2003 NISSAN X-TRAIL low oil pressure

TROUBLE DIAGNOSIS
EC-69
[QR (WITH EURO-OBD)]
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EC
Symptom Matrix ChartEBS00BML
SYSTEM — BASIC ENGINE CONTROL SYSTEM
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
Fuel Fuel pump circuit 1 1 2 3 2 2 2 3 2EC-352
Fuel pressure regulator system 3 3 4 4 4 4 4 4 4 4EC-34
Injector circuit 1 1 2 3 2 2 2 2EC-343
Evaporativeemissionsystem 334444444 4EC-372
Air Positive crankcase ventilation sys-
tem334444444 41EC-375
Incorrect idle speed adjustment 3 3 1 1 1 1 1EC-64
Electric throttle control actuator 1 1 2 3 3 2 2 2 2 2 2EC-271
,
EC-273
,
EC-279
Ignition Incorrect ignition timing adjustment 3 3 1 1 1 1 1 1EC-64
Ignition circuit 1 1 2 2 2 2 2 2EC-334
Main power supply and ground circuit 2 2 3 3 3 3 3 2 3EC-108
Mass air flow sensor circuit 1 1 2 2 2 2 2 2EC-130,
EC-260
Engine coolant temperature sensor circuit 1 1 2 2 2 3 2 2 3 1 2EC-141
Throttle position sensor circuit 1 2 2 2 2 2 2 2EC-146
Accelerator pedal position sensor circuit 3 2 1 2 2EC-154
Heated oxygen sensor 1 circuit 1 2 3 2 2 2 2EC-160
,
EC-166
,
EC-174
,
EC-284
,
EC-290
Knock sensor circuit 2 2 3EC-212
Crankshaft position sensor (POS) circuit 2 2EC-217
Camshaft position sensor (PHASE) circuit 2 2EC-223
Vehicle speed signal circuit 2 3 3 3EC-239
Power steering pressure sensor circuit 2 3 3 3 3EC-244
ECM 22333333333EC-249,
EC-256
Intake valve timing control solenoid valve cir-
cuit332 13223 3EC-117,
EC-266

EC-70
[QR (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
1 - 6: The numbers refer to the order of inspection.
(continued on next page)
SYSTEM — ENGINE MECHANICAL & OTHER
PNP switch circuit 3 3 3 3 3 3 3EC-325
Start signal circuit 2EC-348
Refrigerant pressure sensor circuit 2 3 3 3 3 4EC-359
Electrical load signal circuit 3 3 3 3EC-363
Airconditionercircuit 223333333 3 2AT C -3 0
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
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
Fuel Fuel tank
5
5FL-9
Fuel piping 5 5 5 5 5 5FL-3,EM-
29
Va p o r lo c k—
Valve deposit
555555 5—
Poor fuel (Heavy weight gaso-
line, Low octane)—

DTC P0300 - P0304 MULTIPLE CYLINDER MISFIRE, NO. 1 - 4 CYLINDER MIS-
FIRE
EC-209
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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 toEC-334, "
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 toMA-25, "
Checking
and Changing Spark Plugs".
7.CHECK COMPRESSION PRESSURE
Check compression pressure. Refer toEM-52, "
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 toEC-34, "
FUEL PRESSURE RELEASE".
3. Install fuel pressure gauge and check fuel pressure. Refer toEC-34, "
FUEL PRESSURE CHECK".
OK or NG
OK >> GO TO 9.
NG >> Follow the construction 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, 3.7 kg/cm
2,51psi)

EC-266
[QR (WITH EURO-OBD)]
DTC P1111 IVT CONTROL SOLENOID VALVE
DTC P1111 IVT CONTROL SOLENOID VALVE
PFP:23796
Component DescriptionEBS00B7P
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 ModeEBS00B7Q
Specification data are reference values.
ECM Terminals and Reference ValueEBS00B7R
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.)
On Board Diagnosis LogicEBS00B7S
PBIB0195E
MONITOR ITEM CONDITION SPECIFICATION
INT/V SOL (B1)
lEngine: After warming up
lShift lever: N
lAir conditioner switch: OFF
lNo-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]
lWarm-up condition
lIdle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
lWarm-up condition
lWhen 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.
lHarness or connectors
(Intake valve timing control solenoid
valve circuit is open or shorted.)
lIntake valve timing control solenoid valve

EC-400
[QR (WITHOUT EURO-OBD)]
BASIC SERVICE PROCEDURE
3. Remove fuel hose. Refer toEM-17, "INTAKE MANIFOLD".
lDo not twist or kink fuel hose because it is plastic hose.
lDo not remove fuel hose from quick connector.
lKeep the original fuel hose to be free from intrusion of dust or foreign substances with a suitable cover.
4. Install the fuel pressure gauge as shown in the figure.
lWipe off oil or dirt from hose insertion part using cloth moist-
ened with gasoline.
lApply proper amount of gasoline between top of the fuel tube
and No.1 spool.
lInsert fuel hose for fuel pressure check until it touches the
No.1 spool on fuel tube.
lUse NISSAN genuine hose clamp (part number: 16439
N4710 or 16439 40U00).
lWhen reconnecting fuel line, always use new clamps.
lWhen reconnecting fuel hose, check the original fuel hose for
damage and abnormality.
lUse a torque driver to tighten clamps.
lInstall hose clamp to the position within 1 - 2 mm (0.04 - 0.08
in).
lMake sure that clamp screw does not contact adjacent parts.
5. After connecting fuel hose for fuel pressure check, pull the hose
with a force of approximately 98 N (10 kg, 22 lb) to confirm fuel
tube does not come off.
6. Turn ignition switch "ON", and check for fuel leakage.
7. Start engine and check for fuel leakage.
8. Read the indication of fuel pressure gauge.
lDo not perform fuel pressure check with system operating. Fuel pressure gauge may indicate false
readings.
lDuring fuel pressure check, confirm for fuel leakage from fuel connection every 3 minutes.
9. If result is unsatisfactory, go to next step.
10. Check the following.
lFuel hoses and fuel tubes for clogging
lFuel filter for clogging
lFuel pump
lFuel pressure regulator for clogging
If OK, replace fuel pressure regulator.
IfNG,repairorreplace.Tightening torque: 1 - 1.5 N·m (0.1 - 0.15 kg-m, 9 - 13
in-lb)
At idling: Approximately 350 kPa (3.5 bar, 3.7 kg/cm
2,51psi)
PBIB0669E
PBIB0670E

TROUBLE DIAGNOSIS
EC-417
[QR (WITHOUT EURO-OBD)]
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EC
Symptom Matrix ChartEBS00BMY
SYSTEM — BASIC ENGINE CONTROL SYSTEM
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
Fuel Fuel pump circuit 1 1 2 3 2 2 2 3 2EC-627
Fuel pressure regulator system 3 3 4 4 4 4 4 4 4 4EC-399
Injector circuit 1 1 2 3 2 2 2 2EC-618
Evaporativeemissionsystem 334444444 4EC-647
Air Positive crankcase ventilation sys-
tem334444444 41EC-650
Incorrect idle speed adjustment 3 3 1 1 1 1 1EC-412
Electric throttle control actuator 1 1 2 3 3 2 2 2 2 2 2EC-534
,
EC-536
,
EC-542
Ignition Incorrect ignition timing adjustment 3 3 1 1 1 1 1 1EC-412
Ignition circuit 1 1 2 2 2 2 2 2EC-592
Main power supply and ground circuit 2 2 3 3 3 3 3 2 3EC-454
Mass air flow sensor circuit 1 1 2 2 2 2 2 2EC-463
Engine coolant temperature sensor circuit 1 1 2 2 2 3 2 2 3 1 2EC-470
Throttle position sensor circuit 1 2 2 2 2 2 2 2EC-475
Accelerator pedal position sensor circuit 3 2 1 2 2EC-484
Heated oxygen sensor 1 circuit 1 2 3 2 2 2 2EC-490,
EC-581
Knock sensor circuit 2 2 3EC-496
Crankshaft position sensor (POS) circuit 2 2EC-501
Camshaft position sensor (PHASE) circuit 2 2EC-507
Vehicle speed signal circuit 2 3 3 3EC-513
Power steering pressure sensor circuit 2 3 3 3 3EC-518
ECM 22333333333EC-523,
EC-530
Intake valve timing control solenoid valve cir-
cuit332 13223 3EC-608
PNP switch circuit 3 3 3 3 3 3 3EC-614
Start signal circuit 2EC-623
Refrigerant pressure sensor circuit 2 3 3 3 3 4EC-634

EC-608
[QR (WITHOUT EURO-OBD)]
IVT CONTROL SOLENOID VALVE
IVT CONTROL SOLENOID VALVE
PFP:23796
DescriptionEBS00BM1
SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing control solenoid
valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to
increase engine torque in low/mid speed range and output in high-speed range.
COMPONENT DESCRIPTION
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 ModeEBS00B9A
Specification data are reference values.
Sensor Input signal to ECM function ECM Actuator
Crankshaft position sensor (POS)
Engine speed
Intake valve
timing controlIntake valve timing control
solenoid valve Camshaft position sensor (PHASE)
Engine coolant temperature sensor Engine coolant temperature
Wheel sensor Vehicle speed
PBIB0540E
PBIB0195E
MONITOR ITEM CONDITION SPECIFICATION
INT/V SOL (B1)
lEngine: After warming up
lShift lever: N
lAir conditioner switch: OFF
lNo-loadIdle 0% - 2%
When revving engine up to 2,000 rpm
quicklyApprox. 0% - 50%

EC-660
[YD]
ENGINE CONTROL SYSTEM
System Chart
EBS0037B
Fuel Injection Control SystemEBS0036G
SYSTEM DESCRIPTION
Three types of fuel injection control are provided to accommodate engine operating conditions; normal control,
idle control and start control. The ECM determines the appropriate fuel injection control. Under each control,
the amount of fuel injected is adjusted to improve engine performance.
Pulse signals are exchanged between ECM and Electronic Drive Unit (EDU). EDU controls fuel injectors
according to the input signals to adjust the amount of fuel injected to the preset value.
START CONTROL
Input/Output Signal Chart
When the ECM receives a start signal from the ignition switch, the
ECM adapts the fuel injection system for the start control. The
amount of fuel injected at engine starting is a preset program value
in the ECM. The program is determined by the engine speed, engine
coolant temperature and common rail fuel pressure.
For better startability under cool engine conditions, the lower the
coolant temperature becomes, the greater the amount of fuel
injected. The ECM ends the start control when the engine speed
reaches the specific value, and shifts the control to the normal or idle
control.
Input (Sensor) ECM Function Output (Actuator)
lAccelerator pedal position sensor
lAccelerator pedal released position switch
lCommon rail fuel pressure sensor
lFuel temperature sensor
lEngine coolant temperature sensor
lCrankshaft position sensor (TDC)
lCamshaft position sensor
lVehicle speed sensor
lIgnition switch
lStop Lamp switch
lAir conditioner switch
lMass air flow sensor
lPark/neutral position switch
lBattery voltage
lPower steering oil pressure switchFuel injection controlEDU, Fuel injectors and Suction control
valve
Fuel injection timing controlEDU, Fuel injectors and Suction control
valve
Fuel cut controlEDU, Fuel injectors and Suction control
valve
Glow control system Glow relay & glow indictor lamp
On board diagnostic system Malfunction indicator (MI)
EGR volume control EGR volume control valve
Cooling fan control Cooling fan relay
Air conditioning cut control Air conditioner relay
Sensor Input Signal to ECM ECM Function Actuator
Engine coolant temperature sensor Engine coolant temperature
Fuel injection
control (start
control)EDU
Fuel injectors
Suction control valve Crankshaft position sensor (TDC) Engine speed
Camshaft position sensor Piston position
Ignition switch Start signal
Common rail fuel pressure sensor Common rail fuel pressure
SEF648S