P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

VR38

P0443

Description
DTC Logic
Diagnosis Procedure
Component Inspection

Description

The EVAP canister purge volume control solenoid valve is used duty 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 No.	Trouble diagnosis name	DTC detecting condition	Possible cause
P0443	EVAP canister purge volume control solenoid valve	The canister purge flow is detected during the specified driving conditions, even when EVAP canister purge volume control solenoid valve is completely closed.	EVAP control system pressure sensor EVAP canister purge volume control solenoid valve (The valve is stuck open.) EVAP canister vent control valve EVAP canister Hoses (Hoses are connected incorrectly or clogged.)

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

2.PERFORM DTC CONFIRMATION PROCEDURE

3.PERFORM DTC CONFIRMATION PROCEDURE

Diagnosis Procedure

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

2.DETECT MALFUNCTIONING PART

3.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

4.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

5.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

6.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

7.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

8.CHECK RUBBER TUBE FOR CLOGGING

9.CHECK EVAP CANISTER VENT CONTROL VALVE

10.CHECK IF EVAP CANISTER IS SATURATED WITH WATER

11.CHECK EVAP CANISTER

12.DETECT MALFUNCTIONING PART

13.CHECK INTERMITTENT INCIDENT

Component Inspection

1.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT-III

Turn ignition switch OFF.
Reconnect all harness connectors disconnected.
Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.
Turn ignition switch ON.
Select “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III.
Touch “Qd” and “Qu” on CONSULT-III screen to adjust “PURG VOL CONT/V” opening and check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions.

Condition (PURG VOL CONT/V value)	Air passage continuity between (A) and (B)
100%	Existed
0%	Not existed

Without CONSULT-III

Turn ignition switch OFF.
Disconnect EVAP canister purge volume control solenoid valve harness connector.
Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.
Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions.

Condition
Air passage continuity
between (A) and (B)
12V direct current supply between terminals 1 and 2
Existed
No supply
Not existed

Is the inspection result normal?

YES>>INSPECTION END

NO>>Replace EVAP canister purge volume control solenoid valve

EVAP canister purge volume control solenoid valve		Ground	Voltage
Connector	Terminal
F13	1	Ground	Battery voltage

EVAP canister purge volume control solenoid valve		ECM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F13	2	F101	8	Existed

Condition	Air passage continuity between (A) and (B)
12V direct current supply between terminals 1 and 2	Existed
No supply	Not existed