2002 CAMRY (EWD461U)

88

Engine Control (2AZ–FE)

2

3

1

5

3

2

5

1

ED

BQ

1

1

1A

2

1C

5

1D

4

1C

6

1K

6

1C

7

1C

4

1B

3

1B

9

1E

2

1

2E

2

2A

2

IF6

3

2

7

1

6

AM2

AM1

ACC

IG1

ST1

IG2

ST2

IF1

8

10A
IG2

1C

8

ID1

5

M

5

4

B–Y

B–R

B–Y

B–Y

B–W

B–R

B–O

G–R

B–W

B–G

W

W–

R

B–

G

W–

R

B–

Y

B–

W

B–

R

B–

R

B–

G

L–

B

B–

W

W–

B

L–

B

G–

R

B–

O

W–

B

F

uel

P

u

m

p

F 8

C/

O

P

N

Re

la

y

2

0

A EF

I

EF

I R

e

la

y

3

0

A AM

2

1

00A

A

L

T

FL MAIN
3. 0W

Battery

5A

A

M

1

Ignition SW

I15

2

1

BQ

W–

B

A

J

unc

ti

on

C

o

n

nec

to

r

J1

1

(T

MMK

Made

)

(T

M

C

M

ade

)

2002 CAMRY (EWD461U)

89

E14

E14

E14

2

1

1

2

ID1

6

1

2

2G

20

2G

8

A

4

A

9

A

10

C

12

C

11

A

1

A

8

A

3

D

24

D

32

E

20

E

28

E

19

2G

17

2K

17

2G

5

I 6

I 6

B–Y

B–W

B–R

BR

B–Y

B–Y

BR

BR

B–O

G–R

B–W

B–W

B–W

B–W

VV

B–

O

G–

R

G

B–

R

B–

W

B–

W

TBP

IGSW

FC

CCV

EVP1

B–

R

B–

Y

B–

W

B–

R

R

L–

W

L–

B

BR

G–

Y

B

R

VSV (Pr

e

s

s

u

re

Sw

it

c

h

in

g

Va

lv

e

)

V1

2

VSV (C

ani

s

ter

C

los

ed

V

a

lv

e

)

V 4

V 6

E 4

Mass Air Flow
Meter

M 1

+B

MREL

BATT

VG

E2G

THA

E2

THW

E2

+B

VG

E2G

THA

Engine Control Module

E 6(A), E 7(B), E 8(C), E 9(D), E10(E)

B–

W

1

5

3

2

4

B–

W

2

1

2O

5

SB

B–

O

SB

VSV

(EVAP

)

VSV

(EVAP

)

E

ngi

ne C

ool

ant

T

e

m

p

.

S

ens

or

2002 CAMRY (EWD461U)

90

Engine Control (2AZ–FE)

C

17

C

5

C

4

E

31

E

21

E

18

D

9

D

8

A

21

B

22

B

4

D

4

D

23

D

31

C

1

I 6

I 7

IL1

10

IL1

6

IC2

4

ID1

2

IC2

9

IF1

5

P

N

9

6

1K

8

1K

7

1H

8

I 7

I 8

I 8

I 8

BR

BR

BR

BR

BR

BR

BR

BR

Y

B–Y

B–Y

BR

VCC

PTNK

VC

VTA

VTA2

M–

M+

OX1B

HT1B

HAF1A

AF1A+

AF1A–

E1

B–W

BR

BR

B–R

(*3

)

B

L

B–

R

(*3

)

O

W

BR

BR

BR

B–

W

BR

B–

W

(*3

)

B

W

B–

R

LG

Y

Y

YY

P

P

B–

Y

B–

W

B–

Y

BR

BR

P

a

rk

/N

e

u

tra

l

Po

s

it

io

n

SW

A 4

Heated
Oxygen
Sensor

H 5

Air Fuel
Ratio Sensor

A 8

Throttle Position
Sensor

T 3

Vapor Pressure
Sensor

V11

Engine Control Module

E 6(A), E 7(B), E 8(C), E 9(D), E10(E)

1

6

2

3

3

5

4

1

2

GE01

M+

M–

VTA2

VTA

VC

PTNK

NSW

STA

3

4

2

4

1

2

IL1

5

IL1

1

IL1

9

B

L

BR

1

3

(*3

)

E2

OX

HT

+B

E1

SB

SB

(*5)

BR–Y(* 4)

2002 CAMRY (EWD461U)

91

C

7

D

1

E

27

E

34

E

26

E

1

E

2

E

3

E

4

A

12

A

13

B

19

15A
IGN

From Power Source System (See Page 62)

1L

10

2G

1

2G

16

2G

13

E13

E13

E13

2

1

2

1

2

1

2

1

2G

7

2M

4

3A

3A

61

51

3A

3A

101

91

(* 1)
(* 2)

IJ1

7

A

A

A

A

A

A

A

A

I 7

I 8

I 8

2

1

1

2

EG

BR

BR

BR

BR

BR

BR

BR

G22+

NE–

NE+

KNK1

E03

BR

BR

B–R

B–R

SB

SB

B–

R

B–

R

B–

R

B–

R

B–

R

L

R

Y

W

G

B–

Y

G–

W

G

–

W

G–

W

W

G

W–

B

(*3

)

B–

W

L

(*3

)

G

R

(*3

)

W

W–

B

BR

BR

C

a

m

s

haf

t

Po

s

it

io

n

S

ens

or

C 1

C

ran

ks

haf

t

P

o

s

it

ion S

ens

or

C 3

K

noc

k

S

ens

or

K 2

In

je

c

to

r

N

o

. 1

I 7

In

je

c

to

r

N

o

. 2

I 8

In

je

c

to

r

N

o

. 3

I 9

In

je

c

to

r

N

o

. 4

I1

0

S

top Li

ght

SW

S1

4

Junction
Connector

J 1

10

A

T

A

IL

1

0

A

M

IR HT

R

1

5

A ST

O

P

Engine Control Module

E 6(A), E 7(B), E 8(C), E 9(D), E10(E)

# 10

#20

# 30

# 40

ELS

ELS2

STP

* 1 : Automatic A/C
* 2 : Manual A/C
* 3 : Shielded

(* 1)
(* 2)

1

2

1

SB

SB

* 4 : TMMK Made
* 5 : TMC Made

L

I 8

L

Cl

o

c

k

2002 CAMRY (EWD461U)

92

Engine Control (2AZ–FE)

10A
ETCS

From Power Source System (See Page 62)

1B

2

A

2

E

8

E

9

E

7

E

6

C

6

D

7

A

26

A

23

A

28

A

27

A

22

A

29

C

16

C

15

EH

E15

E15

E15

E

10

11 E

3

2

3

2

3

2

3

2

L–

R

L–

R

R–

W

P

LG

–B

L–Y

W–

R

W–

R

W–

R

W–

R

Ignition Coil
and Igniter No. 1

I 1

Ignition Coil
and Igniter No. 2

I 2

Ignition Coil
and Igniter No. 3

I 3

Ignition Coil
and Igniter No. 4

I 4

2

1

BR

BR

E01

E02

ME01

E04

VCP2

VPA2

EPA2

VCPA

VPA

EPA

OCV+

OCV–

W–

B

W–

B

W–

B

W–

B

R

W–

R

LG

–B

B–

R

L–

Y

LG

B–

W

Y

W–

B

W–

B

W–

B

W–

B

+BM

IGT1

IGT2

IGT3

IGT4

6

2

3

4

5

1

W–R

W–R

A18

V

V

T

S

o

lenoi

d

V 7

Engine Control Module

E 6(A), E 7(B), E 8(C), E 9(D), E10(E)

E

23

W–

R

IGF

VCP2

VPA2

EP2

VCP1

VPA1

EP1

SB

SB

Accelerator Position Sensor

2002 CAMRY (EWD461U)

93

IF3

2

IF4

17

IF4

18

IF4

16

IF3

6

IJ1

6

A

19

A

14

A

11

A

5

A

18

B

14

B

17

B

15

B

27

B

26

B

16

B

34

C

9

C

2

CODE

RXCK

TXCT

V–W

G–R

Y–G

B–O

W

P–B

R

V–

W

G–

R

G–

W

R–

L

L–

Y

V

L

G–

W

L–W

V–

W

G–

R

Y–

G

B–

O

W

P–

B

R

4

3

5

I14

1

IJ1

3

IJ1

8

IF4

4

3B

3B

108

118

3B

3B

68

78

(*1)
(*2)

3B

3B

88

98

A

15

B

33

B

31

C

10

B

12

B

13

(*2)

A

38

(*1)

A

39

P

o

w

e

r S

teer

ing O

il

Pr

e

s

s

u

re

SW

P 1

A/C Control Assembly

A13(A)

R–

W

P–

L

(*1

)

W

B

(*1

)

Y–

B

BR

BR

P–

L

(*1

)

W

B

(*1

)

Y–

B

BR

BR

IL2

16

PS

A/CS

A/CI

EOM

CODE

RXCK

TXCT

IMLD

KSW

FAN

ACMG

SPD

W

THWO

TACH

SIL

TC

WFSE

E 6(A), E 7(B), E 8(C), E 9(D), E10(E)
Engine Control Module

(*6

)

(*6

)

(*6

)

* 1 : Automatic A/C
* 2 : Manual A/C
* 6 : w/ Engine Immobiliser System

A

/C

C

ontr

o

l

A

s

s

e

m

b

ly

(*1

)

H

eat

er

C

ont

ro

l

S

W

(*2

)

U

n

lo

ck W

a

rn

in

g

S

W

F

A

N NO

. 1

Re

la

y

F

A

N NO

. 2

Re

la

y

F

A

N NO

. 3

Re

la

y

D

iode

H10(B)
Heater Control SW

(*2)

(*2

)

(*2

)

(*2

)

(*2

)

G–

W

C

30

PR2

F

A

N NO

. 1

Re

la

y

F

A

N NO

. 2

Re

la

y

F

A

N NO

. 3

Re

la

y

A/CS

A/CI

SB

W

(*1)

SB

Ignition Key Cylinder Light

Transponder Key Amplifier

2002 CAMRY (EWD461U)

94

Engine Control (2AZ–FE)

2M

1

7. 5A
OBD

From Power Source System (See Page 62)

2A

4

II

IJ

3B

3B

81

91

3B

3B

82

92

3B

3B

89

99

3B

3B

79

89

3B

3B

61

71

3B

3B

62

72

3B

3B

90

100

(* 1)
(* 2)

3A

3A

92

82

3A

3A

102

92

3A

3A

67

57

3A

3A

117

107

(* 1)
(* 2)

A

27

A

36

B

16

A

12

A

11

A

20

Combination Meter

C 7(A), C 8(B)

3B

3B

76

86

3B

3B

70

80

3B

3B

66

76

(* 1)
(* 2)

3B

3B

60

70

2L

8

2R

8

W–

B

W

BR

W–

B

S

B

BR

SG

CG

V–W

G–R

Y–G

B–O

W

P–B

R

P–

B

W

B–

O

B

–

O

W

W

G–

R

W

W

SB

W

B

15

13

7

9

16

5

4

Data Link
Connector 3

D 3

* 1 : Automatic A/C
* 2 : Manual A/C

(* 1)
(* 2)

(* 1)
(* 2)

WFSE

TC

SIL

TAC

BAT

(* 2)

(* 1)

Te

m

p

.

T

a

c

hom

et

er

S

peed

om

et

er

Malfunction

SB

(* 1)
(* 2)

(* 1)
(* 2)

A

35

W

W

19 A

IL2

5

IL2

3

IG+

1

V 1

SI

3

2

SE

P

L

(*1)
(*2)

3B

3B

115

125

3B

3B

95

105

(*1)
(*2)

IL2

14

W

R–

L

10A
GAUGE1

Vehicle Speed
Sensor

(Combination Meter)

2002 CAMRY (EWD461U)

95

The engine control system utilizes a microcomputer and maintains overall control of the engine, transaxle etc. An outline of
the engine control is given here.

1. Input Signals

(1) Engine coolant temp. signal circuit

The engine coolant temp. sensor detects the engine coolant temp. and has a built–in thermistor with a resistance, which
varies according to the engine coolant temp.. The engine coolant temp. which is input into TERMINAL THW of the
engine control module as a control signal.

(2) Intake air temp. signal circuit

The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp. which is input as a
control signal to TERMINAL THA of the engine control module.

(3) Oxygen density signal circuit

The oxygen density in the exhaust emission is detected by the heated oxygen sensor and input as a control signal to
TERMINAL OX1B of the engine control module.

(4) RPM signal circuit

Camshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor.
Camshaft position is input as a control signal to TERMINAL G22+ of the engine control module, and engine RPM is
input into TERMINAL NE+.

(5) Throttle position signal circuit

The throttle position sensor detects the throttle valve opening angle as a control signal, which is input into TERMINAL
VTA of the engine control module.

(6) Vehicle speed circuit

The vehicle speed sensor detects the vehicle speed and inputs a control signal to TERMINAL SPD of the engine control
module.

(7) Battery signal circuit

Voltage is constantly applied to TERMINAL BATT of the engine control module. With the ignition SW turned on, the
voltage for engine control module start–up power supply is applied to TERMINAL +B of the engine control module via
the EFI relay.

(8) A/C SW signal circuit

The A/C control assembly (Automatic A/C) or heater control SW (Manual A/C) inputs the A/C operations into TERMINAL
A/CS of the engine control module.

(9) Stop light SW signal circuit

The stop light SW is used to detect whether the vehicle is braking or not and the signal is input into TERMINAL STP of
the engine control module as a control signal.

(10) Starter signal circuit

To confirm whether the engine is cranking, the voltage is applied to the starter motor during cranking is detected and the
signal is input into TERMINAL STA of the engine control module as a control signal.

(11) Engine knock signal circuit

Engine knocking is detected by knock sensor and the signal is input into TERMINAL KNK1 as a control signal.

(12) Air fuel ratio signal system

The air fuel ratio is detected and input as a control signal into TERMINAL AF1A+ of the engine control module.

System Outline

2002 CAMRY (EWD461U)

96

Engine Control (2AZ–FE)

2. Control System

∗

SFI system
The SFI system monitors the engine condition through the signals input from each sensor to the engine control module.
And the control signal is output to TERMINALS #10, #20, #30, #40 of the engine control module to operate the injector
(Inject the fuel). The SFI system controls the fuel injection operation by the engine control module in response to the
driving conditions.

∗

ESA system
The ESA system monitors the engine condition through the signals input to the engine control module from each sensor.
The best ignition timing is decided according to this data and the memorized data in the engine control module and the
control signal is output to TERMINALS IGT1, IGT2, IGT3, IGT4. This signal controls the igniter to provide the best
ignition timing for the driving conditions.

∗

Heated oxygen sensor heater control system
The heated oxygen sensor heater control system turns the heater on when the intake air volume is low (Temp. of
exhaust emissions is low), and warms up the heated oxygen sensor to improve detection performance of the sensor.
The engine control module evaluates the signals from each sensor, and outputs current to TERMINAL HT1B to control
the heater.

3. Diagnosis System

With the diagnosis system, when there is a malfunction in the engine control module signal system, the malfunctioning
system is recorded in the memory. The malfunctioning system can be found by reading the code displayed by the
malfunction indicator lamp.

4. Fail–Safe System

When a malfunction has occurred in any system, if there is a possibility of engine trouble being caused by continued control
based on the signals from that system, the fail–safe system either controls the system by using data (Standard values)
recorded in the engine control module memory or else stops the engine.

2002 CAMRY (EWD461U)

97

E6 (A), E7 (B), E8 (C), E9 (D), E10 (E) Engine Control Module

BATT–E1 : Always 9.0–14.0 volts

VC–E2 : 4.5–5.5 volts (Ignition SW at ON position)

VTA–E2 : 0.3–1.0 volts (Ignition SW on and throttle valve fully closed)

3.2–4.9 volts (Ignition SW on and throttle valve fully open)

VG–E2G : 1.1–1.5 volts (Engine idling and A/C SW off)

THA–E2 : 0.5–3.4 volts (Engine idling and intake air temp. 20

°

C, 68

°

F)

THW–E2 : 0.2–1.0 volts (Engine idling and coolant temp. 80

°

C, 176

°

F)

IGF–E1 : 4.5–5.5 volts (Ignition SW at ON position)

Pulse generation (Engine idling)

SIL–E1 : Pulse generation (During transmission)

TACH–E1 : Pulse generation (Engine idling)

STA–E1 : 6.0 volts or more (Engine cranking)
FC–E01 : 9.0–14.0 volts (Ignition SW at ON position)

SPD–E1 : Pulse generation (Ignition SW on and rotate driving wheel slowly)

W–E01 : Below 3.0 volts (Ignition SW at ON position)

NSW–E1 : 9.0–14.0 volts (Ignition SW on and other shift position in P or N position)

0–3.0 volts (Ignition SW on and shift position in P or N position)

EVP1–E01 : 9.0–14.0 volts (Ignition SW at ON position)

STP–E1 : 7.5–14.0 volts (Ignition SW on and brake pedal depressed)

Below 1.5 volts (Ignition SW on and brake pedal released)

KNK1–E1 : Pulse generation (Engine idling)

PSW–E1 : 9.0–14.0 volts (Ignition SW at ON position)

HAF1A–E04 : Below 3.0 volts (Engine idling)

IGSW–E1 : 9.0–14.0 volts (Ignition SW at ON position)

MREL–E1 : 9.0–14.0 volts (Ignition SW at ON position)

G22+, NE+ –NE– : Pulse generation (Engine idling)

OCV+ –OCV– : Pulse generation (Ignition SW at ON position)
HT1B–E1 : 9.0–14.0 volts (Engine idling)

Below 3.0 volts (Ignition SW at ON position)

AF1A+ –E1 : 3.3 volts (Ignition SW at ON position)
AF1A– –E1 : 3.0 volts (Ignition SW at ON position)

OX1B–E1 : Pulse generation (Maintain engine speed at 2500 rpm for 90 sec. after warming up)

IGT1, IGT2, IGT3, IGT4–E1 : Pulse generation (Engine idling)

#10, #20, #30, #40–E01 : 9.0–14.0 volts (Ignition SW at ON position)

Pulse generation (Engine idling)

: Parts Location

Code

See Page

Code

See Page

Code

See Page

A4

40 (2AZ–FE)

E10

E

42

J1

43

A8

40 (2AZ–FE)

F8

44

J11

44

A13

A

42

H5

40 (2AZ–FE)

K2

41 (2AZ–FE)

A18

42

H10

B

43

M1

41 (2AZ–FE)

C1

40 (2AZ–FE)

I1

41 (2AZ–FE)

P1

41 (2AZ–FE)

C3

40 (2AZ–FE)

I2

41 (2AZ–FE)

S14

43

C7

A

42

I3

41 (2AZ–FE)

T3

41 (2AZ–FE)

C8

B

42

I4

41 (2AZ–FE)

V1

41 (2AZ–FE)

D3

42

I7

41 (2AZ–FE)

V4

41 (2AZ–FE)

E4

40 (2AZ–FE)

I8

41 (2AZ–FE)

V6

41 (2AZ–FE)

E6

A

42

I9

41 (2AZ–FE)

V7

41 (2AZ–FE)

E7

B

42

I10

41 (2AZ–FE)

V11

45

E8

C

42

I14

43

V12

45

E9

D

42

I15

43

: Relay Blocks

Code

See Page

Relay Blocks (Relay Block Location)

1

22

Engine Room R/B (Engine Compartment Left)

Service Hints

2002 CAMRY (EWD461U)

98

Engine Control (2AZ–FE)

: Junction Block and Wire Harness Connector

Code

See Page

Junction Block and Wire Harness (Connector Location)

1A

1B

1C

25

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

1D

25

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

1E

1H

1K

25

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

1L

25

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

2A

28

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

2E

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)

2K

28

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

2L

2M

29

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

2O

29

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

2R

34 (*1)

3A

35 (*3)

3A

36 (*2)

37 (*4)

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

34 (*1)

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

3B

35 (*3)

3B

36 (*2)

37 (*4)

∗

1 : TMC Made Automatic A/C

∗

2 : TMC Made Manual A/C

∗

3 : TMMK Made Automatic 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)

IC2

52

Instrument Panel Wire and Floor Wire (Left Kick Panel)

ID1

52

Engine Room Main Wire and Floor Wire (Left Side of Driver Side J/B)

IF1

IF3

52

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

IF4

52

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

IF6

IJ1

54

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

IL1

54

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

IL2

54

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

: Ground Points

Code

See Page

Ground Points Location

ED

50 (2AZ–FE)

Left Fender

EG

50 (2AZ–FE)

Left Side of Cylinder Head

EH

50 (2AZ–FE)

Intake Side of Cylinder Block

II

52

Cowl Side Panel LH

IJ

52

Instrument Panel Brace LH

BQ

56

Front Side of Rear Quarter Wheel House LH

: Splice Points

Code

See Page

Wire Harness with Splice Points

Code

See Page

Wire Harness with Splice Points

E13

I6

E14

50 (2AZ–FE)

Engine Wire

I7

54

Engine Wire

E15

(

)

g

I8

g

2002 CAMRY (EWD461U)

99

Memo