AUTOMATIC TRANSMISSION SYSTEM(for 2GR-FKS), Diagnostic DTC:P07407F, P27567F

DTC Code DTC Name
P07407F Torque Converter Clutch Actuator Stuck Off
P27567F Torque Converter Clutch Pressure Control Solenoid Control Actuator Stuck Off

DESCRIPTION

By turning the shift solenoid valve SL ON or OFF, the ECM controls the fluid pressure to the lock-up relay valve, turning the lock-up ON or OFF.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P07407F Torque Converter Clutch Actuator Stuck Off

All of the following conditions are met (2-trip detection logic):


  • Engine coolant temperature is 40°C (104°F) or higher.

  • ATF temperature is -10°C (14°F) or higher.

  • The vehicle is driven with the shift lever in D.

  • No malfunctions are detected in the shift solenoid valve SL1, SL2, SL3, SL4, SL5, SR, SLU and SL, transmission revolution sensors (SP2 and NT), engine coolant temperature sensor, ATF temperature sensor, knock control sensor, electronic throttle and CAN communication system.

  • During lock-up request, the engine speed and turbine speed slip amount is 70 rpm or more for 2 seconds or more.

  • Shift solenoid valve SL

  • Shift solenoid valve SLU

  • Transmission valve body assembly

  • Torque converter assembly

  • Automatic transmission assembly

 Comes on DTC stored SAE Code: P0741
P27567F Torque Converter Clutch Pressure Control Solenoid Control Actuator Stuck Off

All of the following conditions are met (2-trip detection logic):


  • Engine coolant temperature is 40°C (104°F) or higher.

  • ATF temperature is -10°C (14°F) or higher.

  • The vehicle is driven with the shift lever in D.

  • No malfunctions are detected in the shift solenoid valve SL1, SL2, SL3, SL4, SL5, SR, SLU and SL, transmission revolution sensors (SP2 and NT), engine coolant temperature sensor, ATF temperature sensor, knock control sensor, electronic throttle and CAN communication system.

  • During lock-up request, the engine speed and turbine speed slip amount is 70 rpm or more for 2 seconds or more.

  • Shift solenoid valve SL

  • Shift solenoid valve SLU

  • Transmission valve body assembly

  • Torque converter assembly

  • Automatic transmission assembly

 Comes on DTC stored SAE Code: P2757

MONITOR DESCRIPTION

Torque converter lock-up is controlled by the ECM based on the transmission revolution sensor (NT), engine speed, engine load, engine coolant temperature, vehicle speed, transmission fluid temperature and gear selection. The ECM determines the lock-up status of the torque converter assembly by comparing the engine speed (NE) to the input turbine speed (NT). The ECM calculates the actual transmission gear by comparing the input turbine speed (NT) to the counter gear speed (NC). When conditions are appropriate, the ECM requests "lock-up" by applying control voltage to the shift solenoid valve SL. When the shift solenoid valve SL is turned on, it applies pressure to the lock-up relay valve and locks the torque converter assembly.

If the ECM detects no lock-up after lock-up has been requested, the ECM interprets this as a malfunction of the shift solenoid valve SL or SLU. The ECM will illuminate the MIL and store a DTC.

Tech Tips

Example:

When the following condition is met, the system judges it to be a malfunction.

There is a difference in rotation (speed) between the input side (engine speed) and output side (input turbine speed) of the torque converter assembly when the ECM commands lock-up.

(Engine speed is at least 70 rpm greater than the input turbine speed.)

CONFIRMATION DRIVING PATTERN

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

Tech Tips

After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the engine switch off and wait for 2 minutes or more.

  5. Turn the engine switch on (IG) and turn the GTS on.

  6. Start the engine.

  7. Perform the Lock-up Function inspection in Road Test.

    Click here

  8. Stop the vehicle.

  9. Enter the following menus: Powertrain / Transmission / Utility / All Readiness.

  10. Input the DTC: P07407F or P27567F.

  11. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

CAUTION / NOTICE / HINT

Note

Perform registration and/or initialization when parts related to the automatic transmission are replaced.

Click here

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Transmission / Trouble Codes.


      Powertrain > Transmission > Trouble Codes

    5. Read the DTCs using the GTS.

      Result
      Result Proceed to
      Only DTCs P07407F and P27567F are output A
      P07407F, P27567F and other DTCs are output B

      Tech Tips

      If a solenoid related or oil pressure switch related DTC is output, troubleshoot that DTC first.


    B

    GO TO DTC CHART Click here

    A

  2. INSPECT SHIFT SOLENOID VALVE SL


    1. B003VX0C02
      *1 Shift Solenoid Valve SL

      Remove the shift solenoid valve SL.

      Click here

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      Terminal of shift solenoid valve SL connector - Shift solenoid valve SL body 20°C (68°F) 11 to 15 Ω

    3. Connect a positive (+) lead from the battery to the terminal of the shift solenoid valve connector, and a negative (-) lead to the shift solenoid valve body. Check that the valve moves and makes an operating sound.

      OK
      Valve moves and makes an operating sound.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SHIFT SOLENOID VALVE SL Click here

    OK

  3. INSPECT SHIFT SOLENOID VALVE SLU


    1. B003VU8C19
      *1 Shift Solenoid Valve SLU

      Remove the shift solenoid valve SLU.

      Click here

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      Terminal 1 of the shift solenoid valve SLU - Terminal 2 20°C (68°F) 5.0 to 5.6 Ω

    3. Connect a positive (+) lead from the battery with a 21 W bulb to terminal 1 and a negative (-) lead to terminal 2 of the shift solenoid valve connector. Check that the valve moves and makes an operating sound.

      OK
      Valve moves and makes an operating sound.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SHIFT SOLENOID VALVE SLU Click here

    OK

  4. INSPECT TRANSMISSION VALVE BODY ASSEMBLY


    1. Check the transmission valve body assembly.

      Click here

      OK
      There is no foreign matter on each valve and they operate smoothly.
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY Click here

    OK

  5. INSPECT TORQUE CONVERTER ASSEMBLY


    1. Check the torque converter assembly.

      Click here

      OK
      The torque converter assembly operates normally.
      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSEMBLY Click here

    NG

    REPLACE TORQUE CONVERTER ASSEMBLY Click here