2003 NISSAN X-TRAIL stop start

TROUBLE DIAGNOSIS
EC-933
[YD (WITH EURO-OBD)]
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CONSULT-II Reference Value in Data Monitor ModeEBS0117H
Remarks:

Specification data are reference values.

Specification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
MONITOR ITEM CONDITION SPECIFICATION
CKPS-RPM (TDC)

Run engine and compare CONSULT-II value with the tachometer
indication.Almost the same speed as the
tachometer indication
COOLAN TEMP/S

Engine: After warming up More than 70°C (158°F)
VHCL SPEED SE

Turn drive wheels and compare CONSULT-II value with the speed-
ometer indicationAlmost the same speed as the
speedometer indication
FUEL TEMP SEN

Engine: After warming up More than 40°C (104°F)
ACCEL POS SEN*

Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.2 - 0.7V
Accelerator pedal: Fully depressed 3.9 - 4.9V
ACCEL SEN 2*

Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.1 - 0.4V
Accelerator pedal: Fully depressed 1.9 - 2.4V
MAS AIR/FL SE*

Engine: After warming up

Air conditioner switch: OFF

Shift lever: Neutral position

No-loadIdle 1.5 - 2.0V
2,000 rpm 2.2 - 2.7V
BATTERY VOLT

Ignition switch: ON (Engine stopped) 11 - 14V
P/N POSI SW

Ignition switch: ONShift lever: Neutral position ON
Except above OFF
START SIGNAL

Ignition switch: ON → START → ON OFF → ON → OFF
PW/ST SIGNAL

Engine: After warming up, idle
the engineSteering wheel is in neutral posi-
tion. (Forward direction)OFF
Steering wheel is turned. ON
BRAKE SW

Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
IGN SW

Ignition switch: ON → OFF ON → OFF
ACT CR PRESS

Engine: After warming up

Air conditioner switch: OFF

Shift lever: Neutral position

No-loadIdle 20 - 30 MPa
2,000 rpm 45 - 55 MPa
MAIN INJ WID

Engine: After warming up

Shift lever: Neutral position

Idle speedNo-load 0.68 - 0.78 msec
Blower fan switch: ON
Rear window defogger switch: ON0.78 - 0.88 msec
GLOW RLY Refer to EC-1169, "
GLOW CONTROL SYSTEM" .
PUMP CURRENT

Engine: After warming up

Air conditioner switch: OFF

Shift lever: Neutral position

No-loadIdle 1,700 - 1,900 mA
2,000 rpm 1,600 - 1,800 mA
COOLING FAN

When cooling fan is stopped. OFF

When cooling fans operate at low speed. LOW

When cooling fans operate at high speed. HI
EGR VOL CON/V

Engine: After warming up

Air conditioner switch: OFF

Shift lever: Neutral position

No-loadAfter 1 minute at idle More than 10 steps
Revving engine from idle to 3,600
rpm0 step

DTC P0093 FUEL SYSTEM
EC-961
[YD (WITH EURO-OBD)]
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6. REPLACE FUEL PUMP
1. Replace fuel pump.
2. Perform Fuel Pump Learning Value Clearing. Refer to EC-890, "
Fuel Pump Learning Value Clearing" .
>>INSPECTION END
Component InspectionEBS011V0
FUEL RAIL PRESSURE RELIEF VALVE
With CONSULT-II
WARNING:

Confirm that the engine is cooled down and there are no fire hazards near the vehicle.

Prepare pans or saucers under the disconnected fuel line because the fuel may spill out.
1. Turn ignition switch OFF.
2. Remove fuel hose from fuel rail pressure relief valve.
3. Attach a blind cap or plug to removed hose.
4. Turn ignition switch ON.
5. Select “PRES REGULATOR” in “ACTIVE TEST MODE” with
CONSULT-II.
6. Start engine and keep engine speed 2,000 rpm.
7. Raise fuel pressure to 160 MPa with touching “UP” or “Qu” on
the CONSULT-II screen.
8. Confirm that the fuel does not come out from the fuel rail pres-
sure relief valve.
WARNING:

Be careful not to allow leaked fuel to contaminate engine
compartment. Especially, ensure to keep engine mount
insulator clear of fuel.

If the fuel comes out, stop the engine immediately.
Without CONSULT-II
WARNING:

Confirm that the engine is cooled down and there are no fire hazards near the vehicle.

Prepare pans or saucers under the disconnected fuel line because the fuel may spill out.
1. Turn ignition switch OFF.
2. Remove fuel hose from fuel rail pressure relief valve.
3. Attach a blind cap or plug to removed hose.
4. Start engine and keep engine speed more than 4,000 rpm for at
least 5 seconds.
5. Confirm that the fuel does not come out from the fuel rail pres-
sure relief valve.
WARNING:

Be careful not to allow leaked fuel to contaminate engine
compartment. Especially, ensure to keep engine mount
insulator clear of fuel.

If the fuel comes out, stop the engine immediately.
PBIB1941E
PBIB0587E
PBIB1941E

DTC P0101 MAF SENSOR
EC-969
[YD (WITH EURO-OBD)]
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9. CHECK TURBOCHARGER BOOST SENSOR
Refer to EC-1043, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace turbocharger boost sensor.
10. CHECK MASS AIR FLOW SENSOR
Refer to EC-969, "
Component Inspection" .
OK or NG
OK >> GO TO 11.
NG >> Replace mass air flow sensor.
11 . CHECK INTERMITTENT INCIDENT
Refer to EC-936, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS011OK
MASS AIR FLOW SENSOR
1. Reconnect harness connectors disconnected.
2. Start engine and warm it up to normal operating temperature.
3. Check voltage between ECM terminal 54 (Mass air flow sensor
signal) and ground.
4. If the voltage is out of specification, disconnect MAF sensor har-
ness connector and connect it again.
Then repeat above check.
Removal and InstallationEBS011OL
MASS AIR FLOW SENSOR
Refer to EM-133, "AIR CLEANER AND AIR DUCT" .
Condition Voltage V
Ignition switch ON (Engine stopped.) Approx. 0.7
Idle (Engine is warmed up to normal
operating temperature.)1.8 - 2.3
2,000 rpm (Engine is warmed up to nor-
mal operating temperature.)2.5 - 3.0
SEF865T

DTC P0102, P0103 MAF SENSOR
EC-975
[YD (WITH EURO-OBD)]
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5. CHECK MAFS INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between mass air flow sensor terminal 4 and ECM terminal 54. Refer to Wiring
Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK MASS AIR FLOW SENSOR
Refer to EC-975, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace mass air flow sensor.
7. CHECK INTERMITTENT INCIDENT
Refer to EC-936, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS0118G
MASS AIR FLOW SENSOR
1. Reconnect harness connectors disconnected.
2. Start engine and warm it up to normal operating temperature.
3. Check voltage between ECM terminal 54 (Mass air flow sensor
signal) and ground.
4. If the voltage is out of specification, disconnect MAF sensor har-
ness connector and connect it again.
Then repeat above check.
Removal and InstallationEBS0118H
MASS AIR FLOW SENSOR
Refer to EM-133, "AIR CLEANER AND AIR DUCT" . Continuity should exist.
Condition Voltage V
Ignition switch ON (Engine stopped.) Approx. 0.7
Idle (Engine is warmed up to normal
operating temperature.)1.8 - 2.3
2,000 rpm (Engine is warmed up to nor-
mal operating temperature.)2.5 - 3.0
SEF865T

DTC P0401 EGR FUNCTION
EC-1073
[YD (WITH EURO-OBD)]
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DTC P0401 EGR FUNCTIONPFP:14710
DescriptionEBS011OS
SYSTEM DESCRIPTION
*: These signals are sent to the ECM through CAN communication line.
This system controls flow rate of EGR led from exhaust manifold to intake manifold. The opening of the EGR
by-pass passage in the EGR volume control valve changes to control the flow rate. A built-in step motor
moves the valve in steps corresponding to the ECM output pulses. The opening of the valve varies for opti-
mum engine control. The optimum value stored in the ECM is determined by considering various engine con-
ditions.
The EGR volume control valve remains close under the following conditions.

Engine stopped

Engine starting

Low engine coolant temperature

High engine speed

Accelerator pedal fully depressed
COMPONENT DESCRIPTION
EGR Volume Control Valve
The EGR volume control valve uses a step motor to control the flow
rate of EGR from exhaust manifold. This motor has four winding
phases. It operates according to the output pulse signal of the ECM.
Two windings are turned ON and OFF in sequence. Each time an
ON pulse is issued, the valve opens or closes, changing the flow
rate. When no change in the flow rate is needed, the ECM does not
issue the pulse signal. A certain voltage signal is issued so that the
valve remains at that particular opening.
Sensor Input Signal to ECM ECM Function Actuator
Crankshaft position sensor Engine speed
EGR volume con-
trolEGR volume control
valve Vehicle speed sensor* Vehicle speed
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Accelerator pedal position sensor Accelerator pedal position
Mass air flow sensor Amount of intake air
Air conditioner switch
* Air conditioner operation
SEF908Y
SEF411Y

EC-1080
[YD (WITH EURO-OBD)]
DTC P0404 EGR VOLUME CONTROL VALVE

DTC P0404 EGR VOLUME CONTROL VALVEPFP:14710
DescriptionEBS011P6
SYSTEM DESCRIPTION
*: These signals are sent to the ECM through CAN communication line.
This system controls flow rate of EGR led from exhaust manifold to intake manifold. The opening of the EGR
by-pass passage in the EGR volume control valve changes to control the flow rate. A built-in step motor
moves the valve in steps corresponding to the ECM output pulses. The opening of the valve varies for opti-
mum engine control. The optimum value stored in the ECM is determined by considering various engine con-
ditions.
The EGR volume control valve remains close under the following conditions.

Engine stopped

Engine starting

Low engine coolant temperature

High engine speed

Accelerator pedal fully depressed
COMPONENT DESCRIPTION
EGR Volume Control Valve
The EGR volume control valve uses a step motor to control the flow
rate of EGR from exhaust manifold. This motor has four winding
phases. It operates according to the output pulse signal of the ECM.
Two windings are turned ON and OFF in sequence. Each time an
ON pulse is issued, the valve opens or closes, changing the flow
rate. When no change in the flow rate is needed, the ECM does not
issue the pulse signal. A certain voltage signal is issued so that the
valve remains at that particular opening.
Sensor Input Signal to ECM ECM Function Actuator
Crankshaft position sensor Engine speed
EGR volume con-
trolEGR volume control
valve Vehicle speed sensor* Vehicle speed
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Accelerator pedal position sensor Accelerator pedal position
Mass air flow sensor Amount of intake air
Air conditioner switch
* Air conditioner operation
SEF908Y
SEF411Y

EC-1216
[YD (WITHOUT EURO-OBD)]
ENGINE CONTROL SYSTEM

System ChartEBS011WZ
*1: The input signal is sent to the ECM through CAN communication line.
*2: The output signal is sent from the ECM through CAN communication line.
Fuel Injection Control SystemEBS011X0
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 sent to fuel injectors according to the input signals to adjust the amount of fuel injected to
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 fuel rail 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

Fuel rail pressure sensor

Fuel pump temperature sensor

Engine coolant temperature sensor

Mass air flow sensor

Intake air temperature sensor

Crankshaft position sensor

Camshaft position sensor

Turbocharger boost sensor

Vehicle speed sensor*1

ESP/TCS/ABS control unit*1

Ignition switch

Stop lamp switch

Air conditioner switch*1

Park/neutral position switch

Battery voltage

Fuel level switch

Power steering pressure switch Fuel injection control Fuel injector and Fuel pump
Fuel injection timing control Fuel injector and Fuel pump
Fuel cut control Fuel injector and Fuel pump
Glow control system
Glow relay and glow indicator lamp*
2
On board diagnostic system
Malfunction indicator (MI)*2
EGR volume control EGR volume control valve
Cooling fan control Cooling fan relay
Turbocharger boost controlTurbocharger boost control solenoid
valve
Fuel transport pump control Fuel transport pump 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)Fuel injector
Fuel pump Crankshaft position sensor Engine speed
Camshaft position sensor Piston position
Ignition switch Start signal
Fuel rail pressure sensor Fuel rail pressure
SEF648S

BASIC SERVICE PROCEDURE
EC-1221
[YD (WITHOUT EURO-OBD)]
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BASIC SERVICE PROCEDUREPFP:00018
Fuel FilterEBS011X6
DESCRIPTION
A water draining cock is on the lower side and a priming pump for bleeding air is on the upper side.
AIR BLEEDING
Pump the priming pump to bleed air.

When air is bled completely, the pumping of the priming pump
suddenly becomes heavy. Stop the operation at that time.

If it is difficult to bleed air by the pumping of the priming pump
(the pumping of the priming pump does not become heavy), dis-
connect the fuel supply hose between the fuel filter and the fuel
gallery. Then, perform the operation described above, and make
sure that fuel comes out. (Use a pan, etc. so as not to spill fuel.
Do not let fuel get on engine and other parts.) After that, connect
the hose, then bleed air again.

Start engine and let it idle for at least 1 minute after performing
air bleeding.
WATER DRAINING
1. Remove the fuel filter, filter bracket, protector assembly from the dash panel as follows.
a. Remove the air cleaner case (upper), air duct assembly, and vacuum hose for brake booster (between the
vacuum pump and vacuum pipe).
CAUTION:
After the duct is removed, cover the opening with gum tape, etc. to prevent foreign object from
getting into the engine during the operation.
b. Remove the mounting nuts on the dash panel, then remove the fuel filter, filter bracket, and protector
assembly from the dash panel.

It is not necessary to disconnect the fuel hose.
2. Using a tool such as a pliers, loosen the water draining cock at
the bottom of the fuel filter.
Loosening drain cock four to five turns causes water to
start draining.
Do not remove drain cock by loosening it excessively.
If water dose not drain properly, move the priming up and down.
CAUTION:
When the water is drained, the fuel is also drained. Use a
pan, etc. to avoid fuel adherence to the rubber parts such as
the engine mount insulator.
Do not over-tighten the water draining cock. This will dam-
age the cock thread, resulting in water or fuel leak.
3. Bleed air of the fuel filter. Refer to EC-1221, "
AIR BLEEDING" .
4. Start the engine.
Fuel Pump Learning Value ClearingEBS011X7
DESCRIPTION
In order to always keep optimum fuel pressure in fuel rail, the ECM controls fuel pump in high precision with
monitoring the signal of fuel rail pressure sensor.
Accordingly, the ECM always learns characteristic value of fuel pump. Fuel Pump Learning Value Clearing is
an operating to clear the value of the fuel pump learning.
It must be performed after the fuel pump is changed. When the ECM is replaced with brand new one, the Fuel
Pump Learning Value Clearing is not necessary to be performed. If the ECM to be replaced has the possibility
of learning the characteristic value of fuel pump, the Fuel Pump Learning Value Clearing is necessary to be
performed after the ECM has been replaced.
OPERATION PROCEDURE
NOTE:
Remove fuel pump without starting engine after performing Fuel Pump Learning Value Clearing.
PBIB1932E
SMA825B