steering wheel INFINITI QX56 2009 Factory Service Manual

HEATED STEERING WHEELST-7
< FUNCTION DIAGNOSIS >
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FUNCTION DIAGNOSIS
HEATED STEERING WHEEL
System DiagramINFOID:0000000003775119
System DescriptionINFOID:0000000003775120
The heated steering wheel switch controls the heated steeri ng relay. When the switch is turned on, the relay is
energized and the heated steering system will operate. T he heated steering system will turn off when the
steering wheel temperature reaches approximately 30 ° C (86 ° F). Heated steering system operation can also
be canceled by pressing the heated steering wheel switch again.
NOTE:
If the surface temperature of the steering wheel is below 68 ° F (20 ° C), the system will heat the steering wheel
and cycle off and on to maintain a temperature above 68 ° F (20 ° C). The indicator light will remain on as long
as the system is on. Push the switch again to turn the heated steering wheel system off manually. The indica-
tor light will go off.
Component Parts LocationINFOID:0000000003775121
AWGIA0022GB
1. Heated steering relay M71 2. Combination switch (spiral cable) M52 3. Heated steering wheel M114
4. Heated steering wheel switch M260
ALGIA0030ZZ
Revision: December 20092009 QX56

ST-8
< FUNCTION DIAGNOSIS >
HEATED STEERING WHEEL
Component Description
INFOID:0000000003775122
Heated steering wheel switch  Controls the heated steering relay and operates the heated steering system.
 Turns the indicator lamp ON when the system is activated.
Heated steering relay  Operates the heated steering system with the control signal from the heated steering
wheel switch.
Heated steering wheel  Heats the heating element with the power supplied from the heated steering relay.
Revision: December 20092009 QX56

HEATED STEERING WHEELST-9
< COMPONENT DIAGNOSIS >
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COMPONENT DIAGNOSIS
HEATED STEERING WHEEL
Wiring DiagramINFOID:0000000003775123
ABGWA0003GB
Revision: December 20092009 QX56

ST-10
< COMPONENT DIAGNOSIS >
HEATED STEERING WHEEL
ABGIA0004GB
Revision: December 20092009 QX56

HEATED STEERING WHEELST-11
< COMPONENT DIAGNOSIS >
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ABGIA0005GB
Revision: December 20092009 QX56

ST-12
< SYMPTOM DIAGNOSIS >
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000003775124
Use chart below to help you find the cause of the symp tom. If necessary, repair or replace these parts.
×: ApplicableReference page
ST-13, "Checking Fluid Level"
ST-13, "Air Bleeding Hydraulic System"
ST-37ST-37ST-37ST-13ST-36ST-38
EM-13, "Checking Drive Belts"
ST-36ST-36ST-38ST-36ST-20ST-38
DLN-184, "NVH Troubleshooting Chart"DLN-208, "NVH Troubleshooting Chart"FAX-5, "NVH Troubleshooting Chart"FSU-5, "NVH Troubleshooting Chart"WT-36, "NVH Troubleshooting Chart"WT-36, "NVH Troubleshooting Chart"FAX-5, "NVH Troubleshooting Chart"BR-6, "NVH Troubleshooting Chart"
Possible cause and suspect-
ed parts
Fluid level
Air in hydraulic system
Outer socket ball joint swinging force
Outer socket ball joint rotating torque
Outer socket ball joint end play
Steering fluid leakage
Steering wheel play
Steering gear rack sliding force
Drive belt looseness
Improper steering wheel
Improper installation or looseness of tilt lock lever
Mounting rubber deterioration
Steering column deformation or damage
Improper installation or looseness of steering column
Steering linkage looseness
PROPELLER SHAFT
FRONT FINAL DRIVE
WHEEL HUB
SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
Symptom
Noise
× × ××××× × × ××××××× ×
Shake ××× × ××××× ×
Vibration ××××× × ××× ×
Shimmy ××× × ×××× ×
Shudder × × ×××× ×
Revision: December 20092009 QX56

POWER STEERING FLUIDST-13
< ON-VEHICLE MAINTENANCE >
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ON-VEHICLE MAINTENANCE
POWER STEERING FLUID
Checking Fluid LevelINFOID:0000000004187604
Check power steering fluid level with engine off, referring to the scale
on reservoir tank.
Use HOT range for fluid temperatures of 50 ° – 80 °C (122 ° – 176 °F).
Use COLD range for fluid temperatures of 0 ° – 30 °C (32 ° – 86 °F).
CAUTION:
 Do not overfill.
 Do not reuse any used power steering fluid.
 Recommended fluid is Genuine NISSAN PSF or equivalent. Refer to MA-12, "Fluids and Lubricants"
.
Checking Fluid LeakageINFOID:0000000004187605
Check the hydraulic piping lines for improper attachment and for
leaks, cracks, damage, loose connections, chafing or deterioration.
1. Run engine until fluid temperature reaches 50 ° – 80 °C (122 ° –
176 °F) in reservoir tank. Keep engine speed idle.
2. Turn steering wheel right-to-left several times.
3. Hold steering wheel at each “lock” position for five seconds to check fluid leakage.
CAUTION:
Do not hold steering wheel in a locked position for more
than 10 seconds. (There is the possibility that oil pump may
be damaged.)
4. If fluid leakage at connections is noticed, then loos en flare nut and then retighten. Do not over tighten con-
nector as this can damage O-ring, washer and connector.
5. If fluid leakage from oil pump is noticed, check oil pump. Refer to ST-17
.
6. Check steering gear boots for accumulation of fluid indicating a leak from the steering gear.
Air Bleeding Hydraulic SystemINFOID:0000000005873142
NOTE:
 When vehicle is stationary or while steering wheel is being turned slowly, some noise may be heard from oil pump or gear. This noise is normal and does not affect any system.
 Incomplete air bleeding causes the fo llowing. When this happens, bleed air again.
- Air bubbles in reservoir tank.
- Clicking noise in oil pump.
- Excessive buzzing in oil pump.
1. Stop engine, and then turn steering wheel fully to right and left several times. CAUTION:
Do not allow steering fluid reservoir tank to go below the MIN level line. Check tank frequently and
add fluid as needed.
2. Run engine at idle speed. Turn steering wheel fully right and then fully left, hold for about three seconds.
Then check for fluid leakage.
3. Repeat step 2 several times at about three second intervals. CAUTION:
Do not hold steeri ng wheel in the locked position for more than 10 seconds. (There is the possibil-
ity that oil pump may be damaged.)
4. Check for air bubbles or cloudy fluid.
5. If air bubbles or cloudiness still exists, stop engine, perform steps 2 and 3 again until air bubbles or cloud-
iness does not exist.
LGIA0021E
SGIA0506E
Revision: December 20092009 QX56

STEERING WHEELST-15
< ON-VEHICLE REPAIR >
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ON-VEHICLE REPAIR
STEERING WHEEL
On-Vehicle Inspection and ServiceINFOID:0000000004187602
CHECKING CONDITION OF INSTALLATION
 Check installation condition of steering gear assemb ly, front suspension, axle and steering column.
 Check if movement exists when steering wheel is mo ved up and down, to the left and right and to the axial
direction.
 Check if the nuts for steering gear assembly are loose. Refer to ST-23, "Removal and Installation"
.
CHECKING STEERING WHEEL PLAY
1. Turn tires straight ahead, start engine, then turn steer ing wheel to the left and right lightly, and measure
steering wheel movement on the outer circumference when steering wheel is turned up to the point where
tires start moving.
CHECKING NEUTRAL POSITION ON STEERING WHEEL
 Check neutral position on steering wheel after confirming that front wheel alignment is correct. Refer to FSU-
6, "Front Wheel Alignment".
1. Turn tires straight ahead, check if st eering wheel is in the neutral position.
2. If it is not in the neutral position, remo ve steering wheel and reinstall it correctly.
3. If the neutral position cannot be attained by repositi oning the steering wheel two teeth or less on steering
stem, loosen tie-rod lock nuts of steering outer socket s, then adjust tie-rods by the same amount in the
opposite direction.
CHECKING STEERING WHEEL TURNING FORCE
1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine.
3. Bring power steering fluid up to operating temperature of 60 °– 80 °C (140 °– 176 °F).
4. Tires need to be inflated to specified pressure. Refer to WT-45, "Tire"
.
End play of the axial direction for steering wheel : Refer to
ST-
36, "Steering
Wheel"
LGIA0024E
Steering wheel play on the outer circumference : Refer to ST-36, "Steering
Wheel"
Revision: December 20092009 QX56

ST-16
< ON-VEHICLE REPAIR >
STEERING WHEEL
5. Check steering wheel turning force using Tool when steeringwheel has been turned 360 ° from the neutral position.
6. If steering wheel turning force is out of s pecification, inspect steering column. Refer to ST-29, "Disassem-
bly and Assembly" .
7. If steering column meets specification, repair steering gear. Refer to ST-32, "Disassembly and Assembly"
.
CHECKING FRONT WHEEL TURNING ANGLE
When checking front wheel turning angle, refer to FSU-23, "Wheel Alignment (Unladen*1)".
Tool number — (J-44372)
Steering wheel turning force : Refer to
ST-36, "Steering
Wheel"
WGIA0035E
Revision: December 20092009 QX56

ST-18
< REMOVAL AND INSTALLATION >
STEERING WHEEL
REMOVAL AND INSTALLATION
STEERING WHEEL
Removal and InstallationINFOID:0000000004187593
REMOVAL
1. Set the front wheels in the straight-ahead position.
2. Remove the driver air bag module. Refer to SR-5, "Removal and Installation"
.
3. Disconnect steering wheel switches.
4. Remove the steering wheel center nut.
5. Remove the steering wheel using Tool.
CAUTION:
Place a piece of tape across the sp iral cable so it will not be
rotated out of position.
6. Disconnect heated steering wheel connector.
7. Inspect the steering wheel near the puller holes for damage. If damaged, replace the steering wheel.
 Remove steering wheel rear cover and steering wheelswitches, if required.
INSTALLATION
Installation is in the reverse order of removal.
 Refer to BRC-8, "ADJUSTMENT OF STEERING ANGLE SEN-
SOR NEUTRAL POSITION : Special Repair Requirement" for
steering angle sensor adjustment.
 Align spiral cable correctly when installing steering wheel. Make sure that the spiral cable is in the neutral position. The neutral
position is detected by turning left 2.5 revolutions from the right
end position and ending with the knob at the top.
 After the work is completed, perform self-diagnosis to make sure no malfunction is detected. Refer to SRC-13, "SRS Operation
Check".
 Tighten steering wheel center nut to specification. SR-7, "Removal
and Installation".
CAUTION:
 The spiral cable may snap due to steering operation if the
cable is not installed in the correct position.
 With the steering linkage di sconnected, the cable may snap
by turning the steering wheel beyond the limited number of
turns. The spiral cable can be turned counterclockwise about
2.5 turns from the neutral position. Tool number : ST27180001 (J-25726-A)
SGIA1524J
WGIA0038E
PHIA0275E
Revision: December 20092009 QX56