Lexus ES300 (2002 year). Service manual - part 20

 

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Lexus ES300 (2002 year). Service manual - part 20

 

 

180

Cruise Control

20A
EFI

1B

9

10A
IG2

From Power Source System (See Page 56)

1C

7

IF5

7

3A

51

3A

91

B

2

A

9

2

3

1

5

1C

4

1C

5

2G

5

2G

17

A

2

ED

1B

3

A

8

E

7

E

6

C

4

D

7

D

6

EE

I 6

B

19

IK1

7

2M

4

2G

7

15A
STOP

2G

13

E

18

E

31

E

21

2

3

1

BR

W–

B

W–

B

W–

B

W–

B

W–

B

W

–

B

W–

B

W–

B

W–

B

W–

B

B–

W

W–

B

B–

W

B–

R

B–

Y

B–

R

B–

Y

B–

O

B

–

O

G–

W

G

–

W

W

BR

LG

B–

R

Y

G–W

SB

Engine Control Module

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

S

top

 Li

g

h

t S

W

S1

3

T

h

ro

tt

le

 P

o

s

iti

on

 S

e

n

so

r

T 3

E01

E02

ME01

E04

E05

VTA1

VTA2

VC

MREL

+B1

BATT

IGSW

STP

4

EF

I R

e

la

y

1

2

I 2

A

1

B–

R

+B

B–

R

2G

8

2G

20

VC

E2

VTA

VTA2

B–

O

4

3

2P

5

B–

O

IF4

12

IF5

5

B

12

R–

B

ST1–

R–

B

A

31

L

TRC–

A

25

G

TRC+

ENG–

B

30 A

A

24

W

ENG+

NEO

BR

–

W

17 A

IF4

22

IF4

7

IF4

8

IF4

9

IF4

10

NEO

ENG+

ENG–

TRC+

TRC–

L

W

B

G

BR

–

W

B

26

C

9

C

18

C

11

C

20

Skid Control ECU

S 6(B), S 7(C)

2O

W

5

10A
ETCS

1B

2

IL2

1

B

6

L–

R

L–

R

+BM

W

L–

R

1H

4

1K

9

181

E

28

E

30

E

17

E

16

D

17

D

16

D

19

D

18

D

12

I 6

B

10

B

23

W–L

Y–B

BR

BR

BR

–

W

G

Y–

R

Y–

B

L–

Y

L–R

R–

B

B–

W

GR

Y

–

B

W–

L

Engine Control Module

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

Electronically Controlled Transmission Solenoid

E 1(A), E 2(B)

E2

THO

SLT+

SLT–

SL2+

SL2–

SL1+

SL1–

SR

4

D

E2

OT

SLT+

SLT–

SL2+

SL2–

SL1+

SL1–

SR

D

13

L

S4

S4

D

15

D

14

G–

B

G–

R

SL3–

SL3+

SL3–

SL3+

A

4

A

1

B

1

B

5

B

4

B

8

B

3

B

7

B

2

B

6

A

3

A

6

IK1

2

A

27

B–

R

VCP2

A

23

W–

R

VPA2

A

28

LG

–B

EPA

A

29

LG

EPA2

A

22

L–

Y

VPA

A

26

R

VCPA

4

2

1

6

5

3

VCP1

VPA1

EP1

VCP2

VPA2

EP2

Accelerator Pedal Position Sensor

A25

A

11

TC

P–

B

IF4

17

3B

3B

71

91

(* 1)
(* 2)

3B

3B

51

71

TC

13

P–

B

P

–

B

Data Link
Connector 3

D 2

(* 1)
(* 2)

* 1 : w/ VSC
* 2 : w/o VSC

C

3

C

2

M+

W

M–

B

(Sh

ie

ld

e

d

)

GED1

17 C

2

1

Throttle
Control Motor

T 2

W

W

BR

O

O

G

GR

W

B

W–

L

BR

R

L

Y

W–

B

D

11

Y

DSL

DSL

A

2

W–

B

R

182

Cruise Control

C

1

C

7

EF

B

17

BR

W–

B

W

–

B

BR

E1

E03

SPD

A

A

IK1

6

V–

W

10A

GA

U

G

E

2

2B

6

10A

GA

U

G

E

1

2M

1

R–

L

3A

94

3A

104

3B

3B

107

127

W

Y–

B

3A

57

87 3A

W–

L

IL1

21

Y–B

W–L

W

From Power Source System (See Page 56)

W

W–

L

77

3A

82

92 3A

3B

97

114 3A

3B

*  1 : w/ VSC
*  2 : w/o VSC

ID

BR

W

W–

L

W

1

NSSD

Combination Meter

C 7

S

pee

dom

eter

Power

7

3

A

/T

 I

ndi

c

a

to

r Li

ght

 S

W

A 4

T

rans

m

is

s

ion

C

ont

ro

l S

W

T 8

R–

L

IL2

3

Y–

B

2

MT4

V–

W

BR

A

(* 1)
(* 2)

(* 1)
(* 2)

118

98

3B
3B

128
108

3B
3B

BR

IL1

16

W

3

2

CANCEL

SET/COAST

RES/ACC

CRUISE

CCS

C

o

m

b

inat

ion S

W

C1

0

ECC

J

u

n

ct

ion C

o

n

nec

to

r

J1

1

B

24

W

CCS

(* 1)
(* 2)

(* 1)
(* 2)

74
54

3B
3B

84
64

3B
3B

W

W

W

CRUI

S

E

B

13

P–

L

PI

102

82

3B
3B

122
102

3B
3B

W

W

(* 1)
(* 2)

(* 1)
(* 2)

A

15

BR

EOM

98
78

3B
3B

BR

HP

B

109 3B

1

3B

129

Engine Control Module

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

IF4

4

BR

25

21

33

39

40

Micro Computer

183

The cruise control system is a constant vehicle speed controller in which control of the switch on the instrument panel makes
it possible to automatically adjust the opening of the engine throttle valve without depressing of the accel pedal.

1. Set Operation

When the cruise control main SW is turned on, the system starts preparations necessary for the cruise control and turns on
the indicator light in the combination meter.

2. Set Speed Control

When the SET/COAST SW is operated with the cruise control main SW turned on during travelling, the constant vehicle
speed is controlled.

3. Coast Control

When the SET/COAST SW is kept turned on during cruise control travelling, the engine control module controls the throttle
valve to decelerate the vehicle. Every time the SET/COAST SW is turned on instantaneously, the vehicle speed is
decelerated approximately 1.5 km/h.

4. Accel Control

When the RES/ACC SW is kept turned on during cruise control travelling, the engine control module controls the throttle
valve to accelerate the vehicle. Every time the RES/ACC SW is turned on instantaneously, the vehicle speed is accelerated
approximately 1.5 km/h.

5. Resume Control

When the vehicle speed is within the low speed limit (Approximately 40 km/h, 25 mph) if the cruise control is cancelled, use
of the RES/ACC SW accelerates the vehicle to the speed level used before canceling the cruise control.

6. Manual Cancel Mechanism

If any of the following signals is input during cruise control travelling, the cruise control is cancelled.

∗

The stop light SW is turned on.

∗

The CANCEL SW is turned on.

∗

The cruise control main SW is turned off.

7. Auto Cancel Function

If any of the following conditions is encountered, the cruise control is automatically cancelled.

∗

The stop light SW wiring is faulty or short–circuited.

∗

The vehicle speed signal is faulty.

∗

The electronically controlled throttle malfunctions.

8. Overdrive Control Function

The overdrive control may be cancelled if the vehicle travels on the slope during cruise control travelling.  After the overdrive
control has been cancelled, if the vehicle speed exceeds the overdrive return speed (The set speed is minus 2 km/h, minus
1.2 mph) and it is decided that the slope is finished, the vehicle returns to the overdrive control mode again.

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

(A) 9–Ground : Approx. 12 volts with ignition SW at ON or ST position
(B) 2–Ground : Always approx. 12 volts
(C)1, (C) 4, (C) 7, (D) 6, (D) 7, (E) 6, (E) 7–Ground : Always continuity
(B)19–Ground : Approx. 12 volts with stop light SW at on
(B)24–Ground : Continuity with cruise control main SW at on

Approx. 1540 

Ω

 with CANSEL SW on in cruise control SW

Approx. 240 

Ω

 with RES/ACC SW on in cruise control SW

Approx. 630 

Ω

 with SET/COAST SW on in cruise control SW

C10  Combination SW

2–3 : Approx. 1540 

Ω

 with CANSEL SW on

Approx. 240 

Ω

 with RES/ACC SW on

Approx. 630 

Ω

 with SET/COAST SW on

System Outline

Service Hints

 

 

 

 

 

 

 

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