2003 NISSAN X-TRAIL Electronic Repair Manual

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Page 1345 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual DTC P0420 THREE WAY CATALYST FUNCTION
EC-231
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Diagnostic ProcedureEBS00B6D
1.CHECK EXHAUST SYSTEM
Visually check exhaust tubes and muffler for dent.
OK or

Page 1346 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EC-232
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DTC P0420 THREE WAY CATALYST FUNCTION
5.CHECK INJECTORS
1. Refer to Wiring Diagram for Injectors,EC-344
.
2. Stop engine and then turn ignition switch “ON”.
3. Check vo

Page 1347 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
EC-233
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DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VA LV E
PFP:14920

DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
EC-233
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DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VA LV E
PFP:14920
DescriptionEBS00B6E
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 ModeEBS00B6F
Specification data are reference values.
ECM Terminals and Reference ValueEBS00B6G
Specification data are reference values and are measured between each terminal and body 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.
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 sensors 1Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Vehicle speed sensor Vehicle speed
SEF337U
MONITOR ITEM CONDITION SPECIFICATION
PURG VOL C/V
lEngine: After warming up
lShiftlever:N
lAir conditioner switch: OFF
lNo-loadIdle 0%
2,000 rpm 20 - 30%

Page 1348 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EC-234
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DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagn

Page 1349 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
EC-235
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Wiring DiagramEBS00B6J
TBWA0067E

Page 1350 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EC-236
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DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
Diagnostic Procedure
EBS00B6K
1.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIR-

Page 1351 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
EC-237
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4.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSUL

Page 1352 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EC-238
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DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
Removal and Installation
EBS00B6M
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer toEM-17, "INTAK

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