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DTC Description
 
 
DTC DETECTION LOGIC
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
P074200TORQUE CONVERTER
(Torque Converter Clutch Circuit Stuck On)
Diagnosis conditionWhen all of the following conditions are satisfied:
  • TCM power supply voltage: More than 11 V
  • Range: D (Except for Manual mode)
  • Accelerator pedal position : 10 deg. or more
  • Engine speed: 450 rpm or more
  • LU pressure: Less than –0.1 MPa and this state is maintained for 5 seconds
  • Secondary pulley seed: more than 0 rpm and less than 2470 rpm
Signal—
ThresholdDifferences between engine speed and input speed: 40 rpm or less.
Diagnosis delay time5 seconds
 
 
POSSIBLE CAUSE
  • Harness or connector (Torque converter clutch solenoid valve circuit is shorted to power supply)
  • Torque converter clutch solenoid valve
  • Torque converter
  • Control valve
 
 
FAIL-SAFE
  • Start is slow
  • Engine stops when shift to “D” position during stopping the vehicle.
 
 
DTC CONFIRMATION PROCEDURE
cautionAlways drive vehicle at a safe speed.
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” is previously conducted, always the ignition switch is OFF and wait at least 10 seconds before performing the next test.
: .
 
2.CHECK DTC DETECTION
  1. Start the engine.
  2. Maintain the following conditions for 5 seconds or more.
    cautionAlways drive at a safe speed.
    Shift position: “D” position
    Accelerator pedal position: 1.0/8 or more
    Vehicle speed: 1 - 15 km/h (0.6 - 9 MPH)
    Brake pedal: Depress*
    *: Keep depressing the brake pedal moderately not to accelrate the vehicle.
  3. Check the first trip DTC.
Is “P0742–00” detected?
Go to Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END