Infiniti M45 (Y34). Manual — part 410
DTC P0441 EVAP CONTROL SYSTEM
EC-329
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EC
9.
EC-329, "Diagnostic Procedure"
Diagnostic Procedure
ABS002K4
1.
CHECK EVAP CANISTER
1.
Turn ignition switch OFF.
2.
Check EVAP canister for cracks.
OK or NG
OK (With CONSULT-II)>>GO TO 2.
OK (Without CONSULT-II)>>GO TO 3.
NG
>> Replace EVAP canister.
2.
CHECK PURGE FLOW
With CONSULT-II
1.
Disconnect vacuum hose connected to EVAP canister purge
volume control solenoid valve at EVAP service port and install
vacuum gauge. For the location of EVAP service port, refer to
EC-693, "EVAPORATIVE EMISSION LINE DRAWING"
2.
Start engine and let it idle.
3.
Select “PURG VOL CONT/V” in “ACTIVE TEST” mode with
CONSULT-II.
4.
Rev engine up to 2,000 rpm.
5.
Touch “Qd” and “Qu” on CONSULT-II 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-II
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 service port and install
PBIB1114E
PURG VOL CONT/V
Vacuum
100%
Should exist.
0%
Should not exist.
PBIB0147E
PBIB1114E
EC-330
DTC P0441 EVAP CONTROL SYSTEM
vacuum gauge. For the location of EVAP service port, refer to
EC-693, "EVAPORATIVE EMISSION LINE
.
4.
Start engine and let it idle for at least 80 seconds.
5.
Check vacuum gauge indication when revving engine up to 2,000 rpm.
6.
Release the accelerator pedal fully and let engine idle.
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-693, "EVAPORATIVE EMISSION LINE DRAWING"
.
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 .
3.
Check that air flows freely.
OK or NG
OK (With CONSULT-II)>>GO TO 6.
OK (Without CONSULT-II)>>GO TO 7.
NG
>> Repair or clean hoses and/or purge port.
Vacuum should exist.
Vacuum should not exist.
SEF367U
SEF368U
DTC P0441 EVAP CONTROL SYSTEM
EC-331
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6.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT-II
1.
Start engine.
2.
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-550, "Component Inspection"
OK or NG
OK
>> GO TO 8.
NG
>> Replace EVAP canister purge volume control solenoid valve.
8.
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 9.
NG
>> Replace EVAP control system pressure sensor.
9.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR FUNCTION
Refer to DTC Confirmation Procedure for DTC P0452
, 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 EVAP 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-557, "Component Inspection"
OK or NG
OK
>> GO TO 12.
NG
>> Replace EVAP canister vent control valve.
PBIB0147E
Water should not exist.
EC-332
DTC P0441 EVAP CONTROL SYSTEM
12.
CHECK EVAP PURGE LINE
Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leaks.
Refer to
EC-693, "EVAPORATIVE EMISSION LINE DRAWING"
.
OK or NG
OK
>> GO TO 13.
NG
>> Replace it.
13.
CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
>> GO TO 14.
14.
CHECK INTERMITTENT INCIDENT
Refer to
EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
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