Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Removal

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Steering / Steering Gear / Linkage / Steering Gear(for Gasoline Model) / Removal

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during rack and pinion power steering gear assembly removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

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 Gasoline Model with Cornering Light)

Memorize steering angle neutral point

Parking assist monitor system

Panoramic view monitor system

Replacement of ECM

Vehicle Identification Number (VIN) registration

MIL comes on

Perform code registration (Immobiliser system)

Engine start function

  • Replacement of engine assembly
  • Gas leak from exhaust system is repaired

Inspection after repair
  • Poor idle, etc.
  • Engine start function, etc.

Replacement of automatic transaxle assembly
  1. Reset Memory
  2. Input transaxle compensation code into ECM
  3. Perform road test to allow ECM to learn
  • Large shift shock
  • Deterioration of fuel efficiency

for Initialization:

for Registration:

Replacement of ECM

(If transaxle compensation code read from ECM)
  1. Reset memory*2
  2. Transfer transaxle compensation code
  3. Perform road test to allow ECM to learn

Replacement of ECM

(If transaxle compensation code not read from ECM)
  1. Reset memory*2
  2. Reset transaxle compensation code
  3. 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

Replacement of ECM

Code registration (Smart Key System (for Start Function))
  • Wireless Door Lock Control System
  • Smart Key System (for Entry Function)
  • Smart Key System (for Start Function)
  • Steering lock function

Suspension, tires, etc.
  • 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:

  • 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:

Perform headlight ECU sub-assembly LH initialization

Lighting system (for Gasoline Model with Cornering Light)

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

Rack and pinion power steering gear assembly
  • Perform torque sensor zero point calibration
  • Assist map writing
  • DTCs are output
  • Steering effort different between turning steering wheel left and right
  • EPS warning light illuminates

*1: When performing learning using the Techstream.

Click here

*2: Not necessary when ECM replaced with new one

PROCEDURE

1. PRECAUTION

(a) When handling the rack and pinion power steering gear assembly:

(1) Do not subject the rack and pinion power steering gear assembly (especially the motor and torque sensor) to any impact. Replace the rack and pinion power steering gear assembly with a new one if subjected to a strong impact.

(2) Do not pull the wire harness when moving the rack and pinion power steering gear assembly.

(3) When the rack and pinion power steering gear assembly has been replaced, perform torque sensor zero point calibration.

Click here

(b) When disconnecting or reconnecting the connectors:

(1) Before disconnecting connectors related to the power steering system, turn the engine switch to ON, center the steering wheel, turn the engine switch off, and then disconnect the connectors.

(2) Before reconnecting connectors related to the power steering system, ensure that the engine switch is off. Then center the steering wheel and turn the engine switch to ON.

NOTICE:

Do not turn the engine switch to ON when the steering wheel is not centered.

(3) If the above operations are not carried out properly, the steering center point (zero point) will deviate, which may lead to a difference in steering effort between turning right and left.

HINT:

If there is a difference in steering effort between turning right and left, perform torque sensor zero point calibration.

Click here

2. ALIGN FRONT WHEELS FACING STRAIGHT AHEAD

3. SECURE STEERING WHEEL

(a) Secure the steering wheel with the seat belt in order to prevent rotation.

HINT:

This operation is useful to prevent damage to the spiral cable.

4. REMOVE FRONT WHEELS

Click here

5. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH

Click here

6. REMOVE FRONT WHEEL OPENING EXTENSION PAD RH

Click here

7. REMOVE NO. 1 ENGINE UNDER COVER

Click here

8. REMOVE REAR ENGINE UNDER COVER LH

Click here

9. REMOVE REAR ENGINE UNDER COVER RH

Click here

10. SEPARATE STEERING INTERMEDIATE SHAFT ASSEMBLY

(a) Remove the bolt and slide the steering intermediate shaft assembly.

NOTICE:

Do not separate the steering intermediate shaft assembly from the rack and pinion power steering gear assembly.

*a

Matchmark

(b) Put matchmarks on the rack and pinion power steering gear assembly and steering intermediate shaft assembly.

(c) Separate the steering intermediate shaft assembly from the rack and pinion power steering gear assembly.

11. SEPARATE TIE ROD ASSEMBLY LH

(a) Remove the cotter pin and nut.

(b) Install SST to the tie rod assembly LH as shown in the illustration.

SST: 09960-20010

09961-02060

NOTICE:

Make sure that the upper ends of the tie rod assembly LH and SST are aligned.

(c) Using SST, separate the tie rod assembly LH from the steering knuckle LH as shown in the illustration.

SST: 09960-20010

09961-02010

*a

String

*b

Molybdenum Grease Application Area

*c

Place wrench here

*d

Center Nut

Turn

-

-

CAUTION:

Apply molybdenum grease to the threads and end of the SST bolt.

NOTICE:

  • Be sure to tighten the string firmly to secure SST to the steering knuckle LH to prevent SST from falling off.
  • Install SST with the center nut so that (A) and (B) shown in the illustration are parallel. Otherwise, the ball joint dust cover may be damaged.
  • Be sure to place the wrench on the part shown in the illustration.
  • Do not damage the front disc brake dust cover.
  • Do not damage the ball joint dust cover.
  • Do not damage the steering knuckle LH.

12. SEPARATE TIE ROD ASSEMBLY RH

HINT:

Perform the same procedure as for the LH side.

13. REMOVE ENGINE ASSEMBLY WITH TRANSAXLE

Click here

14. DISCONNECT WIRE HARNESS

(a) Disconnect the wire harness connector from the rack and pinion power steering gear assembly.

HINT:

Release the lock before rotating the lock lever.

(b) Remove the 2 bolts and separate the wire harness from the rack and pinion power steering gear assembly.

15. INSTALL ENGINE HANGERS

Click here

16. REMOVE FRONT FRAME ASSEMBLY

Click here

17. REMOVE FRONT STABILIZER BAR WITH BRACKET

(a) Remove the 2 bolts and separate the front No. 1 stabilizer bracket LH from the front frame assembly.

(b) Remove the 2 bolts and separate the front No. 1 stabilizer bracket RH from the front frame assembly.

HINT:

Perform the same procedure as for the LH side.

(c) Remove the front stabilizer bar with 2 front stabilizer links, front No. 1 stabilizer bracket LH, front No. 1 stabilizer bracket RH and 2 front No. 1 stabilizer bar bushings from the front frame assembly.

18. REMOVE RACK AND PINION POWER STEERING GEAR ASSEMBLY

(a) Remove the 4 bolts, 4 nuts and rack and pinion power steering gear assembly from the front frame assembly.

NOTICE:

Because the nut has its own stopper, do not turn the nut. Loosen the bolt with the nut secured.

19. SECURE RACK AND PINION POWER STEERING GEAR ASSEMBLY

(a) Using SST, secure the rack and pinion power steering gear assembly in a vise.

SST: 09612-00012

HINT:

Wrap SST with protective tape before use.

*a

Protective Tape

20. REMOVE TIE ROD ASSEMBLY LH

(a) Put matchmarks on the tie rod assembly LH and rack and pinion power steering gear assembly.

*a

Matchmark

(b) Remove the tie rod assembly LH and lock nut.

21. REMOVE TIE ROD ASSEMBLY RH

HINT:

Perform the same procedure as for the LH side.

22. REMOVE STEERING GEAR HEAT INSULATOR

(a) Remove the 2 bolts and steering gear heat insulator from the rack and pinion power steering gear assembly.
    Reassembly

    Steering Gear(for Hv Model)

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Power Steering System(for Gasoline Model): Torque Sensor Zero Point Adjustment Undone (C1515)
    DESCRIPTION This DTC does not indicate a malfunction. The power steering ECU (rack and pinion power steering gear assembly) stores this DTC when it determines that torque sensor zero point calibration has not been performed. When the IG terminal voltage is below 8 V, torque sensor zero point calibra ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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