Procedures
K41B CVT: CONTINUOUSLY VARIABLE TRANSAXLE FLUID: ADJUSTMENT
NOTICE:
* This transmission requires Toyota Genuine CVT Fluid TC.
* Make sure that the vehicle is level when inspecting the fluid level.
(The front-to-rear inclination angle must be within +/- 1° from horizontal.)
* Allow the fluid to cool to room temperature before performing any of these procedures.
1. ADD CVT FLUID
HINT
Refer to the following diagram when adding fluid.
(a) When adding fluid (large fill volume) *1
(1) Be sure that the vehicle remains level and lift the vehicle.
(2) Use a socket hexagon wrench (6 mm) to remove the drain plug and gasket.
(3) Use a socket hexagon wrench (6 mm) to check that the No. 1 transmission oil filler tube is tightened to the specified torque.
Text in Illustration
Torque : 0.8 Nm (8.2 kgf-cm, 7 in-lbf)
NOTICE:
If the No. 1 transmission oil filler tube is not tightened to the specified torque, then the fluid level cannot be adjusted correctly.
(4) Remove the refill plug and gasket.
(5) Add fluid into the refill hole until it flows out from the overflow hole.
NOTICE:
This transmission requires Toyota Genuine CVT Fluid TC.
(6) Wait until the steady flow slows to a trickle, install a gasket, and temporarily tighten the drain plug with a socket hexagon wrench (6 mm).
HINT
Because the drain plug will be removed again, the gasket can be reused at this time.
(7) Fill the specified volume of CVT fluid into the refill hole.
NOTICE:
The fill amount varies depending on the procedures being completed.
Reference Capacity:
(8) Install the gasket and temporarily tighten the refill plug.
HINT
Because the refill plug will be removed again, the gasket can be reused at this time.
Lower the vehicle.
(b) When refilling (small fill volume) *2
(1) Be sure that the vehicle remains level and lift the vehicle.
(2) Remove the refill plug and gasket.
(3) Fill the specified volume of CVT fluid into the refill hole.
Reference Capacity:
(4) Install the gasket and temporarily tighten the refill plug.
HINT
Because the refill plug will be removed again, the gasket can be reused at this time.
(5) Lower the vehicle.
2. FLUID TEMPERATURE CHECK
NOTICE:
The fluid temperature can be confirmed by checking the indicator light in the meter or by using the Techstream. When using the Techstream, it is necessary to change to temperature detection mode in order to idle the vehicle appropriately.
(a) When using the Techstream
(1) Turn the ignition switch off.
(2) Connect the Techstream to the DLC3.
(3) Turn the ignition switch to ON.
(4) Turn the Techstream on.
(5) Enter the following menus: Powertrain / Engine and ECT / Data List / A/T Oil Temperature 1.
(6) Enter the following menus: Powertrain / Engine and ECT / Active Test / Connect the TC and TE1.
(b) When not using the Techstream
(1) Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
Text in Illustration
SST : 09843-18040
(c) Start the engine.
NOTICE:
Check that electrical systems such as the air conditioning system, audio system and lighting system are off.
HINT
Indicator lights of the meter blink to output DTCs when terminals TC and CG are connected.
(d) Slowly move the shift lever from P to B and back to P again.
HINT
Hold the shift lever in each position for about 3 seconds.
(e) Move the shift lever to D, and then continuously move the shift lever back and forth between N and D at a rate of 1 shift/1.5 seconds or faster for 6 seconds or more. This will activate the fluid temperature detection mode.
Standard condition:
The indicator light (D) remains illuminated for 2 seconds and then turns off.
(f) Return the shift lever to P.
(g) The indicator light (D) remains off, illuminates, or blinks depending on the fluid temperature.
Indicator Light (D):
(h) If the indicator remains off or illuminates, disconnect the TC terminal and perform the "Fluid Level Check".
NOTICE:
* If the TC terminal is not OFF (open), accurate fluid level adjustment is not possible, so be sure to disconnect this terminal.
* If the TC terminal is not OFF (open), in some cases, the fluid temperature reading will immediately exceed the proper temperature for adjustment.
* If the light is blinking, stop the engine, wait for the fluid temperature to decrease, and repeat the procedure from "Fluid Temperature Check".
3. FLUID LEVEL CHECK
(a) Idle the engine to warm it up, and ensure that the fluid temperature is correct.
(b) Lift the vehicle immediately after the indicator light (D) illuminates.
NOTICE:
Adjust the fluid level while the indicator light (D) is illuminated.
(c) Use a socket hexagon wrench (6 mm) to remove the drain plug and gasket, and then check the fluid condition.
HINT
* Check that the fluid flows out from the overflow tube.
* If the volume of fluid that flows out is small, it is possible that fluid was remaining in the tube (about 5 cc (0.30512 cu in.)), so assume that there was no overflow.
(d) If the fluid overflows
(1) Wait until the steady flow slows to a trickle, and then use a socket hexagon wrench (6 mm) to install a new gasket and tighten the drain plug.
Torque : 40 Nm (408 kgf-cm, 30 ft-lbf)
(2) Replace the refill plug with a new gasket and tighten the refill plug.
Torque : 49 Nm (500 kgf-cm, 36 ft-lbf)
(e) If the fluid does not overflow
(1) Remove the refill plug and gasket.
(2) Add fluid into the refill hole until it flows out from the overflow hole.
NOTICE:
This transmission requires Toyota Genuine CVT Fluid TC.
(3) Wait until the steady flow slows to a trickle, and then install a new gasket and tighten the drain plug.
Torque : 40 Nm (408 kgf-cm, 30 ft-lbf)
(4) Install a new gasket and fully tighten the refill plug.
Torque : 49 Nm (500 kgf-cm, 36 ft-lbf)
(f) Lower the vehicle.
(g) Turn the ignition switch off and disconnect the Techstream.
4. INSPECT FOR CONTINUOUSLY VARIABLE TRANSAXLE FLUID LEAK
(a) Clean the area and check for fluid leaks.