Fluid - A/T: Service and Repair
U760E AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSAXLE FLUID: ADJUSTMENT
1. PRECAUTIONS AND WORK DESCRIPTION
(a) The U760E automatic 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 overflow tube of the oil pan.
HINT
"Overflow" indicates the condition under which fluid comes out of the overflow plug hole.
(b) 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. Make sure that the fluid temperature is as specified and that the engine is idling.
(c) The U760E automatic transaxle requires Toyota Genuine ATF WS.
(d) The adjustment should be performed according to the following procedures and notes.
2. WORK FLOW
(a) The adjustment should be performed according to the procedures referenced in the work flow below.
3. BEFORE FILLING TRANSAXLE WITH FLUID
(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 rear engine under cover LH.
4. PERFORM INITIAL FILLING
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: approximately 20°C [68°F]).
(a) Remove the refill plug and gasket from the automatic transaxle.
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.
(b) Using a 6 mm hexagon socket wrench, remove the overflow plug and gasket from the automatic transaxle.
Text in Illustration
NOTICE:
* If ATF comes out after removing the overflow plug, wait until the fluid flow slows and only drops 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 install 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
Torque : 0.8 Nm (8 kgf-cm, 7 in-lbf)
NOTICE:
If the transmission 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 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.
NOTICE:
Use Toyota Genuine ATF WS.
(e) Wait until the fluid flow slows and only drops come out.
(f) Temporarily install the overflow plug.
HINT
Reuse the old gasket. The plug will be removed again to adjust the fluid level.
5. ADD SPECIFIED AMOUNT OF FLUID
(a) Fill the transaxle with the correct amount of fluid as listed in the table below.
NOTICE:
The refill amount differs depending on the operation that was performed.
Standard Capacity:
(b) Temporarily install the refill plug to avoid fluid spillage.
HINT
Reuse the old gasket. The plug will be removed again to adjust the fluid level.
(c) Lower the vehicle.
6. ADJUST FLUID TEMPERATURE
(a) When using the Techstream:
HINT
The actual ATF temperature can be checked on the Data List using the Techstream.
(1) Connect the Techstream to the DLC3 with the ignition switch off.
(2) 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.
(3) Enter the following menus: Powertrain / ECT / Active Test / Connect the TC and TE1.
(4) Enter the following menus: A/T Oil Temperature 1.
(5) Check A/T Oil Temperature 1.
NOTICE:
* If the fluid temperature is below 35°C (95°F), proceed to the next step (recommended ATF temperature: 30°C [86°F] or less).
* If the fluid temperature is 45°C (113°F) or higher, turn the ignition switch off and wait until the fluid temperature drops below 35°C (95°F).
(6) Enter the following menus: Connect the TC and TE1 / ON.
HINT
The indicator lights in the meter will not blink to indicate output DTCs when "Connect the TC and TE1 / ON" is performed.
(7) Depress and hold the brake pedal.
(8) Start the engine.
Slowly move the shift lever from P to D, and then back to P.
HINT
Slowly move the shift lever to circulate the fluid through each part of the transaxle.
While observing the D shift indicator in the combination meter, move the shift lever back and forth between N and D every 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 fluid temperature detection mode.
(11) Check that the D shift indicator comes on for 2 seconds.
HINT
* When fluid temperature detection mode is activated, the D shift indicator in 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 the Active Test "Connect the TC and TE1" is first turned on and perform the procedure again.
(12) Move the shift lever from N to P.
(13) Release the brake pedal.
(14) Enter the following menus: TC and TE1 / OFF.
NOTICE:
Make sure that the Active Test "Connect the TC and TE1" is not turned on. If the Active Test is on, the fluid level cannot be precisely adjusted due to fluctuations in idle speed.
HINT
* Turning off the Active Test "Connect the TC and TE1" activates engine idle speed control mode.
* In engine idle speed control mode, engine idle speed control starts when the fluid temperature becomes 35°C (95°F) or higher and the engine speed is maintained at approximately 800 rpm.
* Even after the Active Test "Connect the TC and TE1" is turned off, fluid temperature detection mode is active until the ignition switch is turned off.
(15) Warm up the engine with the engine idling until the fluid temperature reaches the normal operating temperature (35 to 45°C [95 to 113°F]).
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 higher, stop the engine and wait until the fluid temperature drops to 35°C (95°F) or less. Then perform the "Adjust Fluid Temperature" procedure again from the beginning.
HINT
In fluid temperature detection mode, the D shift indicator comes on, goes off, or blinks depending on the fluid temperature.
D Shift Indicator
Text in Illustration
(b) When not using the Techstream:
(1) Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3 with the ignition switch off.
SST : 09843-18040
Text in Illustration
(2) Depress and hold the brake pedal.
(3) Start the engine.
NOTICE:
Check that electrical systems, such as the air conditioning system, audio system and lighting system, are off.
HINT
The indicator lights in the meter blink to indicate output DTCs when terminals TC and CG are connected.
(4) Slowly move the shift lever from P to D, and then back to P.
HINT
Slowly move the shift lever to circulate the fluid through each part of the transaxle.
(5) While observing the D shift indicator in the combination meter, move the shift lever back and forth between N and D every 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 fluid temperature detection mode.
(6) Check that the D shift indicator comes on for 2 seconds.
HINT
* When fluid temperature detection mode is activated, the D shift indicator in 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.
(7) Move the shift lever from N to P.
(8) Release the brake pedal.
Remove SST from terminals 13 (TC) and 4 (CG).
SST : 09843-18040
NOTICE:
Make 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
* When terminals TC and CG are disconnected, engine idle control mode is activated.
* In engine idle speed control mode, engine idle speed control starts when the fluid temperature becomes 35°C (95°F) or higher and the engine speed is maintained at approximately 800 rpm.
* Even after terminals TC and CG are disconnected, fluid temperature detection mode is active until the ignition switch is turned off.
Allow the engine to idle until the D shift indicator comes on again.
D Shift Indicator
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 35°C (95°F) or less (the indicator goes off). Then perform the "Adjust Fluid Temperature" procedure again from the beginning.
HINT
* 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 normal operating temperature range).
7. ADJUST FLUID LEVEL
CAUTION:
Use caution as the engine is running and the radiator fan is operating during the following procedure.
(a) Lift the vehicle.
(b) Adjust the fluid level.
(1) Using a 6 mm hexagon socket wrench, remove the overflow plug and gasket.
CAUTION:
Be careful as the fluid coming out of the overflow hole is hot.
(2) Check the amount of fluid that comes out of the overflow plug hole.
NOTICE:
If only a small amount of fluid (approximately 1 cc) comes out of the overflow hole, then only fluid remaining in the No. 1 transmission oil filler tube has come out. This condition is not considered to be overflow, so it is necessary to add fluid.
(3) If the amount of fluid that comes out of the overflow plug hole is large, wait until the fluid flow slows and only drops come out.
(4) 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 drops come out.
NOTICE:
Use Toyota Genuine ATF WS.
(5) Check that the fluid flow has slowed and only drops come out.
HINT
The fluid flow will not completely stop because the fluid expands as its temperature increases.
(c) Install a new gasket and the overflow plug.
Torque : 40 Nm (408 kgf-cm, 30 ft-lbf)
(d) Install a new gasket and the refill plug.
Torque : 49 Nm (500 kgf-cm, 36 ft-lbf)
(e) Lower the vehicle.
(f) Turn the ignition switch off.
HINT
Turning the ignition switch off exits fluid temperature detection mode.
(g) Disconnect the Techstream from the DLC3 (when using the Techstream).
8. AFTER FILLING TRANSAXLE
(a) Lift the vehicle.
(b) Clean each part.
(c) Check for fluid leaks.
(d) Install the rear engine under cover LH.
(e) Lower the vehicle.