out of the
way using a suitable wire. Refer to BR-27, "
Removal and Instal-
lation of Brake Caliper and Disc Rotor" .
CAUTION:

Do not crimp or stretch the brake hose when repositioning the brake caliper out of the way.

Do not press brake pedal while the brake caliper is removed.
7. Remove the spare tire.
8. Disconnect the two rear ABS sensor electrical connectors.
9. Remove the two rear drive shafts. Refer to RAX-7, "
Removal and Installation" .
10. Remove the rear final drive. Refer to RFD-10, "
REAR FINAL DRIVE ASSEMBLY" .
11. Remove the EVAP canister bolt from the top of the rear suspension member.
12. Disconnect the parking brake cables from the brackets on the rear suspension member.
13. Set a suitable jack to support each of the rear lower links and the
coil spring tension.
14. Remove both of the rear lower link outer bolts and lower the jack to remove the rear coil springs.
15. Remove the two bolts to disconnect the seat belt latch anchor
from the rear suspension member.
16. Disconnect both of the connecting rods from the rear stabilizer
bar.
17. Set a suitable jack under the rear suspension member.
18. Remove the six rear suspension member bolts.
19. Slowly lower the jack to remove the rear suspension member,
suspension arm, front and rear lower links and stabilizer bar as
an assembly.
20. If necessary, remove the suspension arm, spare tire bracket,
height sensor, rear load leveling air suspension hoses, stabilizer
bar, knuckle, and front and rear lower links from the rear suspension member.
INSPECTION AFTER REMOVAL
Check the rear suspension member for deformation, cracks, and other damage and replace if necessary.
LEIA0074E
LEIA0077E
LEIA0075E

REAR LOWER LINK & COIL SPRING
RSU-39
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Revision: October 20052005 QX56
REAR LOWER LINK & COIL SPRINGPFP:551B0
Removal and Installation EES001HM
REMOVAL
1. Remove the wheel and tire assembly using power tool. Refer to WT-7, "Rotation" .
2. Use CONSULT-II "EXHAUST SOLENOID" active test to release the air pressure from the rear load level-
ing air suspension system.
3. For removing the LH rear lower link and coil spring, remove the
height sensor arm bracket bolt from the LH rear lower link.
4. Set a suitable jack to relieve the coil spring tension from the rear
lower link.
WAR NIN G:
Do not compress the coil spring when setting the jack.
5. Loosen the rear lower link adjusting bolt and nut connected to
the rear suspension member, using power tool.
6. Remove the rear lower link bolt and nut from the knuckle using
power tool.
7. Slowly lower the suitable jack to release the coil spring tension. Then remove the upper rubber seat, coil
spring, and lower rubber seat from the rear lower link.
LEIA0080E
LEIA0077E
LEIA0009E
LEIA0077E

RSU-42
REAR LOAD LEVELING AIR SUSPENSION COMPRESSOR ASSEMBLY
Revision: October 20052005 QX56
REAR LOAD LEVELING AIR SUSPENSION COMPRESSOR ASSEMBLYPFP:53400
Removal and InstallationEES001HP
Rear Load Leveling Air Suspension System
REMOVAL
1. Use CONSULT-II "EXHAUST SOLENOID" active test to release the air pressure from the rear load level-
ing air suspension system.
2. Disconnect the electrical connectors for the rear load leveling air suspension compressor assembly.
3. Unclip the rubber cover to access the rear load leveling air suspension compressor assembly.
4. Disconnect the rear load leveling air suspension hoses at the
rear load leveling air suspension compressor assembly.

To disconnect the hoses, push in on the lock ring using a suit-
able tool and pull the hose out.
LEIA0072E
1. Rear load leveling air suspension
hose, RH2. Shock absorber, RH 3. Height sensor
4. Rear load leveling air suspension
hose, LH5. Shock absorber, LH 6. Rear load leveling air suspension
compressor assembly
LEIA0074E

RSU-44
HEIGHT SENSOR
Revision: October 20052005 QX56
HEIGHT SENSORPFP:53820
Removal and InstallationEES001HQ
Rear Load Leveling Air Suspension System
REMOVAL
1. Use CONSULT-II “EXHAUST SOLENOID” active test to release the air pressure from the rear load level-
ing air suspension system.
2. Disconnect the electrical connector for the height sensor.
3. Remove the two height sensor bolts and height sensor arm
bracket bolt.
4. Remove the height sensor.
LEIA0072E
1. Rear load leveling air suspension
hose, RH2. Shock absorber, RH 3. Height sensor
4. Rear load leveling air suspension
hose, LH5. Shock absorber, LH 6. Rear load leveling air suspension
compressor assembly
LEIA0080E

HEIGHT SENSOR
RSU-45
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RSU
Revision: October 20052005 QX56
INSTALLATION
Installation is in the reverse order of removal.
1. Start the engine.
2. Use CONSULT-II to perform "STANDARD HEIGHT LEVEL" work support function.
3. Using data monitor of CONSULT-II, verify "HEIGT CALC" is at 0 mm.
4. Check the vehicle height. Refer to RSU-48, "
Wheelarch Height (Unladen*1 )" . If vehicle height is not
within ± 10 mm (0 ± 0.39 in) of the specification, perform the initialization procedure. Refer to RSU-46,
"Initialization Procedure" .

SB-4
SEAT BELTS
Revision: October 20052005 QX56
FRONT SEAT BELT RETRACTOR
Removal
CAUTION:

Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait at least
3 minutes.
1. Remove the center pillar upper/lower finishers. Refer to EI-35, "
BODY SIDE TRIM" .
2. Remove the seat belt retractor anchor bolts and seat belt retractor and belt assembly.

On RH side, disconnect the seat belt tension sensor.
3. Disconnect the seat belt pre-tensioner electrical connector.
CAUTION:

For installing/removing front seat belt pre-tensioner con-
nector, insert a thin screwdriver wrapped in tape into the
notch, lift the lock and remove the connector.

Install the connector with the lock raised, and push the lock
into the connector.
Installation
Installation is in the reverse order of removal.

Install the seat belt retractor and belt assembly upper bolt first.

Ensure that seat belt height adjuster is locked in the lowest position during installation.
LHIA0047E
PHIA0341E

SE-1
SEAT
I BODY
CONTENTS
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SECTION SE
A
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SE
Revision: October 20052005 QX56 PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for Work ................................................ 3
PREPARATION ........................................................... 4
Special Service Tool ................................................. 4
Commercial Service Tool ......................................... 4
SQUEAK AND RATTLE TROUBLE DIAGNOSES ..... 5
Work Flow ................................................................ 5
CUSTOMER INTERVIEW ..................................... 5
DUPLICATE THE NOISE AND TEST DRIVE ....... 6
CHECK RELATED SERVICE BULLETINS ........... 6
LOCATE THE NOISE AND IDENTIFY THE
ROOT CAUSE ...................................................... 6
REPAIR THE CAUSE ........................................... 6
CONFIRM THE REPAIR ....................................... 7
Generic Squeak and Rattle Troubleshooting ........... 7
INSTRUMENT PANEL .......................................... 7
CENTER CONSOLE ............................................. 7
DOORS ................................................................. 7
TRUNK .................................................................. 8
SUNROOF/HEADLINING ..................................... 8
OVERHEAD CONSOLE (FRONT AND REAR) ..... 8
SEATS ................................................................... 8
UNDERHOOD ....................................................... 8
Diagnostic Worksheet .............................................. 9
AUTOMATIC DRIVE POSITIONER ...........................11
Component Parts And Harness Connector Location
....11
Manual Operation ................................................... 12
Automatic Operation .............................................. 12
System Description ................................................ 12
FAIL- SAFE MODE ............................................. 14
CANCEL OF FAIL-SAFE MODE ......................... 14
MEMORY STORING AND KEYFOB INTER-
LOCK STORING ................................................. 15
MEMORY OPERATION ...................................... 16
ENTRY OPERATION .......................................... 16
EXITING OPERATION ........................................ 16KEYFOB INTERLOCK OPERATION .................. 17
CAN Communication System Description .............. 17
Schematic ............................................................... 18
Wiring Diagram — AUT/DP — ............................... 20
Terminals and Reference Values for BCM .............. 30
Terminals and Reference Values for Driver Seat
Control Unit ............................................................. 30
Terminals and Reference Values for Automatic
Drive Positioner Control Unit .................................. 32
Work Flow ............................................................... 34
Preliminary Check .................................................. 35
SETTING CHANGE FUNCTION ......................... 35
POWER SUPPLY AND GROUND CIRCUIT
INSPECTION ...................................................... 35
CONSULT-II Function (AUTO DRIVE POS.) .......... 38
CONSULT-II INSPECTION PROCEDURE .......... 38
SELF-DIAGNOSIS RESULTS ............................. 40
DATA MONITOR ................................................. 41
ACTIVE TEST ..................................................... 41
CAN Communication Inspection Using CONSULT-
II (Self-Diagnosis) ................................................... 42
Symptom Chart ....................................................... 42
Sliding Motor Circuit Inspection .............................. 44
Reclining Motor LH Circuit Inspection .................... 45
Lifting Motor (Front) Circuit Inspection ................... 46
Lifting Motor (Rear) Circuit Inspection .................... 48
Pedal Adjusting Motor Circuit Inspection ................ 49
Mirror Motor LH Circuit Check ................................ 50
Mirror Motor RH Circuit Check ............................... 52
Steering Wheel Tilt Circuit Inspection ..................... 53
Sliding Sensor Circuit Inspection ............................ 55
Reclining Sensor Circuit Inspection ........................ 56
Lifting Sensor (Front) Circuit Inspection ................. 57
Lifting Sensor (Rear) Circuit Inspection .................. 58
Pedal Adjusting Sensor Circuit Inspection .............. 59
Mirror Sensor LH Circuit Check .............................. 60
Mirror Sensor RH Circuit Check ............................. 62
Steering Wheel Tilt Sensor Circuit Inspection ........ 64
Sliding Switch Circuit Inspection ............................. 66
Reclining Switch Inspection .................................... 67