Lexus SC300 / Lexus SC400. Manual - part 978

76

ENGINE CONTROL

: PARTS LOCATION

CODE

SEE PAGE

CODE

SEE PAGE

CODE

SEE PAGE

A 9

26

F15

30

K 3

29

C 3

26

F16

30

N 1

27

C13

B

28

I 1

27

O 3

27

C14

A

28

I 2

27

O 4

27

C23

28

I 6

27

O 8

31

D13

26

I 7

27

P20

27

E 2

26

I 8

27

S 3

27

E 3

26

I 9

27

S12

29

E 9

A

28

I10

27

T 2

27

E10

B

28

I11

27

T 6

29

E11

A

28

I15

29

V 1

27

E12

B

28

K 1

27

V 2

27

F 9

26

K 2

27

V 3

27

: RELAY BLOCKS

CODE

SEE PAGE

RELAY BLOCKS (RELAY BLOCK LOCATION)

2

19

ENGINE COMPARTMENT LEFT

4

23

LEFT KICK PANEL (J/B NO.1 LEFT)

: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR

CODE

SEE PAGE

JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)

1B

20

ENGINE ROOM MAIN WIRE

1E

20

INSTRUMENT PANEL WIRE

1H

1I

20

COWL WIRE

1J

20

COWL WIRE

1K
3A

23

INSTRUMENT PANEL WIRE

3D

23

INSTRUMENT PANEL WIRE

: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS

CODE

SEE PAGE

JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)

EB1

34

ENGINE WIRE AND ENGINE ROOM MAIN WIRE (FRONT SIDE OF R/B NO 2)

EB2

34

ENGINE WIRE AND ENGINE ROOM MAIN WIRE (FRONT SIDE OF R/B NO.2)

IE1

36

ENGINE ROOM MAIN WIRE AND COWL WIRE (R/B NO. 4)

IG2

36

INSTRUMENT PANEL WIRE AND COWL WIRE (R/B NO. 5)

IG3

38

INSTRUMENT PANEL WIRE AND COWL WIRE (RIGHT KICK PANEL)

IH1

36

COWL NO. 2 WIRE AND COWL WIRE (BEHIND COMBINATION METER)

II1

36

ENGINE WIRE AND A/C WIRE (BEHIND GLOVE BOX)

IJ1

36

ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)

IJ2

36

ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)

IK1

36

ENGINE WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)

IK2

36

ENGINE WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)

BT1

40

FLOOR WIRE AND COWL WIRE (LEFT KICK PANEL)

BY1

40

INSTRUMENT PANEL WIRE AND FLOOR NO.3 WIRE (RIGHT KICK PANEL)

: GROUND POINTS

CODE

SEE PAGE

GROUND POINTS LOCATION

EB

34

FRONT SIDE OF LEFT FENDER

EC

34

FRONT SIDE OF INTAKE MANIFOLD

ED

34

REAR SIDE OF CYLINDER HEAD RH

IF

36

LEFT KICK PANEL

IH

36

UNDER THE ASHTRAY LH

BK

40

UNDER THE CENTER PILLAR LH

77

: SPLICE POINTS

CODE

SEE PAGE

WIRE HARNESS WITH SPLICE POINTS

CODE

SEE PAGE

WIRE HARNESS WITH SPLICE POINTS

E15

I22

38

INSTRUMENT PANEL WIRE

E16

I23

38

INSTRUMENT PANEL WIRE

E17

34

ENGINE WIRE

I32

E18

34

ENGINE WIRE

I33

38

ENGINE WIRE

E20

I34

38

ENGINE WIRE

I10

I40

38

INSTRMENT PANEL WIRE

I13

38

COWL WIRE

B12

40

FLOOR MAIN WIRE

I14

38

COWL WIRE

B17

40

FLOOR NO.3 WIRE

I17

38

INSTRUMENT PANEL WIRE

78

ENGINE CONTROL

194

ELECTRIC TENSION REDUCER

1C

6

1I

8

Bb1

7

BX1

18

Bb1

4

BK

BL

2

1

2

1

1

1

12

15

16

2

2

9

2

1

B–R

B–

R

B

B–

R

B

B

B–

L

B–

L

B–

Y

BR

W–

B

W–

B

W–

B

W–

B

15A
ECU–IG

TENSION
REDUCER
SOLENOID LH

TENSION
REDUCER
SOLENOID RH

FROM POWER SOURCE SYSTEM (SEE PAGE 56)

DIODE
(FOR TENSION

REDUCER)

POWER SEAT ECU
(FOR PASSENGER’ S SEAT)

BUCKLE
SW LH

BUCKLE
SW RH

PC

SSR–

GND

PD

T18

T19

D 3

P12

B 4

B 5

Ba2

6

Ba1

11

12

Ba2

5

(W/ MEMORY POWER SEAT)
(W/O MEMORY POWER SEAT)

Ba1

(W/O MEMORY POWER SEAT)

(W/ MEMORY POWER SEAT)