Lexus ES300 (1997 year). Manual — part 629
112
P 1
BACK–UP LIGHT SW (PARK/NEUTRAL POSITION SW)
2–8 : CLOSED WITH THE SHIFT LEVER IN R POSITION
: PARTS LOCATION
CODE
SEE PAGE
CODE
SEE PAGE
CODE
SEE PAGE
J25
J37
R 9
J28
A
P 1
J29
B
R 7
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODE
SEE PAGE
JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
IJ
COWL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)
1S
FLOOR WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)
1V
COWL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODE
SEE PAGE
JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IK2
38
ENGINE WIRE AND COWL WIRE (UNDER THE GLOVE BOX)
IK3
38
ENGINE WIRE AND COWL WIRE (UNDER THE GLOVE BOX)
: GROUND POINTS
CODE
SEE PAGE
GROUND POINTS LOCATION
BN
40
UNDER THE LEFT CENTER PILLAR
: SPLICE POINTS
CODE
SEE PAGE
WIRE HARNESS WITH SPLICE POINTS
CODE
SEE PAGE
WIRE HARNESS WITH SPLICE POINTS
B 9
40
FLOOR WIRE
B14
40
FLOOR WIRE
C
C
D
D
X
X
(HINT : SEE PAGE 7)
X
X
F
F
(HINT : SEE PAGE 7)
A
A
A
A
A
A
(HINT : SEE PAGE 7)
X
2
8
3
1
3
1
J25
J37
P 1
GRAY
R 7
R 9
A
J28
B
J29
X
A
A
A
X
X
X
(HINT : SEE PAGE 7)
X
X
SERVICE HINTS
FROM POWER SOURCE SYSTEM (SEE PAGE 56)
IJ1
7
IG1
10
B
E
A
E
IG1
1
E 2
F
2
F
1
C
1
A
1
B
B
A
B
R–B
G–R
R
R
R
R–
G
R–
G
W–
B
B–
G
B
B–
R
B–
R
B
–
R
G
–
R
R–
B
R–
B
JUNCTION
CONNECTOR
B–
R
R–
B
R–
B
G–
R
G–
R
J
UNC
T
IO
N
CO
NNE
CT
O
R
B
J3
4
, J3
5
A
C
,
F
8
J
U
NCT
IO
N
C
O
NNE
CT
O
R
UNCTION
ONNECTOR
9
JUNCTION
CONNECTOR
B
J10
, J11
A
10
0A
A
L
T
F
U
SI
BL
E
L
IN
K
BL
O
C
K
F 6
A
F1
1
F
,
FL MAIN
3. 0W
BATTERY
COURTESY
ONT LH
A
F
A
F
J
UNCT
IO
N
CO
NN
E
C
T
O
R
J10
A
1
A
II
J15
JUNCTION
CONNECTOR
2
1
5
7
A
E
C
A
3
6
A
C
E
A
R–
G
W–
J 5
J 2
J
C
J1
AUTOMATIC LIGHT
CONTROL SENSOR
A32
R–
L
DOOR
SW FR
D 9
JUNCTION
CONNECTOR
J 8
T
H
IG
B
A
CTY
OFF
TAIL
HEAD
LI
G
H
T
CO
NT
RO
L
S
W
AUTO
12
16
W–
B
R–
L
COMBINATION
SW
C11
15A
ECU–IG
1D
8
7. 5A
DOME
2J
12
1W
1
1G
8
3
2
1
2
2B
3
1
4
H
EAD
RE
L
A
Y
40
A
MA
IN
2G
3
2K
8
1
2
3
1C
6
1B
4
5
TA
IL
L
IG
H
T R
E
L
A
Y
1G
1
1S
7
1J
8
1J
7
B
113
AUTOMATIC LIGHT CONTROL
114
WITH THE IGNITION SW TURNED ON, CURRENT FLOWS FROM THE ECU–IG FUSE TO TERMINAL 1 OF THE AUTOMATIC LIGHT
CONTROL SENSOR. VOLTAGE IS APPLIED AT ALL TIMES TO TERMINAL 2 OF THE AUTOMATIC LIGHT CONTROL SENSOR
THROUGH THE DOME FUSE, AND TO TERMINAL 7 OF THE AUTOMATIC LIGHT CONTROL SENSOR THROUGH THE TAILLIGHT
RELAY (COIL SIDE), AND TO TERMINAL 5 OF THE AUTOMATIC LIGHT CONTROL SENSOR THROUGH THE HEAD RELAY (COIL
SIDE).
AUTOMATIC LIGHT CONTROL
WHEN THE LIGHT CONTROL SW IS AT AUTO POSITION, IF THE AUTOMATIC LIGHT CONTROL SENSOR DETECTS A DECREASE
IN THE AMBIENT LIGHT (TO BETWEEN APPROX. 90 AND APPROX. 475 LUX), THE AUTOMATIC LIGHT CONTROL SENSOR IS
ACTIVATED. ABOUT 5 SECONDS AFTER IT IS ACTIVATED, CURRENT FLOWS FROM TERMINAL 6 OF THE SENSOR TO TERMINAL
12 OF THE LIGHT CONTROL SW
TERMINAL 16
GROUND, LIGHTING UP THE HEADLIGHT AND TAILLIGHT.
IF THE AMBIENT LIGHT DROPS BELOW APPROX. 90 LUX, THE AUTOMATIC LIGHT CONTROL SENSOR IS ACTIVATED AND
ABOUT 3 SECONDS LATER, CURRENT FLOWS FROM TERMINAL 6 OF THE SENSOR TO TERMINAL 12 OF THE LIGHT CONTROL
SW
TERMINAL 16
GROUND, LIGHTING UP THE HEADLIGHT AND TAILLIGHT.
WHEN THE LIGHT CONTROL SW IS AT AUTO POSITION AND ACTIVATION OF THE AUTOMATIC LIGHT CONTROL SENSOR HAS
TURNED ON THE HEADLIGHTS AND TAILLIGHTS, IF THE AUTOMATIC LIGHT CONTROL SENSOR DETECTS THE AMBIENT LIGHT
ABOVE APPROX. 1000 LUX, THE SENSOR IS TURNED OFF AFTER ABOUT 5 SECONDS. SO THE CURRENT FROM TERMINAL 6
OF THE SENSOR TO TERMNAL 12 OF THE LIGHT CONTROL SW IS CUT OFF, AND THE HEADLIGHTS AND TAILLIGHTS TURN OFF.
A32
AUTOMATIC LIGHT CONTROL SENSOR
2–GROUND : ALWAYS APPROX. 12 VOLTS
1–GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
6–GROUND : CONTINUITY WITH THE LIGHT CONTROL SW AT AUTO POSITION
3–GROUND : CONTINUITY WITH THE DRIVER’S DOOR OPEN
C11
COMBINATION SW
12–16 : CLOSED WITH THE LIGHT CONTROL SW AT AUTO POSITION
: PARTS LOCATION
CODE
SEE PAGE
CODE
SEE PAGE
CODE
SEE PAGE
A32
F11
F
J11
B
C11
J 2
J15
D 9
J 5
J19
F 6
A
J 8
J34
A
F 8
C
J10
A
J35
B
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODE
SEE PAGE
JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1B
COWL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)
1C
COWL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)
1D
INSTRUMENT PANEL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)
1G
INSTRUMENT PANEL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)
1J
COWL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)
1S
FLOOR WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)
1W
COWL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL
2B
ENGINE ROOM MAIN WIRE AND ENGINE ROOM J/B (ENGINE COMPARTMENT LEFT)
2G
ENGINE ROOM MAIN WIRE AND ENGINE ROOM J/B (ENGINE COMPARTMENT LEFT)
2J
COWL WIRE AND ENGINE ROOM J/B (ENGINE COMPARTMENT LEFT)
2K
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)
IG1
INSTRUMENT PANEL WIRE AND COWL WIRE (RIGHT SIDE OF INSTRUMENT PANEL J/B)
IJ1
38
INSTRUMENT PANEL WIRE AND COWL WIRE (UNDER THE GLOVE BOX)
: GROUND POINTS
CODE
SEE PAGE
GROUND POINTS LOCATION
II
INSTRUMENT PANEL BRACE LH
SYSTEM OUTLINE
SERVICE HINTS
115
AUTOMATIC LIGHT CONTROL
: SPLICE POINTS
CODE
SEE PAGE
WIRE HARNESS WITH SPLICE POINTS
CODE
SEE PAGE
WIRE HARNESS WITH SPLICE POINTS
E 2
COWL WIRE
1 2 3 X 5 6 7 X
X
X
12
X 16
X X
1
1
1
1
2
C C C
(HINT : SEE PAGE 7)
A
A
A
A
A
A
(HINT : SEE PAGE 7)
A
A
A
A
A
A
(HINT : SEE PAGE 7)
X
X
E
E
F
F
(HINT : SEE PAGE 7)
X
X
(HINT : SEE PAGE 7)
A
A
A
A
A
A
(HINT : SEE PAGE 7)
E
E
E
(HINT : SEE PAGE 7)
B
B
(HINT : SEE PAGE 7)
B
B
(HINT : SEE PAGE 7)
A32
BLACK
C11
D 9
J 2
BLACK
J 5
GRAY
J 8
GRAY
J15
J19
BLACK
A
F 6
C
F 8
A
J10
B
J11
F
F11
A
BLACK
J34
B
BLACK
J35
E
E
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