1991 LEXUS SC400 Service Repair Manual

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Page 3057 of 4087

LEXUS SC400 1991 Service Repair Manual
(b) Using snap ring pliers, install the snap ring to the main shaft.
(c) Using a vise, press in the 2 tilt steering shafts.HINT: Make sure the upper tube turns smoothly.
5. INSTALL TILT STEERING GE

Page 3058 of 4087

LEXUS SC400 1991 Service Repair Manual
6. INSTALL UPPER BRACKET
(a) Install the upper bracket with 2 new tapered±head bolts.
(b) Tighten the tapered±head bolts until the bolt heads break off.
7. INSTALL CONNECTOR BRACKET
Torque: 4.9

Page 3059 of 4087

LEXUS SC400 1991 Service Repair Manual
11. INSTALL TELESCOPIC SENSOR PLATE
Torque: 4.9 NVm (50 kgf Vcm, 43 in. Vlbf)
12. INSTALL LOWER DUST COVER
(a) Using a press, install the dust seal.
(b) Install the lower dust cover and clip.
13.

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LEXUS SC400 1991 Service Repair Manual
±MEMO± SR±38
±
STEERING STEERING COLUMN
WhereEverybodyKnowsYourName

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LEXUS SC400 1991 Service Repair Manual
ELECTRONIC CONTROL SYSTEM
±
STEERING STEERING COLUMNSR±39
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LEXUS SC400 1991 Service Repair Manual
DESCRIPTION
By operating the driving position memory and return switch the drivers seat, steering wheel and outer mir-
ror are moved to their respective memorized positions.

DESCRIPTION
By operating the driving position memory and return switch the driver's seat, steering wheel and outer mir-
ror are moved to their respective memorized positions.

Parts Name\

\

\
Function

Tilt & Telescopic ECU
\

\

\

\

Control the manual operation, return operation and memory and return ope\
ration for tilt
and telescopic of steering wheel.
Auto Set Switch\
\
This switch is a main switch for the away operation of tilt and telescop\
ic.

Manual Switch\

\

\

\

This switch is an operation switch to operate tilt and telescopic manual\
ly. When one of tilt
up, tilt down, telescopic Extension and telescopic Contraction is operat\
ed, steering wheel
will be able to set on the optional position within the extent of operat\
ing.

Driving Position
Memory and
Return Switch\

\

\

Operating this switch makes return operation that driver seat steering w\
heel and outer mirror
are set on the memorized position working together power seat and outer \
mirror.

Position Sensor
\

\

\
Tilt position sensor detect an amount of tilt and input it to ECU.
Telescopic position sensor detect an amount of slide and input it to ECU.\

Motor
\

\

\
There is a tilt motor and telescopic motor respectively. These are operated by a signal from
the ECU.
SR±40±
STEERING STEERING COLUMN
WhereEverybodyKnowsYourName

Page 3063 of 4087

LEXUS SC400 1991 Service Repair Manual
PARTS LOCATION
±
STEERING STEERING COLUMNSR±41
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Page 3064 of 4087

LEXUS SC400 1991 Service Repair Manual
SR±42±
STEERING STEERING COLUMN
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