CONTINUOUSLY VARIABLE TRANSAXLE FLUID ADJUSTMENT

PROCEDURE

PRECAUTIONS AND WORK DESCRIPTION
1. The K312 continuously variable transaxle does not have an oil filler tube or oil level gauge. When adding fluid, add fluid through the refill hole in the transaxle case. The fluid level can be adjusted by draining excess fluid (allowing excess fluid to overflow) through the No. 1 transmission oil filler tube of the oil pan.
  
  Tech Tips
  
  "Overflow" indicates the condition under which fluid comes out of the overflow plug hole.
2. When adding fluid, add the specified amount of fluid while the engine is cold. Then, warm up the engine to circulate the fluid in the transaxle and adjust the fluid level with the engine idling at the specified fluid temperature.
3. The K312 continuously variable transaxle requires Toyota Genuine CVT fluid FE.
4. When adjusting the fluid level, park the vehicle on level ground (make sure that the tilt angle from the front to rear of the vehicle is within +/-1°).
5. When adjusting the fluid level, turn off all electrical systems, such as the air conditioning, lighting system, electric fan and audio system, to reduce load.
6. The fluid temperature shown in the text is "A/T Oil Temperature 1" displayed on the GTS.
7. Fluid level adjustment should be performed according to the following procedure and notes.
WORK FLOW
1. The adjustment should be performed according to the procedure referenced in the work flow below.
PREPARATION WORK

Note

If the transaxle is hot (fluid temperature is high), wait until the fluid temperature becomes the same as the ambient temperature before starting the following procedure (recommended fluid temperature: approximately 20°C [68°F]).
1. Lift the vehicle.
  
  Note
  
  Set the vehicle on a lift so that the vehicle is kept level when it is lifted up (make sure that the tilt angle from the front to rear of the vehicle is within +/-1°).
2. Remove the engine undercover LH.

PERFORM INITIAL FILLING

Note

After performing either of the following operations, it is not necessary to perform the initial filling procedure. Proceed to the Add Specified Amount of Fluid procedure (Step 5).

Operations that do not Require Initial Filling
Repair of a fluid leak, etc. Changing the transaxle assembly with torque converter to a new one.

Remove the refill plug and gasket from the continuously variable transaxle.
Using a 6 mm hexagon socket wrench, remove the overflow plug and gasket from the continuously variable transaxle.
Note
- If fluid comes out after removing the overflow plug, wait until the fluid flow slows and only drops come out.
- If fluid comes out, it is not necessary to perform the initial filling procedure. After checking the tightening torque of the No. 1 transmission oil filler tube, temporarily install the overflow plug.
Text in Illustration

*1 No. 1 Transmission Oil Filler Tube

Using a 6 mm hexagon socket wrench, check that the No. 1 transmission oil filler tube is tightened to the specified torque.

Torque:

1.7 N*m { 17 kgf*cm, 15 in.*lbf }

Note

If the No. 1 transmission oil filler tube is not tightened to the specified torque, the amount of fluid cannot be precisely adjusted.

Tech Tips

To check the torque of the No. 1 transmission oil filler tube, insert the hexagon socket into the overflow plug hole.
Perform initial filling.
1. Add fluid to the refill hole until it flows out of the overflow plug hole.
  
  Note
  
  Use Toyota Genuine CVT fluid FE.
Wait until the fluid flow slows and only drips come out.
Temporarily install the gasket and overflow plug.

Tech Tips

Reuse the old gasket as the plug will be removed again to adjust the fluid level.

Text in Illustration
*1	No. 1 Transmission Oil Filler Tube

ADD SPECIFIED AMOUNT OF FLUID

Remove the refill plug and gasket from the continuously variable transaxle (when initial filling was not performed).

Add fluid to the refill hole using the correct amount of fluid as listed in the table below.

Note

The refill amount differs depending on the operation that was performed.

Standard Capacity

Operation Performed		Fill Amount
Removal and installation of the oil pan or fluid drain and refill.		1.2 liters (1.3 US qts, 1.1 Imp. qts)
Removal and installation of the drive shaft.
Changing the oil seal to a new one.
Removal and installation of the oil cooler.
Removal and installation of the torque converter.	(A new torque converter has been installed)	2.7 liters (2.9 US qts, 2.4 Imp. qts)
Removal and installation of the torque converter.	(The old torque converter has been reused)	2.3 liters (2.4 US qts, 2.0 Imp. qts)
Changing the transaxle assembly to a new one (transaxle assembly without torque converter).	(A new torque converter has been installed)	3.0 liters (3.2 US qts, 2.6 Imp. qts)
	(The old torque converter has been reused)	2.7 liters (2.9 US qts, 2.4 Imp. qts)
Changing the transaxle assembly with torque converter to a new one.		3.2 liters (3.4 US qts, 2.8 Imp. qts)
Repair of a fluid leak, etc.		0.4 liters (0.4 US qts, 0.4 Imp. qts)

Temporarily install the gasket and refill plug to avoid fluid spillage.

Tech Tips

Reuse the old gasket as the plug will be removed again to adjust the fluid level.
Lower the vehicle.

ADJUST FLUID TEMPERATURE

When using the GTS:
1. Connect the GTS to the DLC3 with the ignition switch off.
2. Turn the ignition switch to ON and turn the GTS on.
3. Enter the following menus: Powertrain / Engine and ETC / Active Test / Connect the TC and TE1.
4. Select the Data List item: A/T Oil Temperature 1.
5. According to the display on the GTS, perform the Active Test "Connect the TC and TE1 / ON".
  
  Tech Tips
  
  The indicator lights on the combination meter blink to indicate that a DTC has been stored when the Active Test "Connect the TC and TE1 / ON" is performed.
When not using the GTS:
1. Text in Illustration
  
  *a Front view of DLC3
  
  Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3 with the ignition switch off.
  
  SST
  
  09843-18040
Depress and hold the brake pedal.
Start the engine.

Note

To reduce load, make sure that all electrical systems, such as the air conditioning, lighting system, electric fan and audio system, are off.
Slowly move the shift lever from P to D, and then back to P (keep the shift lever in each position for approximately 3 seconds).

Tech Tips

Slowly move the shift lever to circulate the fluid through each part of the transaxle.

Text in Illustration
*a	Front view of DLC3

Text in Illustration
*a	Shift position
*b	Indication of shift position
*c	Fluid temperature detection mode
*d	6 sec. or more
*e	2 sec.
*f	Less than 1.5 sec.

While observing the D shift indicator on the combination meter, move the shift lever back and forth between N and D at an interval of less than 1.5 seconds for 6 seconds or more.

Note

Do not pause for more than 1.5 seconds.

Tech Tips

Performing this operation will cause the vehicle to enter fluid temperature detection mode.

Check that the D shift indicator comes on for 2 seconds.
Tech Tips
- When fluid temperature detection mode is activated, the D shift indicator on the combination meter comes on for 2 seconds.
- If the D shift indicator does not come on for 2 seconds, return to the first step and perform the procedure again.
Move the shift lever to P.
Release the brake pedal.
Disconnect the terminals of the DLC3.
1. When using the GTS:
  - According to the display on the GTS, perform the Active Test "Connect the TC and TE1 / OFF".
2. When not using the GTS:
  - Remove SST from terminals 13 (TC) and 4 (CG).
  Note
  
  Make sure that terminals 13 (TC) and 4 (CG) are not connected. If the terminals are connected, the fluid level cannot be precisely adjusted due to fluctuations in engine speed.
  Tech Tips
  - Disconnecting the terminals activates engine idle speed control mode.
  - In engine idle speed control mode, engine idle speed control starts when the fluid temperature reaches the specified value and the engine speed is maintained.
  - Even after the terminals are disconnected, fluid temperature detection mode remains active until the ignition switch is turned off.

Adjust the fluid temperature to the fluid level adjustment temperature.

Check the fluid temperature by monitoring the D shift indicator.
Tech Tips
- In fluid temperature detection mode, the D shift indicator comes on, goes off, or blinks depending on the fluid temperature.
- The fluid filling procedure should be performed when the D shift indicator is on (the fluid temperature is within the fluid level adjustment temperature range).

Adjust the fluid temperature.

If the D shift indicator is off [Below Fluid Level Adjustment Temperature: 35°C (95°F) or less]: Warm up the engine with the engine idling in engine idle speed control mode until the D shift indicator turns on.

If the D shift indicator is on [Fluid Level Adjustment Temperature: 35 to 45°C (95 to 113°F)]: Immediately proceed to the Adjust Fluid Level procedure (Step 7).

If the D shift indicator is blinking [Above Fluid Level Adjustment Temperature: 45°C (113°F) or more]: Stop the engine and wait until the fluid temperature drops to 35°C (95°F) or less (the D shift indicator goes off). Then perform the Adjust Fluid Temperature procedure again from the beginning.

Relationship between Fluid Level Adjustment Temperature and the D Shift Indicator

	Below Fluid Level Adjustment Temperature	Fluid Level Adjustment Temperature	Above Fluid Level Adjustment Temperature
Fluid Temperature ("A/T Oil Temperature 1" displayed on the GTS)	35°C (95°F) or less	35 to 45°C (95 to 113°F)	45°C (113°F) or more
D Shift Indicator	Off	On	Blinks

ADJUST FLUID LEVEL
CAUTION:

Use caution while the engine is idling and the radiator fan is operating.
1. Lift the vehicle.
  
  Note
  
  Set the vehicle on a lift so that the vehicle is kept level when it is lifted up (make sure that the tilt angle from the front to rear of the vehicle is within +/-1°).
2. Using a 6 mm hexagon socket wrench, remove the overflow plug and gasket.
  
  CAUTION:
  
  Be careful as the fluid coming out of the overflow plug hole is hot.
3. Check the amount of fluid that comes out of the overflow plug hole.
  - If the amount of fluid that comes out of the overflow plug hole is large, proceed to *1.
  - If no fluid comes out of the overflow plug hole, proceed to *2.
  Note
  
  If only a small amount of fluid (approximately 5 cc) comes out of the overflow plug hole, then only fluid remaining in the No. 1 transmission oil filler tube has come out. This is not considered to be overflow.
4. *2:
  
  If no fluid comes out of the overflow plug hole, remove the refill plug and gasket. Then add transaxle fluid through the refill hole until fluid comes out of the overflow plug hole. Wait until the fluid flow slows and only drips come out.
  
  Note
  
  Use Toyota Genuine CVT fluid FE.
5. *1:
  
  If the amount of fluid that comes out of the overflow plug hole is large, wait until the fluid flow slows and only drips come out.
  
  Tech Tips
  
  The fluid flow will not stop completely because the fluid continues to expand as its temperature increases.
6. Install a new gasket and the overflow plug.
  
  Torque:
  
  40 N*m { 408 kgf*cm, 30 ft.*lbf }
7. Install a new gasket and the refill plug.
  
  Torque:
  
  49 N*m { 500 kgf*cm, 36 ft.*lbf }
8. Lower the vehicle.
9. Turn the ignition switch off.
  
  Tech Tips
  
  Turning the ignition switch off exits fluid temperature detection mode.
10. Remove the GTS from the DLC3 (when using the GTS).
REBUILD WORK
1. Lift the vehicle.
2. Clean each part.
3. Check for fluid leaks.
4. Install the engine under cover LH.
5. Lower the vehicle.