2001 NISSAN X-TRAIL sensor

DTC P0340 CMP SENSOR (PHASE)
EC-965
[QR20(WITH EURO-OBD)]
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Diagnostic ProcedureEBS00MXM
1.CHECK STARTING SYSTEM
Turn ignition switch to “START” position.
Ye s o r N o
Ye s > > G O T O 2 .
No >> Check starting system. (Refer to SC-20, "
STARTING SYSTEM" .)
2.RETIGHTEN GROUND SCREWS
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
>> GO TO 3.
3.CHECK CAMSHAFT POSITION (CMP) SENSOR (PHASE) POWER SUPPLY CIRCUIT
1. Disconnect camshaft position (CMP) sensor (PHASE) harness
connector.
2. Turn ignition switch "ON".
3. Check voltage between CMP sensor (PHASE) terminal 1 and
ground with CONSULT-II or tester.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.Does the engine turn over?
Does the starter motor operate?
PBIB0494E
PBIB0496E
Voltage: Battery voltage
PBIB0664E

EC-966
[QR20(WITH EURO-OBD)]
DTC P0340 CMP SENSOR (PHASE)
4. DETECT MALFUNCTIONING PART
Check the following.
●Harness for open or short between ECM and camshaft position sensor (PHASE)
●Harness for open or short between ECM relay and camshaft position sensor (PHASE)
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK CMP SENSOR (PHASE) GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch "OFF".
2. Check harness continuity between CMP sensor (PHASE) terminal 3 and engine ground.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to power in harness or connectors.
6. CHECK CMP SENSOR (PHASE) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 63 and CMP sensor (PHASE) terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground or short to power.
OK or NG
OK >> GO TO 7.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to EC-967, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace camshaft position sensor (PHASE).
8. CHECK CAMSHAFT (INTAKE)
Check the following.
●Accumulation of debris to the signal plate of camshaft rear end
●Chipping signal plate of camshaft rear end
OK or NG
OK >> GO TO 9.
NG >> Remove debris and clean the signal plate of camshaft
rear end or replace camshaft.
9. CHECK INTERMITTENT INCIDENT
Refer to EC-847, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.
Continuity should exist.
PBIB0565E

DTC P0340 CMP SENSOR (PHASE)
EC-967
[QR20(WITH EURO-OBD)]
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Component InspectionEBS00MXN
CAMSHAFT POSITION SENSOR (PHASE)
1. Loosen the fixing bolt of the sensor.
2. Disconnect camshaft position sensor (PHASE) harness connec-
tor.
3. Remove the sensor.
4. Visually check the sensor for chipping.
5. Check resistance as shown in the figure.
Removal and InstallationEBS00MXO
CAMSHAFT POSITION SENSOR (PHASE)
Refer to EM-46, "CAMSHAFT" .
PBIB0563E
Terminal No. (Polarity) Resistance Ω [at 25°C (77°F)]
1 (+) - 2 (-)
Except 0 or ∞ 1 (+) - 3 (-)
2 (+) - 3 (-)
PBIB0564E

EC-968
[QR20(WITH EURO-OBD)]
DTC P0420 THREE WAY CATALYST FUNCTION
DTC P0420 THREE WAY CATALYST FUNCTION
PFP:20905
On Board Diagnosis LogicEBS00MXP
The ECM monitors the switching frequency ratio of heated oxygen
sensors 1 and 2.
A three way catalyst (Manifold) with high oxygen storage capacity
will indicate a low switching frequency of heated oxygen sensor 2.
As oxygen storage capacity decreases, the heated oxygen sensor 2
switching frequency will increase.
When the frequency ratio of heated oxygen sensors 1 and 2
approaches a specified limit value, the three way catalyst (Manifold)
malfunction is diagnosed.
DTC Confirmation ProcedureEBS00MXQ
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF” and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
TESTING CONDITION:
●Open engine hood before conducting the following procedure.
●Do not hold engine speed for more than the specified minutes below.
1. Turn ignition switch “ON”.
2. Select “DTC & SRT CONFIRMATION” then “SRT WORK SUP-
PORT” mode with CONSULT-II.
3. Start engine.
4. Rev engine up to 2,000 to 3,000 rpm and hold it for 3 consecu-
tive minutes then release the accelerator pedal completely.
If “INCMP” of “CATALYST” changed to “COMPLT”, go to step 7
5. Wait 5 seconds at idle.
SEF484YF
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0420
0420Catalyst system effi-
ciency below threshold
●Three way catalyst (Manifold) does not oper-
ate properly.
●Three way catalyst (Manifold) does not have
enough oxygen storage capacity.
●Three way catalyst (Manifold)
●Exhaust tube
●Intake air leaks
●Fuel injectors
●Fuel injector leaks
●Spark plug
●Improper ignition timing
PBIB0566E

DTC P0420 THREE WAY CATALYST FUNCTION
EC-969
[QR20(WITH EURO-OBD)]
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6. Rev engine up to 2,000 to 3,000 rpm and maintain it until
“INCMP” of “CATALYST” changes to “CMPLT” (It will take
approximately 5 minutes).
If not “CMPLT”, stop engine and cool it down to less than 70°C
(158°F) and then retest from step 1.
7. Select “SELF-DIAG RESULTS” mode with CONSULT-II.
8. Confirm that the 1st trip DTC is not detected.
If the 1st trip DTC is detected, go to EC-970, "
Diagnostic Proce-
dure" .
Overall Function CheckEBS00MXR
Use this procedure to check the overall function of the three way catalyst (Manifold). During this check, a DTC
might not be confirmed.
CAUTION:
Always drive vehicle at a safe speed.
WITH GST
1. Start engine and drive vehicle at a speed of more than 70 km/h (43 MPH) for 2 consecutive minutes.
2. Stop vehicle with engine running.
3. Set voltmeters probes between ECM terminal 92 (HO2S1 sig-
nal) and engine ground, and ECM terminal 95 (HO2S2 signal)
and engine ground.
4. Keep engine speed at 2,000 rpm constant under no load.
5. Make sure that the voltage switching frequency (high & low)
between ECM terminal 95 and engine ground is very less than
that of ECM terminal 92 and engine ground.
Switching frequency ratio = A/B
A: Heated oxygen sensor 2 voltage switching frequency
B: Heated oxygen sensor 1 voltage switching frequency
This ratio should be less than 0.75.
If the ratio is greater than above, it means three way catalyst
(manifold) does not operate properly. Go to EC-970, "
Diagnostic
Procedure" .
NOTE:
If the voltage at terminal 92 does not switch periodically more than 5
times within 10 seconds at step 5, perform trouble diagnosis for “DTC P0133” first. (See EC-905
.)
PBIB0567E
SEF535Z
PBIB0543E
PBIB0550E

EC-970
[QR20(WITH EURO-OBD)]
DTC P0420 THREE WAY CATALYST FUNCTION
Diagnostic Procedure
EBS00MXS
1. CHECK EXHAUST SYSTEM
Visually check exhaust tubes and muffler for dent.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace.
2. CHECK EXHAUST GAS LEAK
1. Start engine and run it at idle.
2. Listen for an exhaust gas leak before the three way catalyst (Manifold).
OK or NG
OK >> GO TO 3.
NG >> Repair or replace.
3. CHECK INTAKE AIR LEAK
Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace.
4. CHECK IGNITION TIMING
Check the following items. Refer to EC-805, "
Basic Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Follow the “Basic Inspection”.
SEC502D
Items Specifications
Ignition timingA/T 16°± 5° BTDC (in “P” or “N” position)
M/T 14°± 5° BTDC
Target idle speedA/T 700 ± 50 rpm (in “P” or “N” position)
M/T 650 ± 50 rpm

EC-972
[QR20(WITH EURO-OBD)]
DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VA LV E
PFP:14920
DescriptionEBS00MXT
SYSTEM DESCRIPTION
This system controls flow rate of fuel vapor from the EVAP canister. The opening of the vapor by-pass pas-
sage in the EVAP canister purge volume control solenoid valve changes to control the flow rate. The EVAP
canister purge volume control solenoid valve repeats ON/OFF operation according to the signal sent from the
ECM. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is
determined by considering various engine conditions. When the engine is operating, the flow rate of fuel vapor
from the EVAP canister is regulated as the air flow changes.
COMPONENT DESCRIPTION
The EVAP canister purge volume control solenoid valve uses a ON/
OFF duty to control the flow rate of fuel vapor from the EVAP canis-
ter. The EVAP canister purge volume control solenoid valve is
moved by ON/OFF pulses from the ECM. The longer the ON pulse,
the greater the amount of fuel vapor that will flow through the valve.
CONSULT-II Reference Value in Data Monitor ModeEBS00MXU
Specification data are reference values.
ECM Terminals and Reference ValueEBS00MXV
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II
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.
Sensor Input Signal to ECMECM func-
tionActuator
Crankshaft position sensor (POS) Engine speed
EVAP can-
ister purge
flow con-
trolEVAP canister purge volume
control solenoid valve Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Throttle position sensor Throttle position
Accelerator pedal position sensor Closed throttle position
Heated oxygen sensor 1Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Vehicle speed sensor Vehicle speed
SEF337U
MONITOR ITEM CONDITION SPECIFICATION
PURG VOL C/V
●Engine: After warming up
●Shift lever: N
●Air conditioner switch: OFF
●No-loadIdle 0%
2,000 rpm 20 - 30%

EC-978
[QR20(WITH EURO-OBD)]
DTC P0500 VSS
DTC P0500 VSS
PFP:32702
Component DescriptionEBS00MY2
The vehicle speed signal is sent to the combination meter from the ESP/TCS/ABS control unit (with ESP mod-
els), 4WD/ABS control unit (without ESP models). The combination meter then sends a signal to the ECM.
ECM Terminals and Reference ValueEBS00MY3
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II
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 LogicEBS00MY4
DTC Confirmation ProcedureEBS00MY5
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF” and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a
road test is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1. Start engine.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
81 L/B Vehicle speed sensor[Engine is running]
●Lift up the vehicle
●Vehicle speed is 40 km/h (25MPH)Approximately 2.3V
PBIB0531E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0500
0500Vehicle speed sensorThe almost 0 km/h (0 MPH) signal from
combination meter is sent to ECM even
when vehicle is being driven.
●Harness or connectors
(The sensor circuit is open or shorted)
●Wheel sensor
●ESP/TCS/ABS control unit (with ESP models)
●4WD/ABS control unit (without ESP models)
●Combination meter