2005 NISSAN X-TRAIL Engine cooling system

TROUBLE DIAGNOSIS
EC-87
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1 - 6: The numbers refer to the order of inspection.Va l v e
mecha-
nismTiming chain
55555 55 5EM-46
CamshaftEM-56
Intake valve timing controlEM-46
Intake valve
3EM-70
Exhaust valve
Exhaust Exhaust manifold/Tube/Muffler/
Gasket
55555 55 5EM-25
, EX-
2Three way catalyst
Lubrica-
tionOil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery
55555 55 52EM-27
, LU-
13 , LU-10 ,
LU-5
Oil level (Low)/Filthy oilLU-7
Cooling Radiator/Hose/Radiator filler cap
55555 55 25CO-12
Thermostat 5CO-23
Water pumpCO-21
Water galleryCO-7
Cooling fan 5CO-19
Coolant level (low)/Contaminated
coolantCO-9
NATS (Nissan Anti-theft System) 1 1EC-64 or
BL-108
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

EC-104
[QR (WITH EURO-OBD)]
TROUBLE DIAGNOSIS

ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
X: ApplicableItemDIAGNOSTIC TEST MODE
WORK
SUP-
PORTSELF-DIAGNOS-
TIC RESULTS
DATA
MONI-
TORDATA
MONI-
TOR
(SPEC)ACTIVE
TESTDTC & SRT
CONFIRMATION
DTC*
1FREEZE
FRAME
DATA*
2
SRT
STATUSDTC
WORK
SUP-
PORT
ENGINE CONTROL COMPONENT PARTS
INPUT
Crankshaft position sensor (POS)××××
Camshaft position sensor (PHASE)×××
Mass air flow sensor×××
Engine coolant temperature sensor×××××
Heated oxygen sensor 1×××××
Heated oxygen sensor 2×××××
Vehicle speed signal××××
Accelerator pedal position sensor×××
Throttle position sensor×××
Intake air temperature sensor××××
Knock sensor×
Refrigerant pressure sensor××
Closed throttle position switch
(accelerator pedal position sensor
signal)××
Air conditioner switch××
Park/neutral position (PNP) switch×××
Stop lamp switch×××
Power steering pressure sensor×××
Battery voltage××
Electrical load signal××
ASCD steering switch*
3×××
ASCD brake switch*
3×××
ASCD clutch switch*
3×××
ENGINE CONTROL COMPONENT PARTS
OUTPUT
Fuel injector×××
Power transistor (Ignition timing)×××
Throttle control motor relay×××
Throttle control motor×
EVAP canister purge volume control
solenoid valve××××
Air conditioner relay××
Fuel pump relay××××
Cooling fan relay××××
Heated oxygen sensor 1 heater××××
Heated oxygen sensor 2 heater××××
Intake valve timing control solenoid
valve××××
VIAS control solenoid valve×××
Calculated load value×××

TROUBLE DIAGNOSIS
EC-111
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NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ACTIVE TEST MODE
Test Item
*1:Leaving cooling fan OFF with CONSULT-II while engine is running may cause the engine to overheat.
DTC & SRT CONFIRMATION MODE
SRT STATUS Mode
For details, refer to EC-56, "SYSTEM READINESS TEST (SRT) CODE" .
SRT WORK SUPPORT Mode
This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.
TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
FUEL INJECTION

Engine: Return to the original
trouble condition

Change the amount of fuel injec-
tion using CONSULT-II.If trouble symptom disappears,
see CHECK ITEM.

Harness and connectors

Fuel injector

Heated oxygen sensor 1
IGNITION TIMING

Engine: Return to the original
trouble condition

Timing light: Set

Retard the ignition timing using
CONSULT-II.If trouble symptom disappears,
see CHECK ITEM.

Perform Idle Air Volume Learning.
POWER BALANCE

Engine: After warming up, idle
the engine.

Air conditioner switch: OFF

Shift lever: N (A/T), Neutral (M/T)

Cut off each injector signal one at
a time using CONSULT-II.Engine runs rough or dies.

Harness and connectors

Compression

Fuel injector

Power transistor

Spark plug

Ignition coil
COOLING FAN*
1

Ignition switch: ON

Turn the cooling fan LOW, HI,
OFF with CONSULT-II.Cooling fan moves and stops.

Harness and connectors

Cooling fan relay

Cooling fan motor
ENG COOLANT
TEMP

Engine: Return to the original
trouble condition

Change the engine coolant tem-
perature using CONSULT-II.If trouble symptom disappears,
see CHECK ITEM.

Harness and connectors

Engine coolant temperature sen-
sor

Fuel injector
FUEL PUMP RELAY

Ignition switch: ON (Engine
stopped)

Turn the fuel pump relay ON and
OFF using CONSULT-II and lis-
ten to operating sound.Fuel pump relay makes the oper-
ating sound.
Harness and connectors

Fuel pump relay
VIAS SOL VALVE*
2

Ignition switch: ON

Turn solenoid valve ON and OFF
with CONSULT-II and listen for
operating sound.Solenoid valve makes an operat-
ing sound.
Harness and connectors

Solenoid valve
PURG VOL CONT/V

Engine: After warming up, run
engine at 1,500 rpm.

Change the EVAP canister purge
volume control solenoid valve
opening percent using CON-
SULT-II.Engine speed changes according
to the opening percent.
Harness and connectors

Solenoid valve
V/T ASSIGN ANGLE

Engine: Return to the original
trouble condition

Change intake valve timing using
CONSULT-II.If trouble symptom disappears,
see CHECK ITEM.

Harness and connectors

Intake valve timing control sole-
noid valve

EC-166
[QR (WITH EURO-OBD)]
DTC P0117, P0118 ECT SENSOR

FAIL-SAFE MODE
When this malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
DTC Confirmation ProcedureEBS010NI
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go to EC-168, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Detected items Engine operating condition in fail-safe mode
Engine coolant temper-
ature sensor circuitEngine coolant temperature will be determined by ECM based on the time after turning ignition switch ON
or START. CONSULT-II displays the engine coolant temperature decided by ECM.
ConditionEngine coolant temperature decided
(CONSULT-II display)
Just as ignition switch is turned ON or START 40°C (104°F)
More than approx. 4 minutes after ignition ON or
START80°C (176°F)
Except as shown above40 - 80°C (104 - 176°F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cooling fan operates
while engine is running.
SEF058Y

EC-352
[QR (WITH EURO-OBD)]
DTC P1217 ENGINE OVER TEMPERATURE

DTC P1217 ENGINE OVER TEMPERATUREPFP:00000
System DescriptionEBS010T9
COOLING FAN CONTROL
*1: This signal is sent to ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
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
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
2
Cooling fan
controlCooling fan relay Engine coolant temperature sensor Engine coolant temperature
Battery
Battery voltage*2
Air conditioner switch Air conditioner ON signal
Refrigerant pressure sensor Refrigerant pressure
Wheel sensor*
1Vehicle speed
PBIB1987E

DTC P1217 ENGINE OVER TEMPERATURE
EC-353
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CONSULT-II Reference Value in Data Monitor ModeEBS010TA
Specification data are reference values.
On Board Diagnosis LogicEBS010TB
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-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 to MA-19, "
Engine Coolant Mixture Ratio" .
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function CheckEBS010TC
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 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.
MONITOR ITEM CONDITION SPECIFICATION
AIR COND SIG

Engine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON
COOLING FAN

Engine: After warming up, idle
the engine

Air conditioner switch: OFFEngine coolant temperature is 94°C
(201°F) or lessOFF
Engine coolant temperature is
between 95°C (203°F) and 99°C
(210°F) or moreLOW
Engine coolant temperature is 100°C
(212°F) or moreHIGH
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 prop-
erly (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
shorted.)

Cooling fan

Cooling fan relays

Radiator hose

Radiator

Radiator cap

Water pump

Thermostat
For more information, refer to EC-366,
"Main 12 Causes of Overheating" .

DTC P1217 ENGINE OVER TEMPERATURE
EC-361
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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.
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-21, "WATER PUMP" .)
>> Repair or replace.
8. CHECK RADIATOR CAP
Apply pressure to cap with a tester and check radiator cap relief
pressure.
OK or NG
OK >> GO TO 9.
NG >> Replace radiator cap.Testing pressure: 157 kPa (1.57 bar, 1.6 kg/cm
2 , 23psi)
Pressure should not drop.
SLC756AA
Radiator cap
relief pressure:59 - 98 kPa (0.59 - 0.98 bar, 0.6 - 1.0
kg/cm
2 , 9 - 14 psi)
SLC755AC

ENGINE CONTROL SYSTEM
EC-547
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System ChartEBS010WO
*1: This sensor is not used to control the engine system under normal conditions.
*2: This input signal is sent to the ECM through CAN communication line.
*3: This output signal is sent from the ECM through CAN communication line.
*4: With ESP models.
*5: Without ESP models.
*6: For QR25DE engine modelsInput (Sensor) ECM Function Output (Actuator)

Camshaft position sensor (PHASE)

Crankshaft position sensor (POS)

Mass air flow sensor

Engine coolant temperature sensor

Heated oxygen sensor 1

Throttle position sensor

Accelerator pedal position sensor

Park/neutral position (PNP) switch

Intake air temperature sensor

Power steering pressure sensor

Ignition switch

Battery voltage

Knock sensor

Refrigerant pressure sensor

Stop lamp switch

Heated oxygen sensor 2*1

TCM (Transmission control module)*2

ESP/TCS/ABS control unit*2 *4

ABS actuator and electric unit
(control unit)*2 *5

Air conditioner switch

Wheel sensor*2

Electrical load signal

ASCD steering switch*6

ASCD brake switch*6

ASCD clutch switch*6
Fuel injection & mixture ratio control Fuel injector
Electronic ignition system Power transistor
Fuel pump control Fuel pump relay
On board diagnostic system
MI (On the instrument panel)*
3
Heated oxygen sensor 1 heater control Heated oxygen sensor 1 heater
Heated oxygen sensor 2 heater control Heated oxygen sensor 2 heater
EVAP canister purge flow controlEVAP canister purge volume control
solenoid valve
Air conditioning cut control Air conditioner relay
Power valve control*
6VIAS control solenoid valve
ASCD vehicle speed control*
6Electric throttle control actuator
Cooling fan control Cooling fan relay