1 is 300 electrical wiring diagram - 2jzgarage · pdf file1 is 300 electrical wiring diagram 1...
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2002 LEX
US
IS 300 (E
WD
451U)
M
1 2 3 43 421
1 IS 300 ELECTRICAL WIRING DIAGRAM
1
P
1111
1D2
1O1
2
ACC
IG1
IG2
ST2
AM1 4
6
8
7 AM2
8 EA1
IH Cowl sidepanel RH
1
1 1
1D4
7. 5ASTARTER
8 1K
EA12
6 EA1
1B
1 A
3 EA1
1K5
1D5
1 A
B1
B
2B
3B
L
IG
S
9 EA11D1
F
10AGAUGE
9 1K
BD
A
15 D
20 B
See Multiplex
Com
munication
System<
10–3>
P ower S ource Starting and Ignition Charging
1 2 1 2
2
9
2 1 2 1
1
6
W–L
B–L
W W–R
B–L
B
B–Y
G 2
B(A/T )
A
B–Y
GENERATOR
W–B
, W–B
G 1
B–W
B
B–W B–WB–R
WW–L
B–L
W–R
B–R R–L
R–L
R–L
L–R
W–L
L–R
B–L
B(A/T)
B–W
B–R
L–R
B–L
W–L
7. 5A ALT–S
120A ALT
20A AM
2
40A M
AIN
40A AM1
STAR
TERR
ELAY
I12IGNITION SW
S 1 S 2,
STARTER
A B
ENG
INE C
ON
TRO
L MO
DU
LE
DB
E 4
E 6,
B–W
BATTERY
N
, J 2
J 1A
B
JUN
CTIO
N C
ON
NE
CTO
R
RL
5 1
3 2MPX2
20 IA3
1
2
I 2IGN
ITION
CO
IL NO
. 1
I 3IGN
ITION
CO
IL NO
. 2
2
1 1
2
I 4IGN
ITION
CO
IL NO
. 3
1 N 1
NO
ISE FILTE
R(Ignition )
EA Front side of theintake manifold
To Engine Control Module<2–11><2–12>
3 7 6 5 4
1 2 10 9
B–R G B
B–W
B–W
B–W
B–W
B–W
BR
GR
–B
B–R
B–Y
B–L
B–W B–W B–W B–W
I 1IGNITER
P 1PAR
K/N
EUTR
ALPO
SITION
SWGND IN1 IN2 IN3 IGF
C2 C3 C1 +B
To EngineC
ontrolM
odule<2–12>
B (M/T )
B(A/T )
(A/T )(A/T )
B (M/T )
(A/T )
2
1
15 IG1
To Multi–Display<25–2>
B(M
/T )(M
/T )B
–W
B(M/T)
B(M
/T )B–W(M
/T )
C14
CLU
TCH
START S
W
J19JU
NC
TION
CO
NN
EC
TORJ19JU
NC
TION
CO
NN
EC
TOR
C
C
C
C
C
C
2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
51H
34
21
( Con
t. n
ext
page
)2
IS 3
00
25A
EFI
15A
ETC
S12
0AAL
T20
AAM
2
1
11
11
1
4
21D
62E
11O
12C
40A AM1
W–L
B
F15
FUEL
PU
MP
7. 5A OBD
7. 5
AIG
N
2A4
2H13
5 3
1 221
35
2
ACC
IG1
IG2
ST2
AM
14 6
7A
M2
1I
Cow
l sid
epa
nel R
HIH
51D
1
EFI
RE
LAY
12
2
21G
11
V
22
11D
21E
10A
GAU
GE
54 M BLLe
ft qu
arte
r pan
el L
H
12E 2B
5
Cow
l sid
epa
nel R
HIH
8
11
21
2
2A
A
1614
9
1
22
12
413
7
L–W
B–O B–Y
B–O
B–W
W–RW
B–RL–R
L–R
B–L
I12
IGN
ITIO
N S
W
BAT
TER
Y
B–Y
W
L–W
W
W–R
BAT
B–R
TS
B–R
TAC
W–B
SIL
B–O
B–Y
TC
B–Y
CG
B–O
R–L R–L
Po
we
r S
ou
rce
W–B
R–W
W
G–Y
L–R W–B
W–B
W R–L
G–Y
R–W B–
R
V
B–R
J15
JUN
CTI
ON
CO
NN
ECTO
R
En
gin
e C
on
tro
l a
nd
En
gin
e I
mm
ob
ilis
er
Sy
ste
m
A B C GF I K L M N O PB–
R
4 1K
2B4
2I7
2I2
B–R
2B11
B–R
B–R
CIRCUITOPENINGRELAY
B–R
20IA
3
C 9MALFUNCTIONINDICATOR LAMP[COMB. METER]
21
F12FUEL PUMP RESISTOR
FUEL PMPRELAY
13
33
24
33
B–O
G–R
H
G–W
G–W
G–W
G–R
L–R
G–R
L–R
W–B
19IA
3
1EA
1
EBC
ente
r sid
e of
the
inta
ke m
anifo
ld
BRBR
BR
5SG
D 5
DAT
A L
INK
CO
NN
EC
TOR
3
15WFS
E LG
LGJ
EA14
B–R
QB–
R
B–W
17 7
G–W
EA34
From CenterAirbagSensor Assembly<18–3>
From Skid ControlECU<16–9><17–6>
B–Y
6 A/B
B
B
To CombinationMeter<22–2>
8 2G
B–R
B–R
2M8
2E5
B
DB–
R
B–R
B–R
E
2002 LEX
US
IS 300 (E
WD
451U)
M
7 865
2 IS 300 (Cont’ d) (Cont. next page)
17 A 4 A 13 A 7 A 21 C 11 E 15 E 17 C 14 E 16 C 13 E
1
2
2
1
1
2
1
2
1
2
1
2
1
2
2 B 14 A26 A
2 IA1
1 2A
2E4
6 2D 1 2J
6 A
EA17
5 A
AD
F B F B12 IA1
8 IG1 10 IG1 7 IG1
21 IH1 9 IH1 10 IH1
17 B 8 B 28 C 30 C 28 D 9 D
10 E 9 E 3 E 2 E 1 E 6 E 5 E
3 1 3 1 3 1
G
3 4 2 1
4 2 2 4 2 4
F
E
D
C
O
N
M
Engine Control and Engine Immobiliser System
L
K
I
F
G
L–W
B–O
B–Y
B–O
B–W
W
R–L
G–Y
R–W
B–R
B–R
W–R
W
W
R–L
G–Y
B–R
WW
R–W
B
W LG
P
B–O
B–Y
B–O
L–W
Y–G
W–G
R L V
R–W
L–R
B–R
B–R
B–R
B–R
B–R
B–R
B–R
R–W Y W R (*1 )
Y–B
(*1 )(*1 )
(*1 )
(*1 )BR W R
–WR
–W
B–R
BR
B–R
BR
W
R–L
+B
BR–Y
BR
B–R
B–R B–R B–R B–R
BR–Y
BR
(*1)
B–R
(*1)
R–W
BR
B–R
* 1 : Shielded
JUN
CTIO
N C
ON
NE
CTO
R
BA
J 1J 2
,
From Skid C
ontrol ECU
<16–9>
<17–6>
From C
enter AirbagSensor Assem
bly<18–3>
V 2
VSV (A
CIS )
V 4
VSV (E
VAP)
I 5INJEC
TOR
NO
. 1
I 6INJEC
TOR
NO
. 2
I 7INJEC
TOR
NO
. 3
I 8INJEC
TOR
NO
. 4
I 9INJEC
TOR
NO
. 5
T 2THROTTLE CONTROL MOTOR C
2C
AMS
HAFT TIM
ING
OIL C
ON
TRO
L VALV
E
SIL W FC +B +B2
HT
OX2B
OX
HT2B
HT
OX2A
OX
HT2A
HT
OX1A
OX
HT1A
IGSW BATT MREL +BM ACIS PRG #10 #20 #30 #40 #50 CL+ CL– M+ M– GE01 OCV+ OCV–
B–R
E1
15 C
1
2
B–W
+B
B–R
I10IN
JECTO
R N
O. 6
#60
B–R
E1+BE1
C
B
A
11 2G
PB–R
W
From Body ECU<10–9>
B–R
30 A
L–B
IMLD
HG–R
15 A
G–R
FPR
E 3 E 4, ENGINE CONTROL MODULEA B E 5, C E 7, E
To Security Indicator Light
[Com
b. Meter]<
11–3>
22 B
9 IA3
LGLG
WFSE
JLG
QB–R
17 BC2
2
1
1 IC1
10 B
TBP
PP
B–RB–R
B–R
V 8
VSV (P
ressureS
witching V
alve )
A
D
H17
HEATE
D O
XYGEN
SEN
SOR
(Bank 2 Sensor 2 )
H11
HEATE
D O
XYGEN
SEN
SOR
(Bank 2 Sensor 1 )
H 9
HEATE
D O
XYGEN
SEN
SOR
(Bank 1 Sensor 1 )
IH120B BR–Y
B(*1)
28 B 7 B
3 1
2 4
B–R
BR
H10
HEATE
D O
XYGEN
SEN
SOR
(Bank 1 Sensor 2 )
HT
OX1B
OX
HT1B
E1+B
5 EA2 9 EA2
W G–B
W G–B
(*1 )
EA Front side ofthe intakemanifold
BR
BR
B–RB–RB–R
B–R
BR
R–W
IH42
B–RA
B–R
B–R
B–R
B–R
B–R
B–R
E 6, D
DB–R
16 B
B
TACH
B
BB
(A/T )
BR–Y(M/T)
(A/T)
R–Y
22 C
1
2
Y–RB–R
V 3
VSV
(Canister C
losed Valve )
CCV
B–R
B–R
1
2
J16JU
NC
TION
CO
NN
ECTO
R
A
J 7JU
NC
TION
CO
NN
ECTO
RD
AD
(S/D)(W/G)
(W/G)(S/D)
J 3JU
NC
TION
CO
NN
EC
TOR
B
EB
2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
1112
109
2 IS
300
(C
ont’
d)
24C
34B
23C
25E
24E
33B
32B
7C
18B
29B
19B
30B
9B
21B
20B
1J1
32E
102B
1H4
2H9
2B9
7IA
119
IA1
18IA
1
23B
24B
31A
1D
2D
31E
E32
29E
7D
14D
A2
7E
2C
1C
4E
13C
27E
26E
EC
Left
fend
er a
pron
10EA
1
1
EA
From Igniter<1–3>
From Skid ControlECU<16–8><17–5>
To Skid ControlECU<16–8><17–5>
See MultiplexCommunicationSystem<10–3>
1
14
3
43
2
A A A A
11
1
2
23
12
34
21
51
2
A A A A A
MPX
2M
PX1
NE
OEN
G–
ENG
+TR
C–
D
TRC
+IG
FIG
T3
E
IGT2
IGT
VPA2
VPA
VTA
2VT
A
F
PSP
THW
G
E2
E03
E02
E01
MO
PS
EC
MO
LE1
G2
NE–
NE
KNK
2KN
K1
CO
DE
RXC
KTX
CT
* 1
: Shi
elde
d
E10ENGINE OILLEVEL SENSOR
E11ENGINE OIL PRESSURE SW
K 3KNOCK SENSOR 2
K 2KNOCK SENSOR 1
E 8ENGINE COOLANTTEMP. SENSOR
T 9
TRAN
SPO
ND
ER
KEY
AM
PLIF
IER
BR
W–B
W–B
W–B W–B
BR
W–B
W–B
GR
W–B
W–R
BR
L
G
LL
B–W
W
B
B–R
W–B
G–B
V
P–B
R–W R–W
R–W
CO
DE
RXC
K
G
P
L–B
W–G
R–Y
B–L
B–Y
B–R
GR–B
L–W
P–L
L–Y
( *1)
R–W BR B–R
En
gin
e C
on
tro
l a
nd
En
gin
e I
mm
ob
ilis
er
Sy
ste
m
L–Y
BRB
RBR
BR
BR( *1)
( *1)
( *1)
( *1)
BR
( *1)
( *1)
( *1)
( *1)
BR
BR
BR
BR
R
G–Y
W–R
L–Y
L–Y
V
VCV
TA1
VTA
2VC
VPA1
VPA2
GN
D
E2
+B
E2
TXC
T
ANT2
R–W
From
Cen
ter
Airb
ag S
enso
rA
ssem
bly
<18
–3>
ANT1 TR
ANSP
ON
DE
RK
EY C
OIL
EA
Fron
t sid
e of
the
inta
ke m
anifo
ld
A
BR
OIL TEMP.
OIL LEVEL
E 3
ENG
INE
CO
NTR
OL
MO
DU
LEA
E 4
, B
E 6
, D
A
J 4
JUN
CTI
ON
CO
NN
ECTO
R
11ATo Unlock Warning
SW<10–16> KSWB–Y
C 3CRANKSHAFTPOSITION SENSOR
C 1CAMSHAFTPOSITION SENSOR
12
21
W–B
( *1)
C
FromMulti–Display<25–3>
Fron
t sid
e of
the
inta
ke m
anifo
ldEB
Cen
ter s
ide
of th
ein
take
man
ifold
( *1)
( *1)
B
8EFrom FAN NO. 1, NO. 2
Relay and Diode(A/C)<23–4>L–B
FAN
2IA
3B–Y
1A
EO
M W–BW–B
3C
ME0
1 BRBR
E 7
, E
IDC
owl s
ide
pane
l LH
A
ECLe
ftfe
nder
apro
n
J 5JUNCTIONCONNECTOR
R–W
W–B
1G5
1A2
W–B
P 2POWER STEERING OILPRESSURE SENSOR
IC13
T 3THROTTLE POSITION SENSOR
A 9ACCEL POSITION SENSOR
25B
32 PT
NKL–W
L–Y
V 7VAPOR PRESSURE SENSOR
1
BR
4IC
15
IC1
EA2
3
BR
–Y
L–Y
L–W
4BSTP
12ASTA
16A
ACM
G
From Stop LightSW<6–4><26–4>
From Park/NeutralPosition SW(A/T)or Clutch Start SW(M/T)<1–2>
From A/C COMP Relay<24–2>
26C
EVG
27C VG
G–B
32C TH
AL–B
BR
B–R
A
15
43
2
G–W
B
L–W
GN
D
VOU
TV
CVC
CPT
NK
E2
E 65
, C
AA
CB
AA
EA3
10
M 1MASS AIR FLOW METER
JUNCTION CONNECTOR
BAJ 1 J 2,
3EA
3
6EA
32
EA3 P–L
L–W
35B
L–Y
VC
L–Y
L–Y
L–W
BR
BR
BR
3BTC
P–B
V
G–B
17IA
1
11B
W–L W–L(M/T) (M/T)
ToCombinationMeter<22–2>S
PD
DD
20A
F/PS
From CenterAirbag SensorAssembly<18–2>
D
L
J 3JUNCTIONCONNECTOR
BR
2002 LEX
US
IS 300 (E
WD
451U)
M
1 2 3 43 421
3 IS 300
1
20A ECU
–B1
120A ALT
40A AM1
11
1D2
1
2
3
4
1
7. 5A DR
L NO
. 1
1
15A H–LP R
LWR
15A H
–LP L LWR
2
ACC
IG1AM1 4
1
1 1 1
ECLeft fender apron
1 1O
2F11A4
1D1 2M6
2M3
2F3
2
22
5
2M4
* 1 : Front Fog Light SW
1G5
1A1
IDCowl sidepanel LH
ECLeftfenderapron
P ower Source Headlight
2
1 2
1 1 1 11
9 71
7
1
2 1
2 2 2 22
8
11
AA W–B
WW
R–L
R
B–L
R–Y R
W–B
R–W
L–Y
R–L
W–R
B–R
R–L
C 9
HIG
H BE
AM IN
DIC
ATO
RLIG
HT[C
OM
B. METER
]
4
40A M
AIN
10A H
–LP L UP
R
10A H–LP
R U
PR
7. 5A ECU
–B2
10A ECU
–IG
HE
AD LP R
ELAY
BATTERY
I12IGNITION SW
D 6DAYTIME RUNNINGLIGHT RELAY(Main)
C11COMBINATION SW
HI
DRL +BIG
OFF
TAIL
HEAD
LOW
HIGH
FLASH
ON
From FR FOGRelay<7–3>
Y
J 5JUNCTIONCONNECTOR
CHG–
From C
ombination
Meter<
22–5>
L–R
5
LIGH
TC
ON
TRO
LS
W
L–W
DIM
MER
SW
2
1
*1OFF
BFG LFG HL HF HU H T EL
30A D
RL N
O. 2
1
2
1
1
2
3
4
3 3
3 3
B
IH Cowl sidepanel RH
1
2
H 7
HE
ADLIG
HT LH
(High )
1
2
H 8
HE
ADLIG
HT R
H(H
igh )
1710
W–R
Y–R
PKB
To Parking Brake
SW
<22–4>
4
16
W–B
6
E
1
D 4DAYTIME RUNNINGLIGHT RESISTOR
R–L
L–Y
R–B
R
L–R
R–L
8
R–L
2F9
L–Y 1 32
R–L
R–L
2
H
R–L R–L
R–W
From Headlight BeamLevel Control ECU<8–2>
From Headlight CleanerSW<7–2>
A
A
J 6JU
NC
TION
CO
NN
EC
TOR
B–R
2F7
2B5
A
A
BR
BRW
–B
W–B
B
DIM
MER
RELA
Y
13
See Automatic LightControl System<11–2>
1
2 2
1
1 B 3 B 2 A
2 B 4 B 1 A 5 A
3A
2M1 2I3
J 7JU
NC
TION
CO
NN
ECTO
R
H 6
HEA
DLIG
HT C
ON
TRO
L ECU
RH
H 5
HEAD
LIGH
T CO
NTR
OL E
CU
LH
D 2
A
DAYTIM
E RU
NN
ING
LIGH
T RELAY N
O. 3
D 3
B
DAYTIM
E RU
NN
ING
LIGH
T RELAY N
O. 4
3
IND
R–B
R–B
R
R–W
R–W
R–B
R–L
R–Y
R
R–W
W–B
W–B
W–B
W–B
W–B
R–L
R–W
R–L
R–W
W–BW–B W–B
2
RR
R–L
R–L
To HeadlightCleanerControl Relay<7–2>
1G
D 8DIODE(Headlight Cleaner)
R–L1F
1FL–Y
4
13
2F2
1 2
D21DIODE(Fog Light)
R–L R–Y
R–Y
R–Y
To Rear
Fog LightS
W<
7–4>
To TheftD
eterrentE
CU
<11–4>
2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
81H
Cow
l sid
epa
nel R
HIH
34
21
4 IS
300
1
B
15A
TUR
N–H
AZ12
0AA
LT
1
IG
1
LR
1D2
40A
AM
1
1O1
10A
GA
UG
E
E
2
ACC
IG1
AM1
4
1D1
1K1
1A10
1L3
1A7
1A8
23
1
1K7
2A2
1E6
1I8
1E4
1I10
1K2
12
12
1823
56
12
12
56
EC
Left
fend
erap
ron
BL
Left
quar
ter
pane
l LH
Po
we
r S
ou
rce
Tu
rn S
ign
al
an
d H
az
ard
Wa
rnin
g L
igh
t
L–R
W
W
W
B–L
W
W
G–W
G–W
P–G
G–Y
W–B
G–B
G–Y
W–B
W–B
W–B
W–B
G–B
G–Y
G–Y
G–B
G–B W–B
W–B
BATT
ER
Y
I12
IGN
ITIO
N S
W
C 9
TUR
N S
IGN
AL
IND
ICAT
OR
LIG
HT
[CO
MB
. M
ETE
R]
R 7REAR TURN SIGNAL LIGHT RH[REAR COMB. LIGHT RH]
R 5REAR TURN SIGNAL LIGHT LH[REAR COMB. LIGHT LH]
F 7FRONT SIDE TURNSIGNAL LIGHT LH
F 8FRONT SIDE TURNSIGNAL LIGHT RH
FLSH
REL
AY
A
12
1
2
48
56
A
211
7
G–Y
2
To Body ECU<10–9> H
AZ
LH RH
TLTR
TB
ELE
R
LHR
H
1G5
IDC
owl s
ide
pane
l LH
LL 3
2H11
2A6
G–Y
W–B
F10FRONT TURNSIGNAL LIGHT RH
F 9FRONT TURNSIGNAL LIGHT LH
W–B
AJ1
5JU
NC
TIO
NC
ON
NEC
TOR
EC
Left
fend
erap
ron
AJ
5JU
NC
TIO
NC
ON
NEC
TOR
W–B
C11
TUR
N S
IGN
AL
SW[C
OM
B. S
W]
1B
18A 2I
1
2B5
IHC
owl s
ide
pane
l RH
HA
ZD
GN
DG–W W–B W–BW–B
HAZARD SW[A/C CONTROL ASSEMBLY]
BAA12 A13,
1A2
BR
W–B
2F7
AA
BR
BR
J 7
JUN
CTI
ON
CO
NN
EC
TOR
W–B
W–B W–B
2002 LEX
US
IS 300 (E
WD
451U)
M
1 2 3 43 421
5 IS 300
1
2
120AALT
1
1O1
1
2
3
5
1F2
7. 5APANEL
1E5 1F5
6
3
2
3
6
1
4
1
4
1
2
1
1
2
14
15
1
2
10
2F7
2B5
IHCowl sidepanel RH
Power Source Illumination
1
A A A A A A A A
A A A A A A A
G
WB–L
GG G G G G G G GG
W–G
W–G
W–G
W–G
W–G
W–G
W–G
W–G
W–G
BRBR
W–B
W–G
T 8A/T SH
IFT POS
ITION
ILLUM
INATIO
N[TR
ANSM
ISSIO
N C
ON
TRO
L SW(L–2 )]
H16
HEA
DLIG
HT C
LEAN
ER
SW
E12ELEC
TRO
NIC
ALLY CO
NTR
OLLE
DTR
AN
SMISSIO
N PATTE
RN
SELEC
T SW
S 3SEAT H
EATER
SW(D
river’s S
eat )
S 4
SEAT H
EATER
SW(Front Passenger’
s Seat )
A27AS
HTR
AY ILLU
MIN
ATIO
N
C 8
CIG
AR
ETTE LIG
HTE
R ILLU
MIN
ATION
A12A/C
CO
NTR
OL ASSE
MB
LY
G 3
GLO
VE BO
X LIGH
T
TAIL RELA
Y
See Taillight and
Stop Light S
ystem<
6–1><
26–1>
J 9JUNCTIONCONNECTOR
J 8JUNCTIONCONNECTOR
BATTERY
22
AAAAA
1R 4
RH
EOSTA
T
3 2
W–G
BR
G
W–G
G
G G G
A
A
A
G
A
12
2R 2
RAD
IO AN
D P
LAYER
C 9
CO
MBIN
ATIO
N M
ETER
ILLUM
INATIO
N[C
OM
B. METER
]
J 7JU
NC
TION
CO
NN
ECTO
R
E ILL–
T
A
8
2
GW
–G
R14
REAR
FOG
LIGH
T SW
G
6 B
3 A
2 A
1 B
T 7A
TRAC
OFF S
W
(A/T)
(M/T)
(A/T)
(M/T)
G
BR
A
R15
REM
OTE
CO
NTR
OLLER
(Navigation )
A
W–G
G
2
5
A
M 4
MU
LTI–DIS
PLAY
A
W–G
G
13
2
A
TRAC
OFF S
W AN
D SN
OW
SW
T14B
G
(A/T )
(A/T )(A
/T )
(A/T )
2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
34
21
6 IS
300
TAIL
REL
AY
11
21
53
10A
TAIL
11O
1F2
1H13
121K
2 1
2 1
2B1
2H6
GG
ECLe
ft fe
nder
apro
nIH
Cow
l sid
epa
nel R
H
61K
2
ACC
IG1
2
AM1
4
1D1D
11I
61E
2
17A
6B
5IB
1
91K
1K3
1F7
71G
To Engine ControlModule<2–12>
To Shift LockControl ECU<21–4>
1I12
1F3
AF
G–W
G–W
12
12
2BF
1
1BF
1
BL513
523
12
21
DB B
BBA 1G
6
1I11
1I3
54
54
BLLe
ft qu
arte
rpa
nel L
H
2
2
120A ALT
AA
1
119
21
2
1
1 34
87
GN
DT–
ST–
HS
–
L–R
W
WR
–LG
–R
W–B
W–B
AA
T+IL
IGS
T+
B–LW
G–B
G–B
V–G
R–L
G–R
W–B
W–B
W–B W–B
W–B
G
G–W
G–B
G–W
G–Y
G–Y
G
G–W
G–Y
W–B
W–B
W–B
R–B
R–B
R–BR–BR–L
R–L
G–W
W–B
W–B
G–R
L–R
R–LG–R
G–W
L 3
LIG
HT
FAIL
UR
E S
ENS
OR
F 4FRONT PARKING LIGHT RH
F 3FRONT PARKING LIGHT LH
L 1LICENSE PLATELIGHT LH
L 2LICENSE PLATELIGHT RH
N 3NOISE FILTER(Stop Light)
H19HIGH MOUNTEDSTOP LIGHT
R 5BACK–UP LIGHT LH[REAR COMB. LIGHT LH]
R 7BACK–UP LIGHT RH[REAR COMB. LIGHT RH]
Po
we
r S
ou
rce
Ta
illig
ht
an
d S
top
Lig
ht(
S/D
)B
ac
k–
Up
Lig
ht
STOP
J 1
J 2
,
JUN
CTI
ON
CO
NN
ECTO
R
AB
J 1
J 2
,
JUN
CTI
ON
CO
NN
ECTO
R
AB
G–B
40A AM1
To S
kid
Con
trol E
CU
<16
–8>
<17
–5>
15A STOP
10A GAUGE
BATTERY
A
V–G
R–L
G–B
S 8
STO
P LI
GH
T SW STOP
I12
IGN
ITIO
N S
W
1I9 2
BE1
1BE
1G–B W–B
REAR LIGHTSWARNING LIGHT[COMB. METER]
BAC 9 C10,
To Theft DeterrentECU<11–4>
R–W
2B6
2 1
G
F 6FRONT SIDE MARKERLIGHT RH
2 1
W–B
F 5FRONT SIDE MARKERLIGHT LH
W–B
2B5
2B3
W–B W–B
BB
BB
B
SIDEMARKER
TAIL
1
GTAIL
324
G
G–W
W–B
STOP
TAIL
324
G
G–W
W–B
STOP
TAIL
W–B
W–BW–B
G–B
G–B
W–B
W–B
W–B
AA
AB
A
A
AB
B B B
AA
J14
JUN
CTI
ON
CO
NN
EC
TOR
G G
G
J14JUNCTIONCONNECTOR
G
G–W G–B
G–B
G–W
G–W
G–WG
A
RH
LH
2B
( M/T
)
3A
( A/T
)
2A
( A/T
)
1B
( M/T
)
BACK–UP LIGHT SW[PARK/NEUTRAL POSITION SW]
AP 1
BACK–UP LIGHT SW
BB 9
1F8
To Navigation ECU<25–2>
R–B
1 2
J15
JUN
CTI
ON
CO
NN
ECTO
R
W–B
W–B
A
G–Y
G–Y
H19HIGH MOUNTEDSTOP LIGHT
( *1)
(*1)
(*2) (*2)
(*1)
* 1
: LED
Typ
e*
2 : B
ulb
Type
J13JUNCTIONCONNECTOR
R 7
REA
R C
OM
BIN
ATIO
NLI
GH
T R
H
R 8
REA
RC
OM
BIN
ATIO
NLI
GH
T R
H
R 6
REA
RC
OM
BIN
ATIO
NLI
GH
T LH
Left
quar
ter
pane
l LH
J15
JUN
CTI
ON
CO
NN
ECTO
R
R 5
REA
RC
OM
BIN
ATIO
NLI
GH
T LH
2002 LEX
US
IS 300 (E
WD
451U)
M
1 2 3 4
Left fenderapron
EC
3 421
7 IS 300
4
3
2
1
1
HE
AD LP
RE
LAY
1
1 1
1
1
15AFR
FOG
1 2C
1
22
2F8
2
1
5
3
2B7 2B2
BATTERY
B–L
FR FOGRELAY
F 2FR
ON
T FOG
LIGH
T RH
F 1FR
ON
T FOG
LIGH
T LH
2A9
1
2
1
2
IH
Power Source
R–Y
W
R–Y
R–Y
W–B
F ront Fog Light
15AH
–LP L LW
R
To Com
bination SW<
3–4>L–W
1
2
1
2A5
2B5
W–B
W–B
R
R
See Headlight S
ystem<
3–1>
1
2
1
1
1D2
1O1
2
ACC
IG1AM1 4
2
1
40AAM1
WW
W
I12IGNITION SW
15AW
ASHER
1D1
1G11
H 3HEADLIGHT CLEANERCONTROL RELAY
4
1
EC Left fenderapron
1 2 4
5
W–R
L–RL–R
R–W
W–B
W–B
E
IG PB H
H16
HE
ADLIG
HT
CLEAN
ER
SW
6 IA1
W–G
To Diode(Headlight Cleaner)<3–3>
Headlight C leaner
L–R
1
2M6
2F1
40A MAIN
30A H
–LP C
LN
20A ECU
–B1
120A ALT
1
2
7. 5A ECU
–B2
BW
–R
W–G
2
1
M
H 4
HE
ADLIG
HT
CLEAN
ER M
OTO
R
From H
EAD
LP Relay
<3–1>
From W
asherM
otor<9–3>
3 6
HDLO FRWA
R–L
L–Y
Rear Fog Light
Cowl sidepanel RH
BN Right sideof the backpanel lower
EC Leftfenderapron
ID Cowlsidepanel LH
BL Leftquarterpanel LH
AA
3
1
3
1
D
D
1G5
1L9
4 IB1
G–O
G–O
BJ25
BK16
W–B
W–B
W–B
W–B
W–B
G–O
1 7
L E
G–O
W–B
B
See Illumination
System<
5–1>
From D
iode (Fog Light )<
3–4>R
–Y
W–R
23 5
LHILL+
R14REAR FOG LIGHT SW
D
(S/D
)
G–O G–O
G–O
(W/G) (W/G)
(W/G)
J12 (S/D
)J18 (W
/G)
JUN
CTIO
NC
ON
NE
CTO
R
R 6
RE
AR FO
G LIG
HT LH
[RE
AR C
OM
B. LIGH
T LH]
R 8
REAR
FOG
LIGH
T RH
[REA
R C
OM
B. LIG
HT R
H]
J15JU
NC
TION
CO
NN
ECTO
R
J 5JU
NC
TION
CO
NN
ECTO
R
A
W–B
L
(S/D)
(S/D)
(S/D)
W–B
(W/G
)
W–B
(W/G
)
2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
8 IS
300
40A
AM
1
1O1
1D2
2
ACC
IG1
AM1
4
1D1
10A
GA
UG
E10
AEC
U–I
G
1E2
1A11
H 1
HEA
DLI
GH
T BE
AM
LE
VEL
CO
NTR
OL
ACTU
ATO
R L
H
H 2
HE
ADLI
GH
T BE
AM L
EVE
LC
ON
TRO
L AC
TUAT
OR
RH
H18
HE
IGH
T C
ON
TRO
L S
ENSO
RR
EAR
LH
H15
HEA
DLI
GH
T BE
AM
LEV
EL C
ON
TRO
L EC
U
B–R
L–R
L–Y
L
Y
L–W
B–R
R–B
R–Y
R
R–GR–G
R
R–Y
R–B
B–R
L–W
Y
L
L–Y
B–R
R–L
W–R
G–B
G–O
G–W
R
Y
B
R–W
W
B–R
114
1216
313
415
2
54
16
35
41
63
75
118
9
MR
CO
M( B
1)R
H1(
S1)
RH
2(S
2)R
H3(
S3)
RH
4(S
4)LH
4(S4
)LH
3(S3
)LH
2(S
2)LH
1(S
1)M
LCO
M( B
1)
SH
BSH
RL
SHG
12
3
BAT
TER
Y
I12
IGN
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N S
W
To Combination SW<3–4>
From Skid Control ECU<16–8><17–5>
Po
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He
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ligh
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ea
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Co
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2SP
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SBR
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R
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TLH
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HT
RH
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H+
RH
–
120A
ALT
11
2 1
B–LW
2 1
18 WN
G
B–R
R–L
B–R
1H3
2I10
2H10
B–R
5IA
33
IA3
4IA
313
IA3
13IG
12
IG1
6IG
11
IG1
5IG
1
IHC
owl s
ide
pane
l RH
H12
HEI
GH
T C
ON
TRO
L SE
NS
OR
FRO
NT
LH
B–O
W–L
B–L
B–O
W–L
B–L
617
10
SH
BSH
FLS
HG
21
3
SBF
SHFL
SG
F
3B
D1
2BD
11
BD1
8IB
19
IB1
20IB
114
IA3
15IA
316
IA3
G–B
G–O
G–W
7 2A
C 9HEADLIGHT BEAMLEVEL CONTROLWARNING LIGHT[COMB. METER]
17 11
AA 2F7
2B520
J 7
JUN
CTI
ON
CO
NN
ECTO
R
BR BR W–B
2002 LEX
US
IS 300 (E
WD
451U)
M
1 2 3 4
A
8 2
1F9 5
1G
+1
WF
OFF
7
3 421
9 IS 300
HornFront Wiper and WasherPower Source
2
ACC
IG1AM1 4
1D2
40A AM1
1O1
11
1
1
2
15AWASHER
25AWIPER
1D1
1G4 1F6 1G8
IA11
IA18
IA120
ID
17
L–B
16
G–B
11
2
1
3
5
2 2
2 2
6
1
G W
G W
L
L–R
L–R
G
1
2
B–L
21
12
L–Y 1 4 5 3
L–B
L–R
L–W
L–B
W–B
L–W
L
G
2
G–W
G–W G–B
G
G–B
I12IGNITION SW
BATTERY
W 1
WASH
ER
MO
TOR
10A HO
RN
120A ALT
F11FRONT WIPER MOTOR
HORNRELAY
H14HORNRH
H13HORNLH
1
Cowl sidepanel LH
+1 EWMISTB1INT2INT1+S+2+B
OFF
MIST
INT
MIST
LO
MIST
HI
MIST
WASHER
WIPER RELAY
M
A
L–R
L–R
L–W
C13FRONT WIPER AND WASHER SW[COMB. SW]
EC Left fenderapron
W–B
W–BJ 5JUNCTIONCONNECTOR
W–B
W–B
L
L
L
+2 E S
B
2M5
2G7 2I11
C12
HO
RN
SW
[CO
MB. SW
]
To T
heft Deterrent
EC
U<
11–4>
G–W
OFF
INT
LO
HI
WASHER
L–RTo A/C ControlAssembly<24–6>
9 IA1
To Headlight
Cleaner
Control
Relay<7–3>
L–Y
L–YL–Y
M
2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
34
21
( Con
t. n
ext
page
)
1
120A
ALT
20A
ECU
–B1
1
MP
X+
11
BAT
TER
Y
2M6
7. 5
AD
OM
E
2H7
2K7
2H5
10A MPX–B
1D2
1O1
21
53
7. 5A PANEL
1F52
B
1F2
21
53
52G
42H
2C1
2G4
2L4
2K6
3ID
2
10A
GAU
GE
2
AC
C
IG1
AM
1
3 4
41B
1H11
10A
RA
DIO
NO
. 2
1D6
10A ECU–IG
1G1 1
IA3
1A
10B
5A
5B
IH
GF
ED
CB
A
Po
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rce
Mu
ltip
lex
Co
mm
un
ica
tio
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tem
B–L
L–B G L
L–W
L–Y
L–R
R–Y L–Y
B
L–R
WW
R
O
O
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L
L
L
P–G
W
L–B
G
W
W
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L–BR–L
B–L
L–Y
B–L
L–Y
R–Y
L–R
L–Y
L–W
L
L–R
R–L
20A D FR P/W
20A DOOR
40A AM1
20A D RR P/W
20A P RR P/W
20A P FR P/W
BSU
BTA
ILA
CC
IGM
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14
73
1
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2
20S
ee T
aillig
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top
Ligh
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tem
<6–
1><
26–1
>
C 9COMBINATION METER
TAIL RELAY
P/W RELAY
I12
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N S
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BAA12 A13,
BA
BO
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5
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12
G
2120
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7 8
T 6THEFT DETERRENT ECU
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10
IS 3
00
21IH1
6 B 8BUCKLE SW RH ANDSEAT BELT WARNINGOCCUPANT DETECTION SENSOR
3
4BH
1 P–GP–G
P–G(*2)
P–BFrom Center AirbagSensor Assembly<18–3><18–4>
BKFr
ont f
loor
pane
l RH
2BH
1W–B(*1)
W–B(*1)
W–B(*2)
IG
16A
2H10
2I5
1H3
B–R
B–R
* 2
: w/o
Pow
er S
eat
* 1
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Sea
t
1B11
1I7
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(*1) (*1)
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6
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From
RR
DEF
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ayor
DEI
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Rel
ay<
21–2
>5A
14A
FEFR
See Combination Meter System<22–3>
13
2002 LEX
US
IS 300 (E
WD
451U)
M
7 865
(Cont. next page)10 IS 300 (Cont’ d)
IH
GF
ED
CB
A
2
1
4 BG1
2 BG1
A3 11 B
2 ID2
2
1
2
1
8 1L 1N7
1L11B1
1N51H6
Front floorpanel LH
BJ
B18 17 B
2 II1 II13
M21 1 2
M
12 BB1BB111
B34 B
L–YR–YL–RL–YL–W
LG
L–BB–L
BA17BA16BB17BB16
IH154 IH1
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11 BA1 BA112
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M ultiplex Communication System
DBKL DCLP ILE PD PU RRD RRU RLD RLU
PCT D U E PCT D U E PCT
L–WL–YL–RR–Y
SD SU SD SU SD SU
2 2
1
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3 4 2 5 3 4
1 1
2
1 6 1 6 1 6
R–G
R–G
L–Y
R–W
L–Y W
W–B
W–B (*1 )
L–Y
W
L–Y
L–W
Y–B
G–Y
R–Y
G–B
R
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Y–B G
R–W
G–B
R
L G R
W–B
L–W G R
W–B
L–Y
W–B
W–B
L–Y
W–B
L–W
W W
V 5VA
NITY LIG
HT LH
V 6VA
NITY LIG
HT R
H
I13IN
TERIO
R LIG
HT
B 7BU
CKLE SW
LH
P 6POWER WINDOWCONTROL SWFRONT RH
P 8POWER WINDOWCONTROL SWREAR RH
P 7POWER WINDOWCONTROL SWREAR LH
P11POWER WINDOWMOTOR FRONT RH
P13POWER WINDOWMOTOR REAR RH
BA
BODY ECU
, B 6B 5
3
E
I11IG
NITIO
N KE
YC
YLIND
ER
LIGH
T
D10
DO
OR
CO
UR
TESY
LIGH
T FRO
NT
LH
* 4 : w/o Moon Roof* 3 : w/ Moon Roof* 2 : w/o Power Seat* 1 : w/ Power Seat
DO
OR
OFFO
N
W
1L5
21 IB1
L–Y
C
C
J13JU
NC
TION
CO
NN
EC
TOR
From C
enter Airbag
Sensor Assembly
<18–3>
C
P–B
(*1 )
P–B(*2 )
P–B(*1 )
P–B
P–B
4
1
W–B
M 3
PERSO
NAL LIG
HT
[MO
ON
RO
OF C
ON
TRO
L SW
] (*3 )
W(*4 )
1
2
P 5PE
RSO
NA
L LIGH
T
E
C
R–W
F
F
W 4
WIR
E TOFFC
HO
LDER
1N2
A
A
L–Y
W(*4) (*3 )
W 4WIRE TOFFC HOLDER
A A
H
H H
W 4WIRE TOFFC HOLDER
W(*4)
H
(S/D)
W–B
(W/G
)
(S/D)
IJ11
(*1 )
A
W
M12
D U
2 5G R
P12POWER WINDOWMOTOR REAR LH
H
W–B W–B W–B
W–B
W–B
W–B
(W/G
*2 )
(S/D *2 )
(W/G
*2 )
W–B
L–YLG
L–BB–L
L–Y
W–B(S/D *2)
W–B(S/D)W–B
W–B(S/D)W–B(W/G)
L–RR–YL–YG
L–BB–L
W–B(W/G)
W–B (W
/G)
W–B(S/D *2)
2002 LEX
US
IS 300 (E
WD
451U)
M O
VE
RA
LL ELE
CT
RIC
AL W
IRIN
G D
IAG
RA
M
11 12109
(Cont. next page)10 IS 300 (Cont’ d)
KJ
I
DE
G
C
F
B
1B51H7
M
D
M
W–B
Cowl sidepanel LH
ID
M
M M
1B101B81N6 1B9 1H10 1H9 1I1 1I5
2L2 2L1 2K1 2K2
2H12H2
3 BB1 4 BB1 BB18
3 BA1 4 BA1
8 BA1
14 BC2
4 A
9 BB1
9 BA1
BLLeft quarterpanel LH
DE
F
HI
A
M ultiplex Commun ication System
R–G
W–B
BECU BCTY MPX3 ACT+ ACT–
BDM DCTY TX
PW PWR PWL D U LMT PLS SGND KL KUL LSWD
4 1 2 20 8 13 12 11 6 15 10
2
2 11 6 9 10
5 16 18
2 1 4 3 5 4 3 1 5 6
P 9POWER WINDOW MASTER SW
P10POWER WINDOW MOTOR FRONT LH
D20DOOR LOCK MOTOR, DOOR KEY LOCK ANDUNLOCK SW ANDDOOR LOCK DETECTION SWFRONT LH
To Moon RoofControl ECU<12–2>
R–Y
R–Y
B–L
L–B
L–R
G R
W–G
W
BR–W
G–R
G–B
L–B
R–G
Y–R
W–B
G–Y
R–W
L–R
LSR
1 2
B
4 1 2 4 3 4 1
C
A
3 3 2
C C
G–Y
R–W
L–R
G–Y
R–W
G–Y
R–W
L–RL–R
L–RL
W–B
W–B
W–B
W–B
D19DOOR LOCK MOTORAND DOOR LOCK DETECTION SWREAR RH
D17DOOR LOCK MOTORAND DOOR LOCK DETECTION SWFRONT RH
D18DOOR LOCK MOTORAND DOOR LOCK DETECTION SWREAR LH
B 5 B 6, BODY ECUA B
LIMIT S
W
PU
LSES
ENSO
R
LOC
K
UN
LOC
K
LOC
KD
ETEC
TION
LOC
KD
ETEC
TION
LOC
KD
ETEC
TION
LOC
KD
ETEC
TION
J16JUNCTIONCONNECTOR
L–R
L–R
G–Y
R–W
G–Y
R–W
W–B
D
J11JUNCTIONCONNECTOR
1L10
5 1G
EC Left fenderapron
W–BBA
AJ 5JUNCTIONCONNECTOR
G–Y
R–W
13 BC2
L–R
W–B(S/D)
2 1B1B7
GND
12
W–B
7 1L
E
9
W–B
W–B
G
1A2
C
W–B
W–B
J16JU
NC
TION
CO
NN
ECTO
R14 B
LSWP
5 II1
L–R
4 ID2
R–W
L–R
20
ACTD
B
B
BKFront floorpanel RH
W–B
A
H
W–B(W/G)
J15JUNCTIONCONNECTOR
A
B
W–B(W/G) W–B(W/G)
(S/D
)
(S/D)
W–B
(W/G
)
A
W–B(W/G)
B16
1
L–Y
B15
L–O
2
K 1
KEYLE
SS BU
ZZER
13 IA1 5 IA1
L–Y
L–O
L–O
L–O
BU
ZZER
BZR2 BZR
10 B B1
HAZ OBD2
G–W
W
From FLSH
Relay
<4–3>
To Data Link C
onnector 3<
2–5>
B–LL–BG
L–YR–YL–R
W–B(W/G)W–B(S/D)
W–BW–B(S/D)
W–B(S/D)
GL–Y
W–B
W–B(S/D)W–B
W–B(S/D)W–B
GL–YW–B
W–B(W/G)W–B
W–B(W/G)
W–B
W–B
W–B(W/G)
2002 LEX
US
IS 300 (E
WD
451U)
M
1613 1514
10 IS 300 (Cont’ d)
HI
A1 A2
2
1
8 A 7 A 19 B
2F7
2K54 2K 2B5
1
2
6 B
1 1 1 1
8 IH1
8 B 6 A 5 A
M ultiplex Commun ication System
L–Y
PRG RDA TR+ LGCY GND2 KSW PCTY DCTY RCTY
E +B
PRG RDA
3
AA
D
1
B
C C
A
R–B
L–W
R–Y
RL–Y
L–Y
W–B
W–B
W–B
W–B
W–B
W–B
B–YB
–Y
R–B
R–G
R–L
R–B
R–G
R–L
R–L
W 3
WIR
ELESS D
OO
R LO
CK
CO
NTR
OL R
EC
EIVER
J12(S/D)J17(W/G)JUNCTIONCONNECTOR
J12(S/D)J17(W/G)JUNCTIONCONNECTOR
L 7LU
GG
AG
E CO
MPAR
TMEN
TLIG
HT
D13
DO
OR
CO
UR
TESY SW
FRO
NT R
H
D12
DO
OR
CO
UR
TESY SW
FRO
NT LH
D15
DO
OR
CO
UR
TESY SW
REA
R R
H
D14
DO
OR
CO
UR
TESY SW
REA
R LH
U 1
UN
LOC
K W
ARN
ING
SW
From E
ngine Control
Module<
2–12>
J12 (S/D)
J17 (W/G
)JU
NC
TION
CO
NN
ECTO
R
B 5 B 6,
BODY ECU
A B
IH
B–Y
W–B
UN
LOC
K
LOC
K
3
6 5
9 B
PMUL
G–B
7 B
PML
G–R
17 II1 18 II1
19 II1
G–B
G–R
BRBR
BR
A
A
J 7JU
NC
TION
CO
NN
ECTO
R
D16
DO
OR
LOC
KC
ON
TRO
L SW R
H
1
2
D 9
DIO
DE (Luggage
Com
partment Light )
From Theft D
eterrent ECU
<11–3>B
–YB B B
B
J 6JUNCTIONCONNECTOR
15 BC2
R–L
3 BC2 11 BC2
R–B
GR
–LG
R–L
R–B
(S/D)
GR
–L(S/D
)
(W/G
)
(W/G
)
(W/G
)
(W/G
)
BC22
13 B
BDSU
2 IB1
6 BJ2
7 BK1
BNRight side of theback panel lower
Cowl sidepanel RH
W–B
(W/G
)B–R
(W/G
)B
–R(W
/G)
B(W
/G)
1
2
B(W
/G)
B13BAC
K DO
OR
OPE
NER
SW
W–B
(W/G
)
3 B 1 B (W/G)
4 B 2 B (W/G)
1 A 2 A (S/D)
W–B
W–B
(W/G
)
(W/G
)
(S/D)
L–Y(W/G)
W–B
L–Y(W/G)
L–Y (S/D)
W–B(W/G) (W/G)
1 B 3 B (W/G)
4 A (S/D)1 A
2 A (S/D)3 A
5 B 4 B (W/G)2 B
R–Y
G–Y
LUG
GA
GE C
OM
PARTM
EN
TD
OO
R O
PEN
ER
RELAY
AL 6
FG
DE
CB
A
LUG
GA
GE C
OM
PARTM
EN
TD
OO
R C
OU
RTES
Y SW AN
D O
PEN
ER M
OTO
R
AL 4
B11B
BAC
K DO
OR
CO
UR
TESY SW
AND
OPEN
ER M
OTO
R
BACK D
OO
R O
PEN
ER R
ELAY
BB12
W–B
L–Y (W/G
)
W–B
(S/D)
W–B (W
/G)
W–BW–B(W/G)
W–BL–YG
W–BW–B(S/D)
W–BW–B(S/D)
2
5
G W–B
(W/G
)
M
(S/D
)
B
B
R–Y
(S/D)
D D
C(W/G)(S/D)
(W/G)(S/D)
2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
34
21
11
IS 3
00 1
L–R
120A
ALT
20A
EC
U–B
1
11
1D2
1O1
10A
ECU
–IG
2
ACC
IG1
AM1
41D
12M
6
1A4
10A
19A
B7
8B
1A
2A
4B
9A
20A
21A
5IE
14
IE1
3IE
1
13A
12A
14A
OFF
T
HEA
D
TAIL
AUTO
HA
EL
B12
18A
8B
4A
A5
12IA
311
IB1
21
12
ECLe
ftfe
nder
apro
n
BLLe
ft qu
arte
rpa
nel L
H
22A 1A
2
1G5
1A1
IDC
owl s
ide
pane
l LH
ECLe
ft fe
nder
apro
n
B–L
W
B
B–Y
R–Y
R–W
G–W
R
Y
BR
R
Y
BR
R
R–Y
G–Y
L–B
L
B–W
W–B
L–B
L
B–W
W–B
W–B
W–B
21
2
14
3
A
12
1
CLT
BC
LTS
CLT
ET
HA
IND
DSW
HLU
GE
IGK
SWM
PX1
MP
X2H
EAD
TAIL
HO
RN
Po
we
r S
ou
rce
Th
eft
De
terr
en
t
T 5
T 6
,
THEF
T D
ETER
REN
T E
CU
AB
CLT
B
See MultiplexCommunicationSystem<10–4>
CLT
SC
LTE
From Engine Control Module<2–6>
BATT
ER
Y
A28
AU
TOM
ATI
C L
IGH
TC
ON
TRO
L S
ENSO
R
I12
IGN
ITIO
N S
W
, C10C 9 A B
SECURITY INDICATORLIGHT[COMB. METER]
To Unlock WarningSW<10–16>
J15
JUN
CTI
ON
CO
NN
ECTO
R
From Diode (Fog Light)<3–4>
From TAIL Relay<26–1>
From HORN Relay<9–4>
E 9ENGINE HOODCOURTESY SW
L 5LUGGAGECOMPARTMENT DOORKEY UNLOCK SW
LIGHT CONTROL SW
Au
tom
ati
c L
igh
t C
on
tro
l a
nd
Lig
ht
Au
to T
urn
Off
2F4 11
A
W–R
+B1
7. 5
AEC
U–B
2
AA
L–R
B–R
B–R
J 6
JUN
CTI
ON
CO
NN
ECTO
R
B
3B SH
G
G
1413
12
C11
CO
MBI
NA
TIO
N S
WW
–B16
AA
J 5
JUN
CTI
ON
CO
NN
ECTO
R
W–B
2E2
2A10
2B
11IA
1G–Y G–Y
SH–
1
T 1THEFT DETERRENT HORN
W
W–B
2I4
2C1
1
40A AM1
15A DOOR DL
WG
W–B
3IG
3L–B
2F7
2B5
IHC
owl s
ide
pane
l RH
2A3
L–B W–BBRBR
AAJ
7JU
NC
TIO
NC
ON
NEC
TOR
6A
G–W
NA
V1From Multi–Display<25–3>
2002 LEX
US
IS 300 (E
WD
451U)
M
1 2 3 43 421
12 IS 300
1
IG
10ARADIONO. 2
120AALT
1
1D2
30A S/R
OO
F
1O1
1N8
+B
10AECU–IG
2
ACC
IG1AM1
3
4
1D1
1N3
BJ
1D6
1B12
9 ID2 ID210
M M
4 II1 13 II1
8 ID2
12 II1 MM
ID Cowlsidepanel LH
1G5
1L10
P ower S ource M oon Roof Remote Control M irror
2
2
4 3 10
5 2 6 3 4
1
C
MHLMVL
7
6
M+
8 7 6 8
1
1
MHR
5 6
MVR
1 2
M+
7 8
P–B
C
3 6 10
UP
2
CLOSE
9
OPEN
J11JU
NC
TION
CO
NN
ECTO
R
C
OPERATIONSW
SELECTSW
DOWN
B–L
E
W
W
4
W
W
B–R
R–G
R
R–W
HL
L–R
L–W
HR
W–B
W–B
VL
W–B
W–B
VR
W–B
M+
P–B
L–Y
B
P–B
GR
I12IGNITION SW
P–B
BATTERY
L–YDCTY
L
L–Y LL
P–G
P–B
P–G
P–L
W–B
W–B
P–L
W
R
L–R
R
P–B
W–B
UP DOWN CLOSE OPEN E1 GND
From BodyECU<10–10>
R13REMOTE CONTROL MIRROR SW
M 2MOON ROOFCONTROL ECU
M 3MOON ROOF CONTROL SW
1L7
1B7
W–B
J 5JUNCTIONCONNECTOR
J11JUNCTIONCONNECTOR
D
AA
D
R11REMOTE CONTROLMIRROR LH
EC Leftfenderapron
W–B
R12REMOTE CONTROLMIRROR RH
LEFTDOWN RIGHTDOWN/RIGHT
UP/LEFT
UP
LEFTRIGHTLEFTRIGHT
1 IJ1
Front floorpanel LH
1N4 1N1
1A3 1A6
17 ID212 ID2 8 II1 20 II1
B
B
H
H
B–R
B–RW
W W
W–R
G–R
G–R
W–R
G–R
W–R
W–R
WW
–B
B–R
W 4WIRE TOFFC HOLDER
1
IG
EC+ EC–
I14INNER MIRROR
2 3
C G
C G
W 4WIRE TOFFC HOLDER
W–R G
–RG
–R
W–R
G–R
4 5 4 5
EC+ EC– EC+ EC–
R11REMOTE CONTROLMIRROR LH
R12REMOTE CONTROLMIRROR RH
Automatic G lare–Res istantEC M irror
4
W–B
E40A AM1
2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
34
21 BAT
TER
Y
13
IS 3
00
1
2
11D2
11O1
L–R
Y–G
L L–R
Y–R
Y–G
2
ACC
IG1
AM1
4
MM
15A
SEAT
HTR
1D1
1L2
1L6
R–L
4IH
4
2B5
2F7
BJ
Fron
t flo
orpa
nel L
H
2
M
33
A
16
22
6
A
A
WL–
RL–
R
BR
B–LWW
M
BB–R
W–R
W–G
B
W–R
W–B
W–BBRBR
BR
R–L
B–W
B–W
Po
we
r S
ou
rce
Po
we
r S
ea
tS
ea
t H
ea
ter
P21
POW
ER S
EAT
MO
TOR
( Driv
er’
s Se
at S
lide
Con
trol)
P18
POW
ER S
EAT
MO
TOR
( Driv
er’
s Se
at F
ront
Ver
tical
Con
trol)
I12
IGN
ITIO
N S
W
10IB
3
3BG
1
R–G
R–G( *1)
( *1)
R–G(*2)
R–G
IHC
owl
side
pane
lR
H
BK
W–B
P19
POW
ER S
EAT
MO
TOR
( Driv
er’
s Se
at R
ear
Ver
tical
Con
trol)
P20
POW
ER S
EAT
MO
TOR
( Driv
er’
s Se
at R
eclin
ing
Con
trol)
1BG
1
REA
R
DO
WN
FRO
NT
FRO
NT
UP
UP
DO
WN
REA
R REARVERTICAL
FRONTVERTICAL SLIDERECLINING
(*2)
* 1
: w/ P
ower
Sea
t*
2 : w
/o P
ower
Sea
t
S 9SEAT HEATER(Driver’ s Seat)
S10SEAT HEATER(Front Passenger’ s Seat)
J 7JUNCTIONCONNECTOR
S 3SEAT HEATER SW(Driver’ s Seat)
S 4SEAT HEATER SW(Front Passenger’ s Seat)
Fron
tflo
orpa
nel
RH
2 3 8 7 5 10 6 9
P16POWER SEAT CONTROL SW (Driver’ s Seat)
W
1
1 1 2 2
2 2 1 1
2L–
R
Y–G
L L–R
Y–R
Y–G
P17POWER SEAT CONTROL SW (Front Passenger’ s Seat)
MMM
W
M
BB–R
W–R
W–G
B
W–R
P25
POW
ER
SEA
T M
OTO
R( F
ront
Pas
seng
er’
s Se
at S
lide
Con
trol)
P22
POW
ER
SEA
T M
OTO
R( F
ront
Pas
seng
er’
s Se
at F
ront
Ver
tical
Con
trol)
P23
POW
ER
SEA
T M
OTO
R( F
ront
Pas
seng
er’
s Se
at R
ear V
ertic
al C
ontro
l)
P24
POW
ER
SEA
T M
OTO
R( F
ront
Pas
seng
er’
s Se
at R
eclin
ing
Con
trol)
RE
AR
DO
WN
FRO
NT
FRO
NT
UP
UP
DO
WN
RE
AR
REARVERTICAL
FRONTVERTICAL SLIDERECLINING
3 7 8 10 5 6 9
1
1 2 1 1
2 1 2 2
44
W–B
( *1)
40A AM1 120A ALT
12G10
2M7
W
1BH
1
12IH
4 W
W
W
3BH
1
R–L
R–L( *1)
( *1)
(*2)
BG1
2
W–B
W–B
( *1)
W–B
( *1)
W–B
(*2)
BH1
2
( *1)
W–B
( *1)
W–B
( *1)
W–B
IG RE
ERIG
12
12
2
30A P/SEAT
1
7IB
3 2I9
W WW
2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
B–R
34
21
14
IS 3
00
120A
ALT
20A
AM
225
AEF
I
1
11O 1
1
I12
IGN
ITIO
N S
W
1
40A
AM
1
1D2
2
ACC
IG1
IG2
ST2
AM1
4 67
AM2
5 3
1 24
A
7. 5
AIG
N
2A8
2H13
13A
17A
2
EFI
REL
AY
2
22
21D
20D
23D
22D
32C
24C
B33
32B
25E
24E
35B
3B
12A
4B
6A
5A
19D
18D
11D
D10
35D
34D
27D
34B
4E
1A
B–Y
IHC
owl s
ide
pane
l RH
2B4
2B11
AW W–R
L–R
B–R
B–R
L–R
B–Y
B–O
W
W–R
B–Y
B–L
W–BW–B
B–R
B–Y
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2002 LEXUS IS 300 (EWD451U)
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12
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2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
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IS 300 (E
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910
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2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
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2002 LEX
US
IS 300 (E
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451U)
M
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<10–3>
A12
A/C
CO
NTR
OL
ASSEM
BLY
9 B
ENG+
18 B
ENG– NEO
C26 11 B
TRC+ TRC–
B20
8 IA3 18 IA3 10 IA1 7 IA3 17 IA3
To Engine Control
Module<
2–12>
From Engine C
ontrolM
odule<2–12>
L–B P G R–Y
W–G
L–B P G R–Y
W–G
10 B
TS
28 C
D/G
W–R
W–L
To Data Link
Connector 3
<2–4>
<2–5>
4 B
WT
LG
B
WAW
–L1
BR–W
Y–G
LG
L–Y
L–Y
SLIP
TRAC
OFF
A
ABS
BRA
KE
IND
9 B 4 BA12 3
A17
8
Y–G
BRL
19 A
B
6 A
B6 2
R–Y
SP1
B
BR–W
W–L
C 9 C10,
COMBINATION METER
A BR
–Y
IE Front floor panel center LH
(A/T )
(A/T )
Y
TRAC
OFF S
W AN
D SN
OW
SW
BT14
5 C 4 C
4 IA1 3 IA1
2
1
W–G
R–B
W–G
R–B
B10BRAKE PEDALLOAD SENSING SW
FSW+ FSW–
2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
W–B
34
21
1
18
IS 3
00 BATT
ER
Y
AM2
63
AM1
ST2
IG2
IG1
ACC
72
2G3
1D2
7. 5A SRS–B
2C1
1
120A ALT
1
40A AM1
1
20A AM2
2H13
1D6
7. 5A IGN
10A SRS–ACC
1J2
2J3
816
2G2
11 2A
22J
B–Y
To Data LinkConnector 3<2–9>
3B LA
6B
AC
C
5B IG2
19B TC
12B SIL
6C PR
–
5C PR
+
1A PL–
2A PL+
2C
SFR
–
1C
SFR
+
5A
SFL–
6A
SFL+
1
11BP–
10BP+
SPIR
ALC
ABLE
2
13BD–
14BD+
27BE1
10C
ESR
7C
SSR
–
9C
SSR
+
12C
VUPR
43
21
9AES
L
12A
SSL–
10A
SSL+
7A
VUP
L
43
21
20B–SR
9B+SR
12
26B–S
L
15B+S
L
12
28BE2
IDC
owl s
ide
pane
l LH
IHC
owl s
ide
pane
l RH
R B–R
B–R
LG–B
W–R
W
LG–B
W–R
W B–L
LG–B
R GR–L
B–O
B–YB–Y
B–Y
R–W
W
R–W
W
Y–B
Y
Y–B
Y Y–G
Y–R
Y–G
Y–R
Y–G
Y–R
Y
Y–B
W–B
GR
P
L–Y
LG
GR–L
P–L
L–W
LG
BR–W
B–W
BR
W–R
BR–W
B–W
BR
W–R
12
12
12
21
I12
IGN
ITIO
N S
W
A10
AIR
BAG
SEN
SO
RFR
ON
T LH
A11
AIR
BAG
SEN
SO
RFR
ON
T R
H
S11
SID
E A
IRB
AGSE
NSO
R L
H
S12
SID
E A
IRBA
GSE
NS
OR
RH
A25
AIR
BAG
SQ
UIB
( Ste
erin
g W
heel
Pad
)
A24
AIR
BAG
SQ
UIB
( Fro
nt P
asse
nger
Airb
ag A
ssem
bly)
S13
SID
E AI
RBA
GSQ
UIB
LH
S14
SID
E AI
RB
AGSQ
UIB
RH
P14
PRET
EN
SIO
NER
LH
P15
PRE
TEN
SIO
NER
RH
C 9SRS WARNING LIGHT[COMB. METER] C
4C
5,
CEN
TER
AIR
BAG
SEN
SOR
AS
SEM
BLY
ABS
RS
Po
we
r S
ou
rce
C,
C 6
To Data LinkConnector 3<2–5>
21
21
2
2 1
VU
PLSS
L+SS
L–ES
LVU
PR
SSR
+S
SR–
ESR
1
2L5
11O
W
2J4
2B5
W–B
W–B
1G5
1J3
BKFr
ont f
loor
pan
el R
H
5 1H
IG2
43
IG2
2IG
21
IG2
AA
ECLe
ft fe
nder
apro
n
J 5
JUN
CTI
ON
CO
NN
ECTO
RW
–B
5 1D
20IA
3
BB
J16JUNCTIONCONNECTOR
W–B W–B
P–B P–B
8C
RB
E+P–B P–B
11A
LBE+P–B P–BTo Buckle SW LH
<10–5>
6B
H1
To Buckle SW RH andSeat Belt WarningOccupant DetectionSensor<10–4>
(*2) (*2)
(*1)(*1)
* 2
: w/o
Pow
er S
eat
* 1
: w/ P
ower
Sea
t
To Data LinkConnector 3<2–4>
3C
ICR
–
4C
ICR
+
4A
ICL–
3A
ICL+Y–V
Y–L
Y–V
Y–L
12
12
C16
CU
RTA
IN S
HIE
LDA
IRBA
G S
QU
IB L
H
C17
CU
RTA
IN S
HIE
LDAI
RB
AG S
QU
IB R
H
23B
GSW
2
2IG
3L LTo EngineControlModule<2–12>
W–B(W/G)
(S/D) (S/D)
3IG
1
2002 LEX
US
IS 300 (E
WD
451U)
M
1 2 3 43 421
19 IS 300
1
120AALT
20AECU–B1
11
1D2
1 1O
15ACIGI12
IGNITION SW
6 1D
3
AM1 IG1
ACC
2
1E3 1A9
10ARADIONO. 2
BATTERY
1E7
1G5
ID
10AMPX–B
6 2M
2I6
2I1
2
7 8
1 2
2
A12CLOCK[A/C CONTROL ASSEMBLY]
1
C 7CIGARETTELIGHTER
2 1
1
18
R
B
C lock
WB
C igare tte Lighter and P ower O utlet
B–LW
Power Source
W–B
W–B
R–Y
B
ECLeft fenderapron
AA
J 5JUNCTIONCONNECTOR
W–B
OUTSIDE TEMP. GAUGE
ACC +B
GND
A
AJ10JUNCTIONCONNECTOR
GR
GR
2G6
2B5
IHCowl sidepanel RH
W–B
P 4POWEROUTLET
W–B
W–B
PP P
7. 5ADOME
2H7
1H6
1N5
BJ Front floorpanel LH
V 5G
AR
AGE D
OO
R O
PEN
ER[V
ANITY
LIGH
T LH]
+B
GND
L–YW
W–B
1
2
G arage Door Opener
1
2
1
2L10
1 2C
GR
(W/G
)
15A PWR
OU
TLET
40A AM1
W(W
/G)
5 2
3 1
1 IH1
GR(W/G)
A
GR
GR
(W/G
)
BK Front floorpanel RH
Cowl sidepanel LH
W–B
(W/G
)W
–B(W
/G)
1
2
P26
PO
WE
R O
UTLE
T(Luggage )
W–B
P
(W/G
)
(W/G
)
P27PO
WE
R O
UTLE
TR
ELAY
A
A
L–Y
W 4WIRE TOFFC HOLDER
W 4WIRE TOFFC HOLDER
H
H
WW
–B
1 IJ1
(W/G
)
2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
34
21
20
IS 3
00
1
120A
ALT
20A
RA
DIO
NO
. 1
11
11D2
40A
AM1
11O
61D
2
ACC
IG1
AM1
3
J10
JUN
CTI
ON
CO
NN
ECTO
R
10A
RAD
ION
O. 2
1A9 16
A7
A2
A9
A
1II1
9II1
1A
8A
1ID
25
ID2
5A
A14
10IH
411
IH4
3A
A10
3IB
39
IB3
Po
we
r S
ou
rce
Ra
dio
an
d P
lay
er
( S/D
)
A A
W
FR+
FR–
FL+
FL–
RR
+R
R–
RL+
RL–
B–LW
L–Y
GR GR
L–Y
LG
L
LG
L
R
W
P
V
P
V
Y
B
R
W
R
W
B
Y
B
Y
S 6
S 7
,
STE
RE
O C
OM
PON
ENT
AMPL
IFIE
R
AB
AC
C+
BU+B
2
I12
IGN
ITIO
N S
W
BATT
ER
Y
1
122
4A
11A
6A
15A
8IH
49
IH4
1IH
47
IH4
B–W
Y–R
R–W
W–L
B–W
Y–R
R–W
W–L
8B
9B
17B
18B
15B
1B
10B
14B
1
B
W
G
R
B
WL+
Y
WL–
R–Y
WR
+
R–W
WR
–G
ND
( E)
(Shielded)
(Shielded)
ANT+
B
L+R
+L–
R–
S–G
ND
TX+
TX–
BA2
6AN
TEN
NA
AMP
LIFI
ER
L+R
+L–
R–
GN
D( S
)TX
+TX
–
T13TWEETER RH
T12TWEETER LH
F14
FRO
NT
DO
OR
SPEA
KER
RH
F13
FRO
NT
DO
OR
SPE
AKER
LH
12
12
34
34
1
1
2
2
R 9
REA
R S
PEA
KER
AN
D W
OO
FER
LH
R10
REA
R S
PEAK
ER A
ND
WO
OFE
R R
H
WO
OFE
RR
EAR
SPE
AKE
RW
OO
FER
REA
R S
PEAK
ER
24
13
24
13
R
W
B–W
Y–R
R–W
W–L
2B12
2G9
2F5
BU+B
AC
C+B
A
GR
L–Y
GR
L–Y
GRR
12A
GN
D( E
)
GN
D
IFFr
ont f
loor
pan
elce
nter
RH
BR
BR
BR
7B
L
MU
TE
MU
TE
111
79
819
1816
515
R 2
RAD
IO A
ND
PLA
YER
1320
2B
C2
11B
C2
9BC
218
BC2
1BC
210
BC2
B
Y
5B
NA
VI–M
UTE
2B
CTX
+
11B
CTX
–
From Multi–Display<25–2>
To Navigation ECU<25–2>
From Navigation ECU<25–3>
From Navigation ECU<25–1>
R–L
Y–B
Y–R
P
G–B
G
( *1)
V ( *1)
( *1)
( *1)
(*2)
(*2)
* 2
: w/o
LE
XUS
Nav
igat
ion
Syst
em*
1 : w
/ LE
XUS
Nav
igat
ion
Syst
em
2002 LEX
US
IS 300 (E
WD
451U)
M
1 2 3 43 421
21 IS 300
1
I12IGNITION SW
120AALT
40A R
R D
EF
11
1
1 1O
40AAM1
3
4
1
2
1 2D
1D3
10AECU–IG
1D11D2
2
ACC
IG1AM1
3
4
15AMIRHTR
2C12H4
1
2
5
3
2H3 2G1 12 2K
13 ID2
1
2 2
1
1H111H3 2H10
2I13
10ARADIONO. 2
1D6
1A9
3
4
2F7
Power Source Rear W indow Defogger and M irror Heater Shift Lock
L–R
R R
R–L
2K3
2B5
IH Cowl side panel RH
W–B
B–LWW
W B–R B–R
W
From Engine C
ontrol Module
<14–7>
From A/T Indicator Light SW
[Park/N
eutral Position SW]<
14–7>
W–B
W–B
W–B
G–R
G–R
G–R
L–R
BRBR
B–R
GR
GR
G–W
GR
–B
LG–B
2
2 2
1
1
1
D
5
A
4 10 1 6
1 1
D
8 9
A
KLS+ E
IG ACC STP NSSD MT3
10AGAUGE
BATTERY
RR DEFRELAY
2
2
NOISEFILTER(DEF CDS)
NO
ISE
FILTER(D
EF C
DS )
MIR HTRRELAY
J11JU
NC
TION
CO
NN
ECTO
R
J10JU
NC
TION
CO
NN
ECTO
R
From Stop Light SW
<6–4>
<26–4>
U 1KEY INTERLOCKSOLENOID[UNLOCK WARNING SW]
S 5SHIFT LOCKCONTROL ECU
REAR WINDOWDEFOGGER
2L8
B
1L101G5
ID Cowl side panel LH
J 5JUNCTIONCONNECTOR
A
G–R
G
G–W
L–R
L
SHIFT LOCKCONTROL SW
3
2
1
4 5
SHIFT LOCKSOLENOID
P1
P
P2
SLS+
SLS–
To Body EC
U<
10–1>
N 2NOISE FILTER(Rear Window Defogger)
R12
MIR
RO
R H
EATER
RH
[REM
OTE C
ON
TRO
L MIR
RO
R R
H]
R11
MIR
RO
R H
EATER
LH[R
EM
OTE
CO
NTR
OL M
IRR
OR
LH]
1A2
W–B
W–B
W–B
A
A
J 7JUNCTIONCONNECTOR
To A/C
Control
Assem
bly<24–6>
G–O
7 1L
W–B
1B7
2
1
5
3
20AFRDEF
DEICERRELAY
1K11 1K10
BB
3
21
BB
W–B
8 IB3
B(W
/G)
1 BJ1
(W/G
)B
1 BK2
B
W–B
3 BK2
ECLeft fenderapron
W–B
2 BK2
BM
W–B
W–B
AW–B
(S/D
)B
(S/D
)
1 A
1 B
RE
AR W
IND
OW
DE
FOG
GE
R
BA
R19
R20
,
F17FR
ON
T WIN
DO
W D
EICE
R
F ront W indow Deicer
B(W
/G)
(W/G
)
(W/G
)(W
/G)
(W/G
)
Left side of theback panel Upper
2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
34
21
( Con
t. n
ext
page
)22
IS
300
1
20A
ECU
–B1
120A
ALT
11
I12
IGN
ITIO
N S
W
12C1
2M6
1O1
7. 5
AS
RS–
B10
AM
PX–B
40A
AM1
21D
2H5
2G3
11D
2
ACC
IG1
AM1
4
1H7
1E2
1H2
17A
15A
16A
5 BC2
1B
19A
12A
IEFr
ont f
loor
pan
el c
ente
r LH
TACHOMETER
SPEEDOMETER
MOMENTARY FUELCONSUMPTION
VOLT
WATER TEMP.
FUEL21
A20
A
3A
5B
14AA
13
4BC
2
1210
B 1
10A
GAU
GE
BR–W
C 9
C10
,
CO
MBI
NA
TIO
N M
ETE
R
AB
BA
A/C
CO
NTR
OL
ASS
EMB
LY, A
13A1
2
See VSC System orABS and TractionControl System<16–10><17–7>
W
B
W
B–L
W
R–Y
LG–B
R–L
R–Y
LG–B
L–R
R–Y
DOOR
BR–W
12
YY
Y–R
L
O
B 5
B 6
,
BO
DY
ECU
AB
122
FRM
PX2
FE
P 3
PAR
KIN
GBR
AKE
SW
F15
FUE
LSE
ND
ER
F16
FUE
LSE
ND
ER( S
ub)
1
BAT
TER
Y
PKB
Po
we
r S
ou
rce
Co
mb
ina
tio
n M
ete
r
LG–B
R–Y
MP
X+
L–R
BR–W
32
O
O
78
T 6THEFT DETERRENT ECU
C C
C C
J 6JUNCTIONCONNECTOR
Y–R Y–R
Y–R
Y–R
From
Ski
d C
ontro
l EC
U<1
6–7>
<17
–6>
From
Day
time
Run
ning
Ligh
t Rel
ay( M
ain)
<3–
4>
R
BUZZ
ER
MPX
1
MPX
2
(M/T)
(A/T)
LCD
CY–
RFr
om M
ulti–
Dis
play
<25–
2>
(M/T)R–Y
IG+
SISE
32
1
16IA
111
IA3
(M/T)R
(M/T)R–Y
8E
A26
EA2
7EA
2
(M/T)R
(M/T)R–Y
(M/T)R–L
DDJ
2JU
NC
TIO
NC
ON
NE
CTO
R
(M/T)R–L
1K9
R–L
( M/T
)R
–L( M
/T)
(M/T)R–L
V 9
VEH
ICLE
SPE
ED S
ENS
OR
( Com
bina
tion
Met
er)
13A
W–L(A/T)
W–L(A/T)
14IH
3
BBB
BW
–L( M
/T)
From
Nav
igat
ion
ECU
<25
–2>
From
Eng
ine
Con
trol
Mod
ule<
2–11
>
From
Mul
ti–D
ispl
ay<
25–2
>
J 7
JUN
CTI
ON
CO
NN
ECTO
R
W–L
( A/T
)
W–L
( M/T
)
W–L
( M/T
)
W–L
( A/T
)
W–L
14A
BFrom EngineControl Module<2–4>
W–L
( M/T
)
R
M
2002 LEX
US
IS 300 (E
WD
451U)
M
5 6 7 8
22 IS 300 (Cont’ d)
Combination M eter
8 B 2 A 3 A 4 A A22
5 A 6 A 10 A18 A 8 A 6 B 7 A 9 A 3 B 4 B
See Turn Signal andH
azard Warning Light
System<
4–3>
See Illumination
System<
5–2>
See H
eadlightS
ystem<3–3>
See Theft Deterrent System
<11–3>
See Engine Control and
Engine Imm
obiliser System<
2–3>
See Taillight andStop Light System
<6–3>
<26–3>
See SRS S
ystem<
18–3>
See Illumination
System<
5–2>
See VSC S
ystem (w
/ VSC)or
ABS and Traction C
ontrolSystem
(w/o VS
C)<
16–11><
17–8>
See Headlight
System<
3–3>
Cowl side panel RH IH
TUR
N LH
TUR
N R
H
BEAM
CH
ARG
E
OIL P
RESS
UR
E
OIL LE
VEL
SEAT BE
LT
SN
OW
EC
T PWR
FUEL
CR
UISE
BRA
KE
ILLUM
INATIO
N
SRS
REAR
LIGH
TS
MA
LFUN
CTIO
NIN
DIC
ATOR
LAMP
ABS
TRA
C O
FF
SLIPSECU
RITY
BR
C 9 C10,
COMBINATION METER
A B
9 B
To Daytim
e Running Light
Relay (M
ain )<3–4>
Y
AJ 7JUNCTIONCONNECTOR
BR
11 A
See Headlight Beam
LevelC
ontrol System<
8–2>
BEAM
LEVEL
A
W–B
2F7
2B5
VSC
5 B
See VSC
System (w
/ VSC
)orABS
and Traction Control
System(w
/o VSC
)<16–11>
<17–8>
See VSC
System<
16–11>
2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
1
34
21
23
IS 3
00
30A
RD
IFA
N
30A
CD
SFA
N
120A
ALT
40A
AM1
10A
ECU
–IG
2IG
1AM
1
3
4
21
35
21
53
4
1H3
33
33
33
W–L
3
11
1D1
2H10
2A7
33
33
3
J 3JUNCTIONCONNECTOR
3
21 M
12 M
ECLe
ft fe
nder
apr
onIH
Cow
l sid
e pa
nel R
H
23
11C
A
2
AA
CC
2
B–LW
W
L
W
B–R
L–B
W–B
L–W
L–B
W–B
W–BL–B
L–B
L–W
L–R
W
L L–W W–B
L–B
L–R
L–R
WL
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W–B
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A 4A/C SINGLEPRESSURE SW
D 7DIODE(A/C)
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FAN NO. 3RELAY
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2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
34
21
( Con
t. n
ext
page
)24
IS
300 1
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112
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2002 LEX
US
IS 300 (E
WD
451U)
M
5 6 7 8
24 IS 300 (Cont’ d)
F
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9–1>
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2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
25
IS 3
00
2 7
ACC
IG1
IG2
ST2
AM1
3 4 8
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SW
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2002 LEX
US
IS 300 (E
WD
451U)
M
1 2 3 43 421
26 IS 300
TAILRELAY
1
1
2
1
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2002 LEXUS IS 300 (EWD451U)
M OVERALL ELECTRICAL WIRING DIAGRAM
12
34
27
IS 3
00
2
ACC
IG1
AM1
4
I12
IGN
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W
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2002 LEX
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IS 300 (E
WD
451U)
M
1 2 3 43 421
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1
120AALT
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1
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XX
J13JUNCTIONCONNECTOR
J16JUNCTIONCONNECTOR
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