engine INFINITI FX35 2008 Service Manual

DTC P0441 EVAP CONTROL SYSTEMEC-337
< SERVICE INFORMATION > [VQ35DE]
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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 70 seconds.
4. Select “PURG FLOW P0441” of “EVAPORATIVE
SYSTEM” in “DTC CONFIRMATION” mode with CON-
SULT-III.
5. Touch “START”.
If “COMPLETED” is displayed, go to step 7.
6. When the following conditions are met, “TESTING ” will be displayed on the CONSULT-III screen. Maintain
the conditions continuously until “TES TING” changes to “COMPLETED”. (It will take at least 35 seconds.)
If “TESTING” is not changed for a long time, retry from step 2.
7. Make sure that “OK” is displayed after touching “S ELF-DIAG RESULTS”. If “NG” is displayed, refer to EC-
337, "Diagnosis Procedure".
Overall Function CheckINFOID:0000000001326164
Use this procedure to check the overall monitoring func tion of the EVAP control system purge flow monitoring.
During this check, a 1st trip DTC might not be confirmed.
WITH GST
1. Lift up drive wheels.
2. Start engine (TCS switch or VDC switch OFF) and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and wait at least 70 seconds.
5. Set voltmeter probes to ECM te rminals 32 (EVAP control system
pressure sensor signal) and ground.
6. Check EVAP control system pressure sensor value at idle speed and note it.
7. Establish and maintain the following conditions for at least 1
minute.
8. Verify that EVAP control system pressure sensor value stays 0.1V less than the value at idle speed (mea-
sured at step 6) for at least 1 second.
9. If NG, go to EC-337, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001326165
1.CHECK EVAP CANISTER
1. Turn ignition switch OFF.
2. Check EVAP canister for cracks.
OK or NG
OK (With CONSULT-III)>>GO TO 2.
OK (Without CONSULT-III)>>GO TO 3.
NG >> Replace EVAP canister.
2.CHECK PURGE FLOW
Selector lever Suitable position
VHCL SPEED SE 32 - 120 km/h (20 - 75 MPH)
ENG SPEED 500 - 3,000 rpm
B/FUEL SCHDL 1.3 - 9.0 msec
COOLAN TEMP/S 70 - 100 °C (158 - 212 °F)
Air conditioner switch ON
Headlamp switch ON
Rear window defogger switch ON
Engine speed Approx. 3,000 rpm
Selector lever Any position other than P, N or R
PBIB1109E
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EC-338
< SERVICE INFORMATION >[VQ35DE]
DTC P0441 EVAP CONTROL SYSTEM

With CONSULT-III
1. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP ser-
vice port and install vacuum gauge. For the location of EVAP service port, refer to EC-40, "
Description".
2. Start engine and let it idle.
3. Select “PURG VOL CONT/V” in “A CTIVE TEST” mode with CONSULT-III.
4. Rev engine up to 2,000 rpm.
5. Touch “Qd” and “Qu” on CONSULT-III screen to adjust “PURG VOL CONT/V” opening and check vacuum
existence.
OK or NG
OK >> GO TO 7.
NG >> GO TO 4.
3.CHECK PURGE FLOW
Without CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Stop engine.
3. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP ser-
vice port and install vacuum gauge. For the location of EVAP service port, refer to EC-40, "
Description".
4. Start engine and let it idle.
Do not depress accelerator pedal even slightly.
5. Check vacuum gauge indication before 60 seconds passed after starting engine.
6. Revving engine up to 2,000rpm after 100 seconds passed after starting engine.
OK or NG
OK >> GO TO 7.
NG >> GO TO 4.
4.CHECK EVAP PURGE LINE
1. Turn ignition switch OFF.
2. Check EVAP purge line for improper connection or disconnection. Refer to EC-40, "
Description".
OK or NG
OK >> GO TO 5.
NG >> Repair it.
5.CHECK EVAP PURGE HOSE AND PURGE PORT
1. Disconnect purge hoses connected to EVAP service port A and
EVAP canister purge volume control solenoid valve B.
2. Blow air into each hose and EVAP purge port C.
PURG VOL CONT/V Vacuum
100% Should exist.
0% Should not exist.
Vacuum should not exist.
Vacuum should exist.
SEF367U
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DTC P0441 EVAP CONTROL SYSTEMEC-339
< SERVICE INFORMATION > [VQ35DE]
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3. Check that air flows freely.
OK or NG
OK (With CONSULT-III)>>GO TO 6.
OK (Without CONSULT-III)>>GO TO 7.
NG >> Repair or clean hoses and/or purge port.
6.CHECK EVAP CANISTER PURGE VO
LUME CONTROL SOLENOID VALVE
With CONSULT-III
1. Start engine.
2. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III. Check that engine speed var-
ies according to the valve opening.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7.CHECK EVAP CANISTER PURGE VO LUME CONTROL SOLENOID VALVE
Refer to EC-360, "
Component Inspection".
OK or NG
OK >> GO TO 8.
NG >> Replace EVAP canister purge volume control solenoid valve.
8.CHECK EVAP CONTRO L SYSTEM PRESSURE SENSOR CONNECTOR
1. Disconnect EVAP control system pressure sensor harness connector.
2. Check connectors for water.
OK or NG
OK >> GO TO 9.
NG >> Replace EVAP control system pressure sensor.
9.CHECK EVAP CONTRO L SYSTEM PRESSURE SENSOR FUNCTION
Refer to EC-375, "
DTC Confirmation Procedure" for DTC P0452 and EC-381, "DTC Confirmation Procedure"
for DTC P0453.
OK or NG
OK >> GO TO 10.
NG >> Replace EVAP control system pressure sensor.
10.CHECK RUBBER TUBE FOR CLOGGING
1. Disconnect rubber tube connected to EV AP canister vent control valve.
2. Check the rubber tube for clogging.
OK or NG
OK >> GO TO 11.
NG >> Clean the rubber tube using an air blower.
11 .CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to EC-364, "
Component Inspection".
OK or NG
OK >> GO TO 12.
NG >> Replace EVAP canister vent control valve.
12.CHECK EVAP PURGE LINE
SEF368U
Water should not exist.
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DTC P0442 EVAP CONTROL SYSTEMEC-341
< SERVICE INFORMATION > [VQ35DE]
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DTC P0442 EVAP CONTROL SYSTEM
On Board Diagnosis LogicINFOID:0000000001326166
This diagnosis detects leaks in the EVAP purge line using engine intake manifold vacuum.
If pressure does not increase, the ECM will check for l
eaks in the line between the fuel tank and EVAP canister
purge volume control solenoid valve, under the following Vacuum test conditions.
The EVAP canister vent control valve is closed to s hut the EVAP purge line off. The EVAP canister purge vol-
ume control solenoid valve will then be opened to depressurize the EVAP purge line using intake manifold
vacuum. After this occurs, the EVAP canister purge volume control solenoid valve will be closed.
CAUTION:
 Use only a genuine NISSAN fuel filler cap as a replacemen t. If an incorrect fuel filler cap is used, the
MIL may come on.
 If the fuel filler cap is not tigh tened properly, the MIL may come on.
 Use only a genuine NISSAN rubber tube as a replacement.
DTC Confirmation ProcedureINFOID:0000000001326167
NOTE:
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0442
0442 EVAP control system
small leak detected
(negative pressure) EVAP control system has a leak, EVAP
control system does not operate prop-
erly.  Incorrect fuel tank vacuum relief valve
 Incorrect fuel filler cap used
 Fuel filler cap remains open or fails to close.
 Foreign matter caught in fuel filler cap.
 Leak is in line between intake manifold and EVAP
canister purge volume control solenoid valve.
 Foreign matter caught in EVAP canister vent con- trol valve.
 EVAP canister or fuel tank leaks
 EVAP purge line (pipe and rubber tube) leaks
 EVAP purge line rubber tube bent
 Loose or disconnected rubber tube
 EVAP canister vent control valve and the circuit
 EVAP canister purge volume control solenoid valve and the circuit
 Fuel tank temperature sensor
 O-ring of EVAP canister vent control valve is missing or damaged
 EVAP canister is saturated with water
 EVAP control system pressure sensor
 Fuel level sensor and the circuit
 Refueling EVAP vapor cut valve
 ORVR system leaks
PBIB1026E
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EC-342
< SERVICE INFORMATION >[VQ35DE]
DTC P0442 EVAP CONTROL SYSTEM
 If DTC Confirmation Procedure has been previously conduc
ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
 Perform “DTC WORK SUPPORT” when the fuel level is between 1/4 and 3/4 full, and vehicle is placed
on flat level surface.
 Always perform test at a temperature of 0 to 30 °C (32 to 86 °F).
WITH CONSULT-III
1. Turn ignition switch ON.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
4. Make sure that the following conditions are met.
COOLAN TEMP/S: 0 - 70 °C (32 - 158 °F)
INT/A TEMP SE: 0 - 30 °C (32 - 86 °F)
5. Select “EVAP SML LEAK P0442/P1442” of “EV APORATIVE SYSTEM” in “DTC WORK SUPPORT” mode
with CONSULT-III.
Follow the instruction displayed.
NOTE:
If the engine speed cannot be maintained within t he range displayed on the CONSULT-III screen, go to
EC-80, "
Basic Inspection".
6. Make sure that “OK” is displayed. If “NG” is displayed, refer to EC-342, "
Diagnosis Procedure".
NOTE:
Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid valve
properly.
WITH GST
NOTE:
Be sure to read the explanation of EC-55, "
Emission-Related Diagnostic Information" before driving vehicle.
1. Start engine.
2. Drive vehicle according to EC-55, "
Emission-Related Diagnostic Information".
3. Stop vehicle.
4. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON.
5. Select Service $07 with GST.
- If P0442 is displayed on the screen, go to EC-342, "
Diagnosis Procedure".
- If P0441 is displayed on the screen, go to EC-337, "
Diagnosis Procedure" for DTC P0441.
Diagnosis ProcedureINFOID:0000000001326168
1.CHECK FUEL FILLER CAP DESIGN
1. Turn ignition switch OFF.
2. Check for genuine NISSAN fuel filler cap design.
OK or NG
OK >> GO TO 2.
NG >> Replace with genuine NISSAN fuel filler cap.
2.CHECK FUEL FILLER CAP INSTALLATION
Check that the cap is tightened proper ly by rotating the cap clockwise.
OK or NG
OK >> GO TO 3.
NG >> 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower.
2. Retighten until ratcheting sound is heard.
SEF915U
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DTC P0442 EVAP CONTROL SYSTEMEC-345
< SERVICE INFORMATION > [VQ35DE]
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2. Does water drain from the EVAP canister?
Ye s o r N o
Yes >> GO TO 10.
No (With CONSULT-III)>>GO TO 12.
No (Without CONSULT-III)>>GO TO 13.
10.CHECK EVAP CANISTER
Weigh the EVAP canister with the EV AP 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 (With CONSULT-III)>>GO TO 12.
OK (Without CONSULT-III)>>GO TO 13.
NG >> GO TO 11.
11 .DETECT MALFUNCTIONING PART
Check the following.
 EVAP canister for damage
 EVAP hose between EVAP canister and vehi cle frame for clogging or poor connection
>> Repair hose or replace EVAP canister.
12.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-III
1. Disconnect vacuum hose to EVAP canister purge volu me control solenoid valve at EVAP service port.
2. Start engine.
3. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode.
4. Touch “Qu” on CONSULT-III screen to increase “PURG VOL CONT/V” opening to 100%.
5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm.
OK or NG
OK >> GO TO 15.
NG >> GO TO 14.
13.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
Without CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Stop engine.
3. Disconnect vacuum hose to EVAP canister purge volu me control solenoid valve at EVAP service port.
4. Start engine and let it idle for at least 80 seconds.
5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm.
OK or NG
OK >> GO TO 16.
NG >> GO TO 14.
14.CHECK VACUUM HOSE
Check vacuum hoses for clogging or disconnection. Refer to EC-106, "
Vacuum Hose Drawing".
OK or NG
PBIB1031E
Vacuum should exist.
Vacuum should exist.
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EC-348
< SERVICE INFORMATION >[VQ35DE]
DTC P0443 EVAP CANISTER PURGE VO
LUME CONTROL SOLENOID VALVE
DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VA LV E
DescriptionINFOID:0000000001326169
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 sol enoid valve changes to control the flow rate. The EVAP
canister purge volume control solenoid valve repeats ON/O FF operation according to the signal sent from the
ECM. The opening of the valve varies for optimum engi ne control. The optimum value stored in the ECM is
determined by considering various engine conditions. When t he engine is operating, the flow rate of fuel vapor
from the EVAP canister is r egulated 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-III Reference Value in Data Monitor ModeINFOID:0000000001326170
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 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
Air fuel ratio (A/F) sensor 1Density of oxygen in exhaust gas
(Mixture ratio fe
edback signal)
Fuel tank temperature sensor Fuel temperature in fuel tank
Wheel sensor Vehicle speed*
2
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
(Accelerator pedal is not depressed
even slightly, after engine starting)
0%
2,000 rpm —
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DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-349
< SERVICE INFORMATION > [VQ35DE]
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On Board Diagnosis LogicINFOID:0000000001326171
DTC Confirmation ProcedureINFOID:0000000001326172
NOTE:
If DTC Confirmation Procedure has been previously conduc
ted, 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-III
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 “EVAPORA TIVE SYSTEM” in “DTC WORK SUPPORT” mode with
CONSULT-III.
5. Touch “START”.
6. Start engine and let it idle until “TESTING” on CO NSULT-III changes to “COMPLETED”. (It will take
approximately 10 seconds.)
If “TESTING” is not displayed afte r 5 minutes, retry from step 2.
7. Make sure that “OK” is displayed after touching “S ELF-DIAG RESULTS”. If “NG” is displayed, refer to EC-
351, "Diagnosis 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-351, "
Diagnosis Procedure".
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0443
0443 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 so-
lenoid valve
(EVAP canister purge volume control so-
lenoid valve is stuck open.)
 EVAP canister vent control valve
 EVAP canister
Hoses (Hoses are connected incorrectly or
clogged.)
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DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-351
< SERVICE INFORMATION > [VQ35DE]
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Do not use ECM ground terminals wh
en measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnosis ProcedureINFOID:0000000001326174
1.CHECK EVAP CANISTER PURGE VOLUME CONT ROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect EVAP canister purge volume control solenoid valve harness connector.
3. Turn ignition switch ON.
TER-
MI-
NAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
45 GY EVAP canister purge volume
control solenoid valve [Engine is running]
 Idle speed
 Accelerator pedal is not depressed even
slightly, after engine starting BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
 Engine speed is about 2,000 rpm (More than 100 seconds after starting engine) BATTERY VOLTAGE
(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/B
Power supply for ECM
[Ignition switch: ON] BATTERY VOLTAGE
(11 - 14V)
SEC990C
SEC991C
PBIB2097E
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EC-352
< SERVICE INFORMATION >[VQ35DE]
DTC P0443 EVAP CANISTER PURGE VO
LUME CONTROL SOLENOID VALVE
4. Check voltage between EVAP canister purge volume control
solenoid valve terminal 1 and ground with CONSULT-III 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
 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 CONTRO L SOLENOID VALVE OUTPUT SIGNAL CIRCUIT
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.
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 SY STEM PRESSURE SENSOR
Refer to EC-380, "
Component Inspection".
OK or NG
OK (With CONSULT-III)>>GO TO 6.
OK (Without CONSULT-III)>>GO TO 7.
NG >> Replace EVAP control system pressure sensor.
6.CHECK EVAP CANISTER PURGE VO LUME CONTROL SOLENOID VALVE
With CONSULT-III
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Start engine.
4. Perform “PURG VOL CONT/V” in “ACTIVE TEST” m ode with CONSULT-III. Check that engine speed var-
ies according to the valve opening. Voltage: Battery voltage
PBIB0148E
Continuity should exist.
Water should not exist.
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