Infiniti I35 (A33). Manual — part 268
15
CHECK VACUUM HOSE
Check vacuum hoses for clogging or disconnection. Refer to “Vacuum Hose Drawing”, EC-31.
OK or NG
OK (With CONSULT-II)
©
GO TO 16.
OK (Without CONSULT-
II)
©
GO TO 17.
NG
©
Repair or reconnect the hose.
16
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.
SEC142D
OK or NG
OK
©
GO TO 18.
NG
©
GO TO 17.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0456 EVAP CONTROL SYSTEM
Diagnostic Procedure (Cont’d)
EC-413
17
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT-II
Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions.
SEC929C
SEF334X
Without CONSULT-II
Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions.
SEC929C
SEF335X
OK or NG
OK
©
GO TO 18.
NG
©
Replace EVAP canister purge volume control solenoid valve.
DTC P0456 EVAP CONTROL SYSTEM
Diagnostic Procedure (Cont’d)
EC-414
18
CHECK FUEL TANK TEMPERATURE SENSOR
1. Remove fuel level sensor unit.
2. Check resistance between fuel level sensor unit and fuel pump terminals 4 and 5 by heating with hot water or heat gun
as shown in the figure.
SEF587X
OK or NG
OK
©
GO TO 19.
NG
©
Replace fuel level sensor unit.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0456 EVAP CONTROL SYSTEM
Diagnostic Procedure (Cont’d)
EC-415
19
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
1. Remove EVAP control system pressure sensor with its harness connector connected.
CAUTION:
Never apply force to the air hole protector of the sensor if equipped.
SEF799W
2. Remove hose from EVAP control system pressure sensor.
3. Turn ignition switch ON.
4. Use pump to apply vacuum and pressure to EVAP control system pressure sensor as shown in figure.
CAUTION:
I
Always calibrate the vacuum pump gauge when using it.
I
Do not apply below −20 kPa (−150 mmHg, −5.91 inHg) or over 20 kPa (150 mmHg, 5.91 inHg) of pressure.
5. Check input voltage between ECM terminal 60 and ground.
SEC908C
MTBL1159
CAUTION:
Discard and EVAP control system pressure sensor which has been dropped from a height of more than 0.5 m
(19.7 in) onto a hard surface such as a concrete floor; use a new one.
OK or NG
OK
©
GO TO 20.
NG
©
Replace EVAP control system pressure sensor.
20
CHECK EVAP PURGE LINE
Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection.
Refer to “Evaporative Emission System”, EC-37.
OK or NG
OK
©
GO TO 21.
NG
©
Repair or reconnect the hose.
DTC P0456 EVAP CONTROL SYSTEM
Diagnostic Procedure (Cont’d)
EC-416
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