INFINITI QX56 2011 Factory Service Manual

PG-2
Main Harness ........................................................149
Body Harness ........................................................150
Chassis Harness ...................................................152
Door Harness ........................................................153
Room Lamp Harness .............................................158
BASIC INSPECTION ..................................159
BATTERY INSPECTI ON ................................ .159
How to Handle Battery ......................................... ..159
Work Flow ..............................................................161
FUSE INSPECTION .........................................162
How To Check ..................................................... ..162
FUSIBLE LINK INSPECTION ..........................163
How To Check ..................................................... ..163
REMOVAL AND INSTALLATION .............164
BATTERY ....................................................... ..164
Exploded View ..................................................... .164
Removal and Installation .......................................164
BATTERY TERMINAL WITH FUSIBLE LINK ..165
Exploded View ......................................................165
Removal and Installation .......................................165
SERVICE DATA AND SPECIFICATIONS
(SDS) ........ .................................................
166
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ..
166
Battery .................................................................. .166
Revision: 2010 May2011 QX56

PG
PRECAUTIONSPG-3
< PRECAUTION >
C
DE
F
G H
I
J
K L
B A
O P
N
PRECAUTION
PRECAUTIONS
Precaution for Supplemental
Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006275744
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty 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 AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision that would result in air ba g inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
 When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.
 When using air or electric power tools or hammers , always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Revision: 2010 May2011 QX56

PG-4
< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service ToolsINFOID:0000000006288131
Tool number
(Kent-Moore No.)
Tool nameDescription
—
(J-48087)
Battery Service Center Tests battery.
For operating instructions, refer to Technical
Service Bulletin and Battery Service Center
User Guide.
WKIA5280E
Revision: 2010 May2011 QX56

PG
COMPONENT PARTSPG-5
< SYSTEM DESCRIPTION >
C
DE
F
G H
I
J
K L
B A
O P
N
SYSTEM DESCRIPTION
COMPONENT PARTS
Circuit BreakerINFOID:0000000006275745
The PTC thermistor generates heat in response to current flow. The
temperature (and resistance) of t
he thermistor element varies with
current flow. Excessive current flow will cause the element's temper-
ature to rise. When the temperature reaches a specified level, the
electrical resistance will rise shar ply to control the circuit current.
Reduced current flow will cause the element to cool. Resistance falls
accordingly and normal circuit current flow is allowed to resume.
BatteryINFOID:0000000006275746
Harness ConnectorINFOID:0000000006275747
HARNESS CONNECTOR (TAB-LOCKING TYPE)
 The tab-locking type connectors help prevent accidental looseness or disconnection.
 The tab-locking type connectors are disconnected by pushi ng or lifting the locking tab(s). Refer to the figure
below.
CAUTION:
Never pull the harness or wires when disconnecting the connector.
SEL109W
Ty pe 115D31R
20 hour rate capacity [V – Ah] 12 – 82
Cold cranking current (For reference value) [A] 782
Revision: 2010 May2011 QX56

PG-6
< SYSTEM DESCRIPTION >
COMPONENT PARTS
[Example]
HARNESS CONNECTOR (SLIDE-LOCKING TYPE)
 A new style slide-locking type connector is used on certain systems and components, especially those
related to OBD.
 The slide-locking type connectors help prevent incomplete locking and accidental looseness or disconnec-
tion.
 The slide-locking type connectors are disconnected by pushing or pulling the slider. Refer to the figure below.
CAUTION:
 Never pull the harness or wires when disconnecting the connector.
 Be careful not to damage the connector su pport bracket when disconnecting the connector.
SEL769DA
Revision: 2010 May2011 QX56

PG
COMPONENT PARTSPG-7
< SYSTEM DESCRIPTION >
C
DE
F
G H
I
J
K L
B A
O P
N
[Example]
HARNESS CONNECTOR (LEVER LOCKING TYPE)
 Lever locking type harness connectors are used on cert
ain control units and control modules such as ECM,
ABS actuator and electric unit (control unit), etc.
 Lever locking type harness connectors are also us ed on super multiple junction (SMJ) connectors.
 Always confirm the lever is fully locked in place by mo ving the lever as far as it will go to ensure full connec-
tion.
CAUTION:
SEL769V
Revision: 2010 May2011 QX56

PG-8
< SYSTEM DESCRIPTION >
COMPONENT PARTS
Always confirm the lever is fully released (loosened) before attempti ng to disconnect or connect these
connectors to avoid damage to th e connector housing or terminals.
Standardized RelayINFOID:0000000006275748
NORMAL OPEN, NORMAL CLOSED AND MIXED TYPE RELAYS
Relays can mainly be divided into three types: normal open, normal closed and mixed type relays.
TYPE OF STANDARDIZED RELAYS
LKIA0670E
1. Control unit with single lever
A. Fasten
B. Loosen
C. Lever 2. Control unit with dual levers
A. Levers
B. Fasten
C. Loosen 3. SMJ connector
A. Lever
B. Fasten
C. Loosen
SEL881H
Revision: 2010 May2011 QX56

PG
COMPONENT PARTSPG-9
< SYSTEM DESCRIPTION >
C
DE
F
G H
I
J
K L
B A
O P
N
1M ···················· 1 Make 2M ···················· 2 Make
1T ···················· 1 Transfer 1M·1B ···················· 1 Make 1 Break
SEL882H
Revision: 2010 May2011 QX56

PG-10
< SYSTEM DESCRIPTION >
COMPONENT PARTS
SEL188W
Revision: 2010 May2011 QX56

PG
POWER SUPPLY ROUTING CIRCUITPG-11
< WIRING DIAGRAM >
C
DE
F
G H
I
J
K L
B A
O P
N
WIRING DIAGRAM
POWER SUPPLY ROUTING CIRCUIT
Wiring Diagram - BATTERY POWER SUPPLY -INFOID:0000000006275749
JCMWM8347GB
Revision: 2010 May2011 QX56