Page 2265 of 2572
2005 HIGHLANDER (EWD592U)
M OVERALL ELECTRICAL WIRING DIAGRAM
1920
18 17
2 HIGHLANDER (
Cont' d)
Cruise Control (
3M Z- FE)
4L A
A
Sk id Cont rol ECU with Ac tuator
<15- 6><15- 12>
W
B
W14
PPR
4L 6 12 4A 7
GF
B RSIL
11
OCA NL
6 CA NH
12TS
21 IL2GR
W- B
R C
D
SC BATTC 51613
4F 5
R W
OB
VV
B
B 15WFSE
E4G 1TAC
9
B
B
B
Sk i d Con t ro l ECU wi t h Ac t u at o r
<15- 6>
54I
4M 14G5
1E 3
1L 3
BR W
A
7 4N 14L
ICRight Cowl Side Panel
W- B
4H 5W- B
W- B
64C4CG
V O W
A
Occupant Classification ECU
<16- 12>
V BR
PCombination Meter
<31- 3>
Airbag Sensor
Assembly< 16- 9> V
Tr ansponder Key Comput er
<4- 3>
1E 12Body ECU
<18- 3> O W- B
J16D 3
Data Link Connect or 3
Junction
Connector
Page 2266 of 2572
2005 HIGHLANDER (EWD592U)
MEMO
Page 2267 of 2572

2005 HIGHLANDER (EWD592U)
M OVERALL ELECTRICAL WIRING DIAGRAM
1
234
3 HIGHLANDER(
Cont. next page)
FL MAIN
3. 0W
Bat tery10W2
140A ALT30A AM2
13
Engine Control (
2AZ- FE)
1IC110A
ET CS 2
22I 1
1C 1
1G 1
1C 4
15A
IG2
1G 910A
IGN
2 1
2 1
2 1
2 1 5 EB1
RRR
1G 63 2 151
11 4F 1
5 4
M
BC Left Side of
Rear Cross Member12 1
3 5
2F 42B82D3 2B 5
EH A 13 IK3A
B
C
K
L
M
N
O
L- Y
B W W
Y
1 2GR
RRR
L Y B
J W
Y BR L W- B W- B
EFI
Relay
P- L W- BWY
B
Y W
W
B- R
CIRCUIT OPENING
Relay
W
B
Y
L 76
B
8IA2
B
Power Source
R R W
R W
6IC3
LG
2B 7B- W
2IC2
B
42B
10A
EFI NO. 2
2
2 1 2E B- W
W
F
B- R
G
4M 4 14E
P
WP
D
EB11
B- W
7. 5A OBD
1E 10
1A 1W
EB13
B- W
2ACC
IG1
ST1
IG2
ST2 AM1 4
AM2
1C 7
10A HEATER
1K 13G
73C
3A 4 G
B 61C
40A AM1
W
W
H P
CRUI SE Malf unction
Indicator Lamp11 A 4 B1A 13A
10 IL2 3B 12
3K 2I SB 9IL1
IB Ri g ht I ns t r u me nt
Pa ne l Bra ce
BR SB
PRL
Under the Left
He ad li g ht
P
W 1 2
4IC1
20A
EFI NO. 1 W
F 7I15
I11
I10
I 9
I 8 C1 1(
A)
, C12(
B)
F12
J 2
Combinat ion Meter
Fusible Link Block
Fuel Pump
Inj ector No. 1 Inj ector No. 2 Inj ector No. 3 Inj ector No. 4
Ignition SW
J unc tion
Connec tor
Page 2268 of 2572

2005 HIGHLANDER (EWD592U)
M
2
B- R
W WW
FW
1
78
6 5
(
Cont. next page)
3 HIGHLANDER (
Cont' d)
A
B
Y W
W
B- R
W
B
Y
L
E ngine C ontrol (
2AZ- FE)
A
B
C
J
K
L
M
N
O4E E32E1E 8A 10A10 IK2
1A 6BIK2 B- W
E
B- WBATT DP
W
ABR
3
Y
B WB YL
2 1
34 E 11B- R G
A
B
C
C 21RL +B +B2 +BM
Air Conditioning Sys tem
<34- 8><35- 8>B 2E 19W
B- R
B- R
W
24 E
W- R
8E
R- W
9E
P10 E
Y- B11 E
L- Y
Ignition Coil and Igniters
<1- 3><1- 4>
Ignition Coil and Igniters
<1- 3>
MREL FC #4 #3 #2 #1 ACMG IGF1 IGT1 IGT2 IGT3 IGT4PRG
Charging Sy stem
<1- 5>
B- R
B- R
G
R- LPSW
C 10
1
G
30 E
VG29 E
EVG20 E
THA 3 1
2
R
4 5L- WL- B
2 1
E 5
18 E 6 4
21 E 31 C 3 C 22
17 C 3E2 M- M+ VTA2 VAT1 VC
(
Shielded)
GE01
BR BR G- B
VC
WB B- R
VTA1B- WYY
VTA2 M+ M- THWBR G
E02 E0 1 MOPS
W- BElec tr onic ally Controlled
Trans mis sion and A/T
Indicator System< 14- 2>
W- B
Y- BE 6 E 7
Left Side of
Cylinder BlockEF C 22
1C
FAN NO. 3 Relay
<33- 2> R- WCF
19 8STP
B
L- WE 14FAN NO. 2 Relay
<33- 3>FAN
2 1 OC 1+
C 16 15 COC 1 -
G- R G- W
B- R B- R
27 E 4 A 21 A3IO1 4IO112 BJ1 13 BJ1 BJ1
5IO118 14 BJ1
IO1 16
13 I M17IO1BJ1 164
12 IM1 15 IO1BJ1 1728139
PPMP MPMP VPMP Y
L BRB
L BRR WY RV
Y
WL
LG
Y- G SB
BR
P
BR
Elec tronic ally Cont rolled
Transmis sion and A/T
Indicator System< 14- 4>D 10 B 17 B
Y
Combination Meter
< 31- 4>SPD 9IL2Y
14 I M1
SB
I11 A
SBW5A
5B
E 28
BRE2
ST ARTER F us e
<1- 2>NSWB- RE 16
Park/Neutral Position SW
<1- 2>STABE 17 BR P
H
9A
IGSW 12 B
ST1-E
E EE
2
1
Stop Light
System< 9- 1> PP VPP
3
4D
E W- B
GR
GR6
ME01
W- BC 4
W- B
O 1
P 2
C 2
C17 T1 3
E 2
E 5(
A)
, E 6(
B)
, E 7(
E)
, E 8(
D)
, E 9(
C)
S2 8(
A)
, S29(
B)
M 1
V 4
S1 5
J 6
FAN NO. 1 Relay
<33- 3>
C a ms h a f t T i mi n g
Control Valve
Charcoal Canister Assembly
Engine Coolant
Temp. Sens or
Engine Cont rol Module
Mass Air Flow MeterOil Pressure SW
Power St eer ing Oil
Pressure SW
St op Light SWShort Connect or
Throttle Control Motor
VSV (
EVAP)
Junct ion
Connect or
VG E2G THAEKR EKN EKL EKQ EKS EKP
+B E2EKM Throttle Pos ition Sens or
Page 2269 of 2572

2005 HIGHLANDER (EWD592U)
M OVERALL ELECTRICAL WIRING DIAGRAM
2
1112
10 9
(
Cont. next page)
3 HIGHLANDER (
Cont' d)
W
B- R
B- R A
B
C
21 D 29 D24 13
BRB
5D 23D A20 13 24
31 D
B- WBRY
GRB- R
YB
C
HT 1B OX1 B HA 1 A A1 A + A 1 A- TCW- B
R
O
E ngine C ontrol (
2AZ- FE)
(
Shielded)
(
Shielded)
W
A
IM1
R- Y
IM1 3G
O1 B- IM1 6R
2D
W
25 C C24 27 C
R GL Y
(
Shielded) (
Shielded)NE+ NE- G2+
G
26 B 27 BIMO IMI
V
B
NC- NC+ NT- NT +
Electronically Controlled
Tr ans mis sion and A/T Indicator
Sy st em< 14- 5>
D 34 D 26 D 35 D 275IM1
1 2
2 1A (
Shielded) (
Shielded)
(
Shielded)
28 D
EE Intake Side of
Cylinder Block7C 7D 5A1CIM14
A A
A
18 A
E1SI L
B
(
Shielded) BR
W
W- B W- BB
FKNK1 E03 E04 TACH MPX1MPX2(
Shielded)R
R
BRBR1 AA
VWFSEA 19
KNK1
D
R Y GB
24 AENG+
V
Skid Control ECU with Act uator
< 15- 5>B
-SET +RES ON- OFF
Cruise Contr ol SW
LG
2 5 24 BCCS NEO
A 17 TRC-
A 31 TRC+
A 25 ENG-
A 30B
26 A 22 A 28 A 27 A 23 A 29 A
VCPA VPA EPA VCP2 VPA2 EPA2 EPA2 VPA2 VCP2 EPA VPA VCPA
231564
BRWL R B G Sk i d Con t ro l ECU
with Actuator
<15- 6>
BV V
(
Shielded)
D O
V
E
15 A
W- BEOM
G
H W- BB
Cruise Control (
2AZ- FE)
29 B 18 B
Multiplex
C ommun i cat i on
System (
BEAN Bus)
<20- 3>
D
E
GELS2
A 12Voltage Inv ert er
< 27- 4>
W- B
GRGR
(
Shielded)
F
A
A
CA NCE L17 IM1 BR
BR
O
BR O
R
1
4
(
*1)
* 1 : w/ Rear Seat Entertainment System
H10A 6 C 7
E 5(
A)
, E 6(
B)
, E 7(
E)
, E 8(
D)
, E 9(
C)
K 1
C16 J16
A27 J 7
C 1
Air Fuel Ratio Sens or
(
Bank 1 Sens or 1)
Ac cel Pos ition Sens or
Ca ms ha f t
Position Sensor
Cr ank shaft
Position SensorCombination SW
Engine Contr ol Module
Heat ed Oxy gen Sens or
(
Bank 1 Sens or 2)
Junct ion
Connect or
Junc tion
Connec tor
Knoc k Sensor
(
Bank 1)
Trans ponder Key Computer
<4- 3>
HT OX
HT AF+ +B E
+B AF-
Page 2270 of 2572
2005 HIGHLANDER (EWD592U)
M
4I 5A14
1516
14 13
3 HIGHLANDER (
Cont' d)
W
R
V
B A
C
E
G
Cruise Control (
2AZ- FE)
SC TC BAT
SIL CG
7 4 51316
4C 6 4L 11
4N 1 4F 54L7
ICRight Cowl Side PanelR O WP
W- B
W- B W- B
B GR O
Combination Meter
< 31- 3>V
15
WFSE DO
21 IL2
W- B
4G 1B
BW- B
B9 TAC
4A 12 6 4LCA NL
A A
BR P R
W
B
P 6
CA NH12
Occupant Classification
ECU< 16- 12>
Skid Control ECU
with Actuator
< 15- 6>
TSW
Skid Control ECU
wit h Actuat or
< 15- 6> < 15- 12>
W- B
H4H 5
W- B
4G 54M1V
Transponder Key
Computer < 4- 3>
31E
1E 12
Body ECU
< 18- 3> BR O
D DO
1L 3Airbag Sensor
Assembly< 16- 9> W
FR
BF BBRight Center Pillar A A 15 BJ1
W- B W- B
W- B W- BA
Near t he Rear
Si d e Mar ker
Light RH
J19
J16
D 3
J16
Data Link Connector 3
Junction
Connector
J unc tion
Connec torJunct ion
Connect or
Page 2271 of 2572
2005 HIGHLANDER (EWD592U)
M OVERALL ELECTRICAL WIRING DIAGRAM
1
234
4 HIGHLANDER
FL MAIN
3. 0W
Batt ery 10W 30A AM21 31IC1GR
1C 1L- Y Y
7IG2
ST26 AM2
D. C. C
7. 5A
ECU- B 10A
IGN
1G 62A42I 1
Door Courtesy SW Front LH
<10- 5>
Un lo ck War n i ng SW
<26- 2> B
G4 CTY
10KSW TXCT AGND CODE 12 13 11
WR GR
GND
14W- BV
9D EFI I
V
B
6 EF I OVC5 8
B
5 TXCT VC5
17GND
4 CODE
P1+B
1G 101D 9BR PE E
5IC34K 8
4N 14L7
ICRi g ht Co wl S i de P a nel IG
2
PE
EPW
14E
44M
W- L
WW- L W- B W- B
E ngine Immobilizer S ystem Power Source
W WData Link Connect or 3
<2- 18><3- 14>
14 IF3IND
WR3Theft Deterrent Indicator Light
<19- 3>
7
F 7I15T14
J 6
J17
T 7
Fus ible Link BlockIgnition SW
Junc tion
Connec tor
Junc tion
Connec tor
Tr ans ponder Key Amplif ier
Trans ponder Key Computer
Engine Control Module
<2- 13><3- 9>
Page 2272 of 2572

2005 HIGHLANDER (EWD592U)
M
1
234
5 HIGHLANDER
Power Source Headlight (
w/ Daytime Running Light)
40A
MAIN2G 4
2I 13 4
2 12B 1
10A H- LP LH UPR 10A H- LP RH UPR
7. 5A
DRL
2F 22F533
1 2
2 1
3 5
4 33
3332 1
5 1
2 3 33
33
EB Right Fr ont
Fender Apron15A
H- L P
LH LWR15A
H- LP
RH LWR 2
22
1 2
1 2
EG Under the Left
He ad li g htEARight Fr ont
Fender Apron7IC3
7IF3
AA9IF34A 134F 64N2 14 B14 D 2 1
5 333
33
Dimmer SW Light
Cont rol SW
Fl a shHi ghLow HeadTa i l OFF15 B 17 B 4IK3 16IK3
3C 2C 2
1
Battery 1 3
FL MAIN
3. 0W
HEAD LAMP RelayDRL NO. 3
Relay DRL NO. 4
Relay
11
22
16 B
19 AHRLY DRL
HF HEAD PKB HUDRL NO. 2
Re l ay
R- BP B
W R
W R- W L- Y L- WR- W R- W
W- BR- L W- B
W- B W- B
W- B W- B
R- L R- WR- YBG BR
W
Y
Y
O LG R
7813
W- B W- B B R- B R- BP
L- R RB
B
B 2ACC
IG1 AM1 4
5A
IG
BR3A 10
3B 51K 101C 7GR
1A 1
40A AM1
1C 6B W G
G
2
W- B
BR- B
16
W- BIA Left Cowl Side Panel7DGND1 GND2
A 2
3B 3
13 3F 4N 1 11 4H
4L 7
IC Right
Cowl Side
PanelIBRi g ht
Ins trument
Panel
Br ac e
W- B
W- BW- B
W- B
W- B
140A
ALT7. 5A
IG1
R- YR- Y
HU HL HF T H E L 12
21
L- W
R- W
ST 1
Park ing Br ake SW
<15- 5>
F 7
H 1
J 3
J 1
H 3 H 2 H 4Beam C1 1(
A)
, C12(
B)
C13B 9(
A)
, B10(
B)
, B11(
C)
, B12(
D)
Bo dy ECU
Combinat ion Meter
Combination SW Fus ible Link Block
Headlight LH (
High Beam) Headlight LH (
Low Beam)
Headlight RH (
High Beam) Headlight RH (
Low Beam)
Junc tion
Connec tor
Junction
Connector I gnit ion SW I15