Infiniti G20 (P11). Manual — part 251
10
CHECK FOR EVAP LEAK
Without CONSULT-II
1. Turn ignition switch “OFF”.
2. Apply 12 volts DC to EVAP canister vent control valve. The valve will close. (Continue to apply 12 volts until the end of
test.)
SEF323Z
3. Apply 12 volts DC to vacuum cut valve bypass valve. The valve will open. (Continue to apply 12V until the end of test.)
SEF869X
4. Pressurize the EVAP line using pressure pump with 1.3 to 2.7 kPa (10 to 20 mmHg, 0.39 to 0.79 inHg), then remove
pump and EVAP service port adapter.
NOTE:
I
Never use compressed air or a high pressure pump.
I
Do not exceed 4.12 kPa (0.042 kg/cm
2
, 0.6 psi) of pressure in the system.
5. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details.
Refer to “EVAPORATIVE EMISSION LINE DRAWING”, EC-37.
SEF200U
OK or NG
OK (With CONSULT-II)
©
GO TO 11.
OK (Without CONSULT-
II)
©
GO TO 12.
NG
©
Repair or replace.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0455 EVAP CONTROL SYSTEM (GROSS LEAK)
Diagnostic Procedure (Cont’d)
EC-415
11
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-II
1. Disconnect vacuum hose to EVAP canister purge volume 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-II screen to increase “PURG VOL CONT/V” opening to 100.0%.
5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm.
SEF595Y
OK or NG
OK
©
GO TO 14.
NG
©
GO TO 13.
12
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Stop engine.
3. Disconnect vacuum hose to EVAP canister purge volume 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.
Vacuum should exist.
OK or NG
OK
©
GO TO 15.
NG
©
GO TO 13.
13
CHECK VACUUM HOSE
Check vacuum hoses for clogging or disconnection. Refer to “Vacuum Hose Drawing”, EC-27.
OK or NG
OK (With CONSULT-II)
©
GO TO 14.
OK (Without CONSULT-
II)
©
GO TO 15.
NG
©
Repair or reconnect the hose.
DTC P0455 EVAP CONTROL SYSTEM (GROSS LEAK)
Diagnostic Procedure (Cont’d)
EC-416
14
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.
SEF801Y
OK or NG
OK
©
GO TO 16.
NG
©
GO TO 15.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0455 EVAP CONTROL SYSTEM (GROSS LEAK)
Diagnostic Procedure (Cont’d)
EC-417
15
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.
SEF851X
SEF334X
Without CONSULT-II
Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions.
SEF851X
SEF335X
OK or NG
OK
©
GO TO 16.
NG
©
Replace EVAP canister purge volume control solenoid valve.
DTC P0455 EVAP CONTROL SYSTEM (GROSS LEAK)
Diagnostic Procedure (Cont’d)
EC-418
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