UB80F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE ASSEMBLY: REMOVAL; 2021 - 2022 MY Avalon [08/2020

Last Modified: 08-21-2023	6.11:8.1.0	Doc ID: RM100000001PSDN
Model Year Start: 2021	Model: Avalon	Prod Date Range: [08/2020 - ]
Title: UB80F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE ASSEMBLY: REMOVAL; 2021 - 2022 MY Avalon [08/2020 - ]

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during automatic transaxle assembly removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed	Link
1: When performing learning using the Techstream. Click here 2: Not necessary when ECM replaced with new one. *3: If the vehicle height has changed due to suspension or tire replacement.
Battery terminal is disconnected/reconnected	Perform steering sensor zero point calibration	Lane Departure Alert System (w/ Steering Control)
		Pre-collision System
		Intelligent Clearance Sonar System*1
		Lighting System (for HV Model with Cornering Light)
	Memorize steering angle neutral point	Parking Assist Monitor System
	Memorize steering angle neutral point	Panoramic View Monitor System
Replacement of engine assembly Gas leak from exhaust system is repaired	Inspection after repair	Poor idle, etc. Engine start function, etc.
Replacement of ECM	Vehicle Identification Number (VIN) registration	MIL comes on
	ECU communication ID registration (Immobiliser system)	Engine start function
	Code registration (Smart Key System (for Start Function, Gasoline Model))	Wireless Door Lock Control System Smart Key System (for Entry Function, Gasoline Model) Smart Key System (for Start Function, Gasoline Model) Steering lock function
Replacement of automatic transaxle assembly	Perform reset memory Input transaxle compensation code into ECM Perform road test to allow ECM to learn	Large shift shock Deterioration of fuel efficiency	for UB80F Initialization for UB80F Registration
Replacement of ECM (If transaxle compensation code read from ECM)	Perform reset memory*2 Transfer transaxle compensation code Perform road test to allow ECM to learn
Replacement of ECM (If transaxle compensation code not read from ECM)	Perform reset memory*2 Reset transaxle compensation code Perform road test to allow ECM to learn
Replacement of automatic transaxle fluid	ATF thermal degradation estimate reset	The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly
Suspension, tires, etc.*3 (The vehicle height changes because of suspension or tire replacement)	Measure ultrasonic sensor detection angle Ultrasonic sensor detection angle registration	Intelligent Clearance Sonar System Intuitive Parking Assist System
	Rear television camera assembly optical axis adjustment (Back camera position setting)	Parking Assist Monitor System	for Initialization for Calibration
Replacement of front bumper assembly	Front television camera view adjustment	Panoramic View Monitor System	for Initialization for Calibration
Suspension, tires, etc.*3 (The vehicle height changes because of suspension or tire replacement)	Parking assist ECU initialization Adjust steering angle Television camera assembly optical axis adjustment (Back camera position setting)	Panoramic View Monitor System	for Initialization for Calibration
Front wheel alignment adjustment	Perform system variant learning and acceleration sensor zero point calibration.	VSC is disabled or malfunctions DTCs are output Slip indicator light illuminates ABS warning light illuminates

CAUTION:

The engine assembly with transaxle is very heavy. Be sure to follow the procedure described in the repair manual, or the engine lifter may suddenly drop or the engine assembly with transaxle may fall off the engine lifter.

*a	An Object Exceeding Weight Limit of Engine Lifter

To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.

The automatic transaxle assembly is very heavy. Be sure to follow the procedure described in the repair manual, or the transmission jack may suddenly drop.

*a	An Object Exceeding Weight Limit of Transmission Jack

PROCEDURE

1. REMOVE ENGINE ASSEMBLY WITH TRANSAXLE

Click here

2. REMOVE FLYWHEEL HOUSING UNDER COVER

Click here

3. REMOVE DRIVE PLATE AND TORQUE CONVERTER ASSEMBLY SETTING BOLT

(a) Turn the crankshaft to gain access to the 6 drive plate and torque converter assembly setting bolts and remove each drive plate and torque converter assembly setting bolt while holding the crankshaft pulley bolt with a wrench.

HINT:

There will be one black colored drive plate and torque converter assembly setting bolt.

4. DISCONNECT VACUUM HOSE

(a) Disconnect the vacuum hose from the vacuum hose connector.

(b) Disengage the 5 clamps to disconnect the vacuum hose from the automatic transaxle assembly.

5. REMOVE FLOW SHUTTING VALVE (NO. 1 WATER BY-PASS HOSE)

Click here

6. DISCONNECT WATER BY-PASS HOSE ASSEMBLY

(a) Slide the clip and disconnect the water by-pass hose assembly from the transmission oil cooler.

HINT:

Use a container to catch any coolant which flows out of the water by-pass hose assembly and transmission oil cooler.

7. REMOVE BREATHER PLUG HOSE

(a) Disengage the hose clamp to disconnect the breather plug hose.

(b) Using a screwdriver with its tip wrapped with protective tape, remove the breather plug hose from the No. 1 breather plug (ATM).

NOTICE:

Be careful not to damage the No. 1 breather plug (ATM).

NOTICE:

Be careful not to damage the breather plug sub-assembly.

*1	Breather Plug Sub-assembly
*2	Breather Plug Hose

8. REMOVE STEERING GEAR HEAT INSULATOR

Click here

9. DISCONNECT WIRE HARNESS

(a) Disengage the claw, rotate the lever and disconnect the connector of the transmission wire connector.

(b) Disconnect the park/neutral position switch assembly connector.

(c) Disengage the wire harness clamp and disconnect the vacuum switching valve (for active control engine mount system) connector.

(d) Disconnect the rack and pinion power steering gear assembly connector.

HINT:

Release the lock before rotating the lock lever.

(e) Remove the 2 bolts to disconnect the wire harness from the rack and pinion power steering gear assembly.

(f) Remove the bolt.

(g) Disengage the 9 wire harness clamps to disconnect the wire harness.

(h) Remove the 2 bolts.

(i) Disengage the wire harness clamp to disconnect the wire harness from the automatic transaxle assembly.

10. REMOVE FUEL DELIVERY GUARD

Click here

11. REMOVE FUEL PUMP PROTECTOR

Click here

12. INSTALL ENGINE HANGERS

Click here

13. REMOVE FRONT FRAME ASSEMBLY

Click here

14. REMOVE FRONT ENGINE MOUNTING BRACKET

(a) Remove the 3 bolts and front engine mounting bracket from the transaxle housing.

15. REMOVE FLYWHEEL HOUSING SIDE COVER

Click here

16. REMOVE STARTER ASSEMBLY

(a) Disconnect the starter assembly connector.

(b) Open the terminal cap.

(d) Remove the 2 bolts and starter assembly from the cylinder block sub-assembly.

17. REMOVE AUTOMATIC TRANSAXLE ASSEMBLY

(a) Support the automatic transaxle assembly with a transmission jack.

NOTICE:

Secure the automatic transaxle assembly to the transmission jack using a suitable adapter, such as a rope or attachment.

(b) Remove the 8 bolts and automatic transaxle assembly.

NOTICE:

To prevent damage to the knock pins, do not pry between the automatic transaxle assembly and engine assembly.

18. REMOVE REAR NO. 2 ENGINE MOUNTING INSULATOR

(a) Remove the 5 bolts and rear No. 2 engine mounting insulator from the automatic transaxle case sub-assembly.

19. REMOVE PROPELLER SHAFT HEAT INSULATOR

(a) Remove the 3 bolts and propeller shaft heat insulator from the rear No. 2 engine mounting bracket and transfer assembly.

20. REMOVE REAR ENGINE MOUNTING BRACKET SUB-ASSEMBLY

(a) Remove the 4 bolts and rear engine mounting bracket sub-assembly from the transaxle housing.

21. DISCONNECT OUTLET NO. 1 OIL COOLER HOSE

Click here

22. DISCONNECT INLET NO. 1 OIL COOLER HOSE

Click here

23. REMOVE NO. 1 OIL COOLER TUBE SUB-ASSEMBLY WITHOUT HOSE

Click here

24. REMOVE TRANSMISSION OIL COOLER

Click here

25. REMOVE NO. 1 TRANSMISSION CONTROL CABLE BRACKET

(a) Remove the 2 bolts and No. 1 transmission control cable bracket from the automatic transaxle case sub-assembly.

26. REMOVE TRANSMISSION CASE PLUG ASSEMBLY

(a) Remove the transmission case plug assembly from the transaxle housing.

27. REMOVE WIRE HARNESS CLAMP BRACKET

(a) Remove the bolt and wire harness clamp bracket from the automatic transaxle case sub-assembly.

(b) Remove the bolt and wire harness clamp bracket from the automatic transaxle case sub-assembly.

(c) Remove the 4 bolts and 4 wire harness clamp brackets from the automatic transaxle case sub-assembly and transmission case side cover.

28. REMOVE TRANSMISSION VIBRATION CONTROL RUBBER

(a) Remove the 2 transmission vibration control rubbers from the transmission case side cover.

29. REMOVE TRANSFER ASSEMBLY

Click here

30. REMOVE TRANSFER AND TRANSAXLE SETTING STUD BOLT

(a) Using 2 nuts, remove the 4 transfer and transaxle setting stud bolts from the transaxle housing.

31. REMOVE TORQUE CONVERTER ASSEMBLY

(a) Remove the torque converter assembly from the automatic transaxle assembly.

32. INSPECT TORQUE CONVERTER ASSEMBLY

Click here

33. INSPECT DRIVE PLATE AND RING GEAR SUB-ASSEMBLY

Click here

34. REMOVE REAR NO. 2 ENGINE MOUNTING BRACKET

HINT:

Perform this procedure only when replacement of the rear No. 2 engine mounting bracket or rear engine mounting bracket is necessary.

(a) Remove the 2 bolts and rear No. 2 engine mounting bracket from the rear engine mounting bracket.