Lexus ES300 (2002 year). Manual — part 23

193

IO5

10

IO5

12

IO5

11

IO5

13

IF2

9

IF2

11

IF2

10

IF2

12

B

26

B

12

B

13

B

11

RAR+

RAR–

RBR+

RBR–

BD

A

ID1

5

ID1

6

ID1

15

ID1

16

B

10

B

8

B

9

B

7

RAL+

RAL–

RBL+

RBL–

BC

A

A

12

A

5

A

6

A

4

FAR+

FAR–

FBR+

FBR–

EB

BA

Absorber Control
Actuator Front RH

A 9

Absorber Control
Actuator Rear LH

A38

Absorber Control
Actuator Rear RH

A39

BB

A

A

Junction
Connector

J12

Junction
Connector

J13

1

1

1

2

3

4

5

2

3

4

5

2

3

4

5

IF2

17

B

25

26

SPDR

FRO

GR

–

R

GR

–

R

H

e

a

d

light B

eam

Le

v

e

l C

o

nt

ro

l E

C

U

H1

4

B

B

GR

–

R

(*1

)

(*1

)

Junction
Connector

J 2

IF2

13

B

22

SIL

WW

IF2

2

B

6

TC

P–

B

P

–

B

IF2

1

B

15

TEM

P

IF2

3

B

19

TS

LG

–B

LG

–

B

3B

72

3B

12

3B

11

3B

71

7

SIL

W

13

TC

P–

B

3

TEM

P

14

TS

LG

–B

A

A

Junction
Connector

J 3

Data Link Connector 3

D 2

IF4

16

A

11

TACH

B–

O

B

–

O

3A

57

3A

87

W

10A
GAUGE1

From Power Source System (See Page 56)

2M

1

T

a

c

hom

e

ter

BR

3B

74

3B

84

W

3B

99

3B

89

ID

W

W

BR

W–

B

W–

B

W–

B

L

–

Y

L–

W

L

L–

B

L–

R

R–

W

R–

Y

R

L–

R

R–

W

R–

Y

R

L–

R

R–

W

R–

Y

R

L–

R

R–

W

R–

Y

R

L–

R

R–

W

R–

Y

R

40

31

21

Combination Meter

C 7

Power

Micro Computer

W–B

W–B

Absorber Control ECU

A21(A), A22(B)

(*1

)

B–

O

I 2

5

TACH

B–

O

E

ngi

n

e

C

ontr

o

l

Modu

le

E 6

194

Electric Modulated Suspension

Electric modulated suspension system is the damping force control system using several signals which restrains the vehicle
movement (Such as rolling, diving, and squad) by a driver’s operation together with restraining and absorbing the vehicle
movement change and vibration against the unevenness of the road.

(1) Steering sensor signal

To input the rotation angle of the steering wheel into the TERMINALS SS2+ and SS2– of the absorber control ECU.

(2) Speed sensor signal

To detect the vehicle speed at ABS speed sensor front RH, rear RH, and input to the TERMINAL FRO of the absorber
control ECU from skid control ECU.

(3) Stop light SW signal

To detect the signal of the brake in operation and input it into the TERMINAL STP of the absorber control ECU.

(4) Engine rotation signal

To detect the engine speed and input it into the TERMINAL TACH of the absorber control ECU.

(5) Absorber control SW signal

To detect the switch condition and input it into the TERMINALS SW1 and SW2 of the absorber control ECU.

A22 (B) Absorber Control ECU

(B) 1–Ground : Approx. 12 volts with ignition SW at ON or ST position
(B) 2–Ground : Approx. 12 volts with brake pedal depressed

(B) 14, (B) 23–Ground : Always continuity

: Parts Location

Code

See Page

Code

See Page

Code

See Page

A8

36

A40

40

J4

39

A9

36

C7

38

J12

40

A21

A

38

D2

38

J13

40

A22

B

38

E6

38

S6

39

A23

38

H14

39

S9

39

A24

38

J1

39

S13

39

A38

40

J2

39

A39

40

J3

39

: Junction Block and Wire Harness Connector

Code

See Page

Junction Block and Wire Harness (Connector Location)

2F

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

2G

28

Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)

2L

2M

29

Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)

2R

(

)

3A

34 (w/ VSC)

Instrument Panel Wire and Passenger Side J/B (Instrument Panel Brace RH)

3B

34 (w/ VSC)

Instrument Panel Wire and Passenger Side J/B (Instrument Panel Brace RH)

: Connector Joining Wire Harness and Wire Harness

Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

ID1

46

Engine Room Main Wire and Floor No.1 Wire (Left Side of Driver Side J/B)

IF2

46

Engine Room Main Wire and Instrument Panel Wire (Right Side of Steering Column Tube)

IF4

46

Engine Room Main Wire and Instrument Panel Wire (Right Side of Steering Column Tube)

IO5

48

Instrument Panel Wire and Floor No.2 Wire (Right Kick Panel)

System Outline

Service Hints

195

: Ground Points

Code

See Page

Ground Points Location

EB

44

Right Fender

ED

44

Left Fender

IA

46

Instrument Panel Reinforcement LH

IB

46

Instrument Panel Brace LH

ID

46

Instrument Panel Brace RH

BA

50

Under the Driver’s Seat

BB

50

Under the Front Passenger’s Seat

BC

50

Front Side of Rear Quarter Wheel House LH

BD

50

Front Side of Rear Quarter Wheel House RH

: Splice Points

Code

See Page

Wire Harness with Splice Points

Code

See Page

Wire Harness with Splice Points

E4

44

Engine Room Main Wire

I2

48

Engine Room Main Wire

196

Headlight Beam Level Control

10A
GAUGE2

From Power Source System (See Page 56)

2B

7

E

E

IF4

1

IF8

7

IF8

8

IF8

9

IF8

10

IF8

1

4

IF8

IF8

5

IF8

6

I 2

IO5

8

IO5

17

IO5

18

4

1

6

3

4

1

6

3

1

3

2

5

14

16

15

4

13

5

5

IG

LH1

LH2

LH3

LH4

RH1

RH2

RH3

RH4

E

A

A

IB

A

J

u

nc

tion

C

onnec

to

r

J 1

Junction
Connector

J 4

Height Control Sensor

H16

B

B

J

unc

ti

on

C

onn

ec

tor

J 2

26

GR

–

R

GR

–

R

13

FRO

FRO

SHB

SHRR

SHG

SPDR

GND

SGR

SHR

SBR

Skid

C

o

n

tr

o

l EC

U

S 7

B

25

IF2

17

A

b

s

o

rber

Co

n

tr

o

l E

C

U

A2

2

GR

–

R

GR

–

R

IF8

3

Skid

C

o

n

tr

o

l EC

U

w

ith

A

c

tu

a

tor

S 1

20

GR

–

R

GR

–

R

(*1

)

(*1

)

(*3

)

(*3

)

(*2

)

(*2

)

J

unc

ti

on

C

o

nnec

to

r

J1

0

Headlight Beam Level Control ECU

H14

V

P–

B

G–

R

V

P–

B

G–

R

B–

L

L

G–

W

W–

B

B–

L

L

G–

W

B–

R

LG

–R

GR

–

B

W–

L

L–

W

L

–

W

W–

L

GR

–

B

LG

–

R

B–

R

R–

L

R–

L

R

–

L

R–

L

R–

L

W–

B

21

23

19

12

1

2

3

Headlight Beam Level
Control Actuator LH

H 1

Headlight Beam Level
Control Actuator RH

H 2

R–L

FRO