12 SIENTA (Cont.

next page)

H e a d lig h t (w /o S m a rt E n try & S ta rt S y s te m ) ∗ 3 : w/ Automatic Light Control

∗ 4 : w/o Automatic Light Control

1 2 3 4
(BAT) (BAT)

20A 20A
H–LP LO H–LP HI

2 2

1 1

(∗4)
R

B
L
R L
(∗3)

2 2 2 2

G
V

3 1 1 3
2 2
H–LP DIM
Relay Relay

1 1 1 1
5 2 2 5

10A 10A 10A 10A

H–LP H–LP H–LP H–LP 2 2 2 2
LH–LO RH–LO LH–HI RH–HI

(∗4)

(∗3)

(∗3)
2 2 2 2

G
V

P
L
P(∗3)
2 2 2 2
A
V(∗3)
B

(∗4)

(∗4)
V

P
V

20 AH3 16 AH4 14 AH3

(∗4)

(∗4)
GR

BE

W
R
B

V
Headlight Assembly RH
Headlight Assembly LH

2 A 2 B 2 A 2 B
LO HI LO HI
A2(A), A10(B)

A1(A), A9(B)

Headlight Headlight
High/Low High/Low
E E E E
1 A 1 B 1 A 1 B
W(∗4)
C
W–B

W–B

W–B

W–B

BE(∗4)
D
V
E
W–B

W–B

AA AE
12 SIENTA (Cont' d) (Cont. next page)

H e a d lig h t (w /o S m a rt E n try & S ta rt S y s te m ) ∗ 3 : w/ Automatic Light Control

∗ 4 : w/o Automatic Light Control

5 6 7 8
H86(B), H87(C)
(BAT) (IG) Body ECU

25A 10A
D/L ECU–IG
NO. 1
IG BECU DIM HRLY TACH
2 2 7 6 11 16 13 B

2 3K 1 3K

V
(∗3)

(∗3)
P

ECM< 9–8>
P(∗3)
A
V(∗3)
B

W(∗4) W(∗4)
C A
BE(∗4) BE(∗4)
D B
V V
E C
12 SIENTA (Cont' d) (Cont. next page)

A u to m a tic L ig h t
C o n tro l (w /o S m a rt L ig h t A u to T u rn O ff S y s te m
H e a d lig h t (w /o S m a rt E n try & S ta rt S y s te m )
E n try & S ta rt S y s te m ) (w /o S m a rt E n try & S ta rt S y s te m )
9 10 11 12
H86(B), H87(C)
Body ECU

TAIL HEAD A HF HU CLTE CLTB CLTS RFOG TRLY

7 C 8 C 6 C 13 C 14 C 3 C 5 C 4 C 9 C 1 B

(∗3)

(∗3)

(∗3)
GR

W
A

B
(∗8)

2 1 4 (BAT)
CLTE CLTB CLTS

LG
(∗3)

(∗3)

(∗3)

(∗3)

(∗3)

(∗8)

(∗7)

(∗3)
SB

LG

B
W
G
L
10A
TAIL

H85
Automatic Light Control Sensor 2

G
9 AH4 R
(∗4)

(∗4)
SB

G(∗4)

W(∗4) 1 1

Y
13 11 12 14 20 7 9 2 5

(∗4)

(∗4)
G

L
T H A HF HU BFG B
TAIL
Relay

H69(A), H70(B)
No. 3 Junction
T H EL A HF HL HU ED BFG LFG B
Dimmer Switch

Connector
OFF 6 B 7 B 1 3

Fog Light
Flash OFF
Light Control

(∗4)

Switch
AUTO 1 1
Low Front (∗8)
Switch

(∗3) 6 A
LG
Tail High Rear (∗7) B
(∗8)
Head

(∗4)
BE

LG
EL LFG
19 H8 8
Headlight Dimmer Switch Assembly
(∗3)

(∗4)
BR

BR

H69(A), H70(B)
No. 3 Junction

(∗8)

(∗7)
BR

BR
Connector

4 B 21 B

9 A 3 B 15 A 20 B
(∗3, ∗7)

(∗4, ∗8)
W–B
(∗7)
BR

BR

W(∗4)
A
BE(∗4)
B
V
C
3 6A LG
C
V
∗ 3 : w/ Automatic Light Control D
∗ 4 : w/o Automatic Light Control
∗ 7 : w/ Rear Fog Light
HA ∗ 8 : w/ Front Fog Light
12 SIENTA (Cont' d) (Cont. next page)

F ro n t F o g L ig h t
(w /o S m a rt E n try T h e ft D e te rre n t
R e a r F o g L ig h t (w /o S m a rt E n try & S ta rt S y s te m )
& S ta rt S y s te m ) (w /o S m a rt E n try & S ta rt S y s te m )
13 14 15 16
H86(B), H87(C)
Body ECU

SH HCTY RFGO HORN WLS1 SPD HAZ

10 20 15 9 1 C 5 B 6 B

P (BAT) (BAT) (BAT)

A
(∗8)

(∗11 ∗16)

(∗11 ∗17)
10A 10 3K 9 3K 8 3S

SB

P
7. 5A 7. 5A
FOG FR

Y
SECURITY FOG RR
/DRL
(∗8)
P

2 2 2

Combination Meter
HORN Relay

Combination Meter
Assembly< 33–10>
(∗17)

Assembly< 15–7>
2 7 3J 2

< 25–3>
15 AH3

Junction Connector

(∗7)
P

Unit LH< 29–2> < 29–3>

(∗7)
L
G

Y
14 18 AH5

Slide Door Motor

13

No. 8
A79
(∗8)

(∗8)

(∗1)
SB

G
B GR

(∗7)
12

(∗20)

P
W
(∗1)

2 2 2 2 2 2 9 9
3 AH4
1 5 1 5 1 5 5 1

FR FOG DRL SECURITY FOG RR

(∗20)

(∗17)

(∗16)
Relay Relay Relay Relay

W
W
G
2 3 2 3 2 3 3 2

2 2 2 2 2 2 9 9

Option Connector
LG
(∗8)

(∗1)

(∗1)

B
B

(∗8)

(∗7)

(∗7)

(∗7)
GR

< 31–3>

SB

G
L
(∗8) 2 AH3
(∗8)

(∗8)

(∗1)

(∗1)

Security Horn Assembly

G

G
L

1 16 UH2

Hood Lock Assembly

Fog Light Assembly LH

2 2 18 AH4 +
2 2 1
Light Assembly RH

Light Assembly LH

B B
Daytime Running

Daytime Running

(∗7)
B B ∗ 1 : w/ DRL

L
Assembly RH

Rear Fog Light Assembly

2 ∗ 7 : w/ Rear Fog Light
Fog Light

∗ 8 : w/ Front Fog Light

A73

A38
L E
B ∗11 : w/ Power Slide Door
A12

A11

A71

A72

E E E E
2 2 ∗16 : Before Mar. 2018 Production
1 1 1 1 ∗17 : From Mar. 2018 Production
W–B

W–B

W–B

W–B

W–B
(∗8)

(∗8)

(∗8)

(∗1)

(∗1)

(∗1)

BR
∗20 : w/ Option Connector
P
L

U8
1
G(∗7)
A

W–B
(∗7)
SB(∗7)
W–B

BR

B
(∗1, ∗8)

(∗1, ∗8)

P(∗1)
W–B

W–B

C
L(∗8)
D
LG LG
C E
V V
D F

AA AE AA AE UB
12 SIENTA (Cont' d) (Cont. next page)

T a illig h t (w /o S m a rt E n try & S ta rt S y s te m )

17 18 19 20
H86(B), H87(C)
Body ECU

R
A

R
∗ 1 : w/ DRL
6 3Q
∗ 7 : w/ Rear Fog Light
∗ 8 : w/ Front Fog Light
∗11 : w/ Power Slide Door
∗12 : w/o Power Slide Door
∗19 : From Mar. 2018 Production Except Singapore
5 3J 4 3L 5 3V
∗22 : w/ Illumination

G
U69
LG

17 No. 10 Junction Connector

A79
22 No. 8 Junction Connector
16 G 21 18 19 20 22
(∗19)

(∗22)
18 19

Y
(∗22)
V
13 XU1
18 UN1

< 9–17>
LG

SB

ECM
13 UP1

G
(∗22)
G

Rear Combination Light Assembly RH

Rear Combination Light Assembly LH

13 XY1

(∗22)

Rear Power Window Regulator Switch Assembly RH

P
Headlight Assembly RH 3 SN1
Headlight Assembly LH

2 2

(∗22)
B B

L
3 TP1
Clearance

Clearance

Rear Power Window Regulator Switch Assembly LH

3 3
6
TL TL

(∗22)
ILL+

Tail

Tail
E E

(∗22)
A6

A5

BR
Light Assembly RH
1 1 Light Assembly LH
R

R
6 E E

U6

U7
License Plate

License Plate
20 TP1
W–B

W–B

ILL+ 4 4
1 1
Y2

Y1

2 2

(∗11 ∗22)
ILL–

S1
BR
W–B

W–B

(∗22)
(∗12 ∗22)

BR
BR
ILL–

T1

W–B

W–B
5 20 SN1

(∗11 ∗22)
BR
W–B

W–B

W–B

(∗22)
BR
G(∗7) G(∗7)
A B
SB(∗7) SB(∗7)
B C
P(∗1) P(∗1)
C D
L(∗8) L(∗8)
D E
LG V
E F
V
F

AA AE YA PA NA UC UA
12 SIENTA (Cont' d) (Cont. next page)

Illu m in a tio n (w /o S m a rt E n try & S ta rt S y s te m )

21 22 23 24
H86(B), H87(C)
Body ECU

R ECM< 9–17>
A

(∗18)
LG
R

R
H67(A), H68(B) H73(A), H74(B)
No. 2 Junction Connector 15 A 3 B 3 A 5 B No. 5 Junction Connector

14 A 19 B 21 B 20 B 8 A 8 B 4 B 5 A 6 A 9 A 10 B 7 A

(∗22)
(∗11)

G
P
(∗7)

GR
W
G

5 LH1 1 3

(CVT)
ILL+ ILL+ 4 LH1 2 MH1

BE

SB
B

Y
L
Door Control Switch Assembly
R

(∗22)
R
P
14

Hazard Warning Signal Switch Assembly

Heater Control Sub–Assembly No. 1

Heater Control Sub–Assembly No. 2

Rear Blower Heater Switch

Power Window Regulator Master Switch Assembly

ILL+
17 6 3 5

Heater Control Sub–Assembly No. 3

Front Power Window Regulator

ILL+ ILL+ ILL+ ILL+
Outer Mirror Switch Assembly

5 2
ILL+ ILL+

Switch Assembly LH
H23

ILL– 5 7

H83

No. 9 Junction Connector

ILL–

Indicator Light Wire

VSC Off Switch

16 ILL+ ILL+
2

Sub–Assembly
(∗11)
BR

BR

H34

H35
ILL– E

H84
ILL– ILL– ILL– ILL–

M1

H2
L3

6 5

H33

H81
14 17 ILL– ILL–
8 5 2 4
4 14
H91

ILL–

(∗22)

W–B
L1
15 13 20 18 19 16 21

BR

BR

BR

BR
(CVT)
5
BR

BR

W–B
BR

BR

BR

BR

BR

17 LH1
BR

G(∗7)
B
SB(∗7) SB(∗7)
C A
P(∗1) P(∗1)
D B
L(∗8) L(∗8)
E C
V V
F D
4 6B 5 6A 4 7B
∗ 1 : w/ DRL
∗ 7 : w/ Rear Fog Light
∗ 8 : w/ Front Fog Light
HA HA ∗11 : w/ Power Slide Door HB HC
∗18 : Before Mar. 2018 Production, From Mar. 2018 Production Singapore
∗22 : w/ Illumination
12 SIENTA (Cont' d) (Cont. next page)

Illu m in a tio n L ig h t R e m in d e r S e a t B e lt W a rn in g
(w /o S m a rt E n try & S ta rt S y s te m ) (w /o S m a rt E n try & S ta rt S y s te m ) (w /o S m a rt E n try & S ta rt S y s te m )
25 26 27 28
H86(B), H87(C)
Body ECU

IND DBKL
17 B 23
Transponder Key (BAT) (IG)
ECU Assembly< 6–3> ∗ 1 : w/ DRL
∗ 7 : w/ Rear Fog Light
4 3T 2 3U
5A 5A ∗ 8 : w/ Front Fog Light
ECU–B
NO. 2
METER ∗ 9 : Malaysia
∗10 : Except Malaysia

W
H73(A), H74(B)

(∗10 ∗21)
∗16 : Before Mar. 2018 Production

(∗9 ∗21)
No. 5 Junction Connector

Junction Connector
2 2 ∗17 : From Mar. 2018 Production

B
GR

Junction Connector
H67(A), H68(B)
∗21 : w/ Immobiliser System
1 5 3S
∗23 : w/ Headlight Beam Level Control (Manual)
4 A 9 B 6 B 2 A 11 B 1 A
19

No. 2

No. 4
H71
10 B 14 AH5
GR

Front Seat Inner Belt Assembly RH

20

SB
W
BE
SB
SB(∗7)
(∗23)

B
SB
B

L(∗8)
H1(A), H3(B)
12 B 11 B 20 A 13 A 40 A 39 A Combination Meter Assembly 4 A 3
3 ILL+
FOG S LP B IG+ L
ILL+

Front Fog

Rear Fog

Passenger' s

U14
Headlight Leveling Switch

Seat Belt/
Seat Belt
Driver' s
2

Security
Option Connector

Door

Tail
10 A
5V IC
ILL+ BUZZER
5V+B
H40(A)

GND1 E
H7

BR
7 A 4 I/F

Beam
(∗23)
W–B
BR

CPU

10 AH4
+ – DRLE ET SW KSWO
(∗23)

19 A 15 A 17 A 21 A 25 A 11 A
W–B

3 A

SB

BE
(∗1)
+
BR
V

P
BE
18 UH3
A
(∗17)

BE
(∗23)
W–B

Occupant
Detection
B

Sensor
(∗16)
SB(∗7)
A

Belt Assembly LH
P(∗1)

Front Seat Inner

B
L(∗8)
C

U15(A)
Buckle Switch
V E
D 2 A
BR

BR
BR
C
HD AA HD UD UB
12 SIENTA (Cont' d) (Cont. next page)

K e y R e m in d e r (w /o S m a rt E n try & S ta rt S y s te m ) B a c k D o o r O p e n e r (w /o S m a rt E n try & S ta rt S y s te m )

29 30 31 32
H86(B), H87(C)
Body ECU

KSW BDSU TR+ BCTY

8 B 17 4 21

∗ 9 : Malaysia
∗16 : Before Mar. 2018 Production
4 3U 1 3V 3 3U
∗17 : From Mar. 2018 Production B
∗20 : w/ Option Connector A
(∗16)

(∗17)

(∗16)
L

L
Junction Connector

Junction Connector
B

(∗16)

(∗16)
H69(A), H70(B)
B

Junction Connector
(∗17)
3 A 2

No. 3

No. 4
H71
1 2

No. 10
4 A 8 B 2 A 9 B 3 4 1

U69
3
(∗9 ∗17)

(∗9 ∗16)
(∗20)

(∗17)

(∗17)

(∗16)

(∗16)
LG

BE

BE

LG
W

W
R

Un–Lock Warning Switch Assembly

(∗16)

(∗17)

(∗17)
W

B
W

Junction Connector
1 (∗17)
UN+
Option Connector
ECU Assembly< 6–3>

ECU Assembly< 6–3>

2 4 3
Transponder Key

Transponder Key
15 XU1 2 XU1 18 XU1

No. 4
U71
< 31–3>

1
H13

UN–
2

W
V

(∗20)
B
BR

10 XY1 2 XY1 18 XY1

Junction Connector

Option Connector
W
V

P
Back Door Opener Switch Assembly
H69(A), H70(B)

2 B

< 31–3>
3 A (∗16) 1 3
No. 3

3 B (∗17) ACT+ D+

Back Door Lock Assembly

11 A 9 A UL

Courtesy
Y5(A), Y11(B)

Open

Switch
BE M
BR

BR

A
(∗17)
E
2 A (∗16)
BE 2 B (∗17) ACT–

Y4
B
(∗16) 2

W–B
BR

3 6A
BR
C
HA YA
 B
A

1
10
L

U69
B
B

(∗17)
(∗16)
U4
Rear Door Courtesy Light Switch Assembly RH

1
9
L

No. 10 Junction Connector

U3
Rear Door Courtesy Light Switch Assembly LH
12 SIENTA (Cont' d)

1
8
B
33

U1
Front Door Courtesy Light Switch Assembly LH

7
3
2

11
B P

PCTY
BCTY

1
2
1
W L W

11 UH3
L

U13
No. 1 Luggage U70
Compartment Diode (No. 1 Luggage
Light Assembly Compartment Light Assembly)
2

19

G G
1

11 AH3
(BAT)

15A

21
RADIO

H67
W No. 2
B

Junction
34

Connector
3
5

L
9
9

4 WH2
R

1
2

9
9

CUT
Relay
DOME
13

BE
14 3S
DOMR

SB
Body ECU

W1
Map Light Assembly
H86(B), H87(C)

4
1

15
14
W–B W–B W–B W–B SB
E
B

HA
1 WH2

H69
No. 3 Junction Connector
3

L
CTY
2

B
SIG
35
In te rio r L ig h t (w /o S m a rt E n try & S ta rt S y s te m )

W2
No. 1 Room Light Assembly
3
1

B SB
B

CTY
2

W–B
E
8

L LA–B
6 3T
ILE

2 WH2

B L BE
8 A
9 A
14 B

15 UH3
PCTY

Combination Meter B G Option Connector

4 B
3 B

Assembly< 33–3> (∗20) < 31–4>

H67(A), H68(B)
No. 2 Junction Connector
1
18

R
1 3U
36

DCTY
∗20 : w/ Option Connector

U2
Front Door Courtesy
Light Switch Assembly RH
∗17 : From Mar. 2018 Production

G
∗16 : Before Mar. 2018 Production

Combination Meter
17 B

Assembly< 33–3> (∗17) Combination Meter R

5 3T

Assembly< 33–3> (∗16)

Option Connector Y R
17 A
18 B

< 31–4> (∗20) (∗17)

H67(A), H68(B)
No. 2 Junction Connector
(Cont. next page)
12 SIENTA (Cont' d) (Cont. next page)

P o w e r W in d o w (w /o S m a rt E n try & S ta rt S y s te m )

37 38 39 40
H86(B), H87(C)
Body ECU

GND
1

L1
(IG) (BAT) (BAT) (IG) Power Window Regulator Master Switch Assembly

Block Assembly
10A 120A 10A
ECU–IG 120A ECU–IG

Fusible Link
ALT
NO. 1 ALT NO. 1

A68(C)
1 3H
U D AUTO E B
2 2 2

(∗19)
1 C 3 6 4 9 7

B
1 1D 7 3S

Regulator Motor Assembly RH

(∗18)

W–B
PWR

GR
G

R
B

L
Relay

Front Power Window

10 7 4
UP DOWN AUTO
6 LH1

1 1 1 1 IG B GND

L2
6 2 1
20A 20A 30A 20A
DOOR DOOR P/W DOOR D
RL RR

W–B
LG
W

G
2 2 2 2

9 LH1 1 LH1 3 B
H75(A), H76(B)
7 3Q 8 3V 4 3R 6 3O 5 3R No. 6 Junction
V Connector
3 A 4 A
W–B

GR

G
P

G
B
A
P
B
SB
C

∗18 : Before Mar. 2018 Production, From Mar. 2018 Production Singapore
∗19 : From Mar. 2018 Production Except Singapore

1 7A 6 6B 3 6B

HB HA
12 SIENTA (Cont' d) (Cont. next page)

∗16 : Before Mar. 2018 Production

P o w e r W in d o w (w /o S m a rt E n try & S ta rt S y s te m ) ∗17 : From Mar. 2018 Production
∗20 : w/ Option Connector

41 42 43 44
H86(B), H87(C)
Body ECU

UL1 L1
12 B 19 B

L1
Power Window Regulator Master Switch Assembly

U D U D U D U D
10 18 12 13 15 16 15 16

(∗16)

(∗17)

(∗16)

(∗16)
BE

BE

BE

SB

SB
W

G
R
P

V
L
1 LH2 9 LH2 2 LU1 4 LU1 1 LU1 3 LU1 10 LH1 15 LH1
W

W
P

V
L
16 MH1 6 MH1 4 UP1 5 UP1 3 UN1 2 UN1

H75(A), H76(B)
5 B 2 B

Connector
(∗17)

(∗17)

Junction
W

W
G
R
P

V
L

No. 6
6 B 1 B 1 A 6 A

13 TP1 8 TP1 13 SN1 8 SN1

(∗20)

(∗20)
W
G
R

G
V
L
6
B
A UH2
P

B
B
SB
C

Option Connector
2 UP1 5 UN1

< 31–4>
G

B
Front Power Window Regulator

Rear Power Window Regulator

Rear Power Window Regulator

1 MH1 3 4 12 TP1 3 4 12 SN1 3 4
SU SD SU SD SU SD
L 2 B G 2 B B 2 B

Switch Assembly RH
Switch Assembly LH

Switch Assembly LH

Up Down Up Down Up Down

U D U D U D
M1

S1
T1

7 1 7 1 7 1
LA–Y

LA–B

LA–Y

LA–B
G
R

2 1 1 2 1 2
M M M

M2 T2 S2
Front Power Window Regulator Motor Assembly LH Rear Power Window Regulator Motor Assembly LH Rear Power Window Regulator Motor Assembly RH
12 SIENTA (Cont' d)

W ire le s s D o o r L o c k C o n tro l
D o o r L o c k C o n tro l (w /o S m a rt E n try & S ta rt S y s te m )
(w /o S m a rt E n try & S ta rt S y s te m )
45 46 47 48
H86(B), H87(C)
Body ECU (BAT)

5A
ECU–B
NO. 2
UL2 L2 LSWD ACT– ACT+ PRG RDA
11 B 18 B 15 B 3 2 9 B 16 B 2

(∗17)
LG

Junction Connector
2 3Q 3 3Q 2 3V 3 3V
(∗17)

(∗17)

(∗16)
GR
BE

LG
G

R
B

P
16

No. 12
H95
(∗16)

(∗16)

H95
5 A 1 A (∗16) H75(A), H76(B)
G

R
No. 12 B
Junction Connector 15 4 11 A 7 A (∗17) No. 6 Junction Connector
17 18

(∗17)

(∗20)
GR
P
1 B 5 B 6 A 2 A 6 B 2 B (∗16) 12 B 7 B

Slide Door Motor

13 2 14 3

Unit LH< 29–4>

8 B 10 B 12 A 8 A 11 B 9 B (∗17) 15 AU2
(∗20)

(∗20)

(∗17)

(∗17)

(∗20)

(∗20)
BE

LG

R
V

V
L

Junction Connector
7 UH3 17 UH3

Option Connector
12 UH2 18 UH2 12 UP1 18 UP1
4

< 31–2>
SB

B
L

No. 10
R
V

U69
Option Connector

(∗11)
GR

Y
Option Connector
7 UN1 13 UN1 5

< 31–3> < 31–4>

3 LH1 2 LH1 14 LH1 12 LH1 7 LH1 12 MH1 7 MH1

LG
V
< 31–4>

GR
7 TP1 1 TP1 14 TP1

R
BE

G
R
Y

Y
7 SN1 1 SN1

(∗11)
GR

Y
Slide Door Handle Assembly RH

Slide Door Handle Assembly LH

GR
3 2 5

P
PRG RDA +B
5 6 7 1 4 1 4 2 3 2 3 1
UL L LSSR UL L UL L L UL L UL LSSR

GND
M M M M
1 U21
E Door Control Receiver
S3

T3
4

(∗11)
BR
8 L4 M4 ∗11 : w/ Power Slide Door
Front Door Lock Front Door Lock with Motor Assembly LH
with Motor Assembly RH ∗16 : Before Mar. 2018 Production
15 TP1
BR

∗17 : From Mar. 2018 Production

∗20 : w/ Option Connector

(∗11)
BR

BR
(∗11)
BR
5 6B

HA PA UC