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Home >> Toyota >> 2006 >> Prius >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission >> Hybrid Transaxle System >> On-Vehicle Inspection

On-Vehicle Inspection

  1. CHECK TRANSAXLE FLUID LEVEL 
    NOTE:
    • Insufficient or excessive amounts of transaxle oil may be the cause of some trouble.
    • Place the vehicle on level surface.
    • Use genuine ATF WS.
    1. Remove the filler plug.
    2. Ensure that the transaxle oil level is within 0 to 5 mm (0 to 0.20 in.) of the filler plug hole.
      NOTE: Recheck the transaxle oil level after driving the vehicle when exchanging oil.

      HINT:

      Transaxle fluid quantity: 3.8 liters (4.0 US qts, 3.3 Imp. qts.)

    3. Check for leaks if the quantity of oil is low.
    4. Install the filler plug with a new gasket.

      Torque: 39 N*m (400 kgf*cm, 29 ft.*lbf) 

      Fig 1: Identifying Transaxle Fluid Level
      G04474032Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT OIL PRESSURE 
    NOTE: Perform the test at normal operating oil temperature 50 to 80°C (122 to 176°F).
    1. Lift up the vehicle.
    2. Remove the fluid pump cover plug and install SST.

      SST 09992-00095 (09992-00112, 09992-00271) 

    3. Set the blower switch to HI.
    4. Turn the A/C switch on.
    5. Push the power switch with the brake pedal depressed to start the engine (start the hybrid system).
    6. Keeping the engine speed of 1,200 rpm, measure the oil pressure.

      Standard oil pressure: 9.8 kPa (0.1 kgf/cm 2  , 1.4 psi) or more 

      Fig 2: Attaching SST To Fluid Pump Cover Plug Hole
      G04474033Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Install a new O-ring and fluid pump cover plug.

      Torque: 7.4 N*m (75 kgf*cm, 65 in.*lbf) 

      Fig 3: Installing Fluid Pump Cover Plug
      G04474034Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT SHIFT LEVER 
    1. Inspect the shift lever operation with the hybrid system operating.
      1. Carry the key into the indoor electrical key oscillator detection area or insert the key in the key slot.
      2. Turn the power switch ON (READY ON) while depressing the brake pedal.

        Check that the gear changes according to the shift operation pattern. If the check result is abnormal, replace the shift lever assembly.

        HINT:

        The shift operation pattern in power switch ON (READY ON) (when the vehicle is stopped) is shown below.

        Fig 4: Turning Power Switch ON
        G04474035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Fig 5: Shift Lever Operation Chart
        G04474036Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the power switch OFF when the vehicle is stopped.
      Fig 6: Turning Power Switch OFF
      G04474037Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Inspect the shift lever operation with the power switch's power mode ON (IG).
      1. Carry the key into the indoor electrical key oscillator detection area or insert the key in the key slot.
        Fig 7: Inserting Key In Key Slot
        G04474038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Turn the power switch ON (IG) without depressing the brake pedal.

      HINT:

      The power switch's power mode changes between OFF, ON (ACC) and ON (IG) each time the power switch is pressed.

    5. Check that the gear changes according to the shift operation pattern. If the check result is not as specified, replace the shift lever assembly.

      HINT:

      The shift operation pattern with the power switch's power mode ON (IG) is shown below.

      Fig 8: Turning Power Switch ON (IG) Without Depressing Brake Pedal
      G04474039Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 9: Shift Lever Operation Chart
      G04474040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002