2009 INFINITI QX56 Factory Service Manual

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Page 1321 of 4171

INFINITI QX56 2009 Factory Service Manual
REAR FINAL DRIVEDLN-265
< DISASSEMBLY AND ASSEMBLY > [REAR FINAL DRIVE: R230]
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4. Assemble the collapsible spacer to the drive pinion. CAUTION:
Do not reuse collapsibl

Page 1322 of 4171

INFINITI QX56 2009 Factory Service Manual
DLN-266
< DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
REAR FINAL DRIVE
10. Apply anti-corrosive oil to the threads of the drive pinion and the
seating surface of the new drive pinion lock nut.

Page 1323 of 4171

INFINITI QX56 2009 Factory Service Manual
REAR FINAL DRIVEDLN-267
< DISASSEMBLY AND ASSEMBLY > [REAR FINAL DRIVE: R230]
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4. Align the lock pin hole on the differential case with the lock pin hole on the pinion

Page 1324 of 4171

INFINITI QX56 2009 Factory Service Manual
DLN-268
< DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
REAR FINAL DRIVE
10. Press the side bearing inner races into the differential case
using Tools.
CAUTION:
Do not reuse side bearing inner r

Page 1325 of 4171

INFINITI QX56 2009 Factory Service Manual
REAR FINAL DRIVEDLN-269
< DISASSEMBLY AND ASSEMBLY > [REAR FINAL DRIVE: R230]
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17. Apply a 3.2mm (0.126 in) bead of sealant to the mating surface of the carrier cover.

Page 1326 of 4171

INFINITI QX56 2009 Factory Service Manual
DLN-270
< SERVICE DATA AND SPECIFICATIONS (SDS) [REAR FINAL DRIVE: R230]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General Spec

Page 1327 of 4171

INFINITI QX56 2009 Factory Service Manual
SERVICE DATA AND SPECIFICATIONS (SDS)
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Unit: mm (in)
*: Always check with the Parts Departmen

Page 1328 of 4171

INFINITI QX56 2009 Factory Service Manual
EC-1
ENGINE
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SECTION EC
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CONTENTS
ENGINE CONTROL SYSTEM
VK56DE
BASIC INSPECTION ....... .............................
8
DIAGNOSIS AND REPAIR WORKFLOW ..... .....8
Trou

EC-1
ENGINE
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SECTION EC
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CONTENTS
ENGINE CONTROL SYSTEM
VK56DE
BASIC INSPECTION ....... .............................
8
DIAGNOSIS AND REPAIR WORKFLOW ..... .....8
Trouble Diagnosis Introduction ........................... ......8
INSPECTION AND ADJUSTMENT ....................13
Basic Inspection .................................................. ....13
Idle Speed and Ignition Timing Check ....................17
Procedure After Replacing ECM .............................17
VIN Registration ......................................................17
Accelerator Pedal Released Position Learning .......18
Throttle Valve Closed Position Learning .................18
Idle Air Volume Learning .........................................18
FUNCTION DIAGNOSIS ..............................21
ENGINE CONTROL SYSTEM ........................ ....21
System Diagram .................................................. ....21
Engine Control Component Parts Location .............22
MULTIPORT FUEL INJECTION SYSTEM .........28
System Description ............................................. ....28
ELECTRIC IGNITION SYSTEM ..................... ....31
System Description ............................................. ....31
AIR CONDITIONING CUT CONTROL ...............32
Input/Output Signal Chart .................................... ....32
System Description .................................................32
AUTOMATIC SPEED CONTROL DEVICE
(ASCD) ...............................................................
33
System Description ............................................. ....33
Component Description ...........................................34
CAN COMMUNICATION ....................................35
System Description ............................................. ....35
COOLING FAN CONTROL ................................36
Description .......................................................... ....36
EVAPORATIVE EMISSION SYSTEM ...............37
Description ........................................................... ....37
INTAKE VALVE TIMING CONTROL ................40
Description ...............................................................40
ON BOARD DIAGNOSTIC (OBD) SYSTEM ....41
Introduction ..............................................................41
Two Trip Detection Logic .........................................41
Emission-related Diagnostic Information .................42
Malfunction Indicator Lamp (MIL) ............................55
OBD System Operation Chart .................................58
CONSULT-III Function (ENGINE) ...........................63
Generic Scan Tool (GST) Function .........................72
COMPONENT DIAGNOSIS .........................74
TROUBLE DIAGNOSIS - SPECIFICATION
VALUE ...............................................................
74
Description ........................................................... ....74
Testing Condition .....................................................74
Inspection Procedure ...............................................74
Diagnosis Procedure ...............................................75
POWER SUPPLY AND GROUND CIRCUIT ....82
Diagnosis Procedure ...............................................82
Ground Inspection ...................................................85
U1000, U1001 CAN COMM CIRCUIT ...............86
Description ...............................................................86
On Board Diagnosis Logic .......................................86
DTC Confirmation Procedure ..................................86
Diagnosis Procedure ...............................................86
P0011, P0021 IVT CONTROL ...........................87
On Board Diagnosis Logic .......................................87
DTC Confirmation Procedure ..................................87
Diagnosis Procedure ...............................................88
Component Inspection .............................................92
P0031, P0032, P0051, P0052 A/F SENSOR 1
HEATER ............................................................
94
Revision: December 20092009 QX56

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