Lexus ES300 (1997 year). Service manual - part 661

B

A14

, A15

A

A/C CONTROL ASSEMBLY

1

B–

Y

L

G–

R

P

A/

C

 S

A1

7

A/

C

 T

H

ER

M

IST

O

R

A/

C

 R

O

O

M

 T

E

M

P

. 

 SEN

SO

R

A1

8

A1

6

1

2

1

2

1

2

A/

C

 AM

BI

EN

T

 T

E

M

P

. 

 SEN

SO

R

A 1

IM3

10

IM2

10

IM3

11

A

14

B

14

B

10

B

13

A

16

B

3

B

4

B

6

A

1

B

5

B

8

A

11

A

9

A

8

A

F

B

D

IG1

8

I10

IG1

9

W

B–

Y

L

G–

R

P

W

LL

W–

R

L–

W

G–

Y

Y

B–

O

B–

Y

LG

–

B

V

W–

B

V

LG

–

B

B–

Y

B–

O

W–

R

W–

R

W–

R

W–

R

W–

R

Y

B

J2

8

, J

2

9

A

J

U

N

C

T

IO

N

 CO

NNE

CT

O

R

W–R

W–B

AMC

AMH

S5

TP

TS

SG

TE

TR

TAM

IGN

AC1

ACT

TW2

GND

TACH

ACT

THWO

A

24

A

5

R–Y

L–R

FROM TELEPHONE TRANSCEIVER
AND SPEAKER RELAY

FROM THEFT
DETERRENT ECU

W–

R

B

A

B

A

A

C

A

C

J

UNCT

IO

N

 CO

NNE

CT

O

R

B

J1

8

, J1

9

A

L

L

A

E

A

E

A

E

B

D

B

D

B

D

JUNCTION
CONNECTOR

B

J20

, J21

A

W–

R

W–

R

13

16

5

9

W–R

L

ENGINE CONTROL MODULE

E 7

A/C

TELI

SECU

M

3

4

2

1

AIR MIX CONTROL SERVO MOTOR

A27

WA

R

M

CO

O

L

5

R

2

O

L

AR

 SE

N

S

O

238

AUTOMATIC AIR CONDITIONING

239

A4 A/C DUAL PRESSURE SW

4–1 : OPEN ABOVE APPROX. 15.5 KG/CM

2

 (30 PSI, 206 KPA) OR 32 KG/CM

2

 (455 PSI, 3138 KPA)

A3 A/C MAGNETIC CLUTCH

4–GROUND : APPROX. 3.7

A14 (A), A15 (B) A/C CONTROL ASSEMBLY

B–GROUND : ALWAYS APPROX. 12 VOLTS

IG+–GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION

HR–GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSTIION AND DO NOT TURN THE BLOWER MOTOR

BELOW 1 VOLT WITH THE IGNITION SW AT ON POSITION AND TURN THE BLOWER MOTOR

PSW–GROUND : BELOW 1 VOLT WITH THE IGNITION SW ON

AC1–GROUND : BELOW 1 VOLT AT START THE ENGINE, OPERATE THE COMPRESSOR

+OR MORE VOLTS AT START THE ENGINE. DO NOT OPERATE THE COMPRESSOR

BLW–GROUND : BELOW 1.5 VOLTS WITH THE IGNITION SW ON AND TURN THE BLOWER MOTOR

S5–SG : 4–6 VOLTS WITH THE IGNITION SW ON

SG–GROUND : ALWAYS CONTINUITY

AMH–AMC : 1.3–1.9 VOLTS WITH THE IGNITION SW OFF

AIF–GROND : APPROX. 12 VOLTS WITH THE FRESH SW ON

AIR–GROUND ; APPROX. 12 VOLTS WITH THE RECIRC SW ON

FACE–GROUND : APPROX. 12 VOLTS WITH THE FACE SW ON

DEF–GROUND : APPROX. 12 VOLTS WITH THE DEF SW ON

GND–GROUND : ALWAYS CONTINUITY

: PARTS LOCATION

CODE

SEE PAGE

CODE

SEE PAGE

CODE

SEE PAGE

A1

26

A26

28

J15

29

A3

26

A27

28

J18

A

29

A4

26

A28

28

J19

B

29

A13

28

B2

28

J20

A

29

A14

A

28

B3

28

J21

B

29

A15

B

28

D2

26

J28

A

29

A16

28

E7

28

J29

B

29

A17

28

F10

26

A18

28

J3

29

: RELAY BLOCKS

CODE

SEE PAGE

RELAY BLOCKS (RELAY BLOCK LOCATION)

1

22

ENGINE ROOM R/B (ENGINE COMPARTMENT LEFT)

: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR

CODE

SEE PAGE

JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)

1R
1V

24

COWL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)

1W

24

(

)

2C

20

ENGINE ROOM MAIN WIRE AND ENGINE ROOM J/B (ENGINE COMPARTMENT LEFT)

2J

20

COWL WIRE AND ENGINE ROOM J/B (ENGINE COMPARTMENT LEFT)

2K

20

COWL WIRE AND ENGINE ROOM J/B (ENGINE COMPARTMENT LEFT)

: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS

CODE

SEE PAGE

JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)

EB1

34

COWL WIRE AND ENGINE ROOM MAIN WIRE (UNDER THE ENGINE ROOM J/B)

EB2

34

COWL WIRE AND ENGINE ROOM MAIN WIRE (UNDER THE ENGINE ROOM J/B)

IG1

36

INSTRUMENT PANEL WIRE AND COWL WIRE (RIGHT SIDE OF INSTRUMENT PANEL J/B)

IH1

36

COWL WIRE AND A/C SUB WIRE (BEHIND RADIO AND PLAYER)

IM2

38

ENGINE ROOM MAIN WIRE AND COWL WIRE (RIGHT KICK PANEL)

IM3

38

ENGINE ROOM MAIN WIRE AND COWL WIRE (RIGHT KICK PANEL)

: GROUND POINTS

CODE

SEE PAGE

GROUND POINTS LOCATION

EC

34

LEFT RADIATOR SIDE SUPPORT

II

36

INSTRUMENT PANEL BRACE LH

SERVICE HINTS

240

: SPLICE POINTS

CODE

SEE PAGE

WIRE HARNESS WITH SPLICE POINTS

CODE

SEE PAGE

WIRE HARNESS WITH SPLICE POINTS

E3

34

ENGINE ROOM MAIN WIRE

I4

38

A/C SUB WIRE

I3

38

COWL WIRE

I10

38

COWL WIRE

1

2

1

2

X

4

1

4

1

3 4 5 6 7 8 9 10

11

13

14 15 16 17 18 19 20 X X 23 24 25 26

X 2 3 4 5 6 7 8

9 10 X X 13 14 X 16

1

2

1

2

1

2

1 X 3 X 5 6 7

1

2 3 4 5

1

2

X 4 5 6 7 8

1

2

2

16

X X

X 5

9

13

X

1

B B B B

(HINT : SEE PAGE 7)

A

A

A

A

A

(HINT : SEE PAGE 7)

C C

(HINT : SEE PAGE 7)

A A

(HINT : SEE PAGE 7)

B

B

E E

E

(HINT : SEE PAGE 7)

B B

D D D

(HINT : SEE PAGE 7)

X X

F

F

(HINT : SEE PAGE 7)

D D X

X

(HINT : SEE PAGE 7)

A 1

DARK GRAY

A 3

GRAY

A 4

BLACK

A13

A16 BLACK

A17 BLACK

A18

A26 BLACK

A27

A28

B 2

B 3

D 2

ORANGE

E 7

F10

J 3

J15

A

BLACK

J18

B

BLACK

J19

A

BLACK

J20

B

BLACK

J21

A

J28

B

J29

A

A14

B

A15

3

1

2

3

4

BLACK

1

2

BLACK

A

241

MEMO