2004 NISSAN TERRANO radiator

Overall Function Check
Use this procedure to check the overall function of the cooling fan.
During this check, a DTC might not be confirmed.
WARNING:
Never remove the radiator cap when the engine is hot. Serious
burns could be caused by high pressure fluid escaping from
the radiator.
Wrap a thick cloth around the 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 ªDiagnos-
tic Procedureº, EC-114.
2) Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to ªDiagnos-
tic Procedureº, EC-114.
3) Turn ignition switch ªONº.
4) Perform ªCOOLING FANº in ªACTIVE TESTº mode with CON- SULT-II and make sure that cooling fans operate when touch-
ing ªHIGHº or ªLOWº.
If NG, go to ªDiagnostic Procedureº, EC-114.
WITHOUT 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 ªDiagnos-
tic Procedureº, EC-114.
2) Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to ªDiagnos-
tic Procedureº, EC-114.
3) Disconnect engine coolant temperature sensor harness con- nector.
4) Connect 150W resistor to engine coolant temperature sensor
harness connector.
5) Start engine and make sure that cooling fan operates. Be careful not to overheat engine.
6) If NG, go to ªDiagnostic Procedureº, EC-114.
AEC640
SEF111X
MEC475B
DTC 0208 OVER HEATZD30DDTi
EC-111
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13 CHECK COOLING SYSTEM FOR LEAK
Apply pressure to the cooling system with a tester, and check if the pressure drops.Testing pressure: 157 kPa (1.57 bar, 1.6 kg/cm
2, 23 psi)
CAUTION:
Higher than the specified pressure may cause radiator damage.
SLC754A
Pressure should not drop.
OK or NG
OK EGO TO 15.
NG EGO TO 14.
14 DETECT MALFUNCTIONING PART
Check the following for leak.
IHose
I Radiator
I Water pump (Refer to LC section, ªWater Pumpº.)
ERepair or replace.
15 CHECK RADIATOR CAP
Apply pressure to cap with a tester and check radiator cap relief pressure.
SLC755A
Radiator cap relief pressure:
79 - 98 kPa (0.78 - 0.98 bar, 0.8 - 1.0 kg/cm2, 11 - 14 psi)
OK or NG
OK EGO TO 16.
NG EReplace radiator cap.
DTC 0208 OVER HEATZD30DDTi
Diagnostic Procedure (Cont'd)
EC-118
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18 CHECK MAIN 12 CAUSES
If the cause cannot be isolated, go to ªMAIN 12 CAUSES OF OVERHEATINGº, EC-120.EINSPECTION END
Main 12 Causes of Overheating
Engine Step Inspection item EquipmentStandardReference page
OFF 1 IBlocked radiator
I Blocked condenser
I Blocked radiator grille
I Blocked bumper I
Visual No blocking Ð
2 ICoolant mixture ICoolant tester 30 - 50% coolant mixture See ªRECOMMENDED
FLUIDS AND LUBRI-
CANTSº in MA section.
3 ICoolant level IVisual Coolant up to MAX level
in reservoir tank and
radiator filler neck See ªChanging Engine
Coolantº, ªENGINE MAIN-
TENANCEº in MA section.
4 IRadiator cap IPressure tester 78 - 98 kPa
(0.78 - 0.98 bar, 0.8 - 1.0
kg/cm
2, 11 - 14 psi)
59 - 98 kPa (0.59 - 0.98
bar, 0.6 - 1.0 kg/cm
2,
9 - 14 psi) (Limit) See ªSystem Checkº,
ªENGINE COOLING SYS-
TEMº in LC section.
ON*2 5 ICoolant leaks IVisual No leaks See ªSystem Checkº,
ªENGINE COOLING SYS-
TEMº in LC section.
ON*2 6 IThermostat ITouch the upper and
lower radiator hoses Both hoses should be hot. See ªThermostatº and
ªRadiatorº, ªENGINE
COOLING SYSTEMº in
LC section.
ON*1 7 ICooling fan IVisual Operating See ªDTC 0208 OVER
HEATº, EC-109.
OFF 8 ICombustion gas leak IColor checker chemical
tester 4 gas analyzer Negative Ð
ON*3 9 ICoolant temperature
gauge I
Visual Gauge less than 3/4
when driving Ð
I Coolant overflow to res-
ervoir tank I
Visual No overflow during driving
and idling See ªChanging Engine
Coolantº, ªENGINE MAIN-
TENANCEº in MA section.
OFF*4 10 ICoolant return from res-
ervoir tank to radiator I
Visual Should be initial level in
reservoir tank See ªENGINE MAINTE-
NANCEº in MA section.
OFF 11 ICylinder head IStraight gauge feeler
gauge 0.1 mm (0.004 in) Maxi-
mum distortion (warping) See ªInspectionº, ªCYLIN-
DER HEADº in EM sec-
tion.
12 ICylinder block and pis-
tons I
Visual No scuffing on cylinder
walls or piston See ªInspectionº, ªCYLIN-
DER BLOCKº in EM sec-
tion.
*1: Engine running at idle.
*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 ªOVERHEATING CAUSE ANALYSISº in LC section.
DTC 0208 OVER HEATZD30DDTi
Diagnostic Procedure (Cont'd)
EC-120
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Description
SYSTEM DESCRIPTION
SensorInput signal to ECM ECM functionActuator
Engine coolant temperature
sensor Engine coolant temperature
Cooling fan control Cooling fan relay
Air conditioner switch Air conditioner ªONº signal
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, air condi-
tioner ON signal.
On Board Diagnosis Logic
This diagnosis continuously monitors the engine coolant temperature.
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.
DTC Malfunction is detected when ... Check Items (Possible Cause)
P1217
0208 I
Cooling fan does not operate properly (Overheat).
I Cooling fan system does not operate properly (Over-
heat).
I Engine coolant was not added to the system using
the proper filling method. I
Harness or connectors
(The cooling fan circuit is open or shorted.)
I Cooling fan
I Radiator hose
I Radiator
I Radiator cap
I Water pump
I Thermostat
I Engine coolant temperature sensor
For more information, refer to ªMAIN 12 CAUSES OF
OVERHEATINGº, EC-448.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant following the procedure in the LC
section, ªChanging Engine Coolantº. Also, replace the 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 section, ªEngine Coolant Mixture Ratioº.
2) After refilling coolant, run engine to ensure that no water-flow noise is emitted.
DTC P1217 OVER HEATTD27Ti
EC-441
http://vnx.su/

Overall Function Check
Use this procedure to check the overall function of the cooling fan.
During this check, a DTC might not be confirmed.
WARNING:
Never remove the radiator cap when the engine is hot. Serious
burns could be caused by high pressure fluid escaping from
the radiator.
Wrap a thick cloth around the 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 ªDiagnos-
tic Procedureº, EC-444.
2) Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to ªDiagnos-
tic Procedureº, EC-444.
3) Turn ignition switch ªONº.
4) Perform ªCOOLING FANº in ªACTIVE TESTº mode with CON- SULT-II and make sure that cooling fans operate.
If NG, go to ªDiagnostic Procedureº, EC-444.
WITHOUT 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 ªDiagnos-
tic Procedureº, EC-444.
2) Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to ªDiagnos-
tic Procedureº, EC-444.
3) Start engine. Be careful not to overheat engine.
4) Set temperature control lever to full cold position.
5) Turn air conditioner switch ªONº.
6) Turn blower fan switch ªONº.
7) Run engine at idle for a few minutes with air conditioner oper- ating.
Be careful not to overheat engine.
8) Make sure that cooling fans operate at low speed.
9) Turn ignition switch ªOFFº.
10) Turn air conditioner switch and blower fan switch ªOFFº.
11) Disconnect engine coolant temperature sensor harness con- nector.
12) Connect 150W resistor to engine coolant temperature sensor
harness connector.
13) Start engine and make sure that cooling fans operate at higher speed than low speed.
Be careful not to overheat engine.
14) If NG, go to ªDiagnostic Procedureº, EC-444.
AEC640
SEF111X
SEC163BA
MEC475B
DTC P1217 OVER HEATTD27Ti
EC-442
http://vnx.su/

qc
CHECK COOLING SYSTEM FOR LEAK.
Apply pressure to the cooling system with
a tester, and check if the pressure drops.
Testing pressure:157 kPa (1.57 bar, 1.6 kg/cm
2, 23 psi)
Pressure should not drop.
CAUTION:
Higher than the specified pressure may
cause radiator damage.
OK
ENG Check the following for
leak.
IHose
I Radiator
I Water pump
Refer to LC section (ªWater
Pumpº).
CHECK RADIATOR CAP.
Apply pressure to cap with a tester.
Radiator cap relief pressure: 78 - 98 kPa (0.78 - 0.98 bar, 0.8 - 1.0
kg/cm
2, 11 - 14 psi)
OK
ENG Replace radiator cap.
CHECK THERMOSTAT.
1. Check valve seating condition at normal
room temperatures.
It should seat tightly.
2. Check valve opening temperature and valve lift.
Valve opening temperature:76.5ÉC (170ÉF) [standard]
Valve lift: More than 10 mm/90ÉC
(0.39 in/194ÉF)
3. Check if valve is closed at 5ÉC (9ÉF) below valve opening temperature.
For details, refer to LC section (ªThermo-
statº).
OK
ENG Replace thermostat
Check engine coolant temperature sensor.
Refer to ªCOMPONENT INSPECTIONº,
EC-449.
OK
ENGReplace engine coolant
temperature sensor.
If the cause can not be isolated, go to
ªMAIN 12 CAUSES OF OVERHEATINGº
on EC-448.
INSPECTION END
SLC754A
SLC755A
SLC343
H
H
H
H
H
H
DTC P1217 OVER HEATTD27Ti
Diagnostic Procedure (Cont'd)
EC-447
http://vnx.su/

Main 12 Causes of Overheating
Engine Step Inspection itemEquipmentConditionReference page
OFF 1
I
Blocked radiator
I Blocked radiator grille
I Blocked bumper I
Visual No blocking Ð
2 ICoolant mixture ICoolant tester 50 - 50% coolant mixture See MA section, ªRECOM-
MENDED FLUIDS AND
LUBRICANTSº.
3 ICoolant level IVisual Coolant up to MAX level in
reservoir tank and radiator
filler neck See LC section, ªChanging
Engine Coolantº.
4 IRadiator cap IPressure tester 78 - 98 kPa (0.78 - 0.98
bar, 0.8 - 1.0 kg/cm
2,11-14
psi)See LC section, ªSystem
Checkº.
ON*
25 ICoolant leaks IVisual No leaks See LC section, ªSystem
Checkº.
ON*
26 IThermostat I
Touch the upper and
lower radiator hoses Both hoses should be hot See LC section, ªThermo-
statº and ªRadiatorº.
ON*
17 ICooling fan ICONSULT-II Operating See Trouble Diagnosis for
DTC P1217, EC-441.
OFF 8 ICombustion gas leak I
Color checker chemical
tester 4 Gas analyzer Negative Ð
ON*
39 I
Coolant temperature
gauge I
Visual Gauge less than 3/4 when
driving Ð
I Coolant overflow to res-
ervoir tank I
Visual No overflow during driving
and idling See LC section, ªChanging
Engine Coolantº.
OFF*
410 I
Coolant return from res-
ervoir tank to radiator I
Visual Should be initial level in
reservoir tank See LC section, ªREFILL-
ING ENGINE COOLANTº.
OFF 11
ICylinder head I
Straight gauge feeler
gauge 0.1 mm (0.004 in) Maxi-
mum distortion (warping) See EM section, ªInspec-
tionº.
12 I
Cylinder block and pis-
tons I
Visual No scuffing on cylinder
walls or piston See EM section, ªInspec-
tionº.
*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 LC section, ªOVERHEATING CAUSE ANALYSISº.
DTC P1217 OVER HEATTD27Ti
EC-448
http://vnx.su/

7. Check foreign materials in oil pan to help determine cause ofmalfunction. If the fluid is very dark, smells burned, or contains
foreign particles, the frictional material (clutches, band) may
need replacement. A tacky film that will not wipe clean indicates
varnish build up. Varnish can cause valves, servo, and clutches
to stick and may inhibit pump pressure.
I If frictional material is detected, replace radiator after
repair of A/T. Refer to LC section (ªRadiatorº, ªENGINE
COOLING SYSTEMº).
8. Remove torque converter clutch solenoid valve and A/T fluid temperature sensor connectors.
I Be careful not to damage connector.
9. Remove oil strainer.
a. Remove oil strainer from control valve assembly then remove O-ring from oil strainer.
b. Check oil strainer screen for damage.
10. Remove control valve assembly.
a. Straighten terminal clips to free terminal cords then remove terminal clips.
SAT171B
NAT228
SAT008B
SAT025B
SAT009B
DISASSEMBLY
Disassembly (Cont'd)
AT-129
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