Infiniti G20 (P11). Manual — part 245
Wiring Diagram
NCEC0543
TEC712
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0446 EVAPORATIVE EMISSION (EVAP) CANISTER VENT CONTROL
VALVE (CIRCUIT)
Wiring Diagram
EC-391
Diagnostic Procedure
NCEC0544
1
INSPECTION START
1. Do you have CONSULT-II?
Yes or No
Yes
©
GO TO 2.
No
©
GO TO 3.
2
CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
With CONSULT-II
1. Turn ignition switch “OFF” and then turn “ON”.
2. Select “VENT CONTROL/V” in “ACTIVE TEST” mode with CONSULT-II.
3. Touch “ON/OFF” on CONSULT-II screen.
SEF802Y
4. Check for operating sound of the valve.
Clicking noise should be heard.
OK or NG
OK
©
GO TO 7.
NG
©
GO TO 3.
DTC P0446 EVAPORATIVE EMISSION (EVAP) CANISTER VENT CONTROL
VALVE (CIRCUIT)
Diagnostic Procedure
EC-392
3
CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect EVAP canister vent control valve harness connector.
SEF859X
3. Turn ignition switch “ON”.
4. Check voltage between EVAP canister vent control valve terminal 1 and ground with CONSULT-II or tester.
SEF336X
OK or NG
OK
©
GO TO 5.
NG
©
GO TO 4.
4
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors T19, T20
I
Harness connectors B113, T1
I
Harness connectors B10, B120
I
Harness connectors B3, M8
I
Fuse block (J/B) connector M3
I
10A fuse
I
Harness for open or short between EVAP canister vent control valve and fuse
©
Repair harness or connectors.
5
CHECK EVAP CANISTER VENT CONTROL 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 102 and EVAP canister vent control valve terminal 2.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK
©
GO TO 7.
NG
©
GO TO 6.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0446 EVAPORATIVE EMISSION (EVAP) CANISTER VENT CONTROL
VALVE (CIRCUIT)
Diagnostic Procedure (Cont’d)
EC-393
6
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors T19, T20
I
Harness connectors B113, T1
I
Harness connectors B10, B120
I
Harness connectors B3, M8
I
Harness connectors F24, M62
I
Harness for open or short between EVAP canister vent control valve and ECM
©
Repair open circuit or short to ground or short to power in harness or connectors.
7
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 8.
NG
©
Clean the rubber tube using an air blower.
8
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 9.
NG
©
Replace EVAP canister vent control valve.
DTC P0446 EVAPORATIVE EMISSION (EVAP) CANISTER VENT CONTROL
VALVE (CIRCUIT)
Diagnostic Procedure (Cont’d)
EC-394
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