Page 2297 of 2572

2005 HIGHLANDER (EWD592U)
M OVERALL ELECTRICAL WIRING DIAGRAM
1
234
18 HIGHLANDER(
Cont. next page)
2
13 2ACC
IG1 AM13
4
1A 140A AM11 21C 6
20A P FR DOOR
1K 62I 1
25A DOOR LOCK
2A 2
7. 5A ECU- B
2A 4
3IB1 8IL1D. C. C
5IC3
2IB21G 10
1D 3
IALeft Cowl Side Panel 1D 141E 44M64L8
4L 102IB1 1C 7
7. 5A IG1
1D 11K10
3IB2
9 10 209D 4D 17A 5A
3A 10
3B 5
216 10 A
5IF3
1IB2
B WWFL MAIN
3. 0W
Batt ery
W- B W- B W- B
W- B
L- WR- LL
G
1C 2
7. 5A RAD NO. 2
1J 6
3A 8
3C 6W
GR
8IK2
R- B W- L BR
B
8GR
W- L
7 BRGB B BR
W
B
BR
W
V
Y
OY
B B 1D
LB
5IB1 4IB1 13 IA2
B
L
LL
2D
BRBR R
W
BR
4G
14Y
3LG
4321 5 6
3 65
W- B
IN12
W- B14 IN2 7 IN2
WP
7B
RR12 B
LGLG
W- B W- B
W- B
4B
B
C
D G
L
W- B
Power SourceDoor Lock Control
W
BDR SI G CPUBMPX1
GNDMPX2
KL KUL LSWE LSW BECU BDR1 ACC IG MPX2
LULELSSR L ULOBD2 ACT+ ACTD PML PMUL
L G 6
1H
10A DOME12 IK34D 9 2A 3
4H 6A R
R R
V
Multiplex Communication
System (
BEAN Bus)
<20- 3>6BMPX1
Multiplex
Communic at ion
System (
BEAN Bus)
< 20- 3>
140A ALT
ST 1
Data Link Connec tor 3
<2- 18><3- 15> O
I15B 9(
A)
, B10(
B)
, B11(
C)
, B12(
D)
D11
D1 2J 5
P 5 F 7Bo dy ECU
Door Lock Control
SW
Door Key Lock and Unloc k SW Fr ont LH
Door Lock Motor Front LH
Door Unlock Detection SW Front LH Fusible Link
BlockI gnit ion SW
Junct ion
Connect or
Power Window Mas ter SW with ECU
Page 2298 of 2572

2005 HIGHLANDER (EWD592U)
M
5
678
18 HIGHLANDER (
Cont' d)
W ireless D oor
Lock Control
D C BG
L
W- B1IN2 8IN2
V
13 B
SBSB V
GR4 3
LULPKUL
8B
VPKL
2IN211 B
BRBR BR6
LSSR LSWP
5IN1
LW1
L4IN1
WR2
UL C C
C
W
5E6DWACT-
A A
AA
G
C C
CC
V
BALeft Center Pillar 11 BB1
W- B W- B
6BB1 13BB1
B GB-W
GR
3 17BB1
VL-B4
2 IA110
V
BBRight Center Pillar 13 BC1
W- B W- B
11 BC1 6 BC1
V SB B- W
L- B
1 27BC1
BR GR4
3A A
AA
B 17 DBLSWA
17 BH1 8 BH1 15 BH1
BELeft Side of Back Door
W- B
3BG2 1BG2
V GG
R
1 28BG3
BV4
32BKSW
B
V GB
4H 11
4L 7
W- BIC Right Cowl Side
Panel7DW- BGND1W- B
W
G
A17 C
YPRG
16 C
GRRDA AR
BFRight Side of
Rear Cross Member
W- B R
BR SB B
W- B325
1 15 IO2 10 IO214 IO2
Door Lock Control
E PRG RDA +B
Key Reminder and
Seat Belt Warning System
<26- 2>19 AHA Z
L15 CBZR
W
14 IK3
L- Y2 1
IK3 3W- B W- B4M 3
LSSR L UL
EUL L LSSR
EACT- ACT+ S
E 3IA1
B
BCLeft Side of
Re ar Cr oss
MemberW- BD D
B
Tur n Signal Flasher
<8- 3>
A A
AJ19
W- B D13D1 4
W 5
W 6 J12 B 9(
A)
, B10(
B)
, B11(
C)
, B12(
D)
J10
J 5 J10
J14B15 D15 Body ECU
Bac k Door Lock Motor
Bac k Door Unlock Detection SW
Door Key Lock and Unloc k SW Front RH
Door Lock Motor Front RH
Door Unlock Det ect ion SW Front RHDoor Loc k Motor Rear LH
Door Unlock Det ection SW
Re ar L HDoor Lock Motor Rear RH
Door Unlock Detection
S W Re ar RH Junct ion
Connect orJunc tion
Connec tor
J unc tion
Connec torJunct ion
Connect or
Junction
Connector
J unc tion
Connec tor
Junction
Connector
Wireless Door Lock
Buzzer
Wireless Door Lock
ECU
J18
Bu zz er
Page 2299 of 2572

2005 HIGHLANDER (EWD592U)
M OVERALL ELECTRICAL WIRING DIAGRAM
1
234
19 HIGHLANDER
Power SourceT he ft D ete rren t S y s tem
7. 5A ECU- B
15A SECURI TY
2A 4 2A 5
2I 12ACC
IG1 AM1 4
40A
AM1
1A 11C 6
32
110A
ECU- I G 1C 7
1K 9
3A 1
3E 5
3J 11
3F 13
IBRight Ins tr ument
Panel Br ac e17 IL2
14 IA28IL2
4IA2
9BG3 4BG2
SB BR
Y LG
V B
BRY23 15 33 31
Multiplex Communication
Sy st em (
BEAN Bus)
<20- 4>A
BE Left Side of
Ba ck Do or1 23110
114IC3
2IF1 5IC3
1G 10
1D 9
11 IL1 18 IL2
3C 8
3B 2
1 26IL2
15 IK317 IF3
2IC3
1 A
EG Under the Left
He ad li g ht G
D. C. C
1 2
WW
Batt ery
W- B W- B
3 212L
BRWL
OP G
P
R
W- BB
W- B LG B B- O
WG G-BW-B
2 1
140A ALT
IG
I OUT MPX1 L UL DSWH
34 +B2 +B1 KSW
SH- E
1 29
W- B L
W- LRG
O
FL MAIN
3. 0W
Unlock Warning SW
<26- 2>
53D
3F 1125
W- B O
O
IND S+B
GND IOUT
WOp t i on
Connec tor 1
<20- 4> Op t i on
Connec tor 1
<20- 4>
BLG
(
*1)(
*1)* 1 : w/ o Theft Deter rent Sys tem
E E
P
YW- L
B
ST1
11 3K
Tr ans ponder Key Comput er
<4- 4>
R F 7I15
T 4
T 5
O 4E 3T 1
J 1 B14
J14Back Door Key Lock
and Unloc k SWEngine Hood
Courtesy SW
Fusible Link
BlockIgnition SW
J unc tion
Connec tor Junc tion
Connec tor
Option Connector 2Theft Deterrent
Ho r n
Theft Deterrent ECU
Theft Deterrent
Indicator Light
Junction
Connector J17
Page 2300 of 2572

2005 HIGHLANDER (EWD592U)
M
34
2 1
20 HIGHLANDER
2ACC
IG1 AM1 4
1C 6
1A 12
1
W B
Batt ery W
W
81H
Power Source Moon Roof
20A S/ROOF40A AM1
2IE1
Left Cowl Side Panel
IA
WW- B W- B
G W89 7DWNMPX1
UP EL1
B
FL MAIN
3. 0W
W- B4D 5
4M 64N1
1E 4
1D 14W- B
ICRight Cowl Side PanelW- B
6IE1
Y GR GR10MPX1 MPX2
6B
10 A
OMPX2 MPX19B
21 AMPX- MPX+
9A
2B
YMPX+ MPX-
5IF3
1IB28 7
MPX2 MPX1 8IB24A 5
4F 74O4
GR
GR Y V SBY
GR
M u ltip le x C o m m u n ic a tio n
System (
BEAN Bus)
IL21
* 2 : w/o Theft Deterrent System
(
*2)
* 1 : w/ Theft Det err ent Syst em
D. C. C
2A 4
2I 1
32
1W140A ALTR
6IG
IE1 4
7. 5A IG1
71C
1D 2
VGR9
IG6
UP DOWN411
IG3 3IE1
PB5
ECUBE E
5IC31D 9
1G 10
BR W- L P
P
GWBack Door Key Lock
and Unlock SW
< 19- 3> < 19- 4>
123
BRMPX1 MPX2
BR
A 1 A 2
22 24B 1 B 2MP D 1 MP D 2 11
4
12 IL2G
(
*4)
(
*3) V
(
*3) G
R
13E
12 3J
G
31
MPX13H 5V
(
*1)
SB(
*2)
(
*2) B LG BR
BR * 3 : w/ Navigation Sy st em
* 4 : w/o Navigation System
ST1
IG EIG1 GND5
210
67
BRB
7. 5A ECU- B
A u tom a tic
Glare- Resistant
EC M irror
18 29
8IE1
GND1
W- B
74L
W- B
F 7I15J17
O 5
I17A1 7
S3 0(
A)
, S31(
B)
O 3
P 5
B 9(
A)
, B10(
B)
E 6
S20 T 4 G 5
A10(
A)
, A11(
B)
C11(
A)
, C12(
B)
A / C Co nt r ol As se mbl y
Air bag Sens or As sembly
Body ECU Combination Meter
Engine Contr ol Module
Fus ible Link Block
Gateway ECU
Ignition SW
Inner MirrorJunct ion
Connect or
Option Connec tor 1
Overhead J/B
Power Window Mast er SW
with ECU
Sliding Roof Control ECUShor t Connec tor Theft Deterrent ECU
Page 2301 of 2572

2005 HIGHLANDER (EWD592U)
M OVERALL ELECTRICAL WIRING DIAGRAM
34
2 1
21 HIGHLANDER
1G 11
30A
POWER
11A140A ALT1 220 IA1
LG
Fro nt Re ar Up Do wn Fro nt Re ar Up Do wn
1 2
MY
LL
961
1 2
M
G
BB
10 5
2 1
M
BR
PP
32
2 1
M
W
VV
78
Left Center Pillar
BA
Front Rear
4
23
14
2 1
M
Y
WW
Power Seat (
Driver' s S eat)
Power Source
2
1BW O RLG
W- B W- B
Batt ery FL MAIN
3. 0WCA
BB BB
LG O
AB AB
AA
W- B
1D 13O
41
96
2 1
M
Y
LL LG
32
2 1
M
BR
PP
1IO1
CA
BB
AB
AA
BBRight Center Pillar
GR
W- B W- B OB
E
Rear
Rear Front
Front
RCLF SL DFSlide Reclining
RCLR SLDR
Power Seat (
Front Passenger' s Seat)
AB
W- B
5
LDWN LUP RCLR RCLF FDWN FUP SLDR SLDFB
E
F 7P15 J21(
A)
, J22(
B)
J21(
A)
, J22(
B) J23(
A)
, J24(
B)
P16P24
J23(
A)
, J24(
B)
Fusible Link
BlockJunct ion
Connect or
Junc tion
Connec tor Junc tion
Connec tor J unc tion
Connec tor
Power Seat Contr ol SW
(
Driver ' s Seat Control)Power Seat Contr ol SW
(
Dr iv er ' s Seat Lumbar Suppor t Control)
Power Seat Motor
(
Driver' s Seat Lumbar Support Contr ol)
Power Seat Mot or
(
Driver' s Seat Reclining Control)
Power Seat Mot or
(
Driver' s Seat Slide Control)
Power Seat Contr ol SW
(
Front Pas senger' s Seat
Control)
Power Seat Mot or
(
Driv er' s Seat Fr ont Tilt Control) Power Seat Mot or
(
Driv er' s Seat Lif ter Cont rol) Power Seat Motor
(
Fr ont Pass enger ' s Seat Rec lining Contr ol)
Power Seat Motor
(
Fr ont Pass enger ' s Seat Slide Contr ol) P2 7
P2 8
P1 8
P26
P20
P25
P21
Page 2302 of 2572

2005 HIGHLANDER (EWD592U)
M
1
234
22 HIGHLANDER
2ACC
IG1 AM1 4
140A
ALT 12I
20A TOWI NG
1C 7G
1C 6
3
40A AM1
2F 1
7. 5A IG1
W
B
WW
2
1
Bat tery FL MAIN
3. 0W2
151H
V
81F
15 A SEAT HT R
1A 1
2 1
3 5 11
11
4L 9
4L 7
ICRi g ht Co wl S i de P a nel
BBRi g ht Ce nt e r
Pillar 1BM16 4 7BM1 10 IP14IF1
3K 63K71IF1
5IA2
6 4
BALeft Center
Pillar 3F 13
IBRight Ins tr ument
Panel Br ac e 46 64Power Source Seat Heater Trailer Towing
339IC3
12 IA2
BCLeft Side of
Rear Cr os s Member
Tur n Signal Flas her
<8- 2>
B5261 810439
3124 LL
W
G
G- RG
W- B W- BW- B W- B B R R W- B W- BRRP W-B W-B
W- BW- B W- BWRY L
BR
Y
G
O V G- R
WWTAIL Fu se
<7- 4> St op Light SW
<9- 3>
+B RT LT TAIL STP
GND LT/ S RT/ S TL
GND LT/ S RT/ S TL RH EIG IG
ELH
SEAT HEATER
Re la y
AB
AA
BW- B
BW- B
ST1* 1 : w/ Power Seat (
Front Passenger' s Seat)
* 2 : w/o Power Seat (
Fr ont Pass enger ' s Seat)
AB
AA BA
CB
RB W-B W-B
(
*1)
(
*2)(
*2) (
*1)(
*1)
(
*2)(
*2) (
*1)
BA
CB I15
F 7S 3 S 4
T 9
S25
J21(
A)
, J22(
B) J21(
A)
, J22(
B)
J23(
A)
, J24(
B)
J23(
A)
, J24(
B)
S26
T1 0
J12
Fus ible Link BlockIgnition SW
Junction
Connector
Junction
Connector Junction
Connector
Junct ion
Connect orJunc tion
Connec tor
Seat Heat er
SW LH Seat Heat er
SW RHSeat Heater
LH
Seat Heat er RH Towing Conv er ter
Trailer Hitch
Page 2303 of 2572
2005 HIGHLANDER (EWD592U)
M OVERALL ELECTRICAL WIRING DIAGRAM
34
2 1
23 HIGHLANDER
61C
40A
AM1
1A 1
140A ALT
1C 7
25A
WI PE R
1B 21E51B320A
WASHER
Left Cowl Side Panel
IA 1D 141B 8MOFF
HI GHLOWINT
Was her+B B1 IN1 IN2 WF EW +2 817716
+S +111
INT TI ME
2 Wiper RelayIK3 1
Front W iper and W asher Power Source
G
L- W
LG
WBWW- B W- BW- B
W L- W
B1 2
5 23 14
Bat tery
Front Wiper and Was her SW
1 2
Rear W iper and W asher
FL MAIN
3. 0W1E 615A
RR WI P
IC210
IC29
IC211 L
LG
RG
B
L
4
1EW- B5
4C 6
4MW- BM
2 1
9IA2
6BG2
1
10 BG3 5 BG3
19 IA1 18 IA1 INT
ON
WASH2
13 212
10 WASH1
OFF11 IK3
Y
V
IALeft Cowl Side Panel 4C 5
4M 6
1E 4
1D 14W- B W- B W- B
32GRB
LGL
GRP
P GR GR GR L
Rear Wiper
and Was her
2ACC
IG1 AM1 4
GR
L- BM
2 1 L- W ST1
I15
F1 4 R21
R1 8
F 7
F 6
C14C14
EWRC1R+1R
Combination SWCombinat ion SW
Fr ont Wiper Motor Fusible
Link BlockFr ont Washer Motor Ignition SW
Re ar Wi p er Mot o r Rear Was her Motor
LS C1 +B 1 2
Diode
(
Rear Wiper) D16
YGR
GR
Y
Page 2304 of 2572
2005 HIGHLANDER (EWD592U)
M
34
2 1
24 HIGHLANDER
1C 6
40A
AM1
11A140A ALT11C 7
10A
ECU- I G
1K 9
Right Ins tr ument Panel Br ace
IB 3F 133D 93IF1
3 4
IC4
Ri g ht Co wl S i de P an elIF31
Stop Light SW
<9- 2>1C 2
7. 5A
RAD NO. 2
1J 6
3A 8
3E 9 3K 5
VOper at ion SWSelect
SW
2IF2 1IF2
6IB2 5IB2 13IB2
6IN2 5IN2 13IN29IF2
MM MM3E 11
3F 13
IBRight Instrument
Panel Brace
Power Source
S h ift L oc kR e mo te C o ntrol M irro r
65 46 58
1 5
34252 43 6 7 L
GL
V
SB L
W- B
W- BY
R
WBWW V
W- BP
W- B BW- B GO
W BROOB W- B
L
GP LGGP LGW- B
W
W
Shift Lock
Co nt r ol S W Shift Lock
Solenoid
1 2
BatteryHL V LHR V R
Ri g ht
LeftUp Do wnUp /
Left Down/
Right
STP KL S+ E IG ACC
SLS+
SLS-
P2
P1
P
W
O 2
FL MAIN
3. 0W3A 1
3K 4
R
4G 8
4L 73IF2 4IF2
4I 74K 7
6
4K
L
2ACC
IG1 AM13
4
M+ E B ST1
I15
R 5
R20 R19
K 4
S 5
F 7
Fus ible Link
Bl oc kIgnition SW
Ke y I nt e rl oc k
Solenoid
Remote Control Mirror SW
Remote Control Mirror LH Remote Control Mirror RH Shift Lock ECU