Continuously Variable Transaxle System Mechanical System Tests

Transmission. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
K111F Cvt. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  1. SHIFT TIME LAG TEST

  1. STALL SPEED TEST

Continuously Variable Transaxle System -- Mechanical System Tests



SHIFT TIME LAG TEST
NOTICE:
  1. This test must be conducted after checking and confirming that the engine is operating normally.
  2. Perform this test while the CVT fluid temperature is between 50 and 100°C (122 and 212°F).
  3. Perform this test with the A/C off.
HINT:
When the shift lever is moved while the engine is idling, there will be a certain time lapse or lag before the shock can be felt. This is used for checking the condition of the clutches and brakes.

  1. Connect the intelligent tester to the DLC3.

  2. Start the engine.

  3. Turn the intelligent tester on.

  4. Enter the following menus: Powertrain / Engine and ECT / Data List.

  5. Run the vehicle until the CVT fluid temperature has reached 50 to 100°C (122 to 212°F).

  6. Allow the engine to idle with the air conditioning off.

  7. Set the parking brake and keep the brake pedal depressed firmly.

  8. Check the D position time lag.

    1. Move the shift lever to N and wait for 1 minute.

    2. Move the shift lever to D and measure the time until the shock is felt.

    3. Repeat the 2 steps above 3 times, and calculate the average time of the 3 tests.

      Standard value:
      D position time lag is less than 1.2 seconds

  9. Check the R position time lag.

    1. Move the shift lever to N and wait for 1 minute.

    2. Move the shift lever to R and measure the time until the shock is felt.

    3. Repeat the 2 steps above 3 times, and calculate the average time of the 3 tests.

      Standard value:
      R position time lag is less than 1.5 seconds

STALL SPEED TEST
CAUTION:
  1. The stall speed test should always be performed with at least 2 people. One person should observe the condition of the wheels and wheel chocks while the other is performing the test.
  2. To ensure safety, perform this test in an open and level area that provides good traction.
NOTICE:
  1. The stall speed test should be done on a paved surface (a surface that is not slippery).
  2. Do not perform the stall speed test for more than 5 seconds.
HINT:
This test is to check the overall performance of the engine.

  1. Connect the intelligent tester to the DLC3.

  2. Start the engine.

  3. Turn the intelligent tester on.

  4. Enter the following menus: Powertrain / Engine and ECT / Data List.

  5. Run the vehicle until the CVT fluid temperature has reached 50 to 100°C (122 to 212°F).

  6. Allow the engine to idle with the air conditioning off.

  7. Chock all 4 wheels.

  8. Set the parking brake and keep the brake pedal firmly depressed with your left foot.

  9. Move the shift lever to D.

  10. Depress the accelerator pedal all the way down with your right foot.

  11. Read the engine speed (stall speed) and release the accelerator pedal immediately.

    Standard value:
    2300 +/-300 rpm