2001 NISSAN X-TRAIL engine oil

DTC P0171 FUEL INJECTION SYSTEM FUNCTION
EC-205
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7.CHECK INJECTOR
1. Confirm that the engine is cooled down and there are no fire hazards near the vehicle.
2. Turn ignition switch “OFF”.
3. Disconnect injector harness connectors.
4. Remove injector gallery assembly. Refer to EM-32
.
Keep fuel hose and all injectors connected to injector gallery.
The injector harness connectors should remain connected.
5. Disconnect all ignition coil harness connectors.
6. Prepare pans or saucers under each injector.
7. Crank engine for about 3 seconds. Make sure that fuel sprays
out from injectors.
OK or NG
OK >> GO TO 8.
NG >> Replace injectors from which fuel does not spray out.
Always replace O-ring with new ones.
8.CHECK INTERMITTENT INCIDENT
Refer to EC-115, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Fuel should be sprayed evenly for each injector.
SEF595Q

DTC P0172 FUEL INJECTION SYSTEM FUNCTION
EC-211
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7.CHECK INJECTOR
1. Remove injector assembly. Refer to EM-32, "
FUEL INJECTOR AND FUEL TUBE" .
Keep fuel hose and all injectors connected to injector gallery.
2. Confirm that the engine is cooled down and there are no fire hazards near the vehicle.
3. Disconnect injector harness connectors.
The injector harness connectors should remain connected.
4. Disconnect all ignition coil harness connectors.
5. Prepare pans or saucers under each injectors.
6. Crank engine for about 3 seconds.
Make sure fuel does not drip from injector.
OK or NG
OK (Does not drip.)>>GO TO 8.
NG (Drips.)>>Replace the injectors from which fuel is dripping. Always replace O-ring with new one.
8.CHECK INTERMITTENT INCIDENT
Refer to EC-115, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END

EC-220
[QR25(WITH EURO-OBD)]
DTC P0300 - P0304 MULTIPLE CYLINDER MISFIRE, NO. 1 - 4 CYLINDER MIS-
FIRE
5. CHECK IGNITION SPARK
1. Disconnect ignition coil assembly from rocker cover.
2. Connect a known-good spark plug to the ignition coil assembly.
3. Place end of spark plug against a suitable ground and crank engine.
4. Check for spark.
OK or NG
OK >> GO TO 6.
NG >> Check ignition coil, power transistor and their circuits.
Refer to EC-379, "
IGNITION SIGNAL" .
6. CHECK SPARK PLUGS
Remove the spark plugs and check for fouling, etc.
OK or NG
OK >> GO TO 7.
NG >> Repair or replace spark plug(s) with standard type
one(s). For spark plug type, refer to MA-24, "
Checking
and Changing Spark Plugs" .
7. CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to EM-59, "
CHECKING COMPRESSION PRESSURE" .
OK or NG
OK >> GO TO 8.
NG >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
8. CHECK FUEL PRESSURE
1. Install all removed parts.
2. Release fuel pressure to zero. Refer to EC-42, "
FUEL PRESSURE RELEASE" .
3. Install fuel pressure gauge and check fuel pressure. Refer to EC-42, "
FUEL PRESSURE CHECK" .
OK or NG
OK >> GO TO 9.
NG >> Follow the Instruction of “FUEL PRESSURE CHECK”.
SEF575Q
SEF156I
Standard:
1,190 kPa (11.9 bar, 12.1 kg/cm2 , 172 psi)/250
rpm
Minimum:
990 kPa (9.9 bar, 10.1 kg/cm
2 , 144 psi)/250 rpm
Difference between each
cylinder:98 kPa (0.98 bar, 1.0 kg/cm
2 , 14 psi)/250 rpm
At idle: Approx. 350 kPa (3.5 bar, 3.57 kg/cm
2 , 51 psi)

EC-242
[QR25(WITH EURO-OBD)]
DTC P0420 THREE WAY CATALYST FUNCTION
4. CHECK IGNITION TIMING
Check the following items. Refer to EC-73, "
Basic Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Follow the “Basic Inspection”.
5. CHECK INJECTORS
1. Refer to Wiring Diagram for Injectors, EC-389
.
2. Stop engine and then turn ignition switch “ON”.
3. Check voltage between ECM terminals 101, 102, 103, 104 and
ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 6.
NG >> Perform EC-390, "
Diagnostic Procedure" .
6. CHECK IGNITION SPARK
1. Turn ignition switch “OFF”.
2. Disconnect ignition coil assembly from rocker cover.
3. Connect a known-good spark plug to the ignition coil assembly.
4. Place end of spark plug against a suitable ground and crank engine.
5. Check for spark.
OK or NG
OK >> GO TO 7.
NG >> Check ignition coil with power transistor and their circuit.
Refer to EC-379, "
IGNITION SIGNAL" .
Items Specifications
Ignition timingA/T 15°± 5° BTDC (in “P” or “N” position)
M/T 15°± 5° BTDC
Target idle speedA/T 700 ± 50 rpm (in “P” or “N” position)
M/T 700 ± 50 rpm
Battery voltage should exist.
PBIB0568E
SEF575Q

DTC P1111 IVT CONTROL SOLENOID VALVE
EC-271
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D T C P 1111 I V T C O N T R O L S O L EN O I D VA LV EPFP:23796
Component DescriptionEBS00M70
Intake valve timing control solenoid valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The intake valve timing control solenoid valve changes the oil
amount and direction of flow through intake valve timing control unit
or stops oil flow.
The longer pulse width advances valve angle.
The shorter pulse width retards valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the intake valve angle at the control
position.
CONSULT-II Reference Value in Data Monitor ModeEBS00M71
Specification data are reference values.
ECM Terminals and Reference ValueEBS00M72
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II
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.)
On Board Diagnosis LogicEBS00M73
PBIB0195E
MONITOR ITEM CONDITION SPECIFICATION
INT/V SOL (B1)
●Engine: After warming up
●Shift lever: N
●Air conditioner switch: OFF
●No-loadIdle 0% - 2%
When revving engine up to 2,000 rpm
quicklyApprox. 0% - 50%
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
107 Y/RIntake valve timing
control solenoid valve[Engine is running]
●Warm-up condition
●Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●Warm-up condition
●When revving engine up to 2,000 rpm quicklyApproximately 4V - BATTERY
VOLTAGE (11 - 14V)
PBIB0532E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P 1111
1111Intake valve timing con-
trol solenoid valve cir-
cuitAn improper voltage is sent to the ECM
through intake valve timing control solenoid
valve.
●Harness or connectors
(Intake valve timing control solenoid
valve circuit is open or shorted.)
●Intake valve timing control solenoid valve

EC-324
[QR25(WITH EURO-OBD)]
DTC P1217 ENGINE OVER TEMPERATURE
ECM Terminals and Reference Value
EBS00M91
Specification data are reference values and are measured between each terminal and 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 LogicEBS00M92
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-29, "
Changing Engine
Coolant" . Also, replace the engine oil. Refer to LU-19, "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-18, "
Engine Coolant Mixture Ratio" .
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
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 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)[Engine is running]
●Cooling fan is not operating
●Cooling fan is operating at low speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●Cooling fan is operating at high speed0 - 1.0V
37 LYCooling fan relay
(Low)[Engine is running]
●Cooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●Cooling fan is operating0 - 1.0V
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.
●Harness or connectors
(The cooling fan circuit is open or
shorted.)
●Cooling fan
●Radiator hose
●Radiator
●Radiator cap
●Water pump
●Thermostat
For more information, refer to EC-335,
"Main 12 Causes of Overheating" .

IGNITION SIGNAL
EC-379
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IGNITION SIGNALPFP:22448
Component DescriptionEBS00MAY
IGNITION COIL & POWER TRANSISTOR
The ignition signal from the ECM is sent to and amplified by the
power transistor. The power transistor turns on and off the ignition
coil primary circuit. This on-off operation induces the proper high
voltage in the coil secondary circuit.
ECM Terminals and Reference ValueEBS00MAZ
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II
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.)
PBIB0509E
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
21
22
23
24BR
PU
L/R
GY/RIgnition signal No. 1
Ignition signal No. 2
Ignition signal No. 3
Ignition signal No. 4[Engine is running]
●Warm-up condition
●Idle speed0 - 0.1V
[Engine is running]
●Warm-up condition
●Engine speed is 2,000 rpm.0 - 0.2V
PBIB0521E
PBIB0522E

IGNITION SIGNAL
EC-385
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12.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect ignition coil harness connector.
4. Turn ignition switch ON.
5. Check voltage between ignition coil terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 14.
NG >> GO TO 13.
13.DETECT MALFUNCTIONING PART
Check the following.
●Harness for open or short between ignition coil and ECM relay
●Harness for open or short between ignition coil and ECM
>> Repair or replace harness or connectors.
14.CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between ignition coil terminal 2 and engine ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 15.
NG >> Repair open circuit or short to power in harness or connectors.
PBIB0509E
Voltage: Battery voltage
SEF107S
Continuity should exist.