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

Auxiliary 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*

Lighting system (for HV 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 illuminates

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

Inspection After Repair

  • Poor idle, etc.
  • Engine start function, etc.

Replacement of inverter with converter assembly

Resolver learning

  • DTCs are stored
  • Slight vibration at a vehicle speed of 5 km/h (3 mph) or less
  • Shock or vibration during acceleration

Replacement of hybrid vehicle transaxle assembly

  • Resolver learning
  • Initialize resolver

Front wheel alignment adjustment

  1. Clear zero point calibration data.
  2. Perform yaw rate and acceleration sensor zero point calibration.
  • DTCs are stored
  • ABS warning light illuminates
  • Brake warning light / yellow (minor malfunction) illuminates
  • Slip indicator light illuminates
  • VSC disabled or malfunctions

  • Suspension, tires, etc.

    (The vehicle height changes because of suspension or tire replacement)

  • Replacement of front bumper assembly
  • Measurement of ultrasonic sensor detection angle
  • Ultrasonic sensor detection angle registration
  • Intelligent clearance sonar system
  • Intuitive parking assist system

Suspension, tires, etc.

(The vehicle height changes because of suspension or tire replacement)

Rear television camera assembly optical axis (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.

(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)
  • Replacement of headlight ECU sub-assembly LH
  • Replacement of headlight assembly LH

Synchronize the vehicle information

Lighting system (for HV Model with Cornering Light)

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

*: When performing learning using the Techstream.

Click here

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 power switch to ON, center the steering wheel, turn the power switch off, and then disconnect the connectors.

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

NOTICE:

Do not turn the power 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 NO. 2 ENGINE UNDER COVER ASSEMBLY

Click here

9. 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.

10. 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.

11. SEPARATE TIE ROD ASSEMBLY RH

HINT:

Perform the same procedure as for the LH side.

12. REMOVE ENGINE ASSEMBLY WITH TRANSAXLE

Click here

13. REMOVE STEERING GEAR HEAT INSULATOR

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

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. REMOVE FUEL DELIVERY GUARD

Click here

16. INSTALL ENGINE HANGERS

Click here

17. REMOVE FRONT FRAME ASSEMBLY

Click here

18. 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.

19. 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.

20. 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

21. 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.

22. REMOVE TIE ROD ASSEMBLY RH

HINT:

Perform the same procedure as for the LH side.

    Reassembly

    Suspension

    See More:

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