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DTC Description
 
 
DTC DETECTION LOGIC
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
P044800VENT CONTROL VALVE
(EVAP system vent control circuit open)
Diagnosis conditionEngine running at idle
Signal (terminal)EVAP canister vent control valve signal
ThresholdAn improper voltage signal is sent to ECM through EVAP canister vent control valve
Diagnosis delay time—
 
 
POSSIBLE CAUSE
  • Harness or connectors (EVAP canister vent control valve circuit is open or shorted.)
  • EVAP canister vent control valve
  • Hoses (Hoses are connected incorrectly or clogged.)
 
 
FAIL-SAFE
Not applicable
 
 
DTC Confirmation Procedure
1.PRECONDITIONING
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.
: .
 
2.PERFORM DTC CONFIRMATION PROCEDURE
  1. Start engine and wait at least 8 seconds.
  2. Check 1st trip DTC.
Is 1st trip DTC detected?
Proceed to DTC Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END