AUTOMATIC TRANSMISSION SYSTEM(for 2GR-FKS) PRECAUTION


  1. PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL

    Note

    When disconnecting the cable from the negative (-) battery terminal, initialize the following system(s) after the cable is reconnected:

    System See Procedure
    Air Conditioning System

    Click here

    Variable Gear Ratio Steering System
    Parking Assist Monitor System

  2. PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED

    Note


    • If any parts are replaced, perform the following procedures as necessary referring to the table below.

      Replaced Part Reset Memory*1 Set Transmission Compensation Code Learning by Driving (Road Test)
      Automatic transmission assembly -*2 Perform*3 Perform

      • Transmission valve body assembly

      • Shift solenoid valve SL1, 2, 3, 4 and 5

      		 - - Perform

      ECM

      (If possible, read the transmission compensation code from the previous ECM)

      		 Possible - Perform*4 Perform
      Impossible - Perform*5 Perform
      Engine assembly Perform - Perform

      Tech Tips


      • *1: Reset Memory cannot be completed by only disconnecting and reconnecting the cable to the negative (-) battery terminal.

      • *2: When "Set Transmission Compensation Code" is performed, "Reset Memory" is automatically completed.

      • *3: Set the transmission compensation code for the new automatic transmission.

      • *4: Read the transmission compensation code from the previous ECM, then transfer it to the new ECM.

      • *5: Set the transmission compensation code of the current automatic transmission.

      • Registration of the transmission compensation code.

        Click here

      • Learning by driving (Road Test).

        Click here

      • Reset Memory.

        Click here

    • Before replacing the ECM, refer to Service Bulletin (for Immobiliser System).

    • Perform Registration (VIN registration) when replacing the ECM.

      Click here

  3. HANDLING PRECAUTIONS

    CAUTION:


    • B003U2T

      Do not perform a stall test if there are any people or objects near the vehicle.

    • The vehicle could begin moving suddenly, resulting in a serious accident.


    • B003TV7

      Do not perform a stall test if any wheel chocks are out of position.

    • The vehicle could begin moving suddenly, resulting in a serious accident.


    • B003WAV

      Do not perform the stall test on a slippery or low-friction surface that could allow the tires to spin.

    • The vehicle could begin moving suddenly, resulting in a serious accident.


    • B003UGD

      Do not blow compressed air without wearing safety glasses.

    • Automatic Transaxle Fluid (ATF) could enter your eyes, possibly resulting in blindness.

    Note


    • The automatic transmission is composed of precision-made parts. Careful inspection before reassembly is necessary because even a small nick could cause fluid leakage or affect performance.

    • The procedures are organized so that you work on only one component group at a time. This will help avoid confusion with similar-looking parts of different sub-assemblies being on your workbench at the same time.

    • The component groups are inspected and repaired from the converter housing side.

    • Whenever possible, complete the inspection, repair and reassembly before proceeding to the next component group. If a defect is found in a certain component group during reassembly, inspect and repair this group immediately. If a component group cannot be assembled because parts are being ordered, be sure to keep all parts of the group in a separate container while proceeding with disassembly, inspection, repair and reassembly of other component groups.

    • Use of Toyota Genuine ATF WS is recommended.

    • All disassembled parts should be washed clean, and compressed air should be blown through any fluid passages and holes.

    • Dry all parts with compressed air. Never use a piece of cloth.

    • The recommended ATF or kerosene should be used for cleaning.

    • After cleaning, the parts should be arranged in the order they were removed for efficient inspection, repair and reassembly.

    • New brake discs and clutch discs must be soaked in ATF for at least 15 minutes before reassembly.

    • All oil seal rings, clutch discs, clutch plates, rotating parts, and sliding surfaces should be coated with ATF prior to reassembly.

    • All old gaskets and rubber O-rings must be replaced.

    • Do not apply adhesive cement to gaskets or similar parts.

    • Make sure that the ends of snap rings are not aligned with any cutouts. Make sure that snap rings are correctly installed into the grooves.

    • If a worn bushing is to be replaced, the sub-assembly containing the bushing must also be replaced.

    • Check the thrust bearings and races for wear or damage. Replace them if necessary.

    • Use petroleum jelly to keep parts in place.