2006 INFINITI M35 suspension

REAR SUSPENSION ASSEMBLY
RSU-9
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RSU
Revision: 2006 January2006 M35/M45
–Parking brake operation (stroke): Refer to PB-2, "PEDAL STROKE" .
–Wheel sensor harness for proper connection: Refer to BRC-57, "WHEEL SENSOR" .

RSU-12
SUSPENSION ARM
Revision: 2006 January2006 M35/M45
SUSPENSION ARMPFP:55501
Removal and InstallationNES000JC
REMOVAL
1. Remove tire with a power tool.
2. Set a jack under rear lower link to relieve the coil spring tension.
3. Remove connecting rod mounting bracket from suspension arm with a power tool.
4. Remove mounting nuts and bolts between suspension arm and rear suspension member.
5. Remove cotter pin of suspension arm ball joint, and loosen nut.
6. Use a ball joint remover (suitable tool) to remove suspension arm from axle. Be careful not to damage ball
joint boot.
CAUTION:
Tighten temporarily mounting nut to prevent damage to threads and to prevent ball joint remover
(suitable tool) from coming off.
7. Remove suspension arm and stopper rubber from vehicle.
INSPECTION AFTER REMOVAL
Visual Inspection
Check suspension arm and bushing for deformation, cracks or damage. If any non-standard condition is
found, replace it.
Check boot of ball joint for cracks or damage, and also for grease leakage. If a malfunction is detected,
replace suspension arm.
Ball Joint Inspection
Manually move ball stud at least ten times by hand to check for smooth movement.
Swing Torque Inspection
Hook spring balance at cotter pin mounting hole. Confirm spring
balance measurement value is within specifications when ball
stud begins moving.
If it is outside the specified range, replace suspension arm
assembly.
Rotating Torque Inspection
Install the mounting nut to ball stud. Make sure that rotating
torque is within the specifications with a preload gauge (SST)
If it is outside the specified range, replace suspension arm
assembly.
Axial End Play Inspection
Move tip of ball stud in axial direction to check for looseness. Standard value
Swing torque:
0.5 - 3.4 Nꞏm (0.06 - 0.34 kg-m, 5 - 30 in-lb)
Measured value of spring balance:
8.1 - 54.8 N (0.83 - 5.5 kg, 1.82 - 12.32 lb)
SEIA0523E
Standard value
Rotating torque:
0.5 - 3.4 Nꞏm (0.06 - 0.34 kg-m, 5 - 30 in-lb)
SDIA1150E
Standard value
Axial end play : 0 mm (0 in)

SUSPENSION ARM
RSU-13
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RSU
Revision: 2006 January2006 M35/M45
If it is outside the specified range, replace suspension arm assembly.
INSTALLATION
Installation is the reverse order of removal. For tightening torque. Refer to RSU-7, "Components" .
CAUTION:
Do not reuse non-reusable parts.
Perform the final tightening of rear suspension member installation position (rubber bushing) under
unladen condition with tires on level ground. Refer to RSU-5, "
Wheel Alignment Inspection" .
Adjust neutral position of steering angle sensor after checking the wheel alignment. Refer to BRC-6,
"Adjustment of Steering Angle Sensor Neutral Position" .

RSU-14
RADIUS ROD
Revision: 2006 January2006 M35/M45
RADIUS RODPFP:55110
Removal and InstallationNES000JD
REMOVAL
1. Remove tire with a power tool.
2. Remove brake caliper with a power tool. Hang it in a place where it will not interfere with work. Refer to
BR-29, "
REAR DISC BRAKE" .
CAUTION:
Do not depressing brake pedal while brake caliper is removed.
3. Put matching marks on both disc rotor and the wheel hub and
bearing assembly. then remove disc rotor.
4. Remove rear lower link and coil spring. Refer to RSU-16, "
REAR
LOWER LINK & COIL SPRING" .
5. Remove mounting bolt in lower side of shock absorber with a
power tool.
6. Remove mounting bolt and nut in axle side of front lower link
with a power tool.
7. Remove mounting bolt and nut in axle side of radius rod with a
power tool.
8. Remove mounting bolt in rear suspension member side of
radius rod with a power tool, then remove radius rod from vehicle.
INSPECTION AFTER REMOVAL
Check radius rod and bushing for any deformation, cracks, or damage. Replace if there are.
INSTALLATION
Installation is the reverse order of removal. For tightening torque. Refer to RSU-7, "Components" .
CAUTION:
Do not reuse non-reusable parts.
Assemble disc rotor and wheel hub and bering assembly by
aligning each matching mark as shown in the figure when install-
ing disc rotor.
Perform final tightening of rear suspension member and axle
installation position (rubber bushing) under unladen condition
with tires on level ground. Check wheel alignment. Refer to
RSU-5, "
Wheel Alignment Inspection" .
Adjust neutral position of steering angle sensor after checking
the wheel alignment. Refer to BRC-6, "
Adjustment of Steering
Angle Sensor Neutral Position" .
SDIA2638E
SDIA2638E

FRONT LOWER LINK
RSU-15
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RSU
Revision: 2006 January2006 M35/M45
FRONT LOWER LINKPFP:55110
Removal and InstallationNES000JE
REMOVAL
1. Remove tire with a power tool.
2. Set a jack under rear lower link to relieve the coil spring tension.
3. Remove mounting nut and bolt between front lower link and rear suspension member with a power tool.
4. Remove mounting nut and bolt between front lower link and axle with a power tool.
5. Remove front lower link from vehicle.
INSPECTION AFTER REMOVAL
Check front lower link and bushing for any deformation, cracks, or damage. Replace if there are.
INSTALLATION
Installation is the reverse order of removal. For tightening torque. Refer to RSU-7, "Components" .
CAUTION:
Do not reuse non-reusable parts.
Perform the final tightening of rear suspension member and axle installation position (rubber bushing)
under unladen condition with tires on level ground. Check wheel alignment. Refer to RSU-5, "
Wheel Align-
ment Inspection" .
Adjust neutral position of steering angle sensor after checking the wheel alignment. Refer to Refer to
BRC-6, "
Adjustment of Steering Angle Sensor Neutral Position" .

RSU-16
REAR LOWER LINK & COIL SPRING
Revision: 2006 January2006 M35/M45
REAR LOWER LINK & COIL SPRINGPFP:551B0
Removal and InstallationNES000JF
REMOVAL
1. Remove tire with a power tool.
2. Set a jack under rear lower link to relieve the coil spring tension.
3. Loosen mounting bolt and nut of rear lower link inside of suspension member, and then remove mounting
bolt and nut inside of axle with a power tool.
4. Slowly lower jack, then remove upper seat, coil spring and rubber sheet from rear lower link.
5. Remove mounting bolt and nut inside of suspension member to remove rear lower link with a power tool.
INSPECTION AFTER REMOVAL
Check rear lower link, bushing and coil spring for deformation, cracks, and damage. Replace rear lower link
and coil spring if there are.
INSTALLATION
Installation is the reverse order of removal. For tightening torque. Refer to RSU-7, "Components" .
CAUTION:
Do not reuse non-reusable parts.
Make sure that upper seat is attached as shown in the figure.
CAUTION:
Make sure that the projecting parts (3) on upper seat inside
is securely fitted on the bracket tabs(3).
Match up rubber seat indentions and rear lower link grooves and
attach.
CAUTION:
Make sure spring is not up side down. The top and bottom
are indicated by paint color.
Perform the final tightening of rear suspension member and axle
installation position (rubber bushing) under unladen condition
with tires on level ground. Check wheel alignment. Refer to
RSU-5, "
Wheel Alignment Inspection" .
Adjust neutral position of steering angle sensor after checking
the wheel alignment. Refer to BRC-6, "
Adjustment of Steering
Angle Sensor Neutral Position" .
SEIA0333E

TROUBLE DIAGNOSIS
STC-9
[EPS]
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STC
Revision: 2006 January2006 M35/M45
For Fast and Accurate Trouble DiagnosisNGS000E1
Check the following items with the vehicle stopped
Is air pressure and size of tires proper?
Is the specified part used for the steering wheel?
Is control unit a genuine part?
Are there any fluid leakage from steering gear assembly, power steering oil pump, and hydraulic pipes,
etc? Refer to PS-8, "
POWER STEERING FLUID" .
Is the fluid level proper? Refer to PS-8, "POWER STEERING FLUID" .
Is the wheel alignment adjusted properly? Refer to FSU-19, "SERVICE DATA AND SPECIFICATIONS
(SDS)" (2WD), FSU-36, "SERVICE DATA AND SPECIFICATIONS (SDS)" (AWD).
Are there any damage or modification to suspension or body resulting in increased weight or altered
ground clearance?
Check each link installation condition of suspension and axle.
Check each connector connection condition.
Check the following items while driving the vehicle
Check conditions when the malfunction occurred (5W 1H).
Is the engine condition normal?
Basic InspectionNGS000E2
POWER SUPPLY CIRCUIT TERMINAL LOOSENESS AND BATTERY
Check battery terminals for looseness on both positive and negative ones and ground connection. Also make
sure that battery voltage does not drop.
Inspection: Power Steering Control Unit Power Supply Circuit and GroundNGS000E3
1. CHECK POWER STEERING CONTROL UNIT CONNECTOR
Turn ignition switch OFF, disconnect power steering control unit harness connector, and check terminal for
deformation, disconnection, looseness, etc.
OK or NG
OK >> GO TO 2.
NG >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal.
2. CHECK POWER STEERING CONTROL UNIT GROUND CIRCUIT
Disconnect power steering control unit harness connector M8, and
then check continuity between power steering control unit harness
connector M8 and ground.
OK or NG
OK >> GO TO 3.
NG >> Ground circuit open or shorted. Repair or replace any
inoperative parts. Terminal 2 – Ground : Continuity exist.
SGIA1231E

REAR ACTIVE STEER
STC-13
[RAS]
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STC
Revision: 2006 January2006 M35/M45
[RAS]REAR ACTIVE STEERPFP:55705
Removal and InstallationNGS000E5
COMPONENTS
REMOVAL
1. Remove coil spring. Refer to RSU-16, "REAR LOWER LINK & COIL SPRING" .
2. Disconnect harness connector from RAS actuator assembly and rear suspension member.
3. Remove fixing bolts and nuts of RAS actuator assembly (1), and
then remove RAS actuator assembly (1) from rear suspension
member.
INSTALLATION
Installation is the reverse order of removal. For tightening torque, refer to STC-13, "COMPONENTS" .
When installing RAS actuator assembly to rear suspension member, check the mounting surfaces of RAS
actuator assembly and rear suspension member for oil, dirt, sand, or other foreign materials.
To perform the neutral position adjustment. Refer to STC-14, "Neutral Position Adjustment" .
1. Rear lower link 2. Decenter cam 3. RAS actuator assembly
Refer to GI-11, "
Components" , for the symbols in the figure.
SGIA1238E
SGIA1239E