Page 625 of 2572
2005 HIGHLANDER (EWD592U)
266
Navigation System
7. 5A IG1
1K 10
3D 13A 8
IB
LG SB WGR B W- B
W- B
BR
L W- B
14 7 5 12298
GND CG GTX+ GTX-IG ACC BATT
B 12 B11
7. 5A
RAD NO. 2
10A
ECU- IG
1K 31K9
A 12 A11 A103G 73A 1
+B1 ACC I G
TX3+ TX3 -
A 16 A7
4H 12
4M 9
1
OR LG
OBR
W GR
TC PKB G 5
D 3
V
13
TC
7. 5A
CRT
2
V
IK2 16
V
2
VVV
11 4D64H2A
10A DOME
3I 13A 10 IL211
83F 93FA A
6IL1
J17
3I 7
W
3E 33A 13 10 3I
GR
1J 6 IK3 123
3F 133G 653G
LV
BR
Y
P
IF3 4IF33
D D
O B P 3
J1 6LG
V G
V
411 MPD1 MPD2
V
G HAZA 8
R O
8
W
HAZ
T 83E 4
3B 9
IL2 20 Fr om Power Source System (
See Page 62)
M 3(
A)
, M 4(
B)
, M 5(
C)
Data Link
Connector 3 Gateway ECU
Ju nctio n
ConnectorJunction
Connector
Multi- Display
Parking Brake SW
Turn Signal
Flasher 1G 2
IM1 10
R2
1
A/T Indicator SW P 1R R
IM1 20
R- B L
L
Page 626 of 2572
2005 HIGHLANDER (EWD592U)
267
B 28 B27 B23 B26 B25 B24 A5A4 A 9 A 18 B6B8B1B3B7B2B10 B5 +B ACC VG SYNC VR B G R TX1- TX1+
VG SYNC VR B G R TX1- TX1+
A 3
IB B 13 B14 A25
(
*3)
Y
B
G
R
W
GR
W
SB BRWR
GB Y (
*3)
BR
SB Y BR
W- B W- B
GND1 TX+ TX- SPD
TX3 - TX3+
W
R29
W GR
W
A 21
LG
PBEWA 17 A5 A 2A11
10 IF3 IF320
4 3
2 1
F10
W- B
O G
B P
V R
W
AUO- AUO+ SPD GND
12
IP1 1IP111
O LG
17 183I 6
3F 133I 2IB1 7IB16
T11
O
W- B
* 1 : w/ Rear Entertainment System
* 2 : w/o Rear Entertainment System
GP
1J 3
1D 11
GR
910
O LG
TX- TX+
R22
(
*1)
(
*1) (
*2)
(
*2)
(
*1) (
*1)
V
G
V
GGR C 1
21
G
NTSC
NTS1
G
12 IP1
(
*1) (
*1)
C 4
20
R
SGD1
SGN1
R
2IP1
(
*1) (
*1)
C 5
19
(
*3)
SGND
SG3
(
*3)
13 IP1
(
*1) (
*1)
M 3(
A)
, M 4(
B)
, M 5(
C)N 3(
A)
, N 4(
B)
Front Door
Speaker LH Multi- DisplayNavigation ECU
Radio and Player Rear Seat Entertainment ECU
Tweeter LH
* 3 : Shielded
LGRGY
11 IF3
13 4K
64A 13C 13 3KRL
A 14
L
Page 627 of 2572
2005 HIGHLANDER (EWD592U)
268
Navigation System
WO
WO
63F 12 3K
S27
SP1 12
BR- R BR GR
15 IC4 18 IF3
3J 9
W
6B
IB A
5V
Speedometer
B 13 1
B 6
R
11 A
3B 12
3K 2
PB
73C 43A 13 1K 10A
HEATER
BR
V
GGR
G GR
V A
7V 2
LG
11K 10 1G IC3 57. 5A
ECU- B
2A 4BR W- L
BR
From Power Source System (
See Page 62)
N 3(
A)
, N 4(
B)
C11(
A)
, C12(
B)
Combination Meter Navigation ECU
Skid Control ECU
with Actuator
A 1A10 AUI+ AUI-
9 2
LG
R
FL+ FL-
S23IR1 10 IR120
Y
R- Y
Stereo Power
Amplifier
Page 628 of 2572
2005 HIGHLANDER (EWD592U)
269
B 29
W
E 6
MPX2
18
22 24 MPX1
G125 12 3J
IB2 1
IF3 5
A 10
B 9
VY O GR
IL2 1
GR
SB
SB BR
MPX2
R PBEW
BRY
BR
4A 3E 1
G
GR4F 7IB2 87 8
P 5
MPX2
MPX1
G GR
IL2A 9
B 2MPX-
MPX+
B 2 B 1
A 2 A 1 MPX1 6
A17MPX2 MPX1
V G
21 A 9 B
VC11(
A)
, C12(
B)
S30(
A)
, S31(
B)B 9(
A)
, B10(
B)
A10(
A)
, A11(
B)
A/C Control Assembly
Airbag Sensor Assembly
Body ECU
Combination Meter
Engine Contr ol Module
Power Window Master SW
with ECU Short Connector
Page 629 of 2572

2005 HIGHLANDER (EWD592U)
270
Navigation System
M3 (A) Multi-Display
(A)12-Ground : Always approx. 12 volts
(A) 11-Ground : Approx. 12 volts with ignition SW at ON or ST position
(A)10-Ground : Approx. 12 volts with ignition SW at ON or ACC position
(A) 3-Ground : Always continuity
N3 (A) Navigation ECU
(A)18-Ground : Approx. 12 volts with ignition SW at ON or ACC position
(A) 9-Ground : Always approx. 12 volts
(A)17-Ground : Always continuity
G5 Gateway ECU
2-Ground : Approx. 12 volts with ignition SW at ON or ST position
9-Ground : Approx. 12 volts with ignition SW at ON or ACC position
8-Ground : Always approx. 12 volts
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A10A42J1643R2243
A11B42J1743R2945
A1742M3A43S2345
B9A42M4B43S2739 (3MZ-FE)
B10B42M5C43S2741 (2AZ-FE)
C11A42N3A43S30A43
C12B42N4B43S31B43
D342P139 (3MZ-FE)T843
E642P141 (2AZ-FE)T1145
F1044P343
G543P544
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
222Engine Room R/B (Engine Compartment Left)
Service Hints
Page 630 of 2572