service INFINITI QX56 2011 Factory Service Manual

SERVICE DATA AND SPECIFICATIONS (SDS)
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OPISTON PIN
Unit: mm (in)
CONNECTING ROD
Unit: mm (in)
*: After installing in connecting rod
CRANKSHAFT
End gap
Top 0.23 - 0.28 (0.0091 - 0.0110) 0.50 (0.0197)
2nd 0.50 - 0.65 (0.0197 - 0.0256) 0.84 (0.0331)
Oil (rail ring) 0.20 - 0.60 (0.0079 - 0.0236) 0.95 (0.0374)
Items Standard Limit
Piston pin outer diameter 21.989 - 21.995 (0.8657 - 0.8659) —
Piston to piston pin oil clearance 0.002 - 0.006 (0.0001 - 0.0002) —
Connecting rod bushing oil clearance 0.005 - 0.017 (0.0002 - 0.0007) 0.030 (0.0012)
Items Standard Limit
Center distance 154.45 - 154.55 (6.08 - 6.08) —
Bend [per 100 (3.94)] — 0.15 (0.0059)
Torsion [per 100 (3.94)] — 0.30 (0.0118)
Connecting rod bushing inner diameter* 22.000 - 22.006 (0.8661 - 0.8664) —
Connecting rod big end diameter (Without bearing) Grade No. A 57.000 - 57.001 (2.2441 - 2.2441)
Grade No. B 57.001 - 57.002 (2.2441 - 2.2442)
Grade No. C 57.002 - 57.003 (2.2442 - 2.2442)
Grade No. D 57.003 - 57.004 (2.2442 - 2.2442)
Grade No. E 57.004 - 57.005 (2.2442 - 2.2443)
Grade No. F 57.005 - 57.006 (2.2443 - 2.2443)
Grade No. G 57.006 - 57.007 (2.2443 - 2.2444)
Grade No. H 57.007 - 57.008 (2.2444 - 2.2444)
Grade No. J 57.008 - 57.009 (2.2444 - 2.2444)
Grade No. K 57.009 - 57.010 (2.2444 - 2.2445)
Grade No. L 57.010 - 57.011 (2.2445 - 2.2445)
Grade No. M 57.011 - 57.012 (2.2445 - 2.2446)
Grade No. N 57.012 - 57.013 (2.2446 - 2.2446)
Side clearance 0.20 - 0.40 (0.0079 - 0.0158) 0.40 (0.0157)
Revision: 2010 May2011 QX56

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< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Unit: mm (in)
Main journal diameter. “Dm” grade
(No. 1 and 5 journal)StandardGrade No. G
Grade No. H
Grade No. J
Grade No. K
Grade No. L
Grade No. M
Grade No. N
Grade No. P
Grade No. R
Grade No. S
Grade No. T
Grade No. U
Grade No. V
Grade No. W
Grade No. X
Grade No. Y
Grade No. 1
Grade No. 2
Grade No. 3
Grade No. 4
Grade No. 5
Grade No. 6
Grade No. 7
Grade No. 9 63.964 - 63.963 (2.5183 - 2.5182)
63.963 - 63.962 (2.5182 - 2.5182)
63.962 - 63.961 (2.5182 - 2.5181)
63.961 - 63.960 (2.5181 - 2.5181)
63.960 - 63.959 (2.5181 - 2.5181)
63.959 - 63.958 (2.5181 - 2.5180)
63.958 - 63.957 (2.5180 - 2.5180)
63.957 - 63.956 (2.5180 - 2.5179)
63.956 - 63.955 (2.5179 - 2.5179)
63.955 - 63.954 (2.5179 - 2.5179)
63.954 - 63.953 (2.5179 - 2.5178)
63.953 - 63.952 (2.5178 - 2.5178)
63.952 - 63.951 (2.5178 - 2.5178)
63.951 - 63.950 (2.5178 - 2.5177)
63.950 - 63.949 (2.5177 - 2.5177)
63.949 - 63.948 (2.5177 - 2.5176)
63.948 - 63.947 (2.5176 - 2.5176)
63.947 - 63.946 (2.5176 - 2.5176)
63.946 - 63.945 (2.5176 - 2.5175)
63.945 - 63.944 (2.5175 - 2.5175)
63.944 - 63.943 (2.5175 - 2.5174)
63.943 - 63.942 (2.5174 - 2.5174)
63.942 - 63.941 (2.5174 - 2.5174)
63.941 - 63.940 (2.5174 - 2.5173)
Main journal diameter. “Dm” grade
(No. 2, 3 and 4 journal) StandardGrade No. A
Grade No. B
Grade No. C
Grade No. D
Grade No. E
Grade No. F
Grade No. G
Grade No. H
Grade No. J
Grade No. K
Grade No. L
Grade No. M
Grade No. N
Grade No. P
Grade No. R
Grade No. S
Grade No. T
Grade No. U
Grade No. V
Grade No. W
Grade No. X
Grade No. Y
Grade No. 1
Grade No. 2 63.963 - 63.964 (2.5182 - 2.5183)
63.962 - 63.963 (2.5182 - 2.5182)
63.961 - 63.962 (2.5181 - 2.5182)
63.960 - 63.961 (2.5181 - 2.5181)
63.959 - 63.960 (2.5181 - 2.5181)
63.958 - 63.959 (2.5180 - 2.5181)
63.957 - 63.958 (2.5180 - 2.5180)
63.956 - 63.957 (2.5179 - 2.5180)
63.955 - 63.956 (2.5179 - 2.5179)
63.954 - 63.955 (2.5179 - 2.5179)
63.953 - 63.954 (2.5178 - 2.5179)
63.952 - 63.953 (2.5178 - 2.5178)
63.951 - 63.952 (2.5178 - 2.5178)
63.950 - 63.951 (2.5177 - 2.5178)
63.949 - 63.950 (2.5177 - 2.5177)
63.948 - 63.949 (2.5176 - 2.5177)
63.947 - 63.948 (2.5176 - 2.5176)
63.946 - 63.947 (2.5176 - 2.5176)
63.945 - 63.946 (2.5175 - 2.5176)
63.944 - 63.945 (2.5175 - 2.5175)
63.943 - 63.944 (2.5174 - 2.5175)
63.942 - 63.943 (2.5174 - 2.5174)
63.941 - 63.942 (2.5174 - 2.5174)
63.940 - 63.941 (2.5173 - 2.5174)
Pin journal diameter. “Dp” grade Standard Grade No. 0
Grade No. 1
Grade No. 253.968 - 53.974 (2.1247 - 2.1250)
53.962 - 53.968 (2.1245 - 2.1247)
53.956 - 53.962 (2.1243 - 2.1245)
SEM645
Revision: 2010 May2011 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)
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Main BearingINFOID:0000000006289596
MAIN BEARING
UNDERSIZE
Unit: mm (in)
MAIN BEARING OIL CLEARANCE
Center distance “r”
45.96 - 46.04 (1.8095 - 1.8126)
Ta p e r Limit 0.0025 (0.0001)
Out-of-round 0.0025 (0.0001)
Crankshaft runout [TIR*] Standard Less than 0.05 (0.002)
Limit 0.10 (0.0039)
Crankshaft end play Standard 0.10 - 0.26 (0.0039 - 0.0102)
Limit 0.30 (0.012)
Grade number Thickness mm (in) Width mm (in) Identification color Remarks
0 2.483 - 2.486 (0.0978 - 0.0979)
19.9 - 20.1
(0.783 - 0.791) Black
Grade is the same
for upper and lower
bearings.
1 2.486 - 2.489 (0.0979 - 0.0980) Brown
2 2.489 - 2.492 (0.0980 - 0.0981) Green
3 2.492 - 2.495 (0.0981 - 0.0982) Yellow
4 2.495 - 2.498 (0.0982 - 0.0983) Blue
5 2.498 - 2.501 (0.0983 - 0.0985) Pink
6 2.501 - 2.504 (0.0985 - 0.0986) Purple
7 2.504 - 2.507 (0.0986 - 0.0987) White
8 2.507 - 2.510 (0.0987 - 0.0988) Red
01 UPR 2.483 - 2.486 (0.0978 - 0.0979) Black
Grade and color are
different for upper
and lower bearings.
LWR 2.486 - 2.489 (0.0979 - 0.0980) Brown
12 UPR 2.486 - 2.489 (0.0979 - 0.0980) Brown
LWR 2.489 - 2.492 (0.0980 - 0.0981) Green
23 UPR 2.489 - 2.492 (0.0980 - 0.0981) Green
LWR 2.492 - 2.495 (0.0981 - 0.0982) Yellow
34 UPR 2.492 - 2.495 (0.0981 - 0.0982) Yellow
LWR 2.495 - 2.498 (0.0982 - 0.0983) Blue
45 UPR 2.495 - 2.498 (0.0982 - 0.0983) Blue
LWR 2.498 - 2.501 (0.0983 - 0.0985) Pink
56 UPR 2.498 - 2.501 (0.0983 - 0.0985) Pink
LWR 2.501 - 2.504 (0.0985 - 0.0986) Purple
67 UPR 2.501 - 2.504 (0.0985 - 0.0986) Purple
LWR 2.504 - 2.507 (0.0986 - 0.0987) White
78 UPR 2.504 - 2.507 (0.0986 - 0.0987) White
LWR 2.507 - 2.510 (0.0987 - 0.0988) Red
Items Thickness Main journal diameter
0.25 (0.0098) 2.618 - 2.626 (0.1031 - 0.1034) Grind so that bearing clearance is the specified value.
Revision: 2010 May2011 QX56

EM-142
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Unit: mm (in)
*: Actual clearance
Connecting Rod BearingINFOID:0000000006289597
CONNECTING ROD BEARING
UNDERSIZE
Unit: mm (in)
CONNECTING ROD BEARING OIL CLEARANCE
Unit: mm (in)
*: Actual clearanceItems Standard Limit
Main bearing oil clearance No.1 and 5 0.001 - 0.011 (0.00004 - 0.00043)*
0.065 (0.0026)
No.2, 3 and 4 0.007 - 0.017 (0.0003 - 0.0007)*
Grade number Thickness mm (in) Width mm (in) Identification color (mark)
1 1.500 - 1.503 (0.0591 - 0.0592)
18.1 - 18.3
(0.713 - 0.720) Black
2 1.503 - 1.506 (0.0592 - 0.0593) Brown
3 1.506 - 1.509 (0.0593 - 0.0594) Green
4 1.509 - 1.512 (0.0594 - 0.0595) Yellow
Items Thickness Pin journal diameter
0.25 (0.0098) 1.627 - 1.635 (0.0641 - 0.0644) Grind so that bearing clearance is the specified value.
Items Standard Limit
Connecting rod bearing oil clearance 0.020 - 0.039 (0.0008 - 0.0015)* 0.070 (0.0028)
Revision: 2010 May2011 QX56

EX-1
ENGINE
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CONTENTS
EXHAUST SYSTEM
PRECAUTION ................ ...............................2
PRECAUTIONS .............................................. .....2
Removal and Installation ..................................... ......2
PREPARATION ............................................3
PREPARATION .............................................. .....3
Special Service Tool ........................................... ......3
Commercial Service Tool ..........................................3
PERIODIC MAINTENANCE .........................4
EXHAUST SYSTEM ...........................................4
Inspection ............................................................ .....4
REMOVAL AND INSTALLATION ................5
EXHAUST SYSTEM ...........................................5
Exploded View ..................................................... .....5
Removal and Installation ..........................................5
Inspection .................................................................6
Revision: 2010 May2011 QX56

PREPARATIONEX-3
< PREPARATION >
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PREPARATION
PREPARATION
Special Service ToolINFOID:0000000006289692
Commercial Service ToolINFOID:0000000006289693
Tool number
(Kent-Moore No.)
Tool name
Description
KV10114400
(J-38365)
Heated oxygen sensor wrench Loosening or tightening heated oxygen sen-
sor 2
For 22 mm (0.87 in) (a) width hexagon nut
S-NT636
Tool name
Description
Power tool Loosening bolts and nuts
PBIC0190E
Revision: 2010 May2011 QX56

EXL-2
EXTERIOR LAMP BATTERY SAVER SYSTEM :
System Description .................................................
21
DIAGNOSIS SYSTEM (BCM) ............................22
COMMON ITEM ..................................................... ...22
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) ................................................. ...
22
HEADLAMP ........................................................... ...23
HEADLAMP : CONSULT-III Function (BCM -
HEAD LAMP) ..........................................................
23
FLASHER ............................................................... ...25
FLASHER : CONSULT-III Function (BCM -
FLASHER) ..............................................................
25
DIAGNOSIS SYSTEM (IPDM E/R) ....................27
Diagnosis Description .......................................... ...27
CONSULT-III Function (IPDM E/R) ........................29
DIAGNOSIS SYSTEM (AFS) .............................32
CONSULT-III Function (ADAPTIVE LIGHT) ........ ...32
ECU DIAGNOSIS INFORMATION ..............34
BCM, IPDM E/R .............................................. ...34
List of ECU Reference ......................................... ...34
AFS CONTROL UNIT ........................................35
Reference Value .................................................. ...35
Fail-Safe .................................................................38
DTC Inspection Priority Chart .................................39
DTC Index ..............................................................39
WIRING DIAGRAM .....................................40
EXTERIOR LIGHTING SYSTEM .................... ...40
Wiring Diagram .................................................... ...40
BASIC INSPECTION ...................................59
DIAGNOSIS AND REPAIR WORKFLOW ...... ...59
Work Flow ............................................................ ...59
INSPECTION AND ADJUSTMENT ...................61
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT (AFS CONTROL UNIT) .............. ...
61
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT (AFS CONTROL UNIT) : De-
scription ..................................................................
61
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT (AFS CONTROL UNIT) : Special
Repair Requirement ...............................................
61
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT (HEIGHT SENSOR) ................... ...
61
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT (HEIGHT SENSOR) : Descrip-
tion ....................................................................... ...
61
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT (HEIGHT SENSOR) : Special
Repair Requirement ............................................. ...
61
LEVELIZER ADJUSTMENT ......................................61
LEVELIZER ADJUSTMENT : Description ..............61
LEVELIZER ADJUSTMENT : Special Repair Re-
quirement ............................................................. ...
61
DTC/CIRCUIT DIAGNOSIS ........................63
B2503, B2504 SWIVEL ACTUATOR ............. ...63
DTC Logic ............................................................ ...63
Diagnosis Procedure ...............................................64
Component Inspection ............................................67
B2513 HEIGHT SENSOR UNUSUAL [FR] .......68
DTC Logic ............................................................ ...68
Diagnosis Procedure ...............................................68
B2514 HEIGHT SENSOR UNUSUAL [RR] .......71
DTC Logic ............................................................ ...71
Diagnosis Procedure ...............................................71
B2516 SHIFT SIGNAL [P, R] ............................74
DTC Logic ............................................................ ...74
Diagnosis Procedure ...............................................74
B2517 VEHICLE SPEED SIGNAL ....................75
DTC Logic ............................................................ ...75
Diagnosis Procedure ...............................................75
B2519 LEVELIZER CALIBRATION ..................76
DTC Logic ............................................................ ...76
Diagnosis Procedure ...............................................76
B2521 ECU CIRCUIT ........................................77
DTC Logic ............................................................ ...77
Diagnosis Procedure ...............................................77
C0126 STEERING ANGLE SENSOR SIGNAL ...80
DTC Logic ............................................................ ...80
Diagnosis Procedure ...............................................80
C0428 STEERING ANGLE SENSOR CALI-
BRATION ...........................................................
81
DTC Logic ............................................................ ...81
Diagnosis Procedure ...............................................81
U1000 CAN COMM CIRCUIT ............................82
Description ........................................................... ...82
DTC Logic ...............................................................82
Diagnosis Procedure ...............................................82
U1010 CONTROL UNIT (CAN) .........................83
DTC Logic ............................................................ ...83
Diagnosis Procedure ...............................................83
POWER SUPPLY AND GROUND CIRCUIT .....84
AFS CONTROL UNIT ............................................. ...84
AFS CONTROL UNIT : Diagnosis Procedure .........84
Revision: 2010 May2011 QX56

EXL-4
HAZARD SWITCH ...........................................133
Exploded View ..................................................... ..133
AFS SWITCH ...................................................134
Exploded View ..................................................... ..134
Removal and Installation .......................................134
AFS CONTROL UNIT ......................................135
Exploded View ..................................................... ..135
Removal and Installation .......................................135
HEIGHT SENSOR ............................................136
Exploded View ..................................................... ..136
Removal and Installation .......................................136
REAR COMBINATION LAMP .........................138
Exploded View ..................................................... ..138
Removal and Installation .......................................138
HIGH-MOUNTED STOP LAMP .......................140
Exploded View ..................................................... .140
Removal and Installation .......................................140
BACK-UP LAMP ............................................ ..141
Exploded View ..................................................... .141
Removal and Installation .......................................141
Replacement .........................................................142
LICENSE PLATE LAMP ...................................143
Exploded View ..................................................... .143
Removal and Installation .......................................143
Replacement .........................................................143
SERVICE DATA AND SPECIFICATIONS
(SDS) ........ .................................................
145
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ..
145
Bulb Specifications ............................................... .145
Revision: 2010 May2011 QX56

PRECAUTIONSEXL-5
< PRECAUTION > [XENON TYPE]
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006450052
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

DIAGNOSIS SYSTEM (BCM)EXL-23
< SYSTEM DESCRIPTION > [XENON TYPE]
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HEADLAMP
HEADLAMP : CONSULT-III Func tion (BCM - HEAD LAMP)INFOID:0000000006213911
WORK SUPPORT
CONSULT screen item Indication/Unit Description
Vehicle Speed km/h Vehicle speed of the moment a particular DTC is detected
Odo/Trip Meter km Total mileage (Odometer value) of the moment a particular DTC is detected
Vehicle Condition SLEEP>LOCK
Power position status of
the moment a particular
DTC is detected While turning BCM status from low power consumption mode to
normal mode (Power supply position is “LOCK”)
SLEEP>OFF While turning BCM status from low power consumption mode to
normal mode (Power supply position is “OFF”.)
LOCK>ACC While turning power supply position from “LOCK” to “ACC”
ACC>ON While turning power supply position from “ACC” to “IGN”
RUN>ACC While turning power supply position
from “RUN” to “ACC” (Vehicle
is stopping and selector lever is except P position.)
CRANK>RUN While turning power su
pply position from “CRANKING” to “RUN”
(From cranking up the engine to run it)
RUN>URGENT While turning power su
pply position from “RUN“ to “ACC” (Emer-
gency stop operation)
ACC>OFF While turning power supply position from “ACC” to “OFF”
OFF>LOCK While turning power supply position from “OFF” to “LOCK”
OFF>ACC While turning power supply position from “OFF” to “ACC”
ON>CRANK While turning po wer supply position from “IGN” to “CRANKING”
OFF>SLEEP While turning BCM status from normal mode (Power supply posi-
tion is “OFF”.) to low power consumption mode
LOCK>SLEEP While turning BCM status from normal mode (Power supply posi-
tion is “LOCK”.) to low power consumption mode
LOCK Power supply position is “LOCK” (Ignition switch OFF with steer-
ing is locked.)
OFF Power supply position
is “OFF” (Ignition switch OFF with steering
is unlocked.)
ACC Power supply position is “ACC” (Ignition switch ACC)
ON Power supply position is “IGN” (Ignition switch ON with engine
stopped)
ENGINE RUN Power supply posi
tion is “RUN” (Ignition switch ON with engine
running)
CRANKING Power supply position is “CRANKING” (At engine cranking)
IGN Counter 0 - 39 The number of times that ignition switch is turned ON after DTC is detected
 The number is 0 when a malfunction is detected now.
 The number increases like 1
→ 2 → 3...38 → 39 after returning to the normal condition
whenever ignition switch OFF → ON.
 The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.
Service item Setting item Setting
CUSTOM A/LIGHT SETTING MODE 1*
1Normal
MODE 2 More sensitive setting than normal setting (Turns ON earlier than normal opera-
tion)
MODE 3 More sensitive setting than MODE 2 (Turns ON earlier than MODE 2)
MODE 4 Less sensitive setting than normal setting (Turns ON later than normal operation)
Revision: 2010 May2011 QX56