2003 NISSAN X-TRAIL Service Repair Manual

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Page 641 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0420 THREE WAY CATALYST FUNCTION
EC-263
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7. Make sure that the voltage switching frequency (high & low)
between ECM terminal 16 and ground is very

Page 642 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-264
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DTC P0420 THREE WAY CATALYST FUNCTION

OK or NG
OK >> GO TO 5.
NG >> Follow the EC-79, "
Basic Inspection" .
5. CHECK INJECTORS
1. Refer to Wiring Diagram for Injectors, E

Page 643 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
EC-265
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DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VA LV E
PFP:149

DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
EC-265
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DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VA LV E
PFP:14920
DescriptionEBS010QC
SYSTEM DESCRIPTION
*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM through CAN communication line.
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 ModeEBS010QD
Specification data are reference values.
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
1
EVAP canister
purge flow controlEVAP canister purge volume
control solenoid valve Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Battery
Battery voltage*1
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)
Wheel sensor*
2Vehicle speed
SEF337U
MONITOR ITEM CONDITION SPECIFICATION
PURG VOL C/V
Engine: After warming up
Shift lever: N (A/T), Neutral (M/T)
Air conditioner switch: OFF
No loadIdle 0%
2,000 rpm 20 - 30%

Page 644 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-266
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DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE

On Board Diagnosis LogicEBS010QE
DTC Confirmation ProcedureEBS010QF
NOTE:
If DTC Confirmation Procedur

Page 645 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
EC-267
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Wiring DiagramEBS010QG
TBWA0609E

Page 646 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-268
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DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE

Specification data are reference values and are measured between each terminal and ground.
Pulse signa

Page 647 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
EC-269
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Diagnostic ProcedureEBS010QH
1. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOL

Page 648 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-270
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DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE

3. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIR-
CUIT FOR OPEN AND SHORT

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