P0445

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Description






The EVAP canister purge volume control solenoid valve is used to control the flow rate of fuel vapor from the EVAP canister. The EVAP
canister purge volume control solenoid valve is moved by ON/OFF
pulses from the ECM. The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.


DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. CONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
1.Turn ignition switch OFF and wait at least 10 seconds.
2.Turn ignition switch ON.
3.Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm battery voltage is more than 11 V at idle.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

1.Start engine and let it idle for at least 13 seconds.
2.Check 1st trip DTC.
Is 1st trip DTC detected?
YES- Go to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect EVAP canister purge volume control solenoid valve harness connector.
3.Turn ignition switch ON.
4.Check the voltage between EVAP canister purge volume control solenoid valve harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- GO TO 2.

2. DETECT MALFUNCTIONING PART

Check the following.
- Harness connectors E106, M6
- Harness connectors M116, F103
- Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R
- Harness for open or short between EVAP canister purge volume control solenoid valve and ECM
- Repair open circuit, short to ground or short to power in harness or connectors.

3. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT

FOR OPEN AND SHORT
1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Check the continuity between EVAP canister purge volume control solenoid valve harness connector and
ECM harness connector.





4.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES-1- With CONSULT: GO TO 5.
YES-2- Without CONSULT: GO TO 6.
NO- GO TO 4.

4. DETECT MALFUNCTIONING PART

Check the following.
- Harness connectors F104, F105
- Harness for open or short between EVAP canister purge volume control solenoid valve and ECM
- Repair open circuit, short to ground or short to power in harness or connectors.

5. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT
1.Reconnect all harness connectors disconnected.
2.Start engine.
3.Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT. Check that engine speed varies according to the valve opening.
Does engine speed vary according to the valve opening?
YES- GO TO 7.
NO- GO TO 6.

6. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to "Component Inspection" .
Is the inspection result normal?
YES- GO TO 7.
NO- Replace EVAP canister purge volume control solenoid valve.

7. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
- INSPECTION END


Component Inspection


1. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT
1.Turn ignition switch OFF.
2.Reconnect all harness connectors disconnected.
3.Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.
4.Turn ignition switch ON.
5.Select "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT.





6.Touch "Qd" and "Qu" on CONSULT screen to adjust "PURG
VOL C/V" opening and check air passage continuity of EVAP
canister purge volume control solenoid valve under the following conditions.





Without CONSULT
1.Turn ignition switch OFF.
2.Disconnect EVAP canister purge volume control solenoid valve harness connector.
3.Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.
4.Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace EVAP canister purge volume control solenoid valve