Infiniti I30 (A33). Manual — part 270
8
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND
SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 84 and EVAP control system pressure sensor terminal 2.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK (With CONSULT-II)
©
GO TO 10.
OK (Without CONSULT-
II)
©
GO TO 11.
NG
©
GO TO 9.
9
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors B2, M2
I
Harness connectors M81, F49
I
Harness for open or short between ECM and EVAP control system pressure sensor
©
Repair open circuit or short to ground or short to power in harness or connectors.
10
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.
SEF985Y
OK or NG
OK
©
GO TO 12.
NG
©
GO TO 11.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0450 EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM PRESSURE
SENSOR
Diagnostic Procedure (Cont’d)
EC-395
11
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.
SEF266X
SEF334X
Without CONSULT-II
Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions.
SEF266X
SEF335X
OK or NG
OK
©
GO TO 12.
NG
©
Replace EVAP canister purge volume control solenoid valve.
DTC P0450 EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM PRESSURE
SENSOR
Diagnostic Procedure (Cont’d)
EC-396
12
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 13.
NG
©
Clean the rubber tube using an air blower.
13
CHECK EVAP CANISTER VENT CONTROL VALVE-I
1. Remove EVAP canister vent control valve from EVAP canister.
2. Check portion B of EVAP canister vent control valve for being rusted.
SEF337X
OK or NG
OK
©
GO TO 14.
NG
©
Replace EVAP canister vent control valve.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0450 EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM PRESSURE
SENSOR
Diagnostic Procedure (Cont’d)
EC-397
14
CHECK EVAP CANISTER VENT CONTROL VALVE
With CONSULT-II
1. Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.
2. Check air passage continuity and operation delay time under the following conditions.
SEF991Y
Without CONSULT-II
Check air passage continuity and operation delay time under the following conditions.
SEF339X
Make sure new O-ring is installed properly.
OK or NG
OK
©
GO TO 16.
NG
©
GO TO 15.
15
CHECK EVAP CANISTER VENT CONTROL VALVE-III
1. Clean the air passage (portion A to B) of EVAP canister vent control valve using an air blower.
2. Perform Test No. 14 again.
OK or NG
OK
©
GO TO 16.
NG
©
Replace EVAP canister vent control valve.
DTC P0450 EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM PRESSURE
SENSOR
Diagnostic Procedure (Cont’d)
EC-398
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