INFINITI QX56 2011 Factory Service Manual

HOW TO FOLLOW TROUBLE DIAGNOSES
GI-7
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Key to Symbols Signifying M easurements or ProceduresINFOID:0000000006280843
JPAIA0397GB
Revision: 2010 May2011 QX56

GI-8
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HOW TO FOLLOW TROUBLE DIAGNOSES
JPAIA0398GB
Revision: 2010 May2011 QX56

HOW TO READ WIRING DIAGRAMSGI-9
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O PHOW TO READ WIRING DIAGRAMS
Connector SymbolsINFOID:0000000006282193
Most of connector symbols in wiring diagrams are shown from the terminal side.
 Connector symbols shown from the terminal side are enclosed by a single line and followed by the direction mark.
 Connector symbols shown from the harness side are enclosed by
a double line and followed by the direction mark.
 Certain systems and components, especially those related to
OBD, may use a new style slide-locking type harness connector.
For description and how to disconnect, refer to PG section,
“Description”, “HARNESS CONNECTOR”.
 Male and female terminals Connector guides for male terminals are shown in black and
female terminals in white in wiring diagrams.
SAIA0257E
SGI363
Revision: 2010 May2011 QX56

GI-10
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HOW TO READ WIRING DIAGRAMS
Sample/Wiring Diagram -Example-
INFOID:0000000006282194
Each section includes wiring diagrams.
Description
JCAWA0150GB
Number Item Description 1 Power supply  This means the power supply of fusible link or fuse.
2 Fuse  “/” means the fuse.
3 Current rating of fus-
ible link/fuse  This means the current rating of the fusible link or fuse.
4 Number of fusible link/
fuse
 This means the number of fusible link or fuse location.
5 Fusible link  “X” means the fusible link.
6 Connector number  Alphabetic characters show to which harness the connector is placed.
 Numeric characters show the identification number of connectors.
7Switch  This shows that continuity exists between terminals 1 and 2 when the switch is in the A
position. Continuity exists between terminals 1 and 3 when the switch is in the B position.
8 Circuit (Wiring)  This means the wiring.
Revision: 2010 May2011 QX56

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SWITCH POSITIONS
Switches are shown in wiring diagrams as if the vehicle is in the “normal” condition.
A vehicle is in the “normal” condition when:
 ignition switch is “OFF”,
 doors, hood and trunk lid/back door are closed,
 pedals are not depressed, and
 parking brake is released.
MULTIPLE SWITCH
The continuity of multiple switch is described in two ways as shown below.
 The switch chart is used in schematic diagrams.
9 Shielded line  The line enclosed by broken line circle shows shield wire.
10 Connectors  This means that a transmission line bypasses two connectors or more.
11 Option abbreviation  This means the vehicle specifications which layouts the circuit between “ ”.
12 Relay  This shows an internal representation of the relay.
13 Optional splice  The open circle shows that the splice is optional depending on vehicle application.
14 Splice  The shaded circle “ ” means the splice.
15 System branch  This shows that the circuit is branched to other systems.
16 Page crossing  This circuit continues to an adjacent page.
17 Component name  This shows the name of a component.
18 Terminal number  This means the terminal number of a connector.
19 Ground (GND)  This shows the ground connection.
20 Explation of option
description  This shows a explanation of the option abbreviation used on the same page.
Number Item Description
SGI860
Revision: 2010 May2011 QX56

GI-12
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HOW TO READ WIRING DIAGRAMS
 The switch diagram is used in wiring diagrams.
Connector InformationINFOID:0000000006282195
Description
JSAIA0017GB
Number Item Description1 Connector number  Alphabetic characters show to which harness the connector is placed.
 Numeric characters show the identification number of connectors.
2 Connector type  This means the connector number. Refer to PG-144, "
How To Read Harness Layout".
3 Terminal number  This means the terminal number of a connector.
JCAWA0152GB
Revision: 2010 May2011 QX56

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4 Wire color  This shows a code for the color of the wire.
B = Black
W = White
R = Red
G = Green
L = Blue
Y = Yellow
LG = Light Green
BG = Beige BR = Brown
OR or O = Orange
P = Pink
PU or V (Violet) = Purple
GY or GR = Gray
SB = Sky Blue
CH = Dark Brown
DG = Dark Green
 When the wire color is striped, the base color is given first, followed by the stripe color as shown below:
Example: L/W = Blue with White Stripe
5 Connector  This means the connector information.
 This unit-side is described by the connector symbols.
Number Item Description
Revision: 2010 May2011 QX56

GI-14
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ABBREVIATIONS
ABBREVIATIONS
Abbreviation ListINFOID:0000000006280882
The following ABBREVIATIONS are used:
A
B
C
D
ABBREVIATION DESCRIPTION
A/C Air conditioner
A/C Air conditioning
A/F sensor Air fuel ratio sensor A/T Automatic transaxle/transmission
ABS Anti-lock braking system
ACCS Advance climate control system ACL Air cleaner
AP Accelerator pedal
APP Accelerator pedal position ATF Automatic transmission fluid AV Audio visual
AWD All wheel drive
ABBREVIATION DESCRIPTION BARO Barometric pressureBCM Body control module
BLSD Brake limited slip differential BPP Brake pedal positionBSI Blind spot intervention
BSW Blind spot warning
ABBREVIATION DESCRIPTION CKP Crankshaft positionCL Closed loop
CMP Camshaft position CPP Clutch pedal positionCTP Closed throttle position
CVT Continuously Variable transaxle/transmission
ABBREVIATION DESCRIPTION D
1Drive range first gear
D
2Drive range second gear
D
3Drive range third gear
D
4Drive range fourth gear
DCA Distance control assist DFI Direct fuel injection system
DLC Data link connector
DTC Diagnostic trouble code
Revision: 2010 May2011 QX56

ABBREVIATIONSGI-15
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ABBREVIATION DESCRIPTION E/T Exhaust temperature
EBD Electric brake force distribution EC Engine control
ECL Engine coolant level
ECM Engine control module ECT Engine coolant temperature
ECV Electrical control valve
EEPROM Electrically erasable programmable read only memory EFT Engine fuel temperature
EGR Exhaust gas recirculation
EGRT Exhaust gas recirculation temperature EGT Exhaust gas temperature
EOP Engine oil pressure EP Exhaust pressure
EPR Exhaust pressure regulator EPS Electronically controlled power steering
ESP Electronic stability program system
EVAP canister Evaporative emission canister EXC Exhaust control
ABBREVIATION DESCRIPTION FC Fan control
FCW Forward collision warning FIC Fuel injector controlFP Fuel pump
FR Front
FRP Fuel rail pressure FRT Fuel rail temperature
FTP Fuel tank pressure FTT Fuel tank temperature
ABBREVIATION DESCRIPTION GND GroundGPS Global positioning systemGST Generic scan tool
ABBREVIATION DESCRIPTION HBMC Hydraulic body-motion control systemHDD Hard disk drive
HO2S Heated oxygen sensor HOC Heated oxidation catalyst
Revision: 2010 May2011 QX56

GI-16
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ABBREVIATIONS
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ABBREVIATION DESCRIPTIONI/M Inspection and maintenanceIA Intake air
IAC Idle air control IAT Intake air temperature
IBA Intelligent brake assist IC Ignition control
ICC Intelligent cruise control
ICM Ignition control module
IPDM E/R Intelligent power distribution module engine room ISC Idle speed controlISS Input shaft speed
ABBREVIATION DESCRIPTION KS Knock sensor
ABBREVIATION DESCRIPTION LCD Liquid crystal display
LCU Local control unitLDP Lane departure prevention
LDW Lane departure warning LED Light emitting diode LH Left-hand
LIN Local interconnect network
ABBREVIATION DESCRIPTION M/T Manual transaxle/transmission
MAF Mass airflow
MAP Manifold absolute pressure MI Malfunction indicator
MIL Malfunction indicator lamp
ABBREVIATION DESCRIPTION NOX Nitrogen oxides
ABBREVIATION DESCRIPTION O2 Oxygen
O2S Oxygen sensor
OBD On board diagnostic OC Oxidation catalytic converter
OD OverdriveOL Open loop
OSS Output shaft speed
Revision: 2010 May2011 QX56