key INFINITI QX56 2011 Factory Service Manual

ECM
EC-103
< ECU DIAGNOSIS INFORMATION > [VK56VD]
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*1: 1st trip DTC No. is
the same as DTC No.
P1572 1572 ASCD BRAKE SW — 1 —
EC-438
(with ASCD)
EC-443
(with ICC)
P1574 1574 ASCD VHL SPD SEN — 1 — EC-447
(with ASCD)
EC-449
(with ICC)
P1606 1606 VVEL CONTROL MODULE — 1 or 2 × or — EC-451
P1607 1607 VVEL CONTROL MODULE — 1 ×EC-452
P1608 1608 VVEL SENSOR POWER/CIRC — 1 ×EC-453
P1610 1610 LOCK MODE — 2 — SEC-53
P1611 1611 ID DISCORD IMMU-ECM — 2 —SEC-54
P1612 1612 CHAIN OF ECM-IMMU — 2 — SEC-55
P1613 1613 ECM INT CIRC-IMMU — 2 —SEC-48
P1614 1614 CHAIN OF IMMU-KEY — 2 —SEC-56
P1615 1615 DIFFERENCE OF KEY — 2 —SEC-48
P1650 1650 STR MTR RELAY 2 — 2×SEC-48
P1651 1651 STR MTR RELAY — 2 ×SEC-48
P1652 1652 STR MTR SYS COMM — 1 ×SEC-48
P1730 1730 INTERLOCK — 2 ×TM-140
P1734 1734
7GR INCORRECT RATIO*7—2 ×TM-142
P1805 1805 BRAKE SW/CIRCUIT — 2 — EC-455
P2100 2100 ETC MOT PWR-B1 — 2×EC-458
P2101 2101 ETC FNCTN/CIRC-B1 — 1 ×EC-460
P2103 2103 ETC MOT PWR — 1 ×EC-458
P 2 11 8 2 11 8 E T C M O T- B 1 — 1 ×EC-464
P 2 11 9 2 11 9 E T C A C T R - B 1 — 1 ×EC-466
P2122 2122 APP SEN 1/CIRC — 1 ×EC-468
P2123 2123 APP SEN 1/CIRC — 1 ×EC-468
P2127 2127 APP SEN 2/CIRC — 1 ×EC-471
P2128 2128 APP SEN 2/CIRC — 1 ×EC-471
P2135 2135 TP SENSOR-B1 — 1 ×EC-475
P2138 2138 APP SENSOR — 1 ×EC-478
P2539 2539 LOW FUEL PRES SEN — 2 ×EC-483
P2541 2541 LOW FUEL PRES SEN — 2 ×EC-483
P2542 2542 LOW FUEL PRES SEN — 2 ×EC-483
P2713 2713 PRESS CONTROL SOL D — 2 ×TM-147
P2722 2722 PRESS CONTROL SOL E — 2 ×TM-148
P2731 2731 PRESS CONTROL SOL F — 2 ×TM-149
P2807 2807 PRESS CONTROL SOL G — 2 ×TM-150
P2A00 2A00 A/F SENSOR1 (B1) — 2 ×EC-487
P2A03 2A03 A/F SENSOR1 (B2) — 2 ×EC-487
DTC*1
Items
(CONSULT-III screen terms) SRT code Trip MIL Reference
page
CONSULT-III
GST*
2ECM*3
Revision: 2010 May2011 QX56

EC-140
< BASIC INSPECTION >[VK56VD]
BASIC INSPECTION
2. Rev engine between 2,000 and 3,000 rpm 2 or 3 times under no
load, then run engine at idle speed for approximately 1 minute.
3. Check idle speed.
For procedure, refer to EC-530, "
Inspection".
For specification, refer to EC-538, "
Idle Speed".
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 4.
4.PERFORM ACCELERATOR PEDAL RE LEASED POSITION LEARNING
1. Stop engine.
2. Perform EC-146, "
Work Procedure".
>> GO TO 5.
5.PERFORM THROTTLE VALVE CL OSED POSITION LEARNING
Perform EC-147, "
Work Procedure".
>> GO TO 6.
6.PERFORM IDLE AIR VOLUME LEARNING
Perform EC-148, "
Work Procedure".
Is Idle Air Volume Learning carried out successfully?
YES >> GO TO 7.
NO >> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.
7.CHECK IDLE SPEED AGAIN
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed. For procedure, refer to EC-530, "
Inspection".
For specification, refer to EC-538, "
Idle Speed".
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the Following.
 Check camshaft position sensor and circuit. Refer to EC-303, "
DTC Logic".
 Check crankshaft position sensor and circuit. Refer to EC-299, "
DTC Logic".
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace malfunctioning part. Then GO TO 4.
9.CHECK ECM FUNCTION
1. Substitute with a non-malfunctioning ECM to check EC M function. (ECM may be the cause of the incident,
although this is rare.)
2. Perform initialization of IVIS (NATS) system and regist ration of all IVIS (NATS) ignition key IDs. Refer to
SEC-51, "
ECM : Work Procedure".
>> GO TO 4.
10.CHECK IGNITION TIMING
1. Run engine at idle.
2. Check ignition timing with a timing light. For procedure, refer to EC-531, "
Inspection".
PBIA8513J
Revision: 2010 May2011 QX56

EC-142
< BASIC INSPECTION >[VK56VD]
BASIC INSPECTION
2. Perform initialization of IVIS (NATS) system and regist
ration of all IVIS (NATS) ignition key IDs. Refer to
SEC-51, "
ECM : Work Procedure".
>> GO TO 4.
19.INSPECTION END
If ECM is replaced during this BASIC INSPECTION procedure, perform EC-143, "
Work Procedure".
>> INSPECTION END
Revision: 2010 May2011 QX56

ADDITIONAL SERVICE WHEN REPLACING ECMEC-143
< BASIC INSPECTION > [VK56VD]
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ADDITIONAL SERVICE WHEN REPLACING ECM
DescriptionINFOID:0000000006217740
When replacing ECM, the following procedure must be performed.
Work ProcedureINFOID:0000000006217741
1.PERFORM INITIALIZATION OF IVIS (NATS) SYSTEM AND REGISTRATION OF ALL IVIS (NATS) IGNI-
TION KEY IDS
Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to SEC-
51, "ECM : Work Procedure".
>> GO TO 2.
2.PERFORM VIN REGISTRATION
Perform VIN registration. Refer to EC-145, "
Work Procedure".
>> GO TO 3.
3.PERFORM ACCELERATOR PEDAL RE LEASED POSITION LEARNING
Perform accelerator pedal released position learning. Refer to EC-146, "
Work Procedure".
>> GO TO 4.
4.PERFORM THROTTLE VALVE CL OSED POSITION LEARNING
Perform throttle valve closed position learning. Refer to EC-147, "
Work Procedure".
>> GO TO 5.
5.PERFORM IDLE AIR VOLUME LEARNING
Perform idle air volume learning. Refer to EC-148, "
Work Procedure".
>> END
Revision: 2010 May2011 QX56

EM-66
< REMOVAL AND INSTALLATION >
TIMING CHAIN
NOTE:
 The above figure shows the relationship between the matching mark on each timing chain and that on the
corresponding sprocket, with the components installed.
 Parts with an identification mark (R or L) should be installed on the corresponding bank according to the
mark.
- Intake camshaft sprocket, exhaust camshaft sprocket
- Tension guide
- Slack guide
 To install timing chain and related parts, start with those on bank 2. The procedure for installing parts on
bank 1 is omitted because it is the same as that for installation on bank 2.
1. High pressure fuel pump camshaft 2. Intake camshaft sprocket (bank 2) 3. Exhaust camshaft sprocket (bank 2)
4. Timing chain (bank 2) 5. Slack guide (bank 2) 6. Chain oil jet (bank 2)
7. Timing chain tensioner (bank 2) 8. Crankshaft sprocket (bank 2 side) 9. Crankshaft sprocket (bank 1 side)
10. Chain oil jet (bank 1) 11. Tension guide (bank 1) 12. Timing chain (bank 1)
13. Exhaust camshaft sprocket (bank 1) 14. Intake camshaft sprocket (bank 1) 15. Timing chain tensioner (bank 1)
16. Slack guide (bank 1) 17. Tension guide (bank 2) 18. Dowel pin
A: Matching mark (copper link) B: Matching mark (punched) C: Matching mark (outer groove)
D: Matching mark (white link) E. Matching mark (notched) F. Matching mark (yellow link)
G. Crankshaft key
JPBIA3482ZZ
Revision: 2010 May2011 QX56

TIMING CHAINEM-67
< REMOVAL AND INSTALLATION >
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1. Check that crankshaft key (1) and dowel pin (A) of each cam-
shaft are located as shown in the figure.
NOTE:
Though camshaft does not stop at the position as shown in the
figure, for the placement of cam nose, it is generally accepted
camshaft is placed for the same direction of the figure.
2. Install camshaft sprockets (INT and EXH).  Install onto correct side by checking with identification mark(A) on surface.
Exhaust side: Secure the hexagonal portion of exhaust camshaft using a wrench to tighten mounting bolt. Refer toEM-74, "
Exploded View".
Intake side:
 Secure the hexagonal portion (located in between journal No.1and journal No. 2) of drive shaft (A) using a wrench (B) to
tighten mounting bolt. Refer to EM-74, "
Exploded View".
NOTE:
The figure shows an example of bank 2.
3. Install high pressure fuel pump camshaft.
4. Install timing chains as per the following:
a. Install crankshaft sprockets for both banks.  Install each crankshaft sprocket so that its flange side (thelarger diameter side without teeth) (A) faces in the direction
shown in the figure.
NOTE:
The same parts are used but facing directions are different.Camshaft dowel pin
: At cylinder head upper face side in each bank
Crankshaft key : Straight up
JPBIA2109ZZ
JPBIA2110ZZ
: Engine front
JPBIA2302ZZ
1 : Crankshaft sprocket (bank 1 side)
2 : Crankshaft sprocket (bank 2 side)
JPBIA3542ZZ
Revision: 2010 May2011 QX56

EM-106
< UNIT DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
CYLINDER BLOCK
Exploded ViewINFOID:0000000006289582
1. Knock sensor 2. Cylinder block 3. Side bolt
4. Thrust bearing 5. Main bearing (upper) 6. Crankshaft key
7. Crankshaft 8. Main bearing (lower) 9. Main bearing cap
JPBIA4511GB
Revision: 2010 May2011 QX56

EXL-22
< SYSTEM DESCRIPTION >[XENON TYPE]
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Fu
nction (BCM - COMMON ITEM)INFOID:0000000006368037
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
×: Applicable item
*: This item is indicated, but not used.
FREEZE FRAME DATA (FFD)
The BCM records the following vehicle condition at the time a particular DTC is detected, and displays on
CONSULT-III.
Diagnosis mode Function Description
Work Support Changes the setting for each system function.
Self Diagnostic Result Displays the diagnosis results judged by BCM. Refer to BCS-57, "
DTCIndex".
CAN Diag Support Monitor Monitors the reception status of CAN communication viewed from BCM. Refer to CONSULT-III opera-
tion manual.
Data Monitor The BCM input/output signals are displayed.
Active Test The signals used to activate ea ch device are forcibly supplied from BCM.
Ecu Identification The BCM part number is displayed.
Configuration  Read and save the vehicle specification.
 Write the vehicle specification when replacing BCM.
System Sub system selection item Diagnosis mode
Work Support Data Monitor Active Test
Door lock DOOR LOCK ×××
Rear window defogger REAR DEFOGGER ××
Warning chime BUZZER ××
Interior room lamp timer INT LAMP ×××
Exterior lamp HEAD LAMP ×××
Wiper and washer WIPER ×××
Turn signal and hazard warning lamps FLASHER ×××
— AIR CONDITONER* ××
 Intelligent Key system
 Engine start system INTELLIGENT KEY
×××
Combination switch COMB SW ×
Body control system BCM ×
IVIS IMMU ×××
Interior room lamp battery saver BATTERY SAVER ×××
Back door TRUNK ×
Vehicle security system THEFT ALM ×××
RAP system RETAINED PWR ×
Signal buffer system SIGNAL BUFFER ××
Revision: 2010 May2011 QX56

EXL-26
< SYSTEM DESCRIPTION >[XENON TYPE]
DIAGNOSIS SYSTEM (BCM)
*: Factory setting
DATA MONITOR
ACTIVE TEST
Service item Setting item Setting
HAZARD ANSWER
BACK Lock Only With locking only
Sets the hazard warning lamp answer back function
when the door is lock/unlock with the request switch or
the key fob.
Unlk Only With unlocking only
Lock&Unlk
*With locking/unlocking
Off Without the function
Monitor item [Unit] Description
REQ SW-DR
[On/Off] The switch status input from the request switch (driver side)
REQ SW-AS
[On/Off] The switch status input from the request switch (passenger side)
PUSH SW
[On/Off] The switch status input from the push-button ignition switch
TURN SIGNAL R
[On/Off] Each switch status that BCM detects from the combination switch reading function
TURN SIGNAL L
[On/Off]
HAZARD SW
[On/Off] The switch status input from the hazard switch
RKE-LOCK
[On/Off] Lock signal status received from the remote keyless entry receiver
RKE-UNLOCK
[On/Off] Unlock signal status received from the remote keyless entry receiver
RKE-PANIC
[On/Off] Panic alarm signal status received from the remote keyless entry receiver
Test item Operation Description
FLASHER RH Outputs the voltage to blink the right side turn signal lamps.
LH Outputs the voltage to blink the left side turn signal lamps.
Off Stops the voltage to turn the turn signal lamps OFF.
Revision: 2010 May2011 QX56

GI-1
GENERAL INFORMATION
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CONTENTS
GENERAL INFORMATION
HOW TO USE THIS MANU AL ......................3
HOW TO USE THIS MANUAL ....................... .....3
Description .......................................................... ......3
Terms ........................................................................3
Units ..........................................................................3
Contents ....................................................................3
Relation between Illustrations and Descriptions .......4
Components ..............................................................4
HOW TO FOLLOW TROUBLE DIAGNOSES .....6
Description ................................................................6
How to Follow Test Groups in Trouble Diagnosis ......6
Key to Symbols Signifying Measurements or Pro-
cedures ............................................................... ......
7
HOW TO READ WIRING DIAGRAMS ................9
Connector Symbols ............................................. ......9
Sample/Wiring Diagram -Example- .........................10
Connector Information .............................................12
ABBREVIATIONS .......................................... ....14
Abbreviation List .................................................. ....14
TIGHTENING TORQUE OF STANDARD
BOLTS ................................................................
19
Description .......................................................... ....19
Tightening Torque Table (New Standard Includ-
ed) ...........................................................................
19
RECOMMENDED CHEMICAL PRODUCTS
AND SEALANTS ................................................
22
Recommended Chemical Products and Sealants ....22
VEHICLE INFORMATION ............................23
IDENTIFICATION INFORMATION ................. ....23
Model Variation ................................................... ....23
Information About Identification or Model Code ......23
Dimensions .............................................................25
Wheels & Tires ........................................................25
PRECAUTION ..............................................26
PRECAUTIONS .................................................26
Description ........................................................... ....26
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
26
Precautions For Xenon Headlamp Service .............26
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect ...................................
27
Precaution for Procedure without Cowl Top Cover ....27
General Precautions ................................................27
Three Way Catalyst .................................................29
Multiport Fuel Injection System or Engine Control
System .....................................................................
29
Hoses ......................................................................29
Engine Oils ..............................................................30
Air Conditioning .......................................................31
Fuel ..........................................................................31
LIFTING POINT .................................................32
Pantograph Jack ......................................................32
Garage Jack and Safety Stand ................................32
2-Pole Lift ................................................................33
TOW TRUCK TOWING .....................................34
Tow Truck Towing ...................................................34
Vehicle Recovery (Freeing a Stuck Vehicle) ...........34
BASIC INSPECTION ...................................36
SERVICE INFORMATION FOR ELECTRICAL
INCIDENT ..........................................................
36
Work Flow ............................................................ ....36
Control Units and Electrical Parts ............................36
How to Check Terminal ...........................................37
Intermittent Incident .................................................40
Circuit Inspection .....................................................43
CONSULT-III/GST CHECKING SYSTEM .........48
Description ...............................................................48
CONSULT-III Function and System Application*1 ....48
Revision: 2010 May2011 QX56