2003 NISSAN X-TRAIL engine coolant

EC-548
[QR (WITHOUT EURO-OBD)]
DTC P1217 ENGINE OVER TEMPERATURE
DTC P1217 ENGINE OVER TEMPERATURE
PFP:00000
System DescriptionEBS00BJ9
COOLING FAN CONTROL
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant
pressure, and air conditioner ON signal. The control system has 3-step control [HIGH/LOW/OFF].
OPERATION
CONSULT-II Reference Value in Data Monitor ModeEBS00BJA
Specification data are reference values.
Sensor Input Signal to PCMECM
functionActuator
Wheel sensor Vehicle speed
Cooling
fan controlCooling fan relay(s) Engine coolant temperature sensor Engine coolant temperature
Air conditioner switch Air conditioner “ON” signal
Ignition switch Start signal
Refrigerant pressure sensor Refrigerant pressure
PBIB0576E
MONITOR ITEM CONDITION SPECIFICATION
AIR COND SIG
lEngine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON

DTC P1217 ENGINE OVER TEMPERATURE
EC-549
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ECM Terminals and Reference ValueEBS00BJB
Specification data are reference values and are measured between each terminal and body ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
On Board Diagnosis LogicEBS00BJC
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.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant. Refer toCO-9, "
Changing Engine
Coolant". Also, replace the engine oil. Refer toLU-8, "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 toMA-19, "
Engine Coolant Mixture Ratio".
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function CheckEBS00BJD
Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.
COOLING FAN
lEngine: After warming up, idle
the engine
lAir conditioner switch: OFFEngine coolant temperature is 94°C
(201°F) or lessOFF
Engine coolant temperature is
between 95°C (203°F) and 104°C
(219°F)LOW
Engine coolant temperature is 105°C
(221°F) or moreHIGH MONITOR ITEM CONDITION SPECIFICATION
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
27 LG/BCooling fan relay
(High)[Engineisrunning]
lCooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
[Engineisrunning]
lCooling fan is high speed operating0-1.0V
37 LGCooling fan relay
(Low)[Engineisrunning]
lCooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
[Engineisrunning]
lCooling fan is operating0-1.0V
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1217
1217Engine over tempera-
ture (Overheat)
lCooling fan does not operate properly (Over-
heat).
lCooling fan system does not operate prop-
erly (Overheat).
lEngine coolant was not added to the system
using the proper filling method.
lHarness or connectors
(The cooling fan circuit is open or
shorted.)
lCooling fan
lRadiator hose
lRadiator
lRadiator cap
lWater pump
lThermostat
For more information, refer toEC-560,
"Main 12 Causes of Overheating".

EC-550
[QR (WITHOUT EURO-OBD)]
DTC P1217 ENGINE OVER TEMPERATURE
WAR NIN G:
Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the radiator.
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 toEC-553,
"Diagnostic Procedure".
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go toEC-553,
"Diagnostic Procedure".
3. Turn ignition switch “ON”.
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II.
5. If the results are NG, go toEC-553, "
Diagnostic Procedure".
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 toEC-553,
"Diagnostic Procedure".
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go toEC-553,
"Diagnostic Procedure".
3. Start engine.
Be careful not to overheat engine.
4. Set temperature control lever to full cold position.
5. Turn air conditioner switch “ON”.
6. Turn blower fan switch “ON”.
7. Run engine at idle for a few minutes with air conditioner operating.
Be careful not to overheat engine.
8. Make sure that cooling fan operates at low speed.
If NG, go toEC-553, "
Diagnostic 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 150Wresistor to engine coolant temperature sensor
harness connector.
SEF621W
SEF646X
SEF621W
SEC163BA

EC-554
[QR (WITHOUT EURO-OBD)]
DTC P1217 ENGINE OVER TEMPERATURE
4.CHECK COOLING FAN LOW SPEED OPERATION
Without CONSULT-II
1. Disconnect cooling fan relays-2 and -3.
2. Start engine and let it idle.
3. Set temperature lever at full cold position.
4. Turn air conditioner switch “ON”.
5. Turn blower fan switch “ON”.
6. Make sure that cooling fans-1 and -2 operate at low speed.
OK or NG
OK >> GO TO 5.
NG >> Check cooling fan low speed control circuit. (Go toEC-
556, "PROCEDURE A".)
5.CHECK COOLING FAN HIGH SPEED OPERATION
Without CONSULT-II
1. Turn ignition switch “OFF”.
2. Reconnect cooling fan relays-2 and -3.
3. Turn air conditioner switch and blower fan switch “OFF”.
4. Disconnect engine coolant temperature sensor harness connector.
5. Connect 150Wresistor to engine coolant temperature sensor harness connector.
6. Restart engine and make sure that cooling fans-1 and -2 oper-
ate at higher speed than low speed.
OK or NG
OK >> GO TO 6.
NG >> Check cooling fan high speed control circuit. (Go toEC-
558, "PROCEDURE B".)
PBIB0505E
SEC163BA
MEC475B

DTC P1217 ENGINE OVER TEMPERATURE
EC-555
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6.CHECK COOLING SYSTEM FOR LEAK
Apply pressure to the cooling system with a tester, and check if the
pressure drops.
CAUTION:
Higher than the specified pressure may cause radiator damage.
Pressure should not drop.
OK or NG
OK >> GO TO 7.
NG >> Check the following for leak
lHose
lRadiator
lWater pump
Refer toCO-19, "
WATER PUMP".
7.CHECKRADIATORCAP
Applypressuretocapwithatester.
OK or NG
OK >> GO TO 8.
NG >> Replace radiator cap.
8.CHECK THERMOSTAT
1. Check valve seating condition at normal room temperatures.
It should seat tightly.
2. Check valve opening temperature and valve lift.
3. Check if valve is closed at 5°C(9°F) below valve opening tem-
perature.
For details, refer toCO-21, "
THERMOSTAT AND WATER CON-
TROL VALVE".
OK or NG
OK >> GO TO 9.
NG >> Replace thermostat
9.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer toEC-474, "
Component Inspection".
OK or NG
OK >> GO TO 10.
NG >> Replace engine coolant temperature sensor.Testing pressure: 157 kPa (1.57 bar, 1.6 kg/cm
2,23psi)
SLC754A
Radiator cap relief pressure: 59 - 98 kPa (0.59 - 0.98 bar,
0.6-1.0kg/cm
2,9-14psi)
SLC755A
Valve opening temperature: 82°C(180°F) [standard]
Valve lift: More than 8 mm/95°C
(0.31 in/203°F)
SLC343

EC-560
[QR (WITHOUT EURO-OBD)]
DTC P1217 ENGINE OVER TEMPERATURE
7.CHECK COOLING FAN MOTORS
Refer toEC-561, "
Component Inspection".
OK or NG
OK >> GO TO 8.
NG >> Replace cooling fan motors.
8.CHECK INTERMITTENT INCIDENT
PerformEC-453, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END
Main 12 Causes of OverheatingEBS00BJG
*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 toCO-5, "
OVERHEATING CAUSE ANALYSIS". Engine Step Inspection item Equipment Standard Reference page
OFF 1
lBlocked radiator
lBlocked condenser
lBlocked radiator grille
lBlocked bumper
lVisual No blocking —
2
lCoolant mixturelCoolant tester 50 - 50% coolant mixture SeeMA-19, "Engine
Coolant Mixture Ratio".
3
lCoolant levellVisual Coolant up to MAX level
in reservoir tank and radi-
ator filler neckSeeCO-9, "Changing
Engine Coolant".
4
lRadiator caplPressure tester 59 - 98 kPa
(0.59 - 0.98 bar, 0.6 - 1.0
kg/cm
2,9-14psi)(Limit)SeeCO-13, "
CHECKING
RADIATOR CAP".
ON*
25lCoolant leakslVisual No leaks SeeCO-9, "LEAK
CHECK".
ON*
26lThermostatlTouch the upper and
lower radiator hosesBoth hoses should be hot SeeCO-21, "THERMO-
S TAT A N D WAT E R C O N -
TROL VALVE",andCO-
12, "RADIATOR".
ON*
17lCooling fanlCONSULT-II Operating See trouble diagnosis for
DTC P1217 (EC-548
).
OFF 8
lCombustion gas leaklColor checker chemical
tester 4 Gas analyzerNegative —
ON*
39lCoolant temperature
gaugelVisual Gauge less than 3/4
when driving—
lCoolant overflow to
reservoir tanklVisual No overflow during driving
and idlingSeeCO-9, "Changing
Engine Coolant".
OFF*
410lCoolant return from
reservoir tank to radia-
torlVisual Should be initial level in
reservoir tankSeeCO-9, "LEVEL
CHECK".
OFF 11
lCylinder headlStraight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)SeeEM-52, "CYLINDER
HEAD".
12
lCylinder block and pis-
tonslVisual No scuffing on cylinder
walls or pistonSeeEM-52, "CYLINDER
HEAD".

EC-568
[QR (WITHOUT EURO-OBD)]
HO2S1 HEATER
HO2S1 HEATER
PFP:22690
DescriptionEBS00BJQ
SYSTEM DESCRIPTION
The ECM performs ON/OFF duty control of the heated oxygen sensor 1 heater corresponding to the engine
speed and engine coolant temperature. The duty percent varies with engine coolant temperature when engine
is started.
OPERATION
CONSULT-II Reference Value in Data Monitor ModeEBS00BJR
Specification data are reference values.
ECM Terminals and Reference ValueEBS00BJS
Specification data are reference values and are measured between each terminal and body ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)Sensor Input Signal to ECM ECM function Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)Engine speed
Heated oxygen sensor 1
heater controlHeated oxygen sensor 1 heater
Engine coolant temperature sensorEngine coolant tempera-
ture
Engine speed rpm Heated oxygen sensor 1 heater
Above 3,600 OFF
Below 3,600 ON
MONITOR ITEM CONDITION SPECIFICATION
HO2S1 HTR (B1)
lEngine: After warming up
lEngine speed: Below 3,600 rpmON
lEngine speed: Above 3,600 rpm OFF
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
2P/LHeated oxygen sen-
sor 1 heater[Engine is running]
lWarm-up condition
lEngine speed is below 3,600 rpm.Approximately 7.0V
[Engine is running]
lEngine speed is above 3,600 rpm.BATTERY VOLTAGE
(11 - 14V)
PBIB0519E

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-601
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EC
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVEPFP:14920
DescriptionEBS00B92
SYSTEM DESCRIPTION
This system controls flow rate of fuel vapor from the EVAP canister. The opening of the vapor by-pass pas-
sage in the EVAP canister purge volume control solenoid valve changes to control the flow rate. The EVAP
canister purge volume control solenoid valve repeats ON/OFF operation according to the signal sent from the
ECM. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is
determined by considering various engine conditions. When the engine is operating, the flow rate of fuel vapor
from the EVAP canister is regulated as the air flow changes.
COMPONENT DESCRIPTION
The EVAP canister purge volume control solenoid valve uses a ON/
OFF duty to control the flow rate of fuel vapor from the EVAP canis-
ter. The EVAP canister purge volume control solenoid valve is
moved by ON/OFF pulses from the ECM. The longer the ON pulse,
the greater the amount of fuel vapor that will flow through the valve.
CONSULT-II Reference Value in Data Monitor ModeEBS00B93
Specification data are reference values.
ECM Terminals and Reference ValueEBS00B94
Specification data are reference values and are measured between each terminal and body ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Sensor Input Signal to ECMECM
functionActuator
Crankshaft position sensor (POS) Engine speed
EVAP can-
ister purge
flow con-
trolEVAP canister purge volume
control solenoid valve Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Throttle position sensor Throttle position
Accelerator pedal position sensor Closed throttle position
Heated oxygen sensors 1Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Wheel sensor Vehicle speed
SEF337U
MONITOR ITEM CONDITION SPECIFICATION
PURG VOL C/V
lEngine: After warming up
lShiftlever:N
lAir conditioner switch: OFF
lNo-loadIdle 0%
2,000 rpm 20 - 30%