Nissan Frontier D22. Manual - part 308

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

EC-335

[KA24DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

3. 

CHECK POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect EVAP canister vent control valve harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between EVAP canister vent control valve termi-
nal 1 and ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E43, M65

●

Harness connectors M67, C1

●

Fuse block (J/B) connector E49

●

10A fuse

●

Harness for open or short between EVAP canister vent control valve and fuse

>> Repair harness or connectors.

5. 

CHECK OUTPUT SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between ECM terminal 108 and terminal 2.
Refer to Wiring Diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

SEF143S

Voltage

: Battery voltage

SEF240W

Continuity should exist.

EC-336

[KA24DE]

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

6. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors C1, M67

●

Harness connectors M81, F36

●

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 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.

OK or NG

OK

>> GO TO 8.

NG

>> Replace EVAP canister vent control valve.

8. 

CHECK EVAP CANISTER VENT CONTROL VALVE-II

 With CONSULT-II

1.

Reconnect harness connectors disconnected.

2.

Turn ignition switch “ON”.

3.

Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.

4.

Check air passage continuity and operation delay time.

 Without CONSULT-II

Check air passage continuity and operation delay time under the fol-
lowing condition.

Operation takes less than 1 second.
OK or NG

OK

>> GO TO 10.

 NG

>> GO TO 9.

BBIA0308E

Condition

Air passage continuity between 

A and B

12V direct current supply between 
terminals 1 and 2

No

OFF

Yes

SEF803Y

BBIA0309E

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

EC-337

[KA24DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

9. 

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. 8 again.

OK or NG

OK

>> GO TO 10.

NG

>> Replace EVAP canister vent control valve.

10. 

CHECK INTERMITTENT INCIDENT

Perform 

EC-120, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END.

EC-338

[KA24DE]

DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

PFP:25085

Component Description

UBS00D7S

The EVAP control system pressure sensor detects pressure in the
purge line. The sensor output voltage to the ECM increases as pres-
sure increases. The EVAP control system pressure sensor is not
used to control the engine system. It is used only for on board diag-
nosis.

CONSULT-II Reference Value in Data Monitor Mode

UBS00D7T

Specification data are reference values.

On Board Diagnosis Logic

UBS00D7U

SEF340V

PBIB1207E

MONITOR ITEM

CONDITION

SPECIFICATION

EVAP SYS PRES

●

Ignition switch: ON

1.8 - 4.8V

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0452

EVAP control system 
pressure sensor low 
input

An excessively low voltage from the sensor is 
sent to ECM.

●

Harness or connectors
(The sensor circuit is open or shorted.)

●

EVAP control system pressure sensor