DTC Logic
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition | Possible cause |
P0448 | VENT CONTROL VALVE (Evaporative emission system vent control circuit shorted) | EVAP canister vent control valve remains closed under specified driving conditions. |
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DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
Never exceed 3 minutes.
With GST
Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected? YES >> Proceed to EC-306, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK RUBBER TUBE
Is the inspection result normal? YES >> GO TO 2.
NO >> Clean rubber tube using an air blower.
2.CHECK EVAP CANISTER VENT CONTROL VALVE
Check the EVAP canister vent control valve. Refer to EC-307, "Component Inspection".
Is the inspection result normal? YES >> GO TO 3.
NO >> Replace EVAP canister vent control valve. Refer to FL-15, "Removal and Installation".
3.CHECK IF EVAP CANISTER IS SATURATED WITH WATER
Does water drain from EVAP canister? YES >> GO TO 4.
NO >> GO TO 6.
4.CHECK EVAP CANISTER
Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached.
The weight should be less than 2.1 kg (4.6 lb).
Is the inspection result normal? YES >> GO TO 6.
NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
>> Repair hose or replace EVAP canister. Refer to FL-15, "Removal and Installation".
6.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
Water should not exist.
Is the inspection result normal? YES >> GO TO 7.
NO >> Replace EVAP control system pressure sensor. Refer to FL-15, "Removal and Installation".
7.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Check the EVAP control system pressure sensor. Refer to EC-311, "Component Inspection".
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> Replace EVAP control system pressure sensor. Refer to FL-15, "Removal and Installation".
Component Inspection
1.CHECK EVAP CANISTER VENT CONTROL VALVE-1
Is it rusted?
YES >> Replace EVAP canister vent control valve. Refer to FL- 15, "Removal and Installation".
NO >> GO TO 2.
2.CHECK EVAP CANISTER VENT CONTROL VALVE-2
With CONSULT
Make sure new O-ring is installed properly.
Operation takes less than 1 second.
Without CONSULT
Check air passage continuity and operation delay time under the following conditions
Make sure new O-ring is installed properly.
Operation takes less than 1 second.
Is the inspection result normal? YES >> GO TO 3.
NO >> Replace EVAP canister vent control valve. Refer to FL-15, "Removal and Installation".
3.CHECK EVAP CANISTER VENT CONTROL VALVE-3
With CONSULT
Make sure new O-ring is installed properly.
Operation takes less than 1 second.
Without CONSULT
Make sure new O-ring is installed properly.
Operation takes less than 1 second.
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace EVAP canister vent control valve. Refer to FL-15, "Removal and Installation".
Engine assembly CVT
CVT : Exploded View
Washer
Upper torque rod (RH)
Engine mounting insulator (RH)
Engine mounting insulator (LH)
Rear torque rod bracket
Rear torque rod
CVT : Removal and Installation
WARNING:
Situate the vehicle on a flat and solid surface.
Place chocks at front and back o ...
Excessive abs function operation
frequency
Diagnosis Procedure
1.CHECK START
Check front and rear brake force distribution using a brake
tester.
Is the inspection result normal?
YES >> GO TO 2
NO >> Check brake system.
2.CHECK FRONT AND REAR AXLE
Make sure that there is no excessive play in the front and rear
axles. ...
Ground
Ground distribution
Main harness
Engine room harness
Engine control harness
Body harness
...