Lexus SC300 / Lexus SC400. Manual — part 756

GENERAL DESCRIPTION

SR0E7–02

Care must be taken to replace parts properly because they could affect the performance of the steering

system and result in a driving hazard.

The steering wheel pad has an airbag built in, so take all due precautions when handling it. For more

details, see the RS section.

TROUBLESHOOTING

SR0E8–02

You will find the cause of trouble more easily by properly using the table shown below. In this table, the
numbers indicate the priority of the probable cause of trouble. Check each part in the order shown. If neces-
sary, repair or replace the part.

SA–3

SR–1

13

SA–41

SR–167

SR–163

SA–16

SA–3

SR–2

–

STEERING

GENERAL DESCRIPTION, TROUBLESHOOTING

GENERAL DESCRIPTION

SR0E7–02

Care must be taken to replace parts properly because they could affect the performance of the steering

system and result in a driving hazard.

The steering wheel pad has an airbag built in, so take all due precautions when handling it. For more

details, see the RS section.

TROUBLESHOOTING

SR0E8–02

You will find the cause of trouble more easily by properly using the table shown below. In this table, the
numbers indicate the priority of the probable cause of trouble. Check each part in the order shown. If neces-
sary, repair or replace the part.

SA–3

SR–1

13

SA–41

SR–167

SR–163

SA–16

SA–3

SR–2

–

STEERING

GENERAL DESCRIPTION, TROUBLESHOOTING

ON–VEHICLE INSPECTION

SR0E9–02

CHECK THAT STEERING WHEEL FREEPLAY IS COR-
RECT
With the vehicle stopped and tires pointed straight ahead,
rock the steering wheel gently back and forth with light finger
pressure.
Freeplay should not exceed the maximum.

Maximum freeplay:

30 mm (1.18 in.)

If incorrect, repair.

–

STEERING

ON–VEHICLE INSPECTION

SR–3

STEERING COLUMN

DESCRIPTION

SR0EA–02

There are two types of steering column, the manual tilt/manual telescopic one, and the power tilt/power
telescopic one.

SR0EB–02

OPERATION

POWER TILT OPERATION

The power tilt mechanism consists of the control gear assembly, tilt motor, tilt position sensor, tilt and tele-
scopic switch, unlock warning switch and tilt and telescopic ECU.

The control gear assembly consists of the worm wheel, tilt gear, tilt worm and slider. Rotation of the tilt motor
moves the slider towards the tilt worm. The column upper tube is integrated with the slider and is rotated
up and down by movement of the slider.

SR–4

–

STEERING

STEERING COLUMN