U660E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE FLUID: ADJUSTMENT; 2016 MY Sienna [12/2015

Last Modified: 04-05-2023	6.11:8.1.0	Doc ID: RM100000000VIJ6
Model Year Start: 2016	Model: Sienna	Prod Date Range: [12/2015 - 08/2016]
Title: U660E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE FLUID: ADJUSTMENT; 2016 MY Sienna [12/2015 - 08/2016]

ADJUSTMENT

CAUTION / NOTICE / HINT

NOTICE:

Precautions and work description

The U660E automatic transaxle does not have an oil filler tube and oil dipstick. When adding fluid, add fluid through the refill hole on 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.
Before adjusting the fluid level, add the specified amount of fluid when the engine is cold and warm up the engine to circulate the fluid in the transaxle. Ensure that the fluid temperature is as specified and the engine is idling.
The U660E automatic transaxle requires Toyota Genuine ATF WS.
The adjustment should be performed according to the procedures and notes.
HINT:

"Overflow" indicates the condition under which fluid comes out of the overflow plug hole.

HINT:

The adjustment should be performed according to the procedures referenced in the work flow below.

PROCEDURE

1. BEFORE FILLING TRANSAXLE FLUID

NOTICE:

If the transaxle is hot (ATF temperature is high), wait until the fluid temperature becomes the same as the ambient temperature before starting the following procedure. (Recommended ATF temperature: around 20°C [68°F])

(a) Lift the vehicle.

NOTICE:

Set the vehicle on a lift so that the vehicle is kept level when it is lifted up.

(b) Remove the 2 bolts, clip and front fender apron seal LH.

2. PERFORM INITIAL FILLING

NOTICE:

After performing any of the following operations, it is not necessary to perform the initial filling procedure. Proceed to the "Add Specified Amount of Fluid" procedure.

Operations That Do Not Require Initial Filling:

Oil cooler tube or oil cooler hose removal/installation

Repair of oil seeping or oozing

(a) Remove the refill plug and gasket from the automatic transaxle.

(b) Using a 6 mm hexagon socket wrench, remove the overflow plug and gasket from the automatic transaxle.

NOTICE:

If ATF comes out after removing the overflow plug, wait until the fluid flow slows and only drips come out.
If ATF 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 tighten the overflow plug.

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

Text in Illustration

*1	No. 1 Transmission Oil Filler Tube
*a	Overflow Plug Hole

Torque:

1.7 N·m {17 kgf·cm, 15 in·lbf}

NOTICE:

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

HINT:

To check the torque of the No. 1 transmission oil filler tube, insert the 6 mm hexagon socket wrench into the overflow plug hole.

(d) Perform initial filling.

(1) Fill the transaxle through the refill hole until fluid begins to trickle out of the overflow plug hole.

(e) Wait until the fluid flow slows and only drips come out.

(f) Using a 6 mm hexagon socket wrench, temporarily install the gasket and the overflow plug.

HINT:

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

3. ADD SPECIFIED AMOUNT OF FLUID

(a) Fill the transaxle with the correct amount of fluid as listed in the table below.

NOTICE:

Refill amount differs depending on the operation that was performed.

Reference Capacity:

Related Procedure	Fill Volume
Transaxle replacement (with a new torque converter)	5.3 liters (5.6 US qts, 4.7 Imp. qts)
Transaxle replacement (when reusing the torque converter)	3.4 liters (3.6 US qts, 3.0 Imp. qts)
Torque converter removal/installation	4.8 liters (5.1 US qts, 4.2 Imp. qts)
Transmission valve body removal/installation	3.2 liters (3.4 US qts, 2.8 Imp. qts)
Oil pan removal/installation	2.8 liters (3.0 US qts, 2.5 Imp. qts)
Drive shaft removal/installation	2.8 liters (3.0 US qts, 2.5 Imp. qts)
Transaxle case oil seal removal/installation	2.8 liters (3.0 US qts, 2.5 Imp. qts)
Oil cooler tube or oil cooler hose removal/installation	0.5 liters (0.5 US qts, 0.4 Imp. qts)
Repair of oil seeping or oozing	0.5 liters (0.5 US qts, 0.4 Imp. qts)

(b) Temporarily install the refill plug to avoid fluid spillage.

HINT:

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

4. ADJUST FLUID TEMPERATURE (for Using the Techstream)

HINT:

The actual ATF temperature can be checked on the Data List using the Techstream.

(a) Connect the Techstream to the DLC3 with the ignition switch off.

(b) Turn the ignition switch to ON and turn the Techstream on.

NOTICE:

Check that electrical systems such as the air conditioning system, audio system and lighting system are off.

Powertrain / ECT / Active Test / Connect the TC and TE1

(d) Select the Active Test menu:

Connect the TC and TE1 / ON

(e) Select the Data List menu:

A/T Oil Temperature 1

(f) Check the ATF temperature.

NOTICE:

If the fluid temperature is below 45°C (113°F), proceed to the next step. (Recommended ATF temperature: 40°C [104°F] or less)
If the fluid temperature is 45°C (113°F) or more, turn the ignition switch off and wait until the fluid temperature drops below 45°C (113°F).

(g) Depress and hold the brake pedal.

(h) Start the engine.

(i) Slowly move the shift lever from P to D, then back to P.

HINT:

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

(j) 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 1.5 seconds for 6 seconds or more.

NOTICE:

Do not pause for more than 1.5 seconds.

HINT:

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

(k) Check that the D shift indicator comes on for 2 seconds.

HINT:

When the 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 step where terminal TC is first connected and perform the procedure again.

(l) Move the shift lever from N to P.

(m) Release the brake pedal.

(n) Select the Active Test menu:

Connect the TC and TE1 / OFF

NOTICE:

Be sure that terminals TC and TE1 are not connected. If the terminals are connected, the fluid level cannot be precisely adjusted due to fluctuations in engine speed.

HINT:

Disconnecting terminals TC and TE1 activates the engine idle speed control mode.
In the engine idle speed control mode, engine idle speed control starts when the fluid temperature becomes 35°C (95°F) or more and the engine speed is maintained at approximately 800 rpm.
Even after terminals TC and TE1 are disconnected, the fluid temperature detection mode is active until the ignition switch off.

(o) Warm up the engine with the engine idling until the fluid temperature reaches the normal operating temperature (40 to 45°C [104 to 113°F]).

Below Normal Operating Temperature

Normal Operating Temperature

Above Normal Operating Temperature

40°C or less (104°F or less)

40 to 45°C (104 to 113°F)

45°C or more (113°F or more)

Shift Indicator [D]

Turn off

Shift Indicator [D]

Turn on

Shift Indicator [D]

Blinking

NOTICE:

If the fluid temperature is within the normal operating temperature range, immediately proceed to the "Adjust Fluid Level" procedure.
If the fluid temperature is 45°C (113°F) or more, stop the engine and wait until the fluid temperature drops to 40°C (104°F) or less. Then perform the "Adjust Fluid Temperature" procedure again from the beginning.

HINT:

In the fluid temperature detection mode, the D shift indicator comes on, goes off, or blinks depending on the fluid temperature.

5. ADJUST FLUID TEMPERATURE (for not Using the Techstream)

(a) Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3 with the ignition switch off.

Text in Illustration

DLC3

SST: 09843-18040

(b) Depress and hold the brake pedal.

NOTICE:

Check that electrical systems such as the air conditioning system, audio system and lighting system are off.

HINT:

The indicator lights on the combination meter blink to indicate the DTC output when terminals TC and CG are connected.

(d) Slowly move the shift lever from P to D, then back to P.

HINT:

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

(e) 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 1.5 seconds for 6 seconds or more.

NOTICE:

Do not pause for more than 1.5 seconds.

HINT:

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

(f) Check that the D shift indicator comes on for 2 seconds.

HINT:

When the 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 step where terminal TC is first connected and perform the procedure again.

(g) Move the shift lever from N to P.

(h) Release the brake pedal.

(i) Remove SST from terminals 13 (TC) and 4 (CG).

NOTICE:

Be sure that terminals TC and CG are not connected. If the terminals are connected, the fluid level cannot be precisely adjusted due to fluctuations in engine speed.

HINT:

Disconnecting terminals TC and CG activates the engine idle control mode.
In the engine idle speed control mode, engine idle speed control starts when the fluid temperature becomes 35°C (95°F) or more and the engine speed is maintained at approximately 800 rpm.
Even after terminals TC and CG are disconnected, the fluid temperature detection mode is active until the ignition switch is turned off.

(j) Allow the engine to idle until the D shift indicator comes on again.

Below Normal Operating Temperature

Normal Operating Temperature

Above Normal Operating Temperature

40°C or less (104°F or less)

40 to 45°C (104 to 113°F)

45°C or more (113°F or more)

Shift Indicator [D]

Turn off

Shift Indicator [D]

Turn on

Shift Indicator [D]

Blinking

NOTICE:

If the D shift indicator is on, immediately proceed to the "Adjust Fluid Level" procedure.
If the D shift indicator blinks, stop the engine and wait until the fluid temperature drops to 40°C (104°F) or less (the indicator goes off). Then perform the "Adjust Fluid Temperature" procedure again from the beginning.

HINT:

In the fluid temperature detection mode, the D shift indicator comes on, goes off, or blinks depending on the fluid temperature.
Fluid filling procedure should be performed when the D shift indicator is on (the fluid temperature is within the normal operating temperature range).

6. ADJUST FLUID LEVEL

CAUTION:

Use caution while the engine is idling and the radiator fan is operating.

(a) Lift the vehicle.

NOTICE:

Set the vehicle on a lift so that the vehicle is kept level when it is lifted up.

(b) 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.

NOTICE:

If only a small amount of fluid (approximately 1 cc) comes out of the overflow plug hole, then only fluid remaining in the No. 1 transmission oil filler tube has come out. This condition is not considered as overflow, so it is necessary to add fluid.

(d) If the fluid overflows.

(1) Wait until the fluid flow slows and only drips come out.

(2) Remove the refill plug and gasket.

(e) If the fluid does not overflow.

(1) Remove the refill plug and gasket.

(2) Add transaxle fluid through the refill hole until fluid comes out of the overflow plug hole.

(3) Wait until the fluid flow slows and only drips come out.

(f) Install the overflow plug with a new gasket.

Torque:

40 N·m {408 kgf·cm, 30 ft·lbf}

(g) Install the refill plug with a new gasket.

Torque:

49 N·m {500 kgf·cm, 36 ft·lbf}

(h) Lower the vehicle.

(i) Turn the ignition switch off.

HINT:

Turning the ignition switch off exits the fluid temperature detection mode.

(j) Remove the Techstream from the DLC3 (when using the Techstream).

7. AFTER FILLING TRANSAXLE FLUID

(a) Lift the vehicle.

(b) Clean each part.

(d) Install the front fender apron seal LH with the 2 bolts and clip.

(e) Lower the vehicle.