1991 LEXUS SC300 mirror

When the negative (±) terminal cable is disconnected from
the battery, memory of the clock and audio systems will be
cancelled. So before starting work, make a record of the con-
tents memorized by each memory system. Then when work
is finished, reset the clock and audio systems as before.
When the vehicle has power tilt and power telescopic steer-
ing, power seat, power outside rear view mirror and power
shoulder belt anchorage, which are all equipped with
memory function, it is not possible to make a record of the
memory contents. So when the operation is finished, it will be
necessary to explain this fact to the customer, and ask the
customer to adjust the features and reset the memory.
To avoid erasing the memory of each memory system, never
use a back±up power supply from outside the vehicle.
3. Even in cases of a minor collision where the airbag does not deploy, the front airbag sensors and the steering wheel pad
should be inspected. (See page AB±9)
4. Never use airbag parts from another vehicle. When replacing parts, replace them with new parts.
5. Before repairs, remove the airbag sensors if shocks are likely
to be applied to the sensors during repairs.
6. The center airbag sensor assembly contains mercury. After
performing replacement, do not destroy the old part. When
scrapping the vehicle or replacing the center airbag sensor
assembly itself, remove the center airbag sensor assembly
and dispose of it as toxic waste.
7. Never disassemble and repair the front airbag sensors, center airbag sensor assembly or steering wheel pad in order
to reuse it.
8. If the front airbag sensors, center airbag sensor assembly or steering wheel pad have been dropped, or if there are cracks,
dents or other defects in the case, bracket or connector,
replace them with new ones.
9. Do not expose the front airbag sensors, center airbag sensor assembly or steering wheel pad directly to hot air or flames.
10. U s e a v o l t / o h m m e t e r w i t h h i g h i m pedance (10 kW/V
minimum) for troubleshooting of the electrical circuit.
11. Information labels are attached to the periphery of the airbag components. Follow the notices.
12. After work on the airbag system is completed, perform the
airbag warning light check (See page AB±30).
±
INTRODUCTION Precautions for Vehicles Equipped with SRS AirbagIN±9
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GENERAL DESCRIPTION
The LEXUS SC400 is equipped with an SRS (Supplemental Restraint System) a\
irbag.
Failure to carry out service operations in the correct sequence could cause the\
airbag system to unex-
pectedly deploy during servicing, possibly leading to a serious accident.
Further, if a mistake is made in servicing the airbag system, it is possible the\
airbag may fail to operate
when required.
Before performing servicing (including removal or installation of parts, insp\
ection or replacement), be
sure to read the following items carefully, then follow the correct procedure described in the repair
manual.
1. Malfunction symptoms of the airbag system are difficult to confirm, so the diagnostic codes become themost important source of information when troubleshooting.
When troubleshooting the airbag system, always inspect the diagnostic co\
des before disconnecting the
battery (See page AB±25).
2. Work must be started after approx. 20 seconds or longer from the time the ig\
nition switch is turned to the LOCK position and the negative (±) terminal cable is disconnec\
ted from the battery. (The
airbag system is equipped with a back±up power source so that if work is sta\
rted within 20 seconds
of disconnecting the negative (±) terminal cable of the battery, the airbag may be deployed.)
When the negative (±) terminal cable is disconnected from the battery, memory of the clock and audio sys-
tems will be cancelled. So before starting work, make a record of the conten\
ts memorized by the audio
memory system. Then when work is finished, reset the audio systems as before a\
nd adjust the clock. When
the vehicle has power tilt and power telescopic steering, power seat, power \
outside rear view mirror and
power shoulder belt anchorage, which are all equipped with memory function, it\
is not possible to make
a record of the memory contents. So when the work is finished, it will be\
necessary to explain this fact to
the customer, and ask the customer to adjust the features and reset the memory. To avoid erasing the
memory of each memory system, never use a back±up power supply from outside\
the vehicle.
3. Even in cases of a minor collision where the airbag does not deploy, the front airbag sensors and
the steering wheel pad should be inspected (See page AB±9).
4. Never use airbag parts from another vehicle. When replacing parts, replace them with new parts.
5. Before repairs, remove the airbag sensors if shocks are likely to be applied to the sensors during repairs.
6. Never disassemble and repair the front airbag sensors, center airbag sensor a\
ssembly or steering
wheel pad in order to reuse it.
7. If the front airbag sensors, center airbag assembly or steering wheel pa\
d have been dropped, or if there are cracks, dents or other defects in the case, bracket or conn\
ector, replace them with new
ones.
8. Do not expose the front airbag sensors, center airbag sensor assembly or\
steering wheel pad directly to hot air or flames.
9. Use a volt/ohmmeter with high impedance (10 kW/V minimum) for troubleshoo\
ting of the electrical circuit.
10. Information labels are attached to the periphery of the airbag components. Follow t\
he instructions
on the notices.
11. After work on the airbag system is completed, perform the airbag warning\
light check (See page AB±30 ).
AB±2
SRS AIRBAG
± General Description
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MIRROR
Outside Rear View Mirror
COMPONENTS
REMOVAL AND INSTALLATION OF
OUTSIDE REAR VIEW MIRROR
HINT: Install the mirror by following the removal sequence
in reverse.
1. DISCONNECT BATTERY CABLE FROM NEGATIVE TERMINAL
CAUTION: Work must be started after approx. 20 se-
conds or longer from the time the ignition switch is
turned to the ºLOCKº position and the negative (±) termi-
nal cable is disconnected from the battery.
2. REMOVE DOOR TRIM UPPER PANEL Removal: (See step 5 on page BO±34)
Installation: (See step 16 on page BO±40)
3. REMOVE MIRROR (a) Connect the connector, install the mirror with two bolts.
(b) Connect the connector, install the speaker with twobolts.
BO±42
±
BODY Mirror (Outside Rear View Mirror)
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REPLACEMENT OF OUTSIDE REAR
VIEW MIRROR
1. IF NECESSARY, DISCONNECT MIRROR(a) Insert the shop rag between the mirror and the mirrorbody to wrap up the mirror in the shop rag.
(b) Pull up the lower side of the shop rag to disconnect the mirror joint.
(c) Pull up the mirror and disconnect it.
2. CONNECT MIRROR (a) Connect the claws (A) and set the mirror to the mirrorbody.
(b) Push the mirror to connect the claws (B) and connect it.
±
BODY Mirror (Outside Rear View Mirror)BO±43
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Inner Rear View Mirror
COMPONENTS
REMOVAL AND INSTALLATION OF
INNER REAR VIEW MIRROR
HINT: Install the mirror following removal sequence in re-
verse.
1. REMOVE CENTER VISOR (See step 4 on page BO±123)
2. REMOVE INNER REAR VIEW MIRROR (a) Remove the mirror from the mirror base.
(b) Disconnect the connector.
BO±44
±
BODY Mirror (Inner Rear View Mirror)
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WINDSHIELD
COMPONENTS
REMOVAL OF WINDSHIELD
1. REMOVE FOLLOWING PARTS:(a) Front pillar garnish (See step 2 on page BO±123)
(b) Interior light (See step 2 on page BO±85)
(c) Center visor and i nner rear view mirror (See page
BO±44 )
(d) Sun visor (See step 3 on page BO±123)
(e) Hood (See step 2 on page BO±20)
(f) Moulding (See page BO±96)
±
BODY WindshieldBO±45
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18. INSTALL FOLLOWING PARTS:(a) Hood
HINT: Torque the hood support
Torque: 22 N Vm (225 kgf Vcm, 16 ft Vlbf)
(b) Front roof headlining
(c) Holders
(d) Center visor and inner rear view mirror
(e) Interior light
(f) Front pillar garnish
±
BODY WindshieldBO±51
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Body Outside Moulding
COMPONENTS
Front Door Belt Moulding
REMOVAL AND INSTALLATION
1. REMOVE FOLLOWING PARTS:(See steps 1 to 7 on pages BO±33 to 34)
(a) Armrest base panel
(b) Door Trim
(c) Door Speaker Grille
(d) Door Trim Upper Panel
(e) Outside Rear View Mirror
2. REMOVE FRONT DOOR BELT MOULDING
(See step 13 on page BO±35)
3. INSTALL FRONT DOOR BELT MOULDING (See step 8 on page BO±39)
4. INSTALL FOLLOWING PARTS: Install the parts following removal sequence in reverse.
(See steps 14 to 20 on pages BO±40 to 41)
±
BODY Moulding (Body Outside Moulding)BO±101
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