check oil INFINITI QX56 2011 Factory Workshop Manual

EC-5
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P0300, P0301, P0302, P0303, P0304, P0305,
P0306, P0307, P0308 MISFIRE ..................... ..
291
DTC Logic ........................................................... ..291
Diagnosis Procedure .............................................292
P0327, P0328, P0332, P0333 KS ....................297
DTC Logic ........................................................... ..297
Diagnosis Procedure .............................................297
Component Inspection (Knock Sensor) ................298
P0335 CKP SENSOR .......................................299
DTC Logic ........................................................... ..299
Diagnosis Procedure .............................................299
Component Inspection (Crankshaft Position Sen-
sor) ........................................................................
301
P0340, P0345 CMP SENSOR ..........................303
DTC Logic ........................................................... ..303
Diagnosis Procedure .............................................304
Component Inspection (Camshaft Position Sen-
sor) ........................................................................
306
P0420, P0430 THREE WAY CATALYST
FUNCTION .......................................................
307
DTC Logic ........................................................... ..307
Component Function Check ..................................308
Diagnosis Procedure .............................................309
P0441 EVAP CONTROL SYSTEM ..................312
DTC Logic ........................................................... ..312
Component Function Check ..................................313
Diagnosis Procedure .............................................314
P0443 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE .......................
317
DTC Logic ........................................................... ..317
Diagnosis Procedure .............................................318
Component Inspection (EVAP Canister Purge
Volume Control Solenoid Valve) ...........................
320
P0444, P0445 EVAP CANISTER PURGE
VOLUME CONTROL SOLENOID VALVE .......
322
DTC Logic ........................................................... ..322
Diagnosis Procedure .............................................322
Component Inspection (EVAP Canister Purge
Volume Control Solenoid Valve) ...........................
323
P0447 EVAP CANISTER VENT CONTROL
VALVE ..............................................................
325
DTC Logic ........................................................... ..325
Diagnosis Procedure .............................................325
Component Inspection (EVAP Canister Vent Con-
trol Valve) ............................................................ ..
327
P0448 EVAP CANISTER VENT CONTROL
VALVE ..............................................................
329
DTC Logic ........................................................... ..329
Diagnosis Procedure .............................................329
Component Inspection (EVAP Canister Vent Con-
trol Valve) ............................................................ ..
331
P0451 EVAP CONTROL SYSTEM PRES-
SURE SENSOR ...............................................
333
DTC Logic ............................................................ ..333
Diagnosis Procedure .............................................333
Component Inspection (EVAP Control System
Pressure Sensor) ................................................. ..
335
P0452 EVAP CONTROL SYSTEM PRES-
SURE SENSOR ...............................................
336
DTC Logic ..............................................................336
Diagnosis Procedure .............................................337
Component Inspection (EVAP Control System
Pressure Sensor) ................................................. ..
339
P0453 EVAP CONTROL SYSTEM PRES-
SURE SENSOR ...............................................
341
DTC Logic ..............................................................341
Diagnosis Procedure .............................................342
Component Inspection (EVAP Control System
Pressure Sensor) ................................................. ..
345
P0456 EVAP CONTROL SYSTEM .................346
DTC Logic ..............................................................346
Diagnosis Procedure .............................................347
Component Inspection (Fuel Filler Cap) ................350
P0460 FUEL LEVEL SENSOR .......................352
DTC Logic ............................................................ ..352
Diagnosis Procedure .............................................352
P0461 FUEL LEVEL SENSOR .......................353
DTC Logic ..............................................................353
Component Function Check ..................................353
Diagnosis Procedure .............................................354
P0462, P0463 FUEL LEVEL SENSOR ...........355
DTC Logic ..............................................................355
Diagnosis Procedure .............................................355
P0500 VSS ......................................................356
Description ........................................................... ..356
DTC Logic ..............................................................356
Component Function Check ..................................357
Diagnosis Procedure .............................................357
P0506 ISC SYSTEM ........................................358
Description .............................................................358
DTC Logic ..............................................................358
Diagnosis Procedure .............................................358
P0507 ISC SYSTEM ........................................360
Description .............................................................360
DTC Logic ..............................................................360
Diagnosis Procedure .............................................360
P050E COLD START CONTROL ...................362
Description .............................................................362
DTC Logic ..............................................................362
Diagnosis Procedure .............................................362
P0524 ENGINE OIL PRESSURE ....................364
Revision: 2010 May2011 QX56

EC-8
P2A00, P2A03 A/F SENSOR 1 .......................487
DTC Logic ............................................................ ..487
Diagnosis Procedure .............................................487
ASCD BRAKE SWITCH ................................. .490
Component Function Check ................................ ..490
Diagnosis Procedure .............................................490
Component Inspection (ASCD Brake Switch) .......491
ASCD INDICATOR ..........................................492
Component Function Check ................................ ..492
Diagnosis Procedure .............................................492
ELECTRICAL LOAD SIGNAL .........................493
Description ........................................................... ..493
Component Function Check ..................................493
Diagnosis Procedure .............................................493
ELECTRICALLY-CONTROLLED COOLING
FAN COUPLING ..............................................
495
Component Function Check ................................ ..495
Diagnosis Procedure .............................................495
FUEL INJECTOR .............................................498
Component Function Check ................................ ..498
Diagnosis Procedure .............................................498
Component Inspection ...........................................499
HIGH PRESSURE FUEL PUMP ......................501
Component Function Check ................................ ..501
Diagnosis Procedure .............................................501
Component Inspection ...........................................502
ICC BRAKE SWITCH ......................................503
Component Function Check ................................ ..503
Diagnosis Procedure .............................................503
Component Inspection (ICC Brake Switch) ...........505
IGNITION SIGNAL ...........................................506
Component Function Check ................................ ..506
Diagnosis Procedure .............................................506
Component Inspection (Ignition Coil with Power
Transistor) .............................................................
509
Component Inspection (Condenser) ......................510
INFORMATION DISPLAY (ASCD) ..................511
Component Function Check ................................ ..511
Diagnosis Procedure .............................................511
LOW PRESSURE FUEL PUMP ......................512
Component Function Check ................................ ..512
Diagnosis Procedure .............................................512
Component Inspection (Low Pressure Fuel Pump)
..
513
Component Inspection (FPCM) .............................514
MALFUNCTION INDICATOR LAMP ...............515
Component Function Check ................................ ..515
Diagnosis Procedure .............................................515
ON BOARD REFUELING VAPOR RECOV-
ERY (ORVR) .....................................................
516
Component Function Check ................................ .516
Diagnosis Procedure .............................................516
Component Inspection (EVAP Vapor Cut Valve) . .518
REFRIGERANT PRESSURE SENSOR ......... ..520
Component Function Check ................................ .520
Diagnosis Procedure .............................................520
SNOW MODE SWITCH ....................................522
Description ........................................................... .522
Component Function Check .................................522
Diagnosis Procedure .............................................522
Component Inspection ..........................................523
SYMPTOM DIAGNOSIS ...........................524
ENGINE CONTROL SYSTEM SYMPTOMS .. ..524
Symptom Table .................................................... .524
NORMAL OPERATING CONDITION ...............529
Description ........................................................... .529
PERIODIC MAINTENANCE ......................530
IDLE SPEED .......................... ...........................530
Inspection ............................................................. .530
IGNITION TIMING .............................................531
Inspection ............................................................. .531
EVAP LEAK CHECK ........................................532
Inspection ............................................................. .532
POSITIVE CRANKCASE VENTILATION .........534
Inspection ............................................................. .534
REMOVAL AND INSTALLATION .............535
ECM ................................................................ ..535
Removal and Installation ...................................... .535
VVEL CONTROL MODULE .............................536
Removal and Installation ...................................... .536
FUEL PUMP CONTROL MODULE (FPCM) ....537
Removal and Installation ...................................... .537
SERVICE DATA AND SPECIFICATIONS
(SDS) ........ .................................................
538
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ..
538
Idle Speed ............................................................ .538
Ignition Timing .......................................................538
Calculated Load Value ..........................................538
Mass Air Flow Sensor ...........................................538
Revision: 2010 May2011 QX56

PRECAUTIONSEC-11
< PRECAUTION > [VK56VD]
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When connecting ECM harness connector (A), fasten (B) it
securely with a lever as far as it will go as shown in the figure.
-ECM (1)
- Loosen (C)
 When connecting or disconnect ing pin connectors into or
from ECM, never damage pin terminals (bends or break).
Check that there are not any bends or breaks on ECM pin ter-
minal, when connect ing pin connectors.
 Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge) volt-
age to develop in coil and cond enser, thus resulting in dam-
age to ICs.
 Keep engine control system harness at least 10 cm (4 in) away
from adjacent harness, to prevent engine control system mal-
functions due to receiving externa l noise, degraded operation
of ICs, etc.
 Keep engine control system parts and harness dry.
 Before replacing ECM, perform ECM Terminals and Reference
Value inspection and check that ECM functions properly.
Refer to EC-72, "
Reference Value".
 Handle mass air flow sensor carefully to avoid damage.
 Never clean mass air flow sensor with any type of detergent.
 Never disassemble electric th rottle control actuator.
 Even a slight leakage in the air intake system can cause seri-
ous incidents.
 Never shock or jar the camshaf t position sensor, crankshaft
position sensor.
 After performing each TROUBL E DIAGNOSIS, perform DTC
Confirmation Procedure or Component Function Check.
The DTC should not be displ ayed in the DTC Confirmation
Procedure if the repair is completed. The Component Func-
tion Check should be a good resu lt if the repair is completed.
JMBIA0029ZZ
PBIB0090E
MEF040D
SEF217U
Revision: 2010 May2011 QX56

EC-70
< SYSTEM DESCRIPTION >[VK56VD]
DIAGNOSIS SYSTEM (ECM)
*: The item is indicated, but not used.
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ACTIVE TEST MODE
Test Item
ECM TEMP 1
°C or °F  Displays a temperature calculated from a signal of
ECM temperature sensor 1.
ECM TEMP 2 °C or °F  Displays a temperature calculated from a signal of
ECM temperature sensor 2.
FUEL PUMP DUTY %  The control condition of the fuel pump control mod-
ule (FPCM) (determined by ECM according to the
input signals) is indicated.
Monitored item Unit Description Remarks
TEST ITEM CONDITION JUDGMENT CHECK ITEM (REMEDY)
VENT CON-
TROL/V  Ignition switch: ON (Engine
stopped)
 Turn solenoid valve ON and OFF with the CONSULT-III and listen
to operating sound. Solenoid valve makes an operating
sound.
 Harness and connectors
 Solenoid valve
ENG COOLANT
TEMP  Engine: Return to the original
non-standard condition
 Change the engine coolant tem- perature using CONSULT-III. If malfunctioning symptom disap-
pears, see CHECK ITEM.  Harness and connectors
 Engine coolant temperature sen-
sor
 Fuel injector
FUEL INJEC-
TION  Engine: Return to the original
non-standard condition
 Change the amount of fuel injec- tion using CONSULT-III. If malfunctioning symptom disap-
pears, see CHECK ITEM.
 Harness and connectors
 Fuel injector
 Air fuel ratio (A/F) sensor 1
FUEL/T TEMP
SEN  Change the fuel tank temperature using CONSULT-III.
PURG VOL
CONT/V  Engine: After warming up, run en-
gine at 1,500 rpm.
 Change the EVAP canister purge
volume control solenoid valve
opening percent using CON-
SULT-III. Engine speed changes according to
the opening percent.
 Harness and connectors
 Solenoid valve
FAN DUTY CON-
TROL* Ignition switch: ON
 Change duty ratio using CON-
SULT-III. Cooling fan speed changes.  Harness and connectors
 Cooling fan motor
 Cooling fan relay
 Cooling fan control module
 IPDM E/R
ALTERNATOR
DUTY Engine: Idle
 Change duty ratio using CON-
SULT-III. Battery voltage changes.  Harness and connectors
 IPDM E/R
Alternator
POWER BAL-
ANCE  Engine: After warming up, idle the
engine.
 A/C switch OFF
 Selector lever: P or N
 Cut off each injector signal one at a time using CONSULT-III. Engine runs rough or stops.
 Harness and connectors
 Compression
 Fuel injector
 Power transistor
Spark plug
 Ignition coil
IGNITION TIM-
ING  Engine: Return to the original
non-standard condition
 Timing light: Set
 Retard the ignition timing using
CONSULT-III. If malfunctioning symptom disap-
pears, see CHECK ITEM.
 Perform Idle Air Volume Learning.
Revision: 2010 May2011 QX56

EC-154
< BASIC INSPECTION >[VK56VD]
FUEL PRESSURE
4. Connect fuel hose for fuel pressure check (1) to fuel tube
(engine side) with clamp (2) as shown in the figure.
CAUTION:
 Wipe off oil or dirt from hose insertion part using clothmoistened with gasoline.
 Apply proper amount of gasoli ne between top of the fuel
tube (3) and No.1 spool (4).
 Insert fuel hose for fuel pressure check until it touches the No.1 spool on fuel tube.
 Use NISSAN genuine hose clamp (part number: 16439
N4710 or 16439 40U00).
 When reconnecting fuel line, always use new clamps.
 Use a torque driver to tighten clamps.
 Install hose clamp to the position within 1 - 2 mm (0.04 - 0.08 in).
 Make sure that clamp screw does not contact adjacent parts.
5. Connect fuel tube adapter (C) to fuel feed hose (1) in the same manner as instructed in Step 4.
6. After connecting fuel hose for fuel pressure check, pull the hose with a force of approximately 98 N (10 kg,
22 lb) to confirm fuel tube does not come off.
7. Reinstall the part removed at Step 3. NOTE:
Install the part to allow smooth engine starts.
8. Turn ignition switch ON and check for fuel leakage.
9. Start engine and check for fuel leakage.
10. Read the indication of fuel pressure gauge. CAUTION:
 Do not perform fuel pressure check with system operating. Fuel pressure gauge may indicate
false readings.
 During fuel pressure check, confirm for fuel leakage from fuel connection every 3 minutes.
HIGH FUEL PRESSURE CHECK
NOTE:
Since the fuel pressure gauge kit cannot be connected, follow the method shown below to check high fuel
pressure.
WITH CONSULT-III
1. Start engine.
2. Check “FUEL PRES SEN V” in “DATA MONITOR” mode with CONSULT-III.
5 : No.2 spool
Tightening torque : 1.0 - 1.5 N·m (0.1 - 0.15 kg-m, 9 - 13 in-
lb)
A : Fuel pressure gauge
B : Fuel hose for fuel pressure check
PBIB2983E
JSBIA0491ZZ
At idling: Approximately 450 kPa (4.5 bar, 4.6 kg/cm2,
65 psi)
Revision: 2010 May2011 QX56

EC-164
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
NOTE:
Check “A/F ALPHA-B1” and “A/F ALPHA-B2” for approxim
ately 1 minute because they may fluctuate. It is
NG if the indication is out of the SP value even a little.
Is the measurement value within the SP value?
YES >> GO TO 14.
NO-1 >> Less than the SP value: GO TO 2.
NO-2 >> More than the SP value: GO TO 3.
2.CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and check that the indication is within the SP
value.
Is the measurement value within the SP value?
YES >> GO TO 4.
NO >> More than the SP value: GO TO 16.
3.CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and check that the indication is within the SP
value.
Is the measurement value within the SP value?
YES >> GO TO 6.
NO-1 >> More than the SP value: GO TO 6.
NO-2 >> Less than the SP value: GO TO 22.
4.CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Stop the engine.
2. Disconnect PCV hose, and then plug it.
3. Start engine.
4. Select “A/F ALPHA-B1” and “A/F ALPHA-B2” in “ SPEC” of “DATA MONITOR” mode, and check that each
indication is within the SP value.
Is the measurement value within the SP value?
YES >> GO TO 5.
NO >> GO TO 6.
5.CHANGE ENGINE OIL
1. Stop the engine.
2. Change engine oil. NOTE:
This symptom may occur when a large amount of gasoline is mixed with engine oil because of driving
conditions (such as when engine oil temperature does not rise enough since a journey distance is too
short during winter). The symptom will not be detec ted after changing engine oil or changing driving con-
ditions.
>> INSPECTION END
6.PERFORM POWER BALANCE TEST
1. Perform “POWER BALANCE” in “ACTIVE TEST” mode.
2. Check that each cylinder produces a momentary engine speed drop.
Is the inspection result normal?
YES >> GO TO 9.
NO >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following below.
 Ignition coil and its circuit (Refer to EC-506, "
Component Function Check".)
 Fuel injector and its circuit (Refer to EC-498, "
Component Function Check".)
 Intake air leakage
 Low compression pressure (Refer to EM-16, "
Inspection".)
Is the inspection result normal?
Revision: 2010 May2011 QX56

EC-166
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
1. Check for the cause of large engine friction. Refer to the following.
- Engine oil level is too high
- Engine oil viscosity
- Belt tension of power steering, alternat
or, A/C compressor, etc. is excessive
- Noise from engine
- Noise from transmission, etc.
2. Check for the cause of insufficient combustion. Refer to the following.
- Valve clearance malfunction
- Intake valve timing control function malfunction
- Camshaft sprocket installation malfunction, etc.
>> Repair or replace malfunctioning part, and then GO TO 27.
16.CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.
 Crushed air ducts
 Malfunctioning seal of air cleaner element
 Uneven dirt of air cleaner element
 Improper specification of intake air system
Is the inspection result normal?
YES >> GO TO 18.
NO >> Repair or replace malfunctioning part, and then GO TO 17.
17.CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2” AND “B/FUEL SCHDL”
Select “A/F ALPHA-B1”, “A/F ALPHA-B2” and “B/FUE L SCHDL” in “SPEC” of “DATA MONITOR” mode, and
check that each indication is within the SP value.
Is the measurement value within the SP value?
YES >> INSPECTION END
NO >> “B/FUEL SCHDL” is more, “A/F ALPHA-B1” and “A /F ALPHA-B2” are less than the SP value: GO
TO 18.
18.DISCONNECT AND RECONNECT MASS AIR FLOW SENSOR HARNESS CONNECTOR
1. Stop the engine.
2. Disconnect mass air flow sensor harness connector. Check pin terminal and connector for damage and then reconnect it again.
>> GO TO 19.
19.CHECK “A/F ALPHA-B1” AND “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1” and “A/F ALPHA-B2” in “ SPEC” of “DATA MONITOR” mode, and check that each
indication is within the SP value.
Is the measurement value within the SP value?
YES >> Detect malfunctioning part of mass air flow sensor circuit and repair it. Refer to EC-201, "Diagno-
sis Procedure". Then GO TO 26.
NO >> GO TO 20.
20.CHECK “MAS A/F SE-B1”
Select “MAS A/F SE-B1” in “SPEC” of “DATA MONITOR” mode, and check that the indication is within the SP
value.
Is the measurement value within the SP value?
YES >> GO TO 21.
NO >> More than the SP value: Replace malfuncti oning mass air flow sensor, and then GO TO 26.
21.REPLACE ECM
1. Replace ECM.
2. Perform EC-143, "
Work Procedure".
Revision: 2010 May2011 QX56

TROUBLE DIAGNOSIS - SPECIFICATION VALUEEC-167
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
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>> GO TO 26.
22.CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.
 Crushed air ducts
 Malfunctioning seal in air cleaner element
 Uneven dirt in air cleaner element
 Improper specification in intake air system
Is the inspection result normal?
YES >> GO TO 24.
NO >> Repair or replace malfunctioning part, and then GO TO 23.
23.CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and check t hat the indication is within the SP
value.
Is the measurement value within the SP value?
YES >> INSPECTION END
NO >> Less than the SP value: GO TO 24.
24.CHECK “MAS A/F SE-B1”
Select “MAS A/F SE-B1” in “SPEC” of “DATA MONITOR” mode, and check that the indication is within the SP
value.
Is the measurement value within the SP value?
YES >> GO TO 25.
NO >> Less than the SP value: Replace malfunctioning mass air flow sensor, and then GO TO 27.
25.CHECK INTAKE SYSTEM
Check for the cause of air leakage after the mass air flow sensor. Refer to the following.
 Disconnection, looseness, and cracks in air duct
 Looseness of oil filler cap
 Disconnection of oil level gauge
 Open stuck, breakage, hose disconnection, or cracks in PCV valve
 Disconnection or cracks in EVAP purge hose, stuc k open EVAP canister purge volume control solenoid
valve
 Malfunctioning seal in rocker cover gasket
 Disconnection, looseness, or cracks in hoses, such as a vacuum hose, connecting to intake air system parts
 Malfunctioning seal in intake air system, etc.
>> GO TO 27.
26.CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2” AND “B/FUEL SCHDL”
Select “A/F ALPHA-B1”, “A/F ALPHA-B2” and “B/FUE L SCHDL” in “SPEC” of “DATA MONITOR” mode, and
check that each indication is within the SP value.
Is the measurement value within the SP value?
YES >> INSPECTION END
NO >> Detect malfunctioning part according to EC-524, "
Symptom Table".
27.CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and then check that the indication is within
the SP value.
Is the measurement value within the SP value?
YES >> INSPECTION END
NO >> Detect malfunctioning part according to EC-524, "
Symptom Table".
Revision: 2010 May2011 QX56

P0011, P0021 IVT CONTROLEC-177
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
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P0011, P0021 IVT CONTROL
DTC LogicINFOID:0000000006217772
DTC DETECTION LOGIC
NOTE:
If DTC P0011 or P0021 is displayed with DTC P0075
or P0081, first perform the trouble diagnosis for
DTC P0075, P0081. Refer to EC-193, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-I
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
2. Start engine and warm it up to the normal operating temperature.
3. Maintain the following conditions for at least 6 consecutive seconds. Hold the accelerator pedal as steady as possible.
4. Let engine idle for 25 seconds.
5. Check 1st trip DTC. WITH GST
Follow the procedure “With CONSULT-III” above.
Is 1st trip DTC detected?
YES >> Go to EC-178, "Diagnosis Procedure"
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-II
WITH CONSULT-III
1. Select “DATA MONITOR” mode with CONSULT-III.
2. Maintain the following conditions for at least 20 consecutive seconds.
DTC No. Trouble diagnosis
(Trouble diagnosis con- tent) Detecting condition Possible cause
P0011 INT/V TIM CONT-B1
[Intake valve timing control
performance (bank 1)]
There is a gap between angle of target
and phase-control angle degree.  Crankshaft position sensor
 Camshaft position sensor
 Intake valve timing control solenoid valve
 Accumulation of debris to the signal pick-up
portion of the camshaft
 Timing chain installation
 Foreign matter caught in the oil groove for in- take valve timing control
P0021
INT/V TIM CONT-B2
[Intake valve timing control
performance (bank 2)]
ENG SPEED Less than 2,000 rpm (A constant rotation is maintained.)
COOLAN TEMP/S More than 70
°C (158 °F)
Selector lever P or N position
ENG SPEED 1,500 - 3,175 rpm (A constant rotation is maintained.)
COOLAN TEMP/S More than 70 °C (158 °F)
Revision: 2010 May2011 QX56

EC-178
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0011, P0021 IVT CONTROL
CAUTION:
Always drive at a safe speed.
3. Check 1st trip DTC.
WITH GST
Follow the procedure “With CONSULT-III” above.
Is 1st trip DTC detected?
YES >> Go to EC-178, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006217773
1.CHECK OIL PRESSURE WARNING LAMP
1. Start engine.
2. Check that oil pressure warning lamp is not illuminated.
Is oil pressure warning lamp illuminated?
YES >> Go to LU-7, "Inspection".
NO >> GO TO 2.
2.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EC-179, "
Component Inspection (Intake Valve Timing Control Solenoid Valve)".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace malfunctioning intake valve timing control solenoid valve. Refer to EM-61, "
Exploded
View".
3.CHECK CRANKSHAFT POSITION SENSOR
Refer to EC-301, "
Component Inspection (Crankshaft Position Sensor)".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace crankshaft position sensor. Refer to EM-106, "
Exploded View".
4.CHECK CAMSHAFT POSITION SENSOR
Refer to EC-306, "
Component Inspection (Camshaft Position Sensor)".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace malfunctioning camshaft position sensor. Refer to EM-106, "
Exploded View".
5.CHECK CAMSHAFT (INTAKE)
Check the following.
Selector lever 1st or 2nd position
Driving location uphill Driving vehicle uphill
(Increased engine load will help maintain the driving
conditions required for this test.)
PBIA8559J
Revision: 2010 May2011 QX56