Lexus ES300 (2002 year). 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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