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![INFINITI FX35 2005 Service Manual EC-1232
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DTC P1229 SENSOR POWER SUPPLY
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3. CHECK SENSOR POWER SUPPLY CIRCUITS
Check harness for short to power and short to ground, between the following terminals. INFINITI FX35 2005 Service Manual EC-1232
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DTC P1229 SENSOR POWER SUPPLY
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3. CHECK SENSOR POWER SUPPLY CIRCUITS
Check harness for short to power and short to ground, between the following terminals.](/manual-img/42/57020/w960_57020-2624.png)
EC-1232
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DTC P1229 SENSOR POWER SUPPLY
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3. CHECK SENSOR POWER SUPPLY CIRCUITS
Check harness for short to power and short to ground, between the following terminals.
OK or NG
OK >> GO TO 4.
NG >> Repair short to ground or short to power in harness or connectors.
4. CHECK COMPONENTS
Check the following.
EVAP control system pressure sensor (Refer to EC-1091, "Component Inspection" .)
Refrigerant pressure sensor (Refer to AT C - 9 0 , "COMPONENT INSPECTION" .)
Power steering pressure sensor (Refer to EC-1133, "Component Inspection" .)
OK or NG
OK >> GO TO 7.
NG >> Replace malfunctioning component.
5. CHECK APP SENSOR
Refer to EC-1307, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Perform EC-786, "
Accelerator Pedal Released Position Learning" .
3. Perform EC-786, "
Throttle Valve Closed Position Learning" .
4. Perform EC-787, "
Idle Air Volume Learning" .
>> INSPECTION END
7. CHECK INTERMITTENT INCIDENT
Refer to EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
ECM terminal Sensor terminal Reference Wiring Diagram
90 APP sensor terminal 6 EC-1304
48 EVAP control system pressure sensor terminal 3EC-1088
49 Refrigerant pressure sensor terminal 1EC-1365
68 PSP sensor terminal 1 EC-1130
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![INFINITI FX35 2005 Service Manual DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE EC-1233
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DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID V INFINITI FX35 2005 Service Manual DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE EC-1233
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DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID V](/manual-img/42/57020/w960_57020-2625.png)
DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE EC-1233
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DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
PFP:14920
DescriptionABS007TJ
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 ModeABS007TK
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 —
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![INFINITI FX35 2005 Service Manual EC-1234
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DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
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On Board Diagnosis LogicABS007TL
DTC Confirmation ProcedureABS007TM
NOTE:
If DTC Confirmation INFINITI FX35 2005 Service Manual EC-1234
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On Board Diagnosis LogicABS007TL
DTC Confirmation ProcedureABS007TM
NOTE:
If DTC Confirmation](/manual-img/42/57020/w960_57020-2626.png)
EC-1234
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DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
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On Board Diagnosis LogicABS007TL
DTC Confirmation ProcedureABS007TM
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:
Always perform test at a temperature of 5 °C (41 °F) or more.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Select “PURG VOL CN/V P1444” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with CONSULT-II.
5. Touch “START”.
6. Start engine and let it idle until “TESTING” on CONSULT-II changes to “COMPLETED”. (It will take approximately 10 seconds.)
If “TESTING” is not displayed after 5 minutes, retry from step 2.
7. Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to EC-
1237, "Diagnostic Procedure" .
WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and let it idle for at least 20 seconds.
4. Select “Service $07” with GST.
5. If 1st trip DTC is detected, go to EC-1237, "
Diagnostic Procedure" .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1444
1444 EVAP canister purge
volume control solenoid
valve The canister purge flow is detected during the
specified driving conditions, even when EVAP
canister purge volume control solenoid valve is
completely closed.
EVAP control system pressure sensor
EVAP canister purge volume control
solenoid valve
(The valve is stuck open.)
EVAP canister vent control valve
EVAP canister
Hoses
(Hoses are connected incorrectly or
clogged.)
PBIB0839E
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DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE EC-1235
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Wiring DiagramABS007TN
TBWM0414E
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![INFINITI FX35 2005 Service Manual EC-1236
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DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
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Specification data are reference values and are measured between each terminal and ground.
Pul INFINITI FX35 2005 Service Manual EC-1236
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Specification data are reference values and are measured between each terminal and ground.
Pul](/manual-img/42/57020/w960_57020-2628.png)
EC-1236
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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.) TER-
MINAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
45 W EVAP canister purge vol-
ume control solenoid valve [Engine is running]
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Engine speed: About 2,000 rpm (More than
100 seconds after starting engine) 11 - 14V
111 W / B ECM relay
(Self shut-off) [Engine is running]
[Ignition switch: OFF]
For a few seconds after turning ignition
switch OFF 0 - 1.5V
[Ignition switch: OFF]
More than a few seconds after turning igni-
tion switch OFF BATTERY VOLTAGE
(11 - 14V)
11 9
120 R
R Power supply for ECM
[Ignition switch: ON] BATTERY VOLTAGE
(11 - 14V)
PBIB0050E
PBIB0051E
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Diagnostic ProcedureABS007TO
1. CHECK EVAP CANISTER PUR INFINITI FX35 2005 Service Manual DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE EC-1237
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Diagnostic ProcedureABS007TO
1. CHECK EVAP CANISTER PUR](/manual-img/42/57020/w960_57020-2629.png)
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Diagnostic ProcedureABS007TO
1. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIR-
CUIT
1. Turn ignition switch OFF.
2. Disconnect EVAP canister purge volume control solenoid valve harness connector.
3. Turn ignition switch ON.
4. Check voltage between EVAP canister purge volume control solenoid valve terminal 1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E211, M41
Harness connectors M82, F102
IPDM E/R harness connector E7
Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R
Harness for open or short between EVAP canister purge volume control solenoid valve and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
3. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIR-
CUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 45 and EVAP canister purge volume control solenoid valve terminal 2. Refer to Wiring Diagram.
4. 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.
PBIB1478E
Voltage: Battery voltage
PBIB0148E
Continuity should exist.
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![INFINITI FX35 2005 Service Manual EC-1238
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DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
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4. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1. Disconnect EVAP control system press INFINITI FX35 2005 Service Manual EC-1238
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4. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1. Disconnect EVAP control system press](/manual-img/42/57020/w960_57020-2630.png)
EC-1238
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DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
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4. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1. Disconnect EVAP control system pressure sensor harness connector.
2. Check connectors for water.
OK or NG
OK >> GO TO 5.
NG >> Replace EVAP control system pressure sensor.
5. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to EC-1091, "
Component Inspection" .
OK or NG
OK (With CONSULT-II)>>GO TO 6.
OK (Without CONSULT-II)>>GO TO 7.
NG >> Replace EVAP control system pressure sensor.
6. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT-II
1. Turn ignition switch OFF.
2. Reconnect harness connectors disconnected.
3. Start engine.
4. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II. Check that engine speed varies according to the
valve opening.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to EC-1240, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace EVAP canister purge volume control solenoid valve.
8. CHECK RUBBER TUBE FOR CLOGGING
1. Disconnect rubber tube connected to EVAP canister vent control valve.
2. Check the rubber tube for clogging.
OK or NG
OK >> GO TO 9.
NG >> Clean the rubber tube using an air blower.
9. CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to EC-1081, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace EVAP canister vent control valve. Water should not exist.
PBIB0147E
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10. CHECK IF EVAP CANISTER SATURATED WITH WATER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached.
2. Check if water will drain from the EVAP canister.
Ye s o r N o
Ye s > > G O T O 11 .
No >> GO TO 13.
11 . CHECK EVAP CANISTER
Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.1 kg (4.6 lb).
OK or NG
OK >> GO TO 13.
NG >> GO TO 12.
12. DETECT MALFUNCTIONING PART
Check the following.
EVAP canister for damage
EVAP hose between EVAP canister and vehicle frame for clogging or poor connection
>> Repair hose or replace EVAP canister.
13. CHECK INTERMITTENT INCIDENT
Refer to EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
PBIB1031E