brake INFINITI QX56 2006 Factory Service Manual

PB-6
PARKING BRAKE SHOE
Revision: November 20092006 QX56
PARKING BRAKE SHOEPFP:44060
Removal and InstallationEFS0068M
COMPONENTS
REMOVAL
WARNING:
Clean the brakes with a vacuum dust collector to minimize the hazard of airborne particles or other
materials.
NOTE:
Remove the disc rotor only with the parking brake pedal completely disengaged.
1. Remove wheel hub and bearing assembly. Refer to FAX-5, "
Removal and Installation" .

Disconnect the wheel sensor at the harness connector. It is not necessary to remove the wheel sensor
from the wheel hub and bearing assembly.
2. Remove the return springs.
3. Remove the adjuster.
4. Remove the retainers, anti-rattle pins and shoes.
5. Disconnect the rear cable from the toggle lever.
6. Remove the back plate.
1. Back plate 2. Shoes 3. Toggle lever
4. Return springs 5. Retainers 6. Adjuster
7. Anti-rattle pins
WFIA0164E

PARKING BRAKE SHOEPB-7
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Revision: November 2009 2006 QX56
INSPECTION AFTER REMOVAL
Lining Thickness Inspection

Check thickness of lining.
Drum Inner Diameter Inspection

Check drum inner diameter.
Other Inspections

Check shoe sliding surface for excessive wear and damage.

Check anti-rattle pins for excessive wear and corrosion.

Check return springs for sagging.

Check adjuster for rough operation.

When disassembling adjuster, apply PBC (Poly Butyl Cuprysil) grease or equivalent to the adjuster
threads. Refer to MA-11, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Check either visually or with a vernier caliper to see if there is any excessive wear, cracks, or damage
inside drum.
INSTALLATION
Installation is in the reverse order of removal.

Apply brake grease to the specified points during assembly. Refer to PB-4, "Components" .

Install adjuster so that threaded part expands when rotating it in
the direction shown by the arrow.

Shorten adjuster by rotating it in the oposite direction as shown
by the arrow.
NOTE:
After replacing brake shoes or disc rotors, or if parking brake does
not function well, perform break-in operation as follows.
1. Adjust parking brake pedal stroke. Refer to PB-3, "
ADJUST-
MENT" .
2. Perform parking brake burnishing operation by driving the vehicle forward under the following conditions: Standard thickness "A" : 5.15
± 0.25 mm
(0.203 ± 0.010 in)
Wear limit thickness "A" : 0.5 mm (0.020 in)
SBR021A
Standard inner diameter : 205 ± 0.13 mm
(8.07 ± 0.01 in)
Wear limit of inner diameter : 205.7 mm (8.10 in)
SBR768A
SFIA0153E

Vehicle speed 40 km/h (25 mph) set (forward)

Parking brake operating force 196 N (20.0 kg-f, 44.1 lb-f) set

Apply time 30 sec.

PB-8
PARKING BRAKE SHOE
Revision: November 20092006 QX56
CAUTION:

To prevent lining from getting too hot, allow a cool off period of approximately 5 minutes after
every break-in operation.

Do not perform excessive break-in operations, because it may cause uneven or early wear of
lining.
3. After burnishing operation, check parking brake pedal stroke. Readjust if it is now longer than the speci- fied stroke. Refer to PB-3, "
ADJUSTMENT" .

SERVICE DATA AND SPECIFICATIONS (SDS)PB-9
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Revision: November 2009 2006 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Parking Drum Brake EFS0068N
Unit: mm (in)
Parking Brake ControlEFS0068O
Ty p e Drum
Brake lining Standard thickness (new)
5.15 ± 0.25 (0.203 ± 0.010)
Wear limit thickness 0.5 (0.020)
Drum inner diameter (disc) Standard inner diameter (new)
205 ± 0.13 (8.07 ± 0.01)
Wear limit of inner diameter 205.7 (8.10)
Control type Foot pedal
Number of notches [under force of 196 N (20.0 kg-f, 44.1 lb-f)] 3 – 4 notches
Number of notches when parking brake warning lamp switch comes on 1 notch

PG-62
HARNESS
Revision: November 20092006 QX56
Wiring Diagram Codes (Cell Codes)EKS00BNE
Use the chart below to find out what each wiring diagram code stands for.
Refer to the wiring diagram code in the alphabetical index to find the location (page number) of each wiring
diagram.
CodeSection Wiring Diagram Name
A/C,A ATC Auto Air Conditioner
A/SUSP RSU Rear Air Suspension
AF1B1 EC Air Fuel Ratio (A/F) Sensor 1 (Bank 1)
AF1B2 EC Air Fuel Ratio (A/F) Sensor 1 (Bank 2)
AF1HB1 EC Air Fuel Ratio (A/F) Sensor 1 (Bank 1)
AF1HB2 EC Air Fuel Ratio (A/F) Sensor 1 (Bank 2)
APPS1 EC Accelerator Pedal Position Sensor
APPS2 EC Accelerator Pedal Position Sensor
APPS3 EC Accelerator Pedal Position Sensor
ASC/BS EC ASCD Brake Switch
ASC/SW EC ASCD Steering Switch
ASCBOF EC ASCD Brake Switch
ASCIND EC ASCD Indicator
A/T AT A/T Assembly
AT/IND DI A/T Indicator Lamp
AUDIO AV Audio
AUT/DP SE Automatic Drive Positioner
AUTO/L LT Auto Light Control
B/CLOS BL Back Door Auto Closure System
BACK/L LT Back-up Lamp
BRK/SW EC Brake Switch
CAN EC CAN Communication Line
CAN LAN CAN System
CHARGE SC Charging System
CHIME DI Warning Chime
CLOCK DI Clock
COOL/F EC Cooling Fan Control
COMBSW LT Combination Switch
COMM AV Audio Visual Communication System
COMPAS DI Compass and Thermometer
D/LOCK BL Power Door Lock
DEF GW Rear Window Defogger
DTRL LT Headlamp - With Daytime Light System
DVD AV DVD Entertainment System
ECM/PW EC ECM Power Supply for Back-Up
ECTS EC Engine Coolant Temperature Sensor
ETC1 EC Electric Throttle Control Function
ETC2 EC Throttle Control Motor Relay
ETC3 EC Throttle Control Motor
F/FOG LT Front Fog Lamp
F/PUMP EC Fuel Pump
FTTS EC Fuel Tank Temperature Sensor
FUELB1 EC Fuel Injection System Bank 1
FUELB2 EC Fuel Injection System Bank 2
H/AIM LT Headlamp Aiming Control
H/PHON AV Hands Free Telephone
H/LAMP LT Headlamp

HARNESSPG-63
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Revision: November 2009 2006 QX56
HORNWW Horn
HSEAT SE Heated Seat
ICC ACS Intelligent Cruise Control
ICCBOF EC ICC Brake Switch
ICC/BS EC ICC Steering Switch
ICC/SW EC ICC Brake Switch
I/MIRR GW Inside Mirror (Auto Anti-Dazzling Mirror)
IATS EC Intake Air Temperature Sensor
IGNSYS EC Ignition System
ILL LT Illumination
INJECT EC Injector
INT/L LT Room/Map, Vanity, Cargo, Personal, Foot, Step, and Puddle Lamps
KEYLES BL Remote Keyless Entry System
KS EC Knock Sensor
MAFS EC Mass Air Flow Sensor
MAIN EC Main Power Supply and Ground Circuit
METER DI Speedometer, Tachometer, Temp. and Fuel Gauges
MIL/DL EC Malfunction Indicator Lamp
MIRROR GW Door Mirror
NATS BL Nissan Anti-Theft System
NAVI AV Navigation System
O2H2B1 EC Rear Heated Oxygen Sensor 2 Heater Bank 1
O2H2B2 EC Rear Heated Oxygen Sensor 2 Heater Bank 2
O2S2B1 EC Heated Oxygen Sensor 2 Bank 1
O2S2B2 EC Heated Oxygen Sensor 2 Bank 2
P/SCKT WW Power Socket
PGC/V EC EVAP Canister Purge Volume Control Solenoid Valve
PHASE EC Camshaft Position Sensor (PHASE) (Bank 1)
PNP/SW EC Park/Neutral Position Switch
POS EC Crankshaft Position Sensor (POS)
POWER PG Power Supply Routing
PRE/SE EC EVAP Control System Pressure Sensor
PS/SEN EC Power Steering Pressure Sensor
R/VIEW DI Rear View Monitor
RP/SEN EC Refrigerant Pressure Sensor
SEN/PW EC Sensor Power Supply
SHIFT AT A/T Shift Lock System
SONAR DI Rear Sonar System
SROOF RF Sunroof
SRS SRS Supplemental Restraint System
START SC Starting System
STOP/L LT Stop Lamp
T/TOW LT Trailer Tow
T/WARN WT Low Tire Pressure Warning System
TAIL/L LT Parking, License and Tail Lamps
T/F TFTransfer Case
TPS1 EC Throttle Position Sensor
TPS2 EC Throttle Position Sensor
TPS3 EC Throttle Position Sensor
TRNSCV BL HOMELINK® Universal Transceiver
TURN LT Turn Signal and Hazard Warning Lamps
VDC BRC Vehicle Dynamic Control System

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPR-3
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Revision: November 2009 2006 QX56
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEDS001W4
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
PR-4
(front)
PR-8 (rear)
PR-4 (front)
PR-8 (rear)
PR-4 (front)
PR-8 (rear)
FFD-6, "
NVH Troubleshooting Chart
"
RFD-7, "
NVH Troubleshooting Chart
"
FAX-4, "
NVH Troubleshooting Chart
"
RAX-4, "
NVH Troubleshooting Chart
"
FSU-4, "
NVH Troubleshooting Chart
"
RSU-5, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
PR-3, "
NVH Troubleshooting Chart
"
BR-5, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
Possible cause and suspected parts
Uneven rotation torque
Rotation imbalance
Excessive run out
Differential
Axle
Suspension
Tires
Road wheel
Drive shaft
Brakes
Steering
Symptom Noise
×××××××××××
Shake ×××××××
Vibration ××××××××

REAR PROPELLER SHAFTPR-9
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Revision: November 2009 2006 QX56
REMOVAL
1. Move the A/T select lever to the N position and release the parking brake.
2. Put matching marks on the rear propeller shaft flange yoke and
the companion flange of the rear final drive as shown.
CAUTION:
For matching marks, use paint. Never damage the rear pro-
peller shaft flange yoke or the companion flange.
3. Remove the bolts, then remove the propeller shaft from the rear final drive and A/T.
INSPECTION AFTER REMOVAL

Inspect the propeller shaft run out. If run out exceeds the limit,
replace the propeller shaft assembly.

While holding the flange yoke on one side, check axial play of
the joint as shown. If the journal axial play exceeds the specifi-
cation, repair or replace as necessary.

Check the propeller shaft for bend and damage. If damage is
detected, replace the propeller shaft assembly.
INSTALLATION
Installation is in the reverse order of removal.

After installation, check for vibration by driving the vehicle. Refer to PR-3, "NVH Troubleshooting Chart" .
CAUTION:
Do not reuse the bolts and nuts. Always install new ones.
WDIA0049E
Propeller shaft run out limit : 1.02 mm (0.0402 in) or less
LDIA0121E
Journal axial play : 0.02 mm (0.0008 in) or less
LDIA0117E

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPS-5
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Revision: November 2009 2006 QX56
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEGS000U8
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
PS-6PS-6PS-18PS-18PS-18PS-6PS-7PS-7
EM-13, "
Checking Drive Belts
"
PS-7PS-13PS-15PS-11PS-10PS-15

PR-3, "
NVH Troubleshooting Chart
"
FFD-6, "
NVH Troubleshooting Chart
"
FAX-4, "
NVH Troubleshooting Chart
"
FSU-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
FAX-4, "
NVH Troubleshooting Chart
"
BR-5, "
NVH Troubleshooting Chart
"
Possible cause and sus-
pected 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 × × ×××× ×

STEERING WHEELPS-7
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Revision: November 2009 2006 QX56
STEERING WHEELPFP:48430
On-Vehicle Inspection and ServiceEGS000UC
CHECKING CONDITION OF INSTALLATION

Check installation condition of steering gear assembly, front suspension, axle and steering column.

Check if movement exists when steering wheel is moved up and down, to the left and right and to the axial
direction.

Check if the mounting nuts for steering gear assembly are loose.
Refer to PS-15, "
POWER STEERING GEAR AND LINKAGE" .
CHECKING STEERING WHEEL PLAY
1. Turn tires straight ahead, start engine, then turn steering 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 steering wheel is in the neutral position.
2. If it is not in the neutral position, remove steering wheel and reinstall it correctly.
3. If the neutral position cannot be attained by repositioning the steering wheel two teeth or less on steering stem, loosen tie-rod lock nuts of steering outer sockets, 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-38, "
Tire" .
5. Check steering wheel turning force using Tool when steering wheel has been turned 360 ° from the neutral position.
6. If steering wheel turning force is out of specification, inspect the following:

Steering column. Refer to PS-11, "INSPECTION AFTER
REMOVAL" .

Power steering oil pump. Refer to PS-21, "CHECKING
RELIEF OIL PRESSURE" .
7. If steering column and power steering oil pump meet specifications, replace steering gear. Refer to PS-15,
"Removal and Installation" .
End play of the axial direction for steering wheel : 0 mm (0 in)
LGIA0024E
Steering wheel play on the outer circumference : 0
− 35 mm (0 − 1.38 in)
Tool number : J-44372
Steering wheel
turning force : 39 N (4 kg-f, 9 lb-f) or less
WGIA0035E