Lexus GS300/400 (2000 year). Service manual — part 154

R11910

Match Marks

–

INTRODUCTION

FOR ALL OF VEHICLES

IN–11

11

reset the memory. To avoid erasing the memory of
each memory system, never use a back–up power
supply from another battery.

(3)

Even in cases of a minor collision where the SRS
does not deploy, the steering wheel pad, front pas-
senger airbag assembly, side airbag assembly,
front airbag sensor, side airbag sensor and seat belt
pretensioner should be inspected
(See page

RS–15

,

RS–29

,

RS–42

,

RS–60

,

RS–65

and

BO–125

).

(4)

Never use SRS parts from another vehicle. When
replacing parts, replace them with new parts.

(5)

Before repairs, remove the airbag sensor if shocks
are likely to be applied to the sensor during repairs.

(6)

Never disassemble and repair the airbag sensor as-
sembly, side airbag sensor assembly, steering
wheel pad, front passenger airbag assembly, side
airbag assembly, front airbag sensor, side airbag
sensor or seat belt pretensioner.

(7)

If the airbag sensor assembly, side airbag sensor
assembly, steering wheel pad, front passenger air-
bag assembly, side airbag assembly, front airbag
sensor, side airbag sensor or seat belt pretensioner
has been dropped, or if there are cracks, dents or
other defects in the case, bracket or connector, re-
place them with new ones.

(8)

Do not directly expose the airbag sensor assembly,
side airbag sensor assembly, steering wheel pad,
front passenger airbag assembly, side airbag as-
sembly, front airbag sensor, side airbag sensor or
seat belt pretensioner to hot air or flames.

(9)

Use a volt/ohmmeter with high impedance (10 k

Ω

/V

minimum) for troubleshooting of the electrical cir-
cuit.

(10) Information labels are attached to the periphery of

the SRS components. Follow the instructions on the
notices.

(11) After work on the supplemental restraint system is

completed, check the SRS warning light (See page

DI–552

).

(c)

SPIRAL CABLE (in Combination Switch)
The steering wheel must be fitted correctly to the steering
column with the spiral cable at the neutral position, other-
wise cable disconnection and other troubles may result.
Refer to

SR–17

of this manual concerning correct steer-

ing wheel installation.

B02398

Example:

Correct

Wrong

Z13950

Example:

IN–12

–

INTRODUCTION

FOR ALL OF VEHICLES

12

(d)

STEERING WHEEL PAD (with Airbag)
(1)

When removing the steering wheel pad or handling
a new steering wheel pad, it should be placed with
the pad top surface facing up.
Storing the pad with its metallic surface facing up-
ward may lead to a serious accident if the airbag de-
ploys for some reason. In addition do not store a
steering wheel pad on top of another one.

(2)

Never measure the resistance of the airbag squib.
(This may cause the airbag to deploy, which is very
dangerous.)

(3)

Grease should not be applied to the steering wheel
pad and the pad should not be cleaned with deter-
gents of any kind.

(4)

Store the steering wheel pad where the ambient
temperature remains below 93

°

C (200

°

F), without

high humidity and away from electrical noise.

(5)

When using electric welding, first disconnect the air-
bag connector (yellow color and 2 pins) under the
steering column near the combination switch con-
nector before starting work.

(6)

When disposing of a vehicle or the steering wheel
pad alone, the airbag should be deployed using an
SST before disposal (See page

RS–17

).

Carry out the operation in a safe place away from
electrical noise.

B00696

Example:

Correct

Wrong

Z13951

Example:

–

INTRODUCTION

FOR ALL OF VEHICLES

IN–13

13

(e)

FRONT PASSENGER AIRBAG ASSEMBLY
(1)

Always store a removed or new front passenger air-
bag assembly with the airbag deployment direction
facing up.
Storing the airbag assembly with the airbag deploy-
ment direction facing down could cause a serious
accident if the airbag deploys.

(2)

Never measure the resistance of the airbag squib.
(This may cause the airbag to deploy, which is very
dangerous.)

(3)

Grease should not be applied to the front passen-
ger airbag assembly and the airbag door should not
be cleaned with detergents of any kind.

(4)

Store the airbag assembly where the ambient tem-
perature remains below 93

°

C (200

°

F), without high

humidity and away from electrical noise.

(5)

When using electric welding, first disconnect the air-
bag connector (yellow color and 2 pins) installed on
the assembly before starting work.

(6)

When disposing of a vehicle or the airbag assembly
alone, the airbag should be deployed using an SST
before disposal (See page

RS–31

).

Perform the operation in a safe place away from
electrical noise.

B02129

Example:

Correct

Wrong

B01546

Example:

IN–14

–

INTRODUCTION

FOR ALL OF VEHICLES

14

(f)

SIDE AIRBAG ASSEMBLY
(1)

Always store a removed or new side airbag assem-
bly with the airbag deployment direction facing up.
Storing the airbag assembly with the airbag deploy-
ment direction facing down could cause a serious
accident if the airbag deploys.

(2)

Never measure the resistance of the airbag squib.
(This may cause the airbag to deploy, which is very
dangerous.)

(3)

Grease should not be applied to the side airbag as-
sembly and the surface should not be cleaned with
detergents of any kind.

(4)

Store the airbag assembly where the ambient tem-
perature remains below 93

°

C (200

°

F), without high

humidity and away from electrical noise.

(5)

When using electric welding, first disconnect the air-
bag connector (yellow color and 2 pins) under the
seat before starting work.

(6)

When disposing of a vehicle or the side airbag as-
sembly alone, the airbag should be deployed using
an SST before disposal (See page

RS–43

).

Perform the operation in a safe place away from
electrical noise.