NISSAN X-TRAIL 2001 Service Repair Manual

SERVICE DATA AND SPECIFICATIONS (SDS)
EC-1391
[QR20(WITHOUT EURO-OBD)]
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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

EC-1392
[QR20(WITHOUT EURO-OBD)]
SERVICE DATA AND SPECIFICATIONS (SDS)
Throttle Control Motor
EBS00NBA
InjectorEBS00NBB
Fuel PumpEBS00NBC
Resistance [at 25°C (77°F)] Approximately 1 - 15Ω
Resistance [at 20°C (68°F)] 13.5 - 17.5Ω
Resistance [at 25°C (77°F)] Approximately 1.0Ω

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

EC-1394
[YD]
INDEX FOR DTC
P0120 ACCEL POS SENSOR 1×EC-1460
P0190 CR PRES SEN 1×EC-1468
P0201 CYL1 INJECTOR 1×EC-1472
P0202 CYL2 INJECTOR 1×EC-1472
P0203 CYL3 INJECTOR 1×EC-1472
P0204 CYL4 INJECTOR 1×EC-1472
P0335 CRANK POS SEN (TDC) 1×EC-1479
P0340 CAM POS SEN/CIR 1×EC-1484
P0500 VEHICLE SPEED SEN 1×EC-1489
P1107 ECM 10 1×EC-1494
P1180 P9·FUEL TEMP SEN 1×EC-1496
P1211 TCS C/U FUNCTN 1×EC-1499
P1212 TCS/CIRC 1×EC-1500
P1216 INJ DRIVE UNIT 1×EC-1501
P1217 OVER HEAT 1×EC-1508
P1233 SUCTION CONT/V1 1×EC-1519
P1234 SUCTION CONT/V2 1×EC-1519
P1301 INJ1 CORREC R 1 —EC-1525
P1302 INJ2 CORREC R 1 —EC-1525
P1303 INJ3 CORREC R 1 —EC-1525
P1304 INJ4 CORREC R 1 —EC-1525
P1305 FUEL LEAK FNCTN 1×EC-1529
P1510 ACCEL POS SW (F/C) 1×EC-1531
P1606 ECM 1 1×EC-1536
P1610 - P1617 NATS MALFUNTION 1 —BL-80
P1621 ECM 15 1 —EC-1538
P1660 BATTERY VOLTAGE 1×EC-1542
DTCItems
(CONSULT-II screen item) Trip MI lighting up Reference page

PRECAUTIONS
EC-1395
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EBS00NBT
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
●To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
●Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
●Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harness connec-
tors.
PrecautionsEBS00317
●Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative
battery terminal. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned off.
●Do not disassemble ECM.
●When connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.
●Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in coil and condenser, thus resulting in
damage to IC's.
●Keep engine control system harness at least 10cm (4 in)
away from adjacent harness, to prevent engine control sys-
tem malfunctions due to receiving external noise, degraded
operation of IC's, etc.
●Keep engine control system parts and harness dry.
SEF289H
PBIB0378E
SEF291H

EC-1396
[YD]
PRECAUTIONS
●Before replacing ECM, perform Terminals and Reference
Value inspection and make sure ECM functions properly.
Refer to EC-1425
.
●After performing each TROUBLE DIAGNOSIS, perform
“DTC Confirmation Procedure” or “Overall Function
Check”.
The DTC should not be displayed in the “ DTC Confirmation
Procedure” if the repair is completed. The “Overall Func-
tion Check” should be a good result if the repair is com-
pleted.
●When measuring ECM signals with a circuit tester, never
allow the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.
●Do not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM's
transistor. Use a ground other than ECM terminals, such as
the ground.
●Do not depress accelerator pedal when staring.
●Immediately after staring, do not rev up engine unnecessar-
ily.
●Do not rev up engine just prior to shutdown.
●When installing C.B. ham radio or a mobile phone, be sure
to observe the following as it may adversely affect elec-
tronic control systems depending on installation location.
–Keep the antenna as far as possible from the electronic
control units.
–Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Do not let them run parallel for a long distance.
–Adjust the antenna and feeder line so that the standingwave
radio can be kept smaller.
MEF040D
SEF348N
SEF709Y
SEF708Y

PRECAUTIONS
EC-1397
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–Be sure to ground the radio to vehicle body.
Wiring Diagrams and Trouble DiagnosisEBS00318
When you read Wiring diagrams, refer to the following:
●GI-13, "How to Read Wiring Diagrams".
●PG-2, "POWER SUPPLY ROUTING" for power distribution circuit
When you perform trouble diagnosis, refer to the following:
●GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES".
●GI-23, "How to Perform Efficient Diagnosis for an Electrical Incident".

EC-1398
[YD]
ENGINE CONTROL SYSTEM
ENGINE CONTROL SYSTEM
PFP:23710
System DiagramEBS0037A
PBIB1410E

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