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EC-322 < DTC/CIRCUIT DIAGNOSIS > [VK56VD] P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID DTC Logic INFOID:0000000006217854 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING 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: >> 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 NO >> INSPECTION END Diagnosis Procedure INFOID:0000000006217855 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 Is the inspection result normal? YES >> GO TO 3. NO >> GO TO 2. 2. DETECT MALFUNCTIONING PART Check the following. DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause P0444 PURG VOLUME CONT/V An excessively low voltage signal is • Harness or connectors (The solenoid valve circuit is open or shorted.) • EVAP canister purge volume control solenoid valve P0445 PURG VOLUME CONT/V An excessively high voltage signal is • Harness or connectors (The solenoid valve circuit is shorted.) • EVAP canister purge volume control solenoid valve EVAP canister purge volume control solenoid valve Ground Voltage Connector Terminal F48 1 Ground Battery voltage |