Toyota Avalon (XX50): Steering System

Adjustment

ADJUSTMENT

PROCEDURE

1. STEERING WHEEL OFF CENTER ADJUSTMENT PROCEDURE

(a) Inspect steering wheel off center.

(1) Turn the steering wheel assembly to the center position.

(2) Apply masking tape to the top center of the steering wheel assembly and upper steering column cover.

*1 Steering Wheel Assembly *2 Upper Steering Column Cover *a Masking Tape

(3) Drive the vehicle in a straight line for 100 m (328 ft.) at a constant speed of 56 km/h (35 mph), while holding the steering wheel assembly to maintain the course.

(4) Draw a line on the masking tape as shown in the illustration.

*1 Upper Steering Column Cover *2 Steering Wheel Assembly *a Marked Line

(5) Turn the steering wheel assembly to the center position.

(6) Draw a new line on the masking tape on the steering wheel assembly as shown in the illustration.

*1 Upper Steering Column Cover *2 Steering Wheel Assembly *a Marked Line

(7) Measure the distance between the 2 lines on the masking tape on the steering wheel assembly.

(8) Convert the measured distance to the steering angle.

HINT:

• Measured distance of 1 mm (0.0394 in.) = Steering angle of approximately 1 degree
• Make a note of the steering angle.

(b) Adjust the steering angle.

(1) Put matchmarks on the tie rod assemblies LH and RH and steering rack end sub-assembly respectively.

*a Matchmark

(2) Using a paper gauge, measure the thread length of the steering rack end sub-assemblies.

HINT:

• Measure both RH and LH sides.
• Make a note of the measured values.

(3) Remove the steering rack boot clips from the RH and LH steering rack boots.

(4) Loosen the RH and LH lock nuts.

(5) Turn the RH and LH steering rack end sub-assemblies by the same amount (but in different directions) according to the measured steering angle.

HINT:

One 360 degree turn of a steering rack end sub-assembly (1.5 mm (0.0591 in.) horizontal movement) equals 9.2 degrees of steering angle.

(6) Tighten the RH and LH lock nuts to the specified torque.

Torque:

88 N·m {897 kgf·cm, 65 ft·lbf}

NOTICE:

Make sure that the difference in thread length between the RH and LH steering rack end sub-assemblies is within 1.5 mm (0.0591 in.).

(7) Install the RH and LH steering rack boot clips.

HINT:

Make sure that the tabs of the RH and LH steering rack boot clips are positioned within the area shown in the illustration.

*a	Clip Tab Positioning Area
	Up
	Rear of Vehicle

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT STEERING WHEEL FREE PLAY

(a) for Gasoline Model:

Start the engine and make sure that the vehicle is in a state in which the power steering can operate.

(b) for HV Model:

Turn the power switch on (READY) so that the power steering is ready to operate.

(c) Stop the vehicle and align the front wheels facing straight ahead.

(d) Gently turn the steering wheel right and left, and check for steering wheel free play.

Maximum Free Play:

30 mm (1.18 in.)

HINT:

If the free play exceeds the maximum, check the steering system.

Click here

Precaution

PRECAUTION

HANDLING PRECAUTIONS FOR STEERING SYSTEM

(a) Care must be taken when replacing parts. Incorrect replacement may affect the performance of the steering system and result in a driving hazard.

HANDLING PRECAUTIONS FOR SRS AIRBAG SYSTEM

(a) This vehicle is equipped with a Supplemental Restraint System (SRS). Failure to carry out service operations in the correct sequence could cause the SRS to unexpectedly deploy during servicing. This may cause a serious accident. Before servicing (including inspection, replacement, removal, and installation of parts), be sure to read the precautionary notices for Supplemental Restraint System.

for HV Model: Click here

for Gasoline Model: Click here

HANDLING PRECAUTIONS FOR STEERING COLUMN

(a) for Manual Tilt and Manual Telescopic Steering Column:

(1) Do not release the tilt lever when the steering column assembly is not installed on the vehicle.

HANDLING PRECAUTION FOR SPIRAL CABLE

(a) Do not remove/install the spiral cable with sensor sub-assembly with the auxiliary battery connected and the engine switch (for Gasoline Model) or power switch (for HV Model) on (IG).

(b) Do not rotate the spiral cable with sensor sub-assembly without the steering wheel assembly installed, with the auxiliary battery connected and the engine switch (for Gasoline Model) or power switch (for HV Model) on (IG).

(c) Ensure that the steering wheel assembly is installed and aligned straight when inspecting the steering sensor.

(d) Be sure that the spiral cable is in the center position during installation and when removing and installing the steering wheel.

Click here

CAUTION:

If the steering wheel is turned without the spiral cable installed in the center position, the cable may break.

PRECAUTION WHEN REPLACING STEERING LOCK ACTUATOR ASSEMBLY

Before replacing the steering lock actuator assembly, refer to Registration.

for HV Model: Click here

for Gasoline Model: Click here

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

• Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table.
• Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
• Inspect the fuses and relays related to this system before inspecting the suspected areas below.

*1: for Manual Tilt and Manual Telescopic Steering Column

*2: for Power Tilt and Power Telescopic Steering Column

*3: for HV Model

*4: for Gasoline Model