FixVault

DTC P0742:00: Notes

DTC P0742:00 TCC stuck on
DETECTION CONDITION 
  • Under the following conditions, speed difference between engine speed and turbine rotation speed is 50 rpm or less
    • Gear position is 4GR or 5GR
    • Accelerator pedal position is 0.78% or less, 3.125-6.25% or 6.25% or more
    • Vehicle speed is 70 km/h {43 mph} or less
    • TCC operation is off

    Diagnostic support note 

  • The check engine light does not illuminate.
  • The automatic transaxle warning light illuminates if the TCM detects the above malfunction condition during the first drive cycle.
  • PENDING CODE is not available.
  • FREEZE FRAME DATA is not available.
  • The DTC is stored in the TCM memory.
FAIL-SAFE FUNCTION 
  • Inhibits TCC control
  • Maximizes line pressure
  • Inhibits feedback control
POSSIBLE CAUSE 
  • Deteriorated ATF
  • ATF level low
  • Solenoid valve malfunction
    • Pressure control solenoid A
    • Shift solenoid A
    • Shift solenoid B
    • Shift solenoid C
    • Shift solenoid D
    • Shift solenoid E
  • Line pressure malfunction
  • Primary control valve body malfunction
  • TCM malfunction
SYSTEM WIRING DIAGRAM  -