2003 NISSAN X-TRAIL check engine

EC-726
[YD]
DTC P0190 COMMON RAIL FUEL PRESSURE SENSOR
4.CHECK COMMON RAIL FUEL PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND
SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals B13, B14 and common rail fuel pressure sensor termi-
nal 2. Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness connectors.
5.CHECK COMMON RAIL FUEL PRESSURE SENSOR
Refer toEC-726, "
Component Inspection".
OK or NG
OK >> GO TO 6.
NG >> Replace common rail.
6.CHECK INTERMITTENT INCIDENT
Refer toEC-699, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END
Component InspectionEBS004RI
COMMON RAIL FUEL PRESSURE SENSOR
1. Reconnect harness connector disconnected.
2. Start engine and warm it up to normal operating temperature.
3. Check voltage between ECM terminals B13, B14 (Common rail
fuel pressure sensor signal) and ground under the following con-
ditions.
4. If the voltage is out of specification, disconnect common rail fuel
pressure sensor harness connector and connect it again. Then
repeat above check.
5. If NG, replace common rail.
Removal and InstallationEBS008YJ
COMMON RAIL
Refer toEM-135, "INJECTION TUBE AND FUEL INJECTOR". Continuity should exist.
Condition Voltage V
Idle 1.6 - 1.8
2,000 rpm 1.8 - 2.0
PBIB0588E

EC-728
[YD]
DTC P0201 - P0204 FUEL INJECTOR
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS008X3
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
A1
A2
A3
A4L/W
Y/PU
PU
YEDU drive No. 2
EDU drive No. 4
EDU drive No. 3
EDU drive No. 1[Engine is running]
lWarm-up condition
lIdle speed0-4V
[Engine is running]
lWarm-up condition
lEngine speed is 2,000 rpm0-4V
A8
A9R
RPower supply for ECM[Ignition switch "ON"]BATTERY VOLTAGE
(11 - 14V)
A29 W/PU EDU injector check signal[Engine is running]
lWarm-up condition
lIdle speed1-5V
[Engine is running]
lWarm-up condition
lEngine speed is 2,000 rpm1-5V
D24
D26G
GECM relay (self-shutoff)[Ignition switch “ON”]
[Ignition switch “OFF”]
lFor a few seconds after turning ignition
switch "OFF"Approximately 0V
[Ignition switch “OFF”]
lA few seconds passed after turning ignition
switch "OFF"BATTERY VOLTAGE
(11 - 14V)
PBIB0387E
PBIB0388E
PBIB0391E
PBIB0392E
DTC Malfunction is detected when .... Check Items (Possible cause)
P0201
lInjector No.1 does not operate normally.lHarness or connectors
(Injector circuit is open or shorted.)
lElectronic drive unit
lFuel injector P0202
lInjector No.2 does not operate normally.
P0203
lInjector No.3 does not operate normally.
P0204
lInjector No.4 does not operate normally.

DTC P0201 - P0204 FUEL INJECTOR
EC-733
[YD]
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3.CHECK FUEL INJECOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity fuel injector terminal 3 of malfunctioning cylinder and EDU terminal 13.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK FUEL INJECTOR-I
Refer toEC-733, "
Component Inspection".
OK or NG
OK >> GO TO 5.
NG >> Replace fuel injector.
5.CHECK FUEL INJECTOR-II
1. Remove two fuel injectors of malfunctioning cylinder and another cylinder.
2. Install fuel injectors to different cylinder.
3. Reconnect ECM harness connector, EDU harness connector and fuel injector harness connector.
4. Erase DTC. Refer toEC-666, "
HOW TO ERASE DTC".
5. Select "DATA MONITOR" mode with CONSULT-II.
6. Start engine and warm it up to the normal operating temperature.
7. Check DTC.
Same DTC is detected. >>Replace EDU.
Another DTC is detected. >>Replace fuel injector of malfunctioning cylinder.
No DTC is detected. >>GO TO 6.
6.CHECK INTERMITTENT INCIDENT
Refer toEC-699, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END
Component InspectionEBS008YK
FUEL INJECTOR
1. Disconnect fuel injector.
2. Check continuity between terminals as shown in the figure.
3. If NG, replace fuel injector.
Removal and InstallationEBS008YL
FUEL INJECTOR
Refer toEM-135, "INJECTION TUBE AND FUEL INJECTOR". Continuity should exist.
Continuity should exist.
PBIB0406E

DTC P0335 CRANKSHAFT POSISTION SENSOR (TDC)
EC-735
[YD]
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On Board Diagnosis LogicEBS004RT
DTC Confirmation ProcedureEBS004RU
Before performing the following procedure, confirm that battery voltage is more than 10V.
WITH CONSULT-II
1. Turn ignition switch “ON” and select “DATA MONITOR” mode
with CONSULT-II.
2. Crank engine for at least 1 second.
3. Start engine and run it for at least 2 seconds at idle speed.
4. If DTC is detected, go toEC-737, "
Diagnostic Procedure".
DTC Malfunction is detected when ... Check Items (Possible Cause)
P0335
lAn improper voltage signal from the sensor is sent
to ECM during running and cranking.lHarness or connectors
(The sensor circuit is open or shorted.)
lCrankshaft position sensor (TDC)
SEF817Y

DTC P0335 CRANKSHAFT POSISTION SENSOR (TDC)
EC-737
[YD]
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Diagnostic ProcedureEBS004RW
1.CHECK CRANKSHAFT POSITION SENSOR (TDC) GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
3. Disconnect crankshaft position sensor (TDC) harness connector
and ECM harness connector.
4. Check harness continuity between ECM terminal B20 and
crankshaft position sensor (TDC) terminal 1. Refer to Wiring
Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 2.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
2.CHECK CRANKSHAFT POSITION SENSOR (TDC) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between crankshaft position sensor (TDC) terminal 2 and ECM terminal B21.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK CRANKSHAFT POSITION SENSOR (TDC)
Refer toEC-737, "
Component Inspection".
OK or NG
OK >> GO TO 4.
NG >> Replace crankshaft position sensor (TDC).
4.CHECK INTERMITTENT INCIDENT
Refer toEC-699, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END
Component InspectionEBS008YW
CRANKSHAFT POSITION SENSOR(TDC)
1. Loosen the fixing bolt of the sensor.
PBIB0385E
Continuity should exist.
PBIB0416E
Continuity should exist.

DTC P0340 CAMSHAFT POSITION SENSOR
EC-739
[YD]
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DTC P0340 CAMSHAFT POSITION SENSORPFP:23731
DescriptionEBS008YN
The camshaft position sensor identifies a particular cylinder by
means of signals from the sensing plate (with five protrusions)
installed to the camshaft. The datum signal output is detected 90°
signal and sent to the ECM. The sensor signal is used for fuel injec-
tion control and fuel injection timing control.
ECM Terminals and Reference ValueEBS008YP
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.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS008YQ
DTC Confirmation ProcedureEBS008YR
Before performing the following procedure, confirm that battery voltage is more than 10V.
PBIB0367E
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA(DC Voltage and Pulse Sig-
nal)
B18 R/GCamshaft position sensor
ground[Engine is running]
lWarm-up condition
lIdle speedApproximately 0V
B19 R/Y Camshaft position sensor[Engine is running]
lWarm-up condition
lIdle speed0-3V
[Engine is running]
lWarm-up condition
lEngine speed is 2,000 rpm0-3V
PBIB0393E
PBIB0394E
DTC Malfunction is detected when ... Check Items (Possible Cause)
P0340
lAn improper voltage signal from the sensor is send
to ECM during running and cranking.lHarness or connectors
(The sensor circuit is open or shorted.)
lCamshaft position sensor

EC-742
[YD]
DTC P0340 CAMSHAFT POSITION SENSOR
Diagnostic Procedure
EBS008YT
1.CHECK CAMSHAFT POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
3. Disconnect camshaft position sensor harness connector and
ECM harness connector.
4. Check harness continuity between ECM terminal B18 and cam-
shaft position sensor terminal 1. Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 2.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
2.CHECK CAMSHAFT POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between camshaft position sensor terminal 2 and ECM terminal B19. Refer to
Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK CAMSHAFT POSITION SENSOR
Refer toEC-742, "
Component Inspection".
OK or NG
OK >> GO TO 4.
NG >> Replace camshaft position sensor.
4.CHECK INTERMITTENT INCIDENT
Refer toEC-699, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END
Component InspectionEBS008YU
CAMSHAFT POSITION SENSOR
1. Loosen the fixing bolt of the sensor.
PBIB0385E
Continuity should exist.
PBIB0381E
Continuity should exist.

EC-744
[YD]
DTC P0500 VEHICLE SPEED SENSOR (VSS)
DTC P0500 VEHICLE SPEED SENSOR (VSS)
PFP:32702
DescriptionEBS004QL
The vehicle speed signal is sent to the combination meter from the 4WD/ABS control unit. The combination
meter then sends a signal to the ECM.
ECM Terminals and Reference ValueEBS004QM
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.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS004QN
Overall Function CheckEBS004QO
Use this procedure to check the overall function of the vehicle speed sensor circuit. During this check, a DTC
might not be confirmed.
WITH CONSULT-II
1. Lift up the vehicle.
2. Start engine.
3. Read vehicle speed sensor signal by oscilloscope under the fol-
lowing conditions.
lIn 2nd gear position.
lVehicle speed is 30km/h (19MPH)
The oscilloscope should indicate the almost same signal
wave as that shown in the "ECM Terminals and Reference
Value".
4. If NG, go toEC-747, "
Diagnostic Procedure".
TER-
MINAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
E21 L/B Vehicle speed sensor[Engine is running]
lLift up the vehicle
lIn 2nd gear position
lVehicle speed is 30 km/h (19 MPH)0-5V
PBIB0386E
DTC Malfunction is detected when .... Check Items (Possible Cause)
P0500
lThe almost 0 km/h (0 MPH) signal from vehicle
speed sensor is sent to ECM even when vehicle is
being driven.
lAn excessively high voltage from the sensor is send
to ECM
lHarness or connectors
(The sensor circuit is open or shorted.)
lVehicle speed sensor
lCombination meter
l4WD/ABS control unit
SEF864Y