2001 NISSAN X-TRAIL App sensor

IVT CONTROL SOLENOID VALVE
EC-1347
[QR20(WITHOUT EURO-OBD)]
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IVT CONTROL SOLENOID VALVEPFP:23796
DescriptionEBS00N9S
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 ModeEBS00N9T
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 speed and piston position
Engine coolant temperature sensor Engine coolant temperature
Wheel sensor Vehicle speed
PBIB0540E
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%

EC-1372
[QR20(WITHOUT EURO-OBD)]
FUEL PUMP CIRCUIT
FUEL PUMP
1. Disconnect fuel level sensor unit and fuel pump harness connector.
2. Check resistance between fuel level sensor unit and fuel pump
terminals 3 and 5.
CONDENSER
1. Turn ignition switch “OFF”.
2. Disconnect condenser harness connector.
3. Check resistance between condenser terminals as 1 and 2.
Removal and InstallationEBS00NAL
FUEL PUMP
Refer to FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" . Resistance: Approximately 1.0Ω [at 25°C (77°F)]
PBIB0658E
Resistance: Above 1 MΩ at 25°C (77°F)
SEF124Y

REFRIGERANT PRESSURE SENSOR
EC-1373
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REFRIGERANT PRESSURE SENSORPFP:92136
Component DescriptionEBS00NAM
The refrigerant pressure sensor is installed at the liquid tank of the
air conditioner system. The sensor uses an electrostatic volume
pressure transducer to convert refrigerant pressure to voltage. The
voltage signal is sent to ECM, and ECM controls cooling fan system.
ECM Terminals and Reference ValueEBS00NAN
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.
PBIB0503E
SEF099X
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
58 B Sensors' ground[Engine is running]
●Warm-up condition
●Idle speedApproximately 0V
65 RSensor's power sup-
ply[Ignition switch “ON”]Approximately 5V
83 R/LRefrigerant pressure
sensor[Engine is running]
●Warm-up condition
●Both A/C switch and blower switch are “ON”.
(Compressor operates.)1.0 - 4.0V

REFRIGERANT PRESSURE SENSOR
EC-1375
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Diagnostic ProcedureEBS00NAP
1.CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Turn A/C switch and blower switch “ON”.
3. Check voltage between ECM terminal 83 and ground with CON-
SULT-II or tester.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2.CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Turn A/C switch and blower switch “OFF”.
2. Stop engine.
3. Disconnect refrigerant pressure sensor harness connector.
4. Turn ignition switch “ON”.
5. Check voltage between refrigerant pressure sensor terminal 3
and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors E61, F38
●Harness for open or short between ECM and refrigerant pressure sensor
>> Repair harness or connectors. Voltage: 1.0 - 4.0V
PBIB0659E
PBIB0503E
Voltage: Approximately 5V
SEF479Y

SERVICE DATA AND SPECIFICATIONS (SDS)
EC-1391
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SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Fuel PressureEBS00NB0
Idle Speed and Ignition TimingEBS00NB1
*1: Under the following conditions:
●Air conditioner switch: OFF
●Electric load: OFF (Lights, heater fan & rear window defogger)
●Steering wheel: Kept in straight-ahead position
*2: It refrigerant pressure is low, the idle speed may not be increased.
Calculated Load ValueEBS00NB2
Mass Air Flow SensorEBS00NB3
*: Engine is warmed up to normal operating temperature and running under no-load.
Intake Air Temperature SensorEBS00NB4
Engine Coolant Temperature SensorEBS00NB5
Heated Oxygen Sensor 1 HeaterEBS00NB6
Heated Oxygen sensor 2 HeaterEBS00NB7
Crankshaft Position Sensor (POS)EBS00NB8
Refer to EC-1245, "Component Inspection" .
Camshaft Position Sensor (PHASE)EBS00NB9
Refer to EC-1251, "Component Inspection" .
Fuel pressure at idle kPa (bar, kg/cm2 , psi)Approximately 350 (3.5, 3.57, 51)
Target idle speed
No-load*1 (in “P” or N” position)A/T: 700±50 rpm
M/T: 650±50 rpm
Air conditioner: ONIn “P” or N” position
725 rpm or more*
2
Ignition timingIn “P” or N” position AT: 16°±5° BTDC
MT: 14°±5° BTDC
Calculated load value % (Using CONSULT-II or GST)
At idle10 - 35
At 2,500 rpm10 - 35
Supply voltageBattery voltage (11 - 14V)
Output voltage at idle1.1 - 1.5*V
Mass air flow (Using CONSULT-II or GST)1.4 - 4.0 g·m/sec at idle*
4.0 - 10.0 g·m/sec at 2,500 rpm*
Temperature °C (°F) Resistance kΩ
25 (77)1.9 - 2.1
80 (176)0.31 - 0.37
Temperature °C (°F) Resistance kΩ
20 (68) 2.1 - 2.9
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
Resistance [at 25°C (77°F)] 2.3 - 4.3Ω
Resistance [at 25°C (77°F)] 2.3 - 4.3Ω

INDEX FOR DTC
EC-1393
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[YD]INDEX FOR DTCPFP:00024
Alphabetical IndexEBS00368
X: Applicable —: Not applicable
DTC No. IndexEBS0036C
X: Applicable —: Not applicable Items
(CONSULT-II screen terms) DTC TripMI lighting
upReference page
ACCEL POS SENSOR P0120 1×EC-1460
ACCEL POS SW (F/C) P1510 1×EC-1531
BATTERY VOLTAGE P1660 1×EC-1542
CAM POS SEN/CIR P0340 1×EC-1484
CAN COMM CIRCUIT U1000 1×EC-1448
COOLANT TEMP SEN P0115 1×EC-1456
CR PRES SEN P0190 1×EC-1468
CRANK POS SEN (TDC) P0335 1×EC-1479
CYL1 INJECTOR P0201 1×EC-1472
CYL2 INJECTOR P0202 1×EC-1472
CYL3 INJECTOR P0203 1×EC-1472
CYL4 INJECTOR P0204 1×EC-1472
ECM 1 P1606 1×EC-1536
ECM 10 P1107 1×EC-1494
ECM 15 P1621 1 —EC-1538
FUEL LEAK FNCTN P1305 1×EC-1529
INJ DRIVE UNIT P1216 1×EC-1501
INJ1 CORREC R P1301 1 —EC-1525
INJ2 CORREC R P1302 1 —EC-1525
INJ3 CORREC R P1303 1 —EC-1525
INJ4 CORREC R P1304 1 —EC-1525
MAS AIR FLOW SEN P0100 1×EC-1451
NATS MALFUNCTION P1610 - P1617 1 —BL-80
NO DTC IS DETECTED.
FURTHER TESTING MAY BE REQUIRED.P0000—— —
OVER HEAT P1217 1×EC-1508
P9·FUEL TEMP SEN P1180 1×EC-1496
SUCTION CONT/V1 P1233 1×EC-1519
SUCTION CONT/V2 P1234 1×EC-1519
TCS/CIRC P1212 1×EC-1500
TCS C/U FUNCTN P1211 1×EC-1499
VEHICLE SPEED SEN P0500 1×EC-1489
DTCItems
(CONSULT-II screen item) Trip MI lighting up Reference page
U1000 CAN COMM CIRCUIT 1×EC-1448
P0000NO DTC IS DETECTED.
FURTHER TESTING MAY BE REQUIRED.—— —
P0100 MASS AIR FLOW SEN 1×EC-1451
P0115 COOLANT TEMP SEN 1×EC-1456

ENGINE CONTROL SYSTEM
EC-1399
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System ChartEBS0037B
*: The input signals are sent to the ECM through CAN communication line.
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)
●Accelerator pedal position sensor
●Accelerator pedal released position switch
●Common rail fuel pressure sensor
●Fuel temperature sensor
●Engine coolant temperature sensor
●Crankshaft position sensor (TDC)
●Camshaft position sensor
●Vehicle speed sensor
●ESP/TCS/ABS control unit*
●Ignition switch
●Stop L amp s witch
●Air conditioner switch
●Mass air flow sensor
●Park/neutral position switch
●Battery voltage
●Power steering oil pressure switch Fuel 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

EC-1400
[YD]
ENGINE CONTROL SYSTEM
IDLE CONTROL
Input/Output Signal Chart
When the ECM determines that the engine speed is at idle, the fuel injection system is adapted for the idle
control. The ECM regulates the amount of fuel injected corresponding to changes in load applied to the engine
to keep engine speed constant. The ECM also provides the system with a fast idle control in response to the
engine coolant temperature signal.
NORMAL CONTROL
Input/Output Signal Chart
The amount of fuel injected under normal driving conditions is deter-
mined according to sensor signals. The crankshaft position sensor
(TDC) detects engine speed, the accelerator pedal position sensor
detects accelerator pedal position and common rail fuel pressure
sensor detects common rail fuel pressure. These sensors send sig-
nals to the ECM.
The fuel injection data, predetermined by correlation between vari-
ous engine speeds, accelerator pedal positions and common rail fuel
pressure are stored in the ECM memory, forming a map. The ECM
determines the optimal amount of fuel to be injected using the sen-
sor signals in comparison with the map.
MAXIMUM AMOUNT CONTROL
Input/Output Signal Chart
The maximum injection amount is controlled to an optimum by the engine speed, intake air amount, engine
coolant temperature, and accelerator opening in accordance with the driving conditions.
This prevents the oversupply of the injection amount caused by decreased air density at a high altitude or dur-
ing a system failure.
Sensor Input Signal to ECM ECM Function Actuator
Engine coolant temperature sensor Engine coolant temperature
Fuel injection
control (Idle
control)EDU
Fuel injectors
Suction control valve Crankshaft position sensor (TDC) Engine speed
Battery Battery voltage
Accelerator pedal position sensor Accelerator pedal position
Accelerator pedal released position switch Accelerator pedal released position
Vehicle speed sensor Vehicle speed
Air conditioner switch Air conditioner signal
Common rail fuel pressure sensor Common rail fuel pressure
Sensor Input Signal to ECM ECM Function Actuator
Crankshaft position sensor (TDC) Engine speed
Fuel injection
control (Nor-
mal control)EDU
Fuel injectors
Suction control valve Accelerator pedal position sensor Accelerator position
Common rail fuel pressure sensor Common rail fuel pressure
SEF649S
Sensor Input Signal to ECM ECM Function Actuator
Mass air flow sensor Amount of intake air
Fuel injection
control (Maxi-
mum amount
control)EDU
Fuel Injectors Engine coolant temperature sensor Engine coolant temperature
Crankshaft position sensor (TDC) Engine speed
Accelerator pedal position sensor Accelerator position