[Previous][Next]
DTC Description
 
 
DTC DETECTION LOGIC
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
P040100EGR A FLOW INSUFFICIENT
(EGR "A" flow insufficient detected)
Diagnosis condition—
Signal (terminal)EGR volume control valve
ThresholdWhen ECM detects that negative pressure variation in intake manifold is smaller than the variation corresponding to EGR valve opening in case of opening/closing EGR control valve in a condition fuel supply is cut.
Diagnosis delay time—
 
 
POSSIBLE CAUSE
  • EGR cooler clogged
  • EGR pipe clogged
  • Incorrect EGR pipe connection
 
 
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.
 
 
DTC Confirmation Procedure
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
: .
 
2.PERFORM DTC CONFIRMATION PROCEDURE
  1. Start engine and warm it up to normal operating temperature.
  2. Drive the vehicle at 80 km/h (50 MPH).
    cautionAlways drive vehicle at a safe speed.
  3. Release the accelerator pedal fully until the vehicle speed decreases to 40 km/h (25 MPH).
  4. 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