Lexus SC300 / Lexus SC400. Manual — part 961

228

AUTOMATIC AIR CONDITIONER

2

2

2

2

2

2

2

2

1A

5

2

2

2

2

2

2

2

I32

E11

I27

I27

EB

IJ

1K

2

IN1

6

II1

5

II1

2

IR2

4

IJ2

2

EB1

2

IR2

2

IR2

1

IR2

6

IN1

1

IN1

3

IE2

12

EB1

1

M

1

2

4

2

1

A

B

B

B

1

2

1

2

IR2

10

IR2

9

23

34

R–L

R–L

R–L

R–L

R–L

R–Y

L–R

L–Y

L–W

Y

B–R

R

L–W

R–L

B

R–

L

R–

L

R–

L

R–L

B

L–R

W

W

L–W

L–W

L–R

W–

B

L–

R

L

L–

R

W–

B

W–

B

W

–

B

W–

B

W–

B

R

Y

B–

R

W–B

R

L

L

R–L

R–L

FROM POWER SOURCE SYSTEM (SEE PAGE 56)

10A
HEATER

60A
HEATER

HEATER
RELAY

A/C MAGNETIC
CLUTCH RELAY

ENGINE AND ECT ECU

DEFOGGER
RELAY

BLOWER
MOTOR

A/

C

M

AG

N

ET

IC

C

L

U

T

C

H

BL

O

W

ER

R

ES

IS

T

O

R

(F

O

R

L

O

W

SPEE

D

)

A/C POWER
TRANSISTOR

A1 7

, A1 8

B3

A2

E 9

B 2

ACMG

A/C

B

R–

Y

4

3

1

3

5

1

4

2

2

1

2

3

4

R–

L

B

L–O

W–G

IN1

2

A

A

1

229

FRESH

RECIRC

2

1

II1

7

IE1

13

IQ1

13

IR2

5

IR1

2

IR1

1

IG1

16

IR1

3

I27

B–Y

R–Y

L–R

L–Y

L–W

Y

B–R

R–L

R–L

BR

B–

Y

G–

R

LG

GR

BR

R–

Y

B–

Y

R–

Y

R–

Y

GR

A

8

A

7

A

9

B

2

A

4

C

6

A

3

C

5

C

4

A

10

B

23

B

11

GR

R–

Y

G

G–

R

B–

Y

R–

G

L–R

L–

Y

L–W

Y

B–

R

VSV
(FOR WATER VALVE)

AIR INLET CONTROL
SERVO MOTOR

A33

V 4

6

2

5

3

1

BR–W

A12

, A 1 3

, A 1 4

A/C CONTROL ASSEMBLY

C

A

B

M

BLR

LV

HR

A/C IN

MGC

IG+

WV

MREC

MFRS

RDFGR

TPI

ST

LG

G–

R

BR

–

W

2

1

NOISE FILTER
(FOR A/C SYSTEM)

N 4

R–

G

R–

L

IQ1

16

IR1

6

Y–G

BR

Y–

G

BR

BR

230

AUTOMATIC AIR CONDITIONER

M

HOT

COOL

I27

I27

I27

I27

E18

I28

EB1

7

IN1

4

II1

4

IQ1

5

II1

1

IR2

3

IR1

4

IR1

10

IR1

9

IR1

8

IR1

13

IR1

12

2

1

2

1

2

1

B

8

B

3

B

10

B

9

B

18

B

22

C

2

C

3

B

20

B

25

C

9

C

8

BR

BR–W

BR

BR–W

BR

BR

BR

–

W

G–

W

V

R–

Y

BR

BR

BR

BR

BR

P–

B

G–

Y

P–

B

P

L–Y

BR

–

W

G–

W

V

R–

Y

Y–

R

Y–

B

W

BR

–

W

Y–

R

BR

BR

–

W

G–

W

V

R–

Y

Y–

G

Y–

L

TAM

LCKI

TW

TE

S5

TP

MH

MC

SG

TPM

MDEF

MFACE

2

6

1

5

4

AIR MIX CONTROL
SERVO MOTOR

A/C CONTROL ASSEMBLY

A/

C

L

O

C

K

SEN

SO

R

A/

C

AM

BI

EN

T

T

E

M

P

.

S

EN

SO

R

A/

C

SO

L

AR

SEN

SO

R

A1

A2

A2

0

A27

A12

, A1 3

, A 1 4

C

A

B

BR

–

W

I27

I27

3

1

W4

WAT

ER

T

EM

P.

SEN

SO

R

2

1

IR1

5

IR2

8

IR1

7

I29

IR1

11

A/

C

EVAPO

R

AT

O

R

T

EM

P.

SEN

SO

R

A1

6

BR–W

Y–G

Y–L

W

BR

BR

Y–G

BR

BR–W

BR

BR

BR

BR–W

BR

BR

BR

G–

Y

LG

–R

G–

Y

Y–

R

Y–

B

WW

BR

BR

IQ1

6

BR

BR

231

IQ1

1

IQ1

9

IQ1

15

IK1

8

M

1B

5

3A

5

3A

6

3B

3

1E

11

3G

5

1E

2

2

2

6

1

5

4

1

4

3

9

8

7

6

5

4

B

4

B

12

B

13

B

14

B

15

B

16

C

1

C

15

B

1

BR

BR–W

Y–G

Y–L

W

TACH

BR

BR

–

W

Y–

G

Y–

L

W

R

R

R

L–

R

L–

R

B

B

B

L–

R

R

B–

Y

B–

R

Y

G–

O

V–

R

V–

W

L–R

SAUT

SET1

SET2

SET3

SET4

SET5

+B

ACC

IGN

A

/C

V

E

N

T

M

OD

E

C

O

N

T

R

OL

SER

VO

M

O

T

O

R

ROOM TEMP. CONTROL SW

A/C CONTROL ASSEMBLY

IGNITER

10A
DOME

15A
CIG

FROM POWER SOURCE SYSTEM (SEE PAGE 56)

A12

, A 1 3

, A 1 4

A15

I 2

A2

8

A/C CONTROL SW AND RADIO SW

DEF

FACE

C

A

B

AU

T

O

2

B

7

2

1

IQ1

17

BR

BR

BR

BR

Y–

L

Y–

L

TR

A1

9

A

/C

R

OOM

T

E

M

P

.

SEN

SO

R