2005 INFINITI FX35 Service Manual

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Page 2457 of 4731

INFINITI FX35 2005 Service Manual EC-1064
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DTC P0442 EVAP CONTROL SYSTEM
Revision: 2005 July 2005 FX
5. INSTALL THE PRESSURE PUMP
To locate the EVAP leak, install EVAP service port adapter and pres-
sure pump to EVAP service

Page 2458 of 4731

INFINITI FX35 2005 Service Manual DTC P0442 EVAP CONTROL SYSTEM EC-1065
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Revision: 2005 July 2005 FX
7. CHECK FOR EVAP LEAK
Without CONSULT-II
1. Turn ignition switch OFF.
2. Apply

Page 2459 of 4731

INFINITI FX35 2005 Service Manual EC-1066
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DTC P0442 EVAP CONTROL SYSTEM
Revision: 2005 July 2005 FX
9. CHECK IF EVAP CANISTER SATURATED WITH WATER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP contro

Page 2460 of 4731

INFINITI FX35 2005 Service Manual DTC P0442 EVAP CONTROL SYSTEM EC-1067
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13. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
Without CON

Page 2461 of 4731

INFINITI FX35 2005 Service Manual EC-1068
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DTC P0442 EVAP CONTROL SYSTEM
Revision: 2005 July 2005 FX
20. CHECK EVAP/ORVR LINE
Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kink, looseness and improper

Page 2462 of 4731

INFINITI FX35 2005 Service Manual DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-1069
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Revision: 2005 July 2005 FX
DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CO

DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
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Revision: 2005 July 2005 FX
DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VA LV E
PFP:14920
DescriptionABS007NY
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 ModeABS007NZ
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 control EVAP canister purge vol-
ume 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 Accelerator pedal position
Heated oxygen sensor 1 Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Fuel tank temperature sensor Fuel temperature in fuel tank
Wheel sensor*
2Vehicle speed
SEF337U
MONITOR ITEM CONDITION SPECIFICATION
PURG VOL C/V
Engine: After warming up
Selector lever: P or N
Air conditioner switch: OFF
No load Idle 0%
2,000 rpm —

Page 2463 of 4731

INFINITI FX35 2005 Service Manual EC-1070
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DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Revision: 2005 July 2005 FX
On Board Diagnosis LogicABS007O0
DTC Confirmation ProcedureABS007O1
NOTE:
If DTC Conf

Page 2464 of 4731

INFINITI FX35 2005 Service Manual DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-1071
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Revision: 2005 July 2005 FX
Wiring DiagramABS007O2
TBWM0414E

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