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DTC Description
 
 
DTC DETECTION LOGIC
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
P064100Sensor reference voltage A
(Sensor reference voltage “A” circuit 1 open)
Diagnosis conditionIgnition switch ON
Signal (terminal)
ThresholdWhen an input voltage of sensor reference is not 3.3 V.
Diagnosis delay time
 
 
POSSIBLE CAUSE
Electric IVT control module
 
 
FAIL-SAFE
Engine operating condition in fail-safe mode
Fail safe modeVehicle behavior
Device fix mode
  • This mode fixes the electric IVT motor and the EVT control solenoid valve in the reference position.
  • The intake manifold runner control valve motor is turned OFF (intake manifold runner control valve opens).
  • A control signals is not transmitted to EGR volume control valve and the EGR volume control is deactivated.
Combustion control modeStratified charge combustion control at startingNo stratified charge combustion at starting (cold start).
Idle speed controlStops feedback control of idle speed and controls with specified speed.
Recovery speed control at deceleratingStops recovery speed control by the fuel cut at decelerating and controls with specified speed.
Idle neutral controlStops idle neutral control.
 
 
DTC Confirmation Procedure
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
: .
 
2.PERFORM DTC CONFIRMATION PROCEDURE
  1. Turn ignition switch ON and wait at least 5 seconds.
  2. Check DTC.
Is DTC P0641 detected?
Refer to DTC Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END