2007 INFINITI QX56 service

PB-6
< SERVICE INFORMATION >
PARKING BRAKE SHOE
PARKING BRAKE SHOE
Removal and InstallationINFOID:0000000003532758
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 FA X - 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.
INSPECTION AFTER REMOVAL
Lining Thickness Inspection
1. Back plate 2. Shoes 3. Toggle lever
4. Return springs 5. Retainers 6. Adjuster
7. Anti-rattle pins
WFIA0164E

PARKING BRAKE SHOE
PB-7
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• 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-10
.
• 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, "
Component" .
• 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, "
On-Vehicle
Service" .
2. Perform parking brake burnishing operation by driving the vehicle forward under the following conditions:
CAUTION:
• To prevent lining from getting too hot, allow a cool off period of approximately 5 minutes after
every break-in operation.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
< SERVICE INFORMATION >
PARKING BRAKE SHOE
• Do not perform excessive break-in operations, because it may cause uneven or early wear of lin-
ing.
3. After burnishing operation, check parking brake pedal stroke. Readjust if it is now longer than the speci-
fied stroke. Refer to PB-3, "
On-Vehicle Service" .

SERVICE DATA AND SPECIFICATIONS (SDS)
PB-9
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SERVICE DATA AND SPECIFICATIONS (SDS)
Parking Drum BrakeINFOID:0000000003532759
Unit: mm (in)
Parking Brake ControlINFOID:0000000003532760
Ty p eDrum
Brake liningStandard 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 typeFoot 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-1
ELECTRICAL
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SECTION PG
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CONTENTS
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
POWER SUPPLY ROUTING CIRCUIT ...............3
Schematic .................................................................3
Wiring Diagram - POWER - ......................................5
Fuse ........................................................................16
Fusible Link .............................................................16
Circuit Breaker (Built Into BCM) ..............................16
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) .................
17
System Description .................................................17
CAN Communication System Description ...............18
Function of Detecting Ignition Relay Malfunction ....18
CONSULT-II Function (IPDM E/R) ..........................18
Auto Active Test ......................................................20
Terminal and Reference Value for IPDM E/R .........22
IPDM E/R Terminal Arrangement ...........................26
IPDM E/R Power/Ground Circuit Inspection ...........26
Inspection with CONSULT-II (Self-Diagnosis) ........27
Removal and Installation of IPDM E/R ....................28
GROUND CIRCUIT ............................................29
Ground Distribution ..................................................29
HARNESS .........................................................39
Harness Layout .......................................................39
Wiring Diagram Codes (Cell Codes) .......................59
ELECTRICAL UNITS LOCATION ....................63
Electrical Units Location ..........................................63
HARNESS CONNECTOR .................................66
Description ...............................................................66
ELECTRICAL UNITS ........................................68
Terminal Arrangement .............................................68
STANDARDIZED RELAY .................................69
Description ...............................................................69
SUPER MULTIPLE JUNCTION (SMJ) .............71
Terminal Arrangement .............................................71
FUSE BLOCK - JUNCTION BOX (J/B) ............73
Terminal Arrangement .............................................73
FUSE AND FUSIBLE LINK BOX ......................74
Terminal Arrangement .............................................74
FUSE AND RELAY BOX ..................................75
Terminal Arrangement .............................................75

PG-2
< SERVICE INFORMATION >
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003533829
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

POWER SUPPLY ROUTING CIRCUIT
PG-3
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POWER SUPPLY ROUTING CIRCUIT
SchematicINFOID:0000000003533830
For detailed ground distribution, refer to PG-29, "Ground Distribution".
WKWA3818E

PG-4
< SERVICE INFORMATION >
POWER SUPPLY ROUTING CIRCUIT
WKWA5431E