2007 INFINITI QX56 coolant reservoir

TROUBLE DIAGNOSIS
EC-97
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
13. Intake valve timing control position
sensor (bank 1) (view with engine
cover and intake air duct removed)14. Intake valve timing control solenoid
valve (bank 2) (view with engine cov-
er and intake air duct removed)15. Drive belt (view with engine cover
and intake air duct removed)
16. Radiator hose (view with engine cov-
er and intake air duct removed)17. Intake valve timing control solenoid
valve (bank 1) (view with engine cov-
er and intake air duct removed)
1. Knock sensor (bank 1) (view with en-
gine removed)2. Knock sensor (bank 2) (view with en-
gine removed)3. Battery current sensor
4. Power steering pressure sensor 5. Power steering fluid reservoir 6. Intake manifold
7. Engine coolant temperature sensor 8. Ignition coils (with power transistor) 9. Ignition coil (with power transistor)
10. Injector harness connectors (bank 2) 11. Injector harness connectors (bank 1)
BBIA0774E

EC-470
< SERVICE INFORMATION >
DTC P1217 ENGINE OVER TEMPERATURE
On Board Diagnosis Logic
INFOID:0000000003531991
If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
This self-diagnosis has the one trip detection logic.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant. Refer to CO-9, "
Changing Engine
Coolant". Also, replace the engine oil. Refer to LU-9, "Changing Engine Oil".
1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to
use coolant with the proper mixture ratio. Refer to MA-10, "
SAE Viscosity Number".
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function CheckINFOID:0000000003531992
Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.
WARNING:
Never remove the radiator cap and/or reservoir tank cap when the engine is hot. Serious burns could
be caused by high pressure fluid escaping from the radiator and/or reservoir tank.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up
pressure to escape. Then turn the cap all the way off.
WITH CONSULT-II
1. Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to EC-473,
"Diagnosis Procedure".
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to EC-473,
"Diagnosis Procedure".
3. Turn ignition switch ON.
COOLING FAN• Engine: After warming up, idle the
engineEngine coolant temperature: 99°C
(210°F) or lessOFF
Engine coolant temperature: 100°C
(212°F) or moreHI MONITOR ITEM CONDITION SPECIFICATION
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1217
1217Engine over tempera-
ture (Overheat)• Cooling fan does not operate properly (Over-
heat).
• Cooling fan system does not operate proper-
ly (Overheat).
• Engine coolant was not added to the system
using the proper filling method.
• Engine coolant is not within the specified
range.• Harness or connectors
(The cooling fan circuit is open or short-
ed.)
• Cooling fan
• Cooling fan (crankshaft diven)
• IPDM E/R (Cooling fan relay)
•Radiator hose
•Radiator
•Radiator cap
• Reservoir tank
• Reservoir tank cap
• Water pump
•Thermostat
For more information, refer to EC-476,
"Main 13 Causes of Overheating".
SEF621W

DTC P1217 ENGINE OVER TEMPERATURE
EC-471
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
K
L
MA
EC
N
P O
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II.
5. If the results are NG, go to EC-473, "
Diagnosis Procedure".
WITH GST
1. Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to EC-473,
"Diagnosis Procedure".
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to EC-473,
"Diagnosis Procedure".
3. Disconnect engine coolant temperature sensor harness connec-
tor.
4. Connect 150Ω resistor to engine coolant temperature sensor
harness connector.
5. Start engine and make sure that cooling fan operates.
CAUTION:
Be careful not to overheat engine.
6. If NG, go to EC-473, "
Diagnosis Procedure".
SEF646X
SEF621W
SEF882V

EC-474
< SERVICE INFORMATION >
DTC P1217 ENGINE OVER TEMPERATURE
OK (Without CONSULT-II)>>GO TO 3.
NG >> Check cooling fan (crankshaft driven). Refer to CO-16, "
Removal and Installation (Crankshaft
Driven Type)".
2.CHECK COOLING FAN MOTOR OPERATION
With CONSULT-II
1. Start engine and let it idle.
2. Select “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II.
3. Make sure that cooling fan operates.
OK or NG
OK >> GO TO 4.
NG >> Check cooling fan control circuit. (Go to "PROCEDURE
A".)
3.CHECK COOLING FAN MOTOR OPERATION
Without CONSULT-II
1. Disconnect engine coolant temperature sensor harness connector.
2. Connect 150Ω resistor to engine coolant temperature sensor harness connector.
3. Start engine and let it idle.
4. Make sure that cooling fan operates.
OK or NG
OK >> GO TO 4.
NG >> Check cooling fan control circuit. (Go to "PROCEDURE
A".)
4.CHECK COOLING SYSTEM FOR LEAK
Refer to CO-9, "
Inspection".
OK or NG
OK >> GO TO 5.
NG >> Check the following for leak.
•Hose
• Radiator
• Radiator cap
• Water pump
• Reservoir tank
5.CHECK COMPONENT PARTS
Check the following.
• RESERVOIR TANK CAP (Refer to CO-9, "
Inspection".)
• Thermostat. (Refer to CO-20
.)
• Engine coolant temperature sensor. (Refer to EC-209, "
Component Inspection".)
OK or NG
OK >> GO TO 7.
NG >> Replace malfunctioning component.
6.CHECK MAIN 13 CAUSES
If the cause cannot be isolated, go to EC-476, "
Main 13 Causes of Overheating".
SEF646X
SEF882V

EC-476
< SERVICE INFORMATION >
DTC P1217 ENGINE OVER TEMPERATURE
Main 13 Causes of Overheating
INFOID:0000000003531995
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes.
*4: After 60 minutes of cool down time.
For more information, refer to CO-6
.
Component InspectionINFOID:0000000003531996
COOLING FAN MOTOR
1. Disconnect cooling fan motor harness connector.
2. Supply cooling fan motor terminals with battery voltage and
check operation.
Cooling fan motor should operate.
If NG, replace cooling fan motor.
Engine Step Inspection item Equipment Standard Reference page
OFF 1 • Blocked radiator
• Blocked condenser
• Blocked radiator grille
• Blocked bumper• Visual No blocking —
2 • Coolant mixture • Coolant tester 50 - 50% coolant mixtureMA-10
3 • Coolant level • Visual Coolant up to MAX level in
reservoir tank and radiator
filler neckMA-12, "Changing Engine
Coolant"
4 • Reservoir tank cap • Pressure tester 95 - 125 kPa
(0.97 - 1.28 kg/cm2, 14 -
18 psi) (Limit)CO-9, "
Inspection"
ON*25 • Coolant leaks • Visual No leaksCO-9, "Inspection"
ON*26 • Thermostat • Touch the upper and
lower radiator hosesBoth hoses should be hotCO-20
ON*17 • Cooling fan • CONSULT-II Operating See trouble diagnosis for
DTC P1217 (EC-469
).
OFF 8 • Combustion gas leak • Color checker chemical
tester 4 Gas analyzerNegative —
ON*
39 • Coolant temperature
gauge• Visual Gauge less than 3/4 when
driving—
• Coolant overflow to res-
ervoir tank• Visual No overflow during driving
and idlingMA-12, "
Changing Engine
Coolant"
OFF*410 • Coolant return from res-
ervoir tank to radiator• Visual Should be initial level in
reservoir tankMA-12, "Changing Engine
Coolant"
OFF 12 • Cylinder head • Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)EM-69, "Inspection After
Disassembly"
13 • Cylinder block and pis-
tons• Visual No scuffing on cylinder
walls or pistonEM-93, "Inspection After
Disassembly"
AWBIA0529ZZ

ENGINE ASSEMBLY
EM-75
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
K
L
MA
EM
N
P O
6. Remove the engine room cover using power tools.
7. Remove the air duct and air cleaner case assembly. Refer to EM-15, "
Removal and Installation".
8. Disconnect the vacuum hose between the vehicle and engine and set it aside.
9. Remove the radiator assembly and hoses. Refer to CO-13, "
Removal and Installation".
10. Remove the drive belts. Refer to EM-15, "
Removal and Installation".
11. Remove the fan blade. Refer to CO-16, "
Removal and Installation (Crankshaft Driven Type)".
12. Disconnect the engine room harness from the fuse box and set it aside.
13. Disconnect the ECM.
14. Disconnect the engine room harness from the engine side and set it aside.
15. Disconnect the engine harness grounds.
16. Disconnect the power steering reservoir tank from the engine and move it aside.
17. Disconnect the power steering oil pump from the engine. Move it aside and secure it using suitable wire or
rope. Refer to PS-21, "
Removal and Installation".
18. Remove the A/C compressor bolts and set the compressor aside. Refer to ATC-154, "
Removal and Instal-
lation for Compressor" (ATC).
19. Disconnect the brake booster vacuum line.
20. Disconnect the EVAP line.
21. Disconnect the fuel hose at the engine side connection. Refer to EM-31, "
Removal and Installation".
22. Disconnect the heater hoses at the cowl, and install plugs to avoid leakage of engine coolant.
23. Remove the A/T oil level indicator and indicator tube upper bolts.
24. Remove the front final drive assembly (4WD only). Refer to FFD-12, "
Removal and Installation".
25. Remove the exhaust manifolds. Refer to EM-21, "
Removal and Installation".
26. Install the engine slingers into the left bank cylinder head and
right bank cylinder head.
27. Remove the A/T. Refer to AT-223, "
Removal and Installation
(2WD)" or AT-225, "Removal and Installation (4WD)".
28. Lift using a hoist and secure the engine in position.
29. Remove the engine assembly from the vehicle, avoid interfer-
ence with the vehicle body.
CAUTION:
• Before and during lifting, always check if any harnesses
are left connected.
30. Remove the parts that may restrict installation of the engine to the engine stand.
NOTE:
This procedure is described assuming that you use an engine stand mounting to the surface to which the
transmission mounts.
WBIA0795E
Engine slinger torque: 45.0 N·m (4.6 kg-m, 33 ft-lb)
WBIA0715E

GENERAL MAINTENANCE
MA-5
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
K
MA
B
MA
N
O
P
UNDER THE HOOD AND VEHICLE
The maintenance items listed here should be checked periodically (e.g. each time you check the engine oil or refuel).
BrakesCheck that the brake does not pull the vehicle to one side when applied. —
Brake pedal and
boosterCheck the pedal for smooth operation and make sure it has the proper distance
under it when depressed fully. Check the brake booster function. Keep the floor
mats away from the pedal.BR-5, "
Inspection and
Adjustment", BR-15,
"On-Vehicle Service"
Parking brakeCheck that the parking brake control has the proper travel and make sure that
the vehicle is held securely on a fairly steep hill when only the parking brake is
applied.PB-4
Automatic transmis-
sion “Park” mecha-
nismOn a fairly steep hill check that the vehicle is held securely with the selector lever
in the P position without applying the brakes. — ItemReference page
ItemReference page
Windshield washer
fluidCheck that there is adequate fluid in the tank.
—
Engine coolant levelCheck the coolant level when the engine is cold. —
Radiator and hosesCheck the front of the radiator and clean off any dirt, insects, leaves, etc., that
may have accumulated. Make sure the hoses have no cracks, deformation, de-
terioration or loose connections.—
Brake fluid levelMake sure that the brake fluid level is between the “MAX” and “MIN” lines on the
reservoirsMA-27
BatteryCheck the fluid level in each cell. It should be between the “MAX” and “MIN” lines.
Vehicles operated in high temperatures or under severe conditions require fre-
quent checks of the battery fluid level.—
Engine drive beltMake sure that no belt is frayed, worn, cracked or oily.MA-12
Engine oil levelCheck the level on the dipstick after parking the vehicle on a level spot and turn-
ing off the engine.—
Power steering fluid
level and linesCheck the level on the reservoir with the engine off. Check the lines for improper
attachment, leaks, cracks, etc.MA-28
Automatic transmis-
sion fluid levelCheck the level on the dipstick after putting the selector lever in “P” with the en-
gine idling.MA-21
Exhaust systemMake sure there are no loose supports, cracks or holes. If the sound of the ex-
haust seems unusual or there is a smell of exhaust fumes, immediately locate
the trouble and correct it.MA-21
UnderbodyThe underbody is frequently exposed to corrosive substances such as those
used on icy roads or to control dust. It is very important to remove these sub-
stances, otherwise rust will form on the floor pan, frame, fuel lines and around the
exhaust system. At the end of winter, the underbody should be thoroughly
flushed with plain water, being careful to clean those areas where mud and dirt
can easily accumulate.—
Fluid leaksCheck under the vehicle for fuel, oil, water or other fluid leaks after the vehicle
has been parked for a while. Water dripping from the air conditioner after use is
normal. If you should notice any leaks or gasoline fumes are evident, check for
the cause and correct it immediately.—

MA-10
< SERVICE INFORMATION >
RECOMMENDED FLUIDS AND LUBRICANTS
RECOMMENDED FLUIDS AND LUBRICANTS
Fluids and LubricantsINFOID:0000000003533864
*1: For further details, refer to MA-10, "SAE Viscosity Number" .
*2: Using automatic transmission fluid other than Genuine NISSAN Matic J ATF will cause deterioration in driveability and automatic
transmission durability, and may damage the automatic transmission, which is not covered by the INFINITI new vehicle limited warranty.
*3: For Canada, NISSAN Automatic Transmission Fluid (ATF), DEXRON
TM III or MERCONTM or equivalent ATF may also be used.
*4: Available in mainland U.S.A. through your INFINITI dealer.
*5: For further details, see “Air conditioner specification label”.
*6: For hot climates, viscosity SAE 90 is suitable for ambient temperatures above 0° C (32° F).
*7: DEXRON
TM III, MERCONTM or equivalent may also be used. Outside the continental United States and Alaska contact a INFINITI
dealership for more information regarding suitable fluids, including recommended brand(s) of DEXRONTM III or MERCONTM Automatic
Transmission Fluid.
*8: For improved vehicle performance, INFINITI recommends the use of unleaded premium gasoline with an octane rating of at least 91
AKI (RON 96). For further details, refer to GI-4, "
Precaution for Fuel (Unleaded Premium Gasoline Required)" .
*9: See your INFINITI dealer for service for synthetic oil.
SAE Viscosity NumberINFOID:0000000003533865
GASOLINE ENGINE OIL
DescriptionCapacity (Approximate)
Recommended Fluids/Lubricants
Metric US measure Imp measure
Fuel
105.8 28 gal 23 1/4 galUnleaded gasoline with octane rating of
at least 87 AKI (RON 91) *8
Engine oil
Drain and refillWith oil filter
change6.2 6 1/2 qt 5 1/2 qt
• API Certification Mark *1
• API grade SG, Energy Conserving II or
API grade SH, SJ or SL *1
• ILSAC grade GF-II and GF-III *1 Without oil filter
change5.9 6 1/4 qt 5 1/4 qt
Dry engine (engine overhaul)
7.6 8 qt 6 3/4 qt
Cooling systemWith reservoir
at MAX level14.4 3 3/4 gal 3 1/8 galGenuine NISSAN Long Life Anti-freeze
coolant or equivalent
Automatic transmission fluid (ATF)
10.6 11 1/4 qt 9 3/8 qt Genuine NISSAN Matic J ATF *2
Rear final drive oil
1.75 3 3/4 pt 3 1/8 ptAPI GL-5 Synthetic 75W-90 Gear Oil
(Part No. 999MP-DF200P) or equivalent
*9
Transfer fluid
3.0 3 1/8 qt 2 5/8 qtGenuine NISSAN Matic D ATF (Continen-
tal U.S and Alaska) or Canada NISSAN
Automatic Transmission Fluid *7
Front final drive oil
1.6 3 3/8 pt 2 7/8 pt API GL-5 Viscosity SAE 80W-90 *6
Power steering fluid (PSF)
1.0 2 1/8 pt 1 3/4 pt Genuine NISSAN PSF or equivalent *3
Brake fluid — — —Genuine NISSAN Super Heavy Duty
Brake Fluid or equivalent,
DOT 3 (US FMVSS No. 116) *4
Brake grease — — —PBC (poly butyl cuprysil) grease or equiv-
alent
Multi-purpose grease — — — NLGI No. 2 (lithium soap base)
Windshield washer fluid
4.5 1 1/4 gal 1 galGenuine NISSAN Windshield Washer
Concentrate Cleaner & Anti-freeze or
equivalent
Air conditioning system refrigerant 1.08 ± 0.05 kg 2.38 ± 0.11 lb 2.38 ± 0.11 lb HFC-134a (R-134a) *5
Air conditioning system oil
290 m9.8 fl oz 10.2 fl ozNISSAN A/C System Oil Type S or equiv-
alent *5