2008 NISSAN LATIO engine overheat

DTC P1217 ENGINE OVER TEMPERATURE
EC-415
< SERVICE INFORMATION >
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8. Make sure that cooling fans operates at low speed.
If NG, go to EC-417, "
Diagnosis Procedure".
If OK, go to the following step.
9. Turn ignition switch OFF.
10. Turn air conditioner switch and blower fan switch OFF.
11. Disconnect engine coolant temperature sensor harness connec-
tor.
12. Connect 150Ω resistor to engine coolant temperature sensor
harness connector.
13. Restart engine and make sure that cooling fan operates at
higher speed than low speed.
CAUTION:
Be careful not to overheat engine.
14. If NG, go to EC-417, "
Diagnosis Procedure".
Models without A/C
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-417,
"Diagnosis Procedure".
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to EC-417,
"Diagnosis Procedure".
3. Perform IPDM E/R auto active test and check cooling fan motor
operation, refer to PG-19, "
Auto Active Test".
4. Make sure that cooling fan operate at low speed.
If NG, go to EC-417, "
Diagnosis Procedure".
5. Turn ignition switch OFF.
6. Disconnect engine coolant temperature sensor harness connector.
7. Connect 150Ω resistor to engine coolant temperature sensor harness connector.
8. Start engine and make that cooling fan operates. Be careful not
to overheat engine.
9. If NG, go to EC-417, "
Diagnosis Procedure".
MBIB0651E
SEF023R
SEF621W
SEF023R

DTC P1217 ENGINE OVER TEMPERATURE
EC-419
< SERVICE INFORMATION >
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5. Restart engine and make sure that cooling fan operate at higher
speed than low speed.
OK or NG
OK >> GO TO 6.
NG >> Check cooling fan high speed control circuit. (Go to
"PROCEDURE A".)
6.CHECK COOLING SYSTEM FOR LEAK
Refer to CO-8
.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following for leak.
•Hose
• Radiator
• Water pump (Refer to CO-16
.)
>> Repair or replace.
8.CHECK RADIATOR CAP
Refer to CO-11
.
OK or NG
OK >> GO TO 9.
NG >> Replace radiator cap.
9.CHECK COMPONENT PARTS
Check the following;.
• Thermostat. (Refer to CO-16
.)
• Water control valve. (Refer to CO-19
.)
• Engine coolant temperature sensor. (Refer to EC-191, "
Component Inspection".)
OK or NG
OK >> GO TO 10.
NG >> Replace malfunctioning component.
10.CHECK MAIN 13 CAUSES
If the cause cannot be isolated, go to EC-424, "
Main 13 Causes of Overheating".
>>INSPECTION END
PROCEDURE A
1.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E44.
SEF023R

EC-422
< SERVICE INFORMATION >
DTC P1217 ENGINE OVER TEMPERATURE
2. Disconnect engine coolant temperature sensor harness connector.
3. Connect 150Ω resistor to engine coolant temperature sensor harness connector.
4. Restart engine and make sure that cooling fan operates at
higher speed than low speed.
OK or NG
OK >> GO TO 6.
NG >> Check cooling fan high speed control circuit. (Go to
"PROCEDURE A")
6.CHECK COOLING SYSTEM FOR LEAK
Refer to CO-8
.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following for leak.
•Hose
• Radiator
• Water pump (Refer to CO-16
.)
>> Repair or replace.
8.CHECK RADIATOR CAP
Refer to CO-11
.
OK or NG
OK >> GO TO 9.
NG >> Replace radiator cap.
9.CHECK THERMOSTAT
Refer to CO-17
.
OK or NG
OK >> GO TO 10.
NG >> Replace thermostat.
10.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-191, "
Component Inspection".
OK or NG
OK >> GO TO 11.
NG >> Replace engine coolant temperature sensor.
11 .CHECK MAIN 13 CAUSES
If the cause cannot be isolated, go to EC-424, "
Main 13 Causes of Overheating".
>>INSPECTION END
PROCEDURE B
1.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E44.
SEF023R

EC-424
< SERVICE INFORMATION >
DTC P1217 ENGINE OVER TEMPERATURE
OK >> GO TO 6.
NG >> Replace cooling fan motor.
6.CHECK INTERMITTENT INCIDENT
Perform EC-136
.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-26, "Removal and Installation of IPDM E/R".
NG >> Repair or replace harness or connector.
Main 13 Causes of OverheatingINFOID:0000000001702935
*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-5
.
Component InspectionINFOID:0000000001702936
COOLING FAN MOTOR
Model with A/C
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 mixture See MA-11, "
Anti-freeze
Coolant Mixture Ratio".
3 • Coolant level • Visual Coolant up to MAX level in
reservoir tank and radiator
filler neckSee CO-8, "
Inspection".
4 • Radiator cap • Pressure tester 59 - 98 kPa
(0.6 - 1.0 kg/cm
2, 9 - 14
psi) (Limit)See CO-13, "
Checking
Radiator Cap".
ON*
25 • Coolant leaks • Visual No leaks See CO-8, "Inspection".
ON*
26 • Thermostat • Touch the upper and
lower radiator hosesBoth hoses should be hot See CO-17, and CO-11
ON*17 • Cooling fan • CONSULT-II Operating See trouble diagnosis for
DTC P1217 (EC-417, "
Di-
agnosis Procedure").
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 idlingSee CO-8, "
Changing En-
gine Coolant".
OFF*
410 • Coolant return from res-
ervoir tank to radiator• Visual Should be initial level in
reservoir tankSee CO-8, "Inspection".
OFF 11 • Water control valve• Remove and inspect
the valveWithin the specified valueSee CO-19, "
Removal
and Installation"
OFF 12 • Cylinder head • Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)See EM-62.
13 • Cylinder block and pis-
tons• Visual No scuffing on cylinder
walls or pistonSee EM-76
.

ENGINE MAINTENANCE
MA-13
< SERVICE INFORMATION >
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2. Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing.
Refer to CO-11
.
3. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to "FLUSHING COOLING SYSTEM" .
REFILLING ENGINE COOLANT
1. Install reservoir tank if removed. Refer to CO-11 .
2. Install radiator drain plug.
•If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-76
.
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring. Refer to CO-11, "
Component" .
3. Make sure that each hose clamp has been firmly tightened.
4. Remove air duct assembly. Refer to EM-16
.
5. Disconnect heater hose (1) at position ( ) as shown.
• Front
• Enhance heater hose as high as possible.
6. Fill radiator and reservoir tank to specified level.
•Pour engine coolant through engine coolant filler neck
slowly of less than 2 (2 1/8 US qt, 1-3/4 lmp qt) a minute
to allow air in system to escape.
•Use NISSAN Genuine Engine Coolant or equivalent mixed
with water (distilled or demineralized). Fill cooling system
to specification. Refer to MA-10
.
• When engine coolant overflows disconnected heater hose,
connect heater hose, and continue filling the engine coolant, if
heater hose is disconnected.
7. Install radiator cap.
8. Install air duct assembly. Refer to EM-16
.
9. Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3,000
rpm.
• Make sure 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 the engine.
10. Stop 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.
11. Refill reservoir tank to “MAX” level line with engine coolant.
12. Repeat steps 6 through 10 two or more times with radiator cap installed until engine coolant level no
longer drops.
13. Check cooling system for leaks with engine running.
14. Warm up 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.
15. Repeat step 14 three times.
16. If sound is heard, bleed air from cooling system by repeating steps 6 through 10 until engine coolant level
no longer drops.
FLUSHING COOLING SYSTEM
PBIC3802E
SMA182B

MTC-50
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
High-pressure Side is Too High and Low-pressure Side is Too Low
High-pressure Side is Too Low and Low-pressure Side is Too High
Both High- and Low-pressure Sides are Too Low
Gauge indication Refrigerant cycle Probable cause Corrective action
Both high- and low-pressure
sides are too high.Pressure is reduced soon af-
ter water is splashed on con-
denser.Excessive refrigerant charge in refrig-
eration cycle.Reduce refrigerant until
specified pressure is ob-
tained.
Air suction by cooling fan is in-
sufficient.Insufficient condenser cooling perfor-
mance.
↓
1. Condenser fins are clogged.
2. Improper fan rotation of cooling
fan.• Clean condenser.
• Check and repair cooling
fan if necessary.
• Low-pressure pipe is not
cold.
• When compressor is
stopped high-pressure val-
ue quickly drops by approx-
imately 196 kPa (1.96 bar, 2
kg/cm
2 , 28 psi). It then de-
creases gradually thereaf-
ter.Poor heat exchange in condenser
(After compressor operation stops,
high-pressure decreases too slowly.).
↓
Air in refrigeration cycle.Evacuate repeatedly and
recharge system.
Engine tends to overheat. Engine cooling systems malfunction.Check and repair each en-
gine cooling system.
• An area of the low-pressure
pipe is colder than areas
near the evaporator outlet.
• Plates are sometimes cov-
ered with frost.• Excessive liquid refrigerant on low-
pressure side.
• Excessive refrigerant discharge
flow.
• Expansion valve is open a little
compared with the specification.
↓
Improper expansion valve adjust-
ment.Replace expansion valve.
AC359A
Gauge indication Refrigerant cycle Probable cause Corrective action
High-pressure side is too high
and low-pressure side is too low.
Upper side of condenser and
high-pressure side are hot,
however, liquid tank is not so
hot.High-pressure tube or parts located
between compressor and condenser
are clogged or crushed.• Check and repair or re-
place malfunctioning
parts.
• Check oil for contami-
nation.
AC360A
Gauge indication Refrigerant cycle Probable cause Corrective action
High-pressure side is too low
and low-pressure side is too
high.High- and low-pressure sides
become equal soon after com-
pressor operation stops.Compressor pressure operation
is improper.
↓
Damaged inside compressor
packings.Replace compressor.
No temperature difference be-
tween high- and low-pressure
sides.Compressor pressure operation
is improper.
↓
Damaged inside compressor
packings.Replace compressor.
AC356A