Nissan X-Trail 32. Manual — part 303
CO-38
< SYMPTOM DIAGNOSIS >
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OVERHEATING CAUSE ANALYSIS
Except cool-
ing system
parts mal-
function
—
Overload on engine
Abusive driving
High engine rpm under no
load
Driving in low gear for ex-
tended time
Driving at extremely high
speed
Powertrain system malfunc-
tion
—
Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flow
Blocked bumper
—
—
Blocked radiator grille
Installed car brassiere
Mud contamination or paper
clogging
Blocked radiator
—
Blocked condenser
Blocked air flow
Installed large fog lamp
Symptom
Check items
ENGINE COOLANT
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PERIODIC MAINTENANCE
ENGINE COOLANT
Inspection
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LEVEL
• Check that the reservoir tank engine coolant level is within the
“MIN” to “MAX” when the engine is cool.
• Adjust the engine coolant level if necessary.
CAUTION:
Refill Genuine NISSAN Long Life Antifreeze/Coolant (blue) or
equivalent in its quality mixed with water (distilled or deminer-
alized). Refer to
MA-23, "Fluids and Lubricants"
LEAKAGE
• To check for leaks, apply pressure to the cooling system with the
radiator cap tester (commercial service tool) (A) and the radiator
cap tester adapter (commercial service tool) (B).
WARNING:
Never remove radiator cap when engine is hot. Serious burns
may occur from high-pressure engine coolant escaping from
engine cooling system.
CAUTION:
Higher test pressure than specified may cause radiator dam-
age.
NOTE:
In a case that engine coolant decreases, replenish radiator with engine coolant.
• If anything is found, repair or replace damaged parts.
Draining
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WARNING:
• Never remove radiator cap when engine is hot. Serious burns may occur from high-pressure engine
coolant escaping from radiator.
• Wrap a thick cloth around the radiator cap. Slowly turn it a quarter of a turn to release built-up pres-
sure. Then turn it all the way.
1.
Remove engine under cover. Refer to
EXT-39, "ENGINE UNDER COVER : Exploded View"
2.
Open radiator drain plug
at the bottom of radiator, and then
remove radiator cap.
CAUTION:
Perform this step when engine is cold.
• When draining all of engine coolant in the system, open water
drain plugs on cylinder block. Refer to
.
3.
Remove reservoir tank if necessary, and drain engine coolant and clean reservoir tank before installing.
: MAX
: MIN
JPBIA0102ZZ
Testing pressure: Refer to
PBIC5121J
: Vehicle front
JPBIA6838ZZ
CO-40
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ENGINE COOLANT
• Move reservoir tank
, and then remove it numerical order as
shown in the figure.
4.
Check drained engine coolant for contaminants such as rust, corrosion or discoloration. If contaminated,
flush the engine cooling system. Refer to
.
Refilling
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CAUTION:
• Do not put additive such as waterleak preventive, since it may cause cooling waterway clogging.
• When refilling use Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalent in its quality
mixed with water (distilled or demineralized). Refer to
MA-23, "Fluids and Lubricants"
1.
Install reservoir tank if removed and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
• If water drain plugs on cylinder block are removed, close and tighten them. Refer to
.
2.
Check that each hose clamp has been firmly tightened.
3.
Fill radiator to specified level.
CAUTION:
Never adhere the engine coolant to electronic equipments
(alternator etc.).
• Pour coolant slowly of less than 2 (1-3/4 Imp qt) a
minute to allow air in system to escape.
4.
Refill reservoir tank to “MAX” level line with engine coolant.
5.
Install radiator cap.
6.
Warm up engine until opening thermostat. Standard for warming-up time is approximately 10 minutes at
3,000 rpm.
• Check thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat engine.
: Nut
: Pawl
JPBIA6839ZZ
Radiator drain plug
: Refer to
Engine coolant capacity
(With reservoir tank at “MAX” level)
Refer to
CO-55, "Periodical Maintenance Specification"
JPBIA0412ZZ
: MAX
: MIN
Reservoir tank engine coolant capacity
(At “MAX” level)
Refer to
CO-55, "Periodical Maintenance Specification"
JPBIA0102ZZ
ENGINE COOLANT
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7.
Stop the engine and cool down to less than approximately 50
°
C (122
°
F).
• Cool down using fan to reduce the time.
• If necessary, refill radiator up to filler neck with engine coolant.
CAUTION:
Never adhere the engine coolant to electronic equipments (alternator etc.).
8.
Refill reservoir tank to “MAX” level line with engine coolant.
9.
Repeat steps 5 through 8 two or more times with radiator cap installed until engine coolant level no longer
drops.
10. Check cooling system for leakage with engine running.
11. Warm up the engine, and check for sound of engine coolant flow while running engine from idle up to
3,000 rpm with heater temperature controller set at several position between “COOL” and “WARM”.
• Sound may be noticeable at heater unit.
12. Repeat step 11 three times.
13. If sound is heard, bleed air from cooling system by repeating step 5 through 8 until reservoir tank level no
longer drops.
Flushing
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1.
Install reservoir tank if removed and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
• If water drain plugs on cylinder block are removed, close and tighten them. Refer to
2.
Fill radiator and reservoir tank with water and reinstall radiator cap.
3.
Run the engine and warm it up to normal operating temperature.
4.
Rev the engine two or three times under no-load.
5.
Stop the engine and wait until it cools down.
6.
Drain water from the system. Refer to
7.
Repeat steps 1 through 6 until clear water begins to drain from radiator.
Radiator drain plug
: Refer to
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