2002 CAMRY (EWD461U)

282

Manual Air Conditioning

10A
HTR

From Power Source System (See Page 62)

2G

24

2M

7

3

2

4

5

1

1

1

1

1

1

EC

IN

B

1

B

7

B

6

B

5

A

4

B

3

II2

2

II3

4

II3

1

II3

2

IF3

9

IF3

3

1

1

3

2

5

1

1

1

1

2

50A
HTR

1F

1

IF6

2

II2

1

M

1

2

1J

9

1L

3

3

A

1

3A

36

3A

66

10A
ECU–B

2M

6

A

10

1

IK1

A

11

2

IK1

IK1

5

3A

39

3A

19

3A

69

3A

30

1

W

L–B

L–B

Y–G

W–

B

W–

B

W–

B

W–

B

L–

R

L

L–

W

L–

R

L–

R

L

L

L–

B

L–

O

W–

B

L

L–

B

L–

O

L–

B

L–

W

W–

R

L

R–

L

V

LG

–B

L

L–

B

L–

B

W

B–

W

W

W

L–

B

L–

B

W–B

5

1

2

A

ir

In

le

t Co

n

tr

o

l

Se

rv

o

M

o

to

r

A1

9

Blower Resistor

B 5

Heater Control SW

H10(A), H11(B)

A/C Magnetic Clutch

A 3

Blower
Motor

B 3

E

HI

M2

M1

A/CB

LO

+B

REC

FRS

1

HTR
Relay

MG CLT
Relay

10A

A

/C

1

2

A

2

IG+

B–W

1

3

2

4

Y–G

L–B

L–

B

L–

W

(* 2)

20

(* 1)

3A

3A

29

(* 2)

(* 1)

2002 CAMRY (EWD461U)

283

A

17

1 IG1

IG1

10

A

18

6 IG1

A

19

7 IG1

A

20

8 IG1

A

21

9 IG1

IG1

5

A

7

A

8

A

25

A

30

A

27

A

16

A

14

A

6

Y–G

L–B

Y–G

W–B

L–

B

W–

B

B–

W

LG

–R

L–

R

BR

–

W

GR

B–

W

LG

–R

L–

R

BR

–

W

GR

P–

L

P

V

B–

W

L

V

Y–

G

LG

–

B

7

8

1

2

3

5

6

4

5

1

2

3

E

ngi

ne C

ontr

o

l Modul

e

DE

F

Re

la

y

T

u

rn

S

ignal

F

las

her

R

e

la

y

A21

Air Mix Control Servo Motor

A20

Heater Control SW

H10(A), H11(B)

DEF

F/D

FOOT

B/L

FACE

TCOL

THOT

S5

SG

TEST

LP

RDEF

1

IG

E

DEF

FDEF

HEAT

B/L

FACE

MC

MH

SS

SG

TP

* 1 : TMC Made
* 2 : TMMK Made

Air Vent Mode Servo Motor

2002 CAMRY (EWD461U)

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Manual Air Conditioning

A

32

3A

34

3A

24

3A

64

II

A

12

A

13

IJ1

3

IJ1

8

D

31

B

33

B

32

E

28

C

23

B

1

IF2

4

1H

10

1K

10

1

2

2

1

1

4

EB

EF

EG

IL1

7

IF2

2

A1

6

A/

C

L

o

c

k

Se

n

s

o

r

A 3

P 2

J

unc

ti

on C

onnec

to

r

J 1

3

A

2

A

Engine Control Module

E 7(B), E 8(C), E10(E)

Heater Control SW

H10(A), H11(B)

A/C

ACID

GND

ACMG

A/CS

A/CI

THR

E2

LCKI

PRE

Y–G

W–B

W

Y–

B

L–

W

BR

W–

L

L–

B

L–

W

L–

W

W

Y–

B

W

Y–

B

W–

B

SB

W–

B

BR

BR

BR

W–

B

BR

BR

D 1

L–W

L–W

(*3

)

(*3

)

(* 4)

(* 4)

C

2

(* 4)

B

3

(* 3)

2M

8

2R

8

W–

B

(*3

)

(*4

)

L–

B

* 3 : 1MZ–FE
* 4 : 2AZ–FE

Diode

(A/C No. 1)

A

/C

T

her

m

is

to

r

Pr

e

s

s

u

re

SW

2002 CAMRY (EWD461U)

285

1. Heater Blower Motor Operation

∗

Low speed operation
When the heater control SW is moved to LO position, current flows to TERMINAL LO of the heater control SW to
GROUND, activating the HTR relay. This causes the current to flow from the HTR (50A) fuse to TERMINAL 5 of the HTR
relay to TERMINAL 3 to TERMINAL 2 of the blower motor to TERMINAL 1 to TERMINAL 1 of the blower resistor to
TERMINAL 4 to GROUND, causing the blower motor to rotate at low speed.

∗

Medium speed operation (Operation at M1, M2)
When the blower SW is moved to M1 position, current flows to TERMINAL LO of the heater control SW to GROUND,
turning the HTR relay to switch on. This causes the current to flow from the HTR (50A) fuse to TERMINAL 5 of the HTR
relay to TERMINAL 3 to TERMINAL 2 of the blower motor to TERMINAL 1 to TERMINAL 1 of the blower resistor to
TERMINAL 2 to TERMINAL (B) 5 of the heater control SW to GROUND. At this time, the blower resistance of the blower
resistor is less than at low speed, so the blower motor rotates at medium low speed.
When the blower SW is moved to M2 position, current flows through the motor flows from TERMINAL 1 of the blower
resistor to TERMINAL 3 to TERMINAL (B) 6 of the heater control SW to GROUND. At this time, resistance of the blower
resistor is less than at M1 position, so the blower motor rotates at medium high speed.

∗

High speed operation
When the blower SW is moved to HIGH position, current flows to TERMINAL LO of the heater control SW to GROUND,
turning the HTR relay to switch on.
This causes the current to flow from the HTR (50A) fuse to TERMINAL 5 of the HTR relay to TERMINAL 3 to TERMINAL
2 of the blower motor to TERMINAL 1 to TERMINAL (B) 7 of the heater control SW to GROUND, causing the blower
motor to rotate at high speed.

HTR Relay

1–2 : Closed with the ignition SW on and the heater control SW on

MG CLT Relay

5–3 : Closed with the ignition SW on, the heater control SW on and the A/C SW on or the heater control SW at DEF position

P2 Pressure SW

1–4 : Open with pressure 2.0 kgf/cm

2

(29 psi, 196 kpa) or above 32 kgf/cm

2

(464 psi, 3138 kpa)

: Parts Location

Code

See Page

Code

See Page

Code

See Page

A3

38 (1MZ–FE)

B3

42

E10

E

42

A3

40 (2AZ–FE)

B5

42

H10

A

43

A16

42

D1

38 (1MZ–FE)

H11

B

43

A19

42

D1

40 (2AZ–FE)

J1

43

A20

42

E7

B

42

P2

39 (1MZ–FE)

A21

42

E8

C

42

P2

41 (2AZ–FE)

: Relay Blocks

Code

See Page

Relay Blocks (Relay Block Location)

1

22

Engine Room R/B (Engine Compartment Left)

System Outline

Service Hints

2002 CAMRY (EWD461U)

286

Manual Air Conditioning

: Junction Block and Wire Harness Connector

Code

See Page

Junction Block and Wire Harness (Connector Location)

1F

1H

25

Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)

1J

g

g

(

g

)

1K

25

Engine Wire and Engine Room J/B (Engine Compartment Left)

1L

25

Engine Wire and Engine Room J/B (Engine Compartment Left)

2G

28

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

2M

29

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

2R

29

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

3A

36 (*2)

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

3A

37 (*4)

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

∗

2 : TMC Made Manual A/C

∗

4 : TMMK Made Manual A/C

: Connector Joining Wire Harness and Wire Harness

Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

IF2

IF3

52

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

IF6

g

( g

g

)

IG1

52

Instrument Panel Wire and Engine Room Main Wire (Instrument Panel Brace LH)

II2

54

Instrument Panel Wire and Instrument Panel No 3 Wire (Behind the Glove Box)

II3

54

Instrument Panel Wire and Instrument Panel No.3 Wire (Behind the Glove Box)

IJ1

54

Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Reinforcement RH)

IK1

54

Instrument Panel Wire and Instrument Panel No.3 Wire (Behind the Glove Box)

IL1

54

Engine Wire and Instrument Panel Wire (Behind the Glove Box)

: Ground Points

Code

See Page

Ground Points Location

EB

48 (1MZ–FE)

Right Fender

EB

50 (2AZ–FE)

Right Fender

EC

48 (1MZ–FE)

Left Fender

EC

50 (2AZ–FE)

Left Fender

EF

48 (1MZ–FE)

Rear Side of Surge Tank

EG

50 (2AZ–FE)

Left Side of Cylinder Head

II

52

Cowl Side Panel LH

IN

52

Instrument Panel Reinforcement RH

2002 CAMRY (EWD461U)

287

Memo