TOYOTA HIGHLANDER 2001 Service Repair Manual

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262
Multiplex Communication System - CAN
7. 5A
ECU- B
2A 4
10 1G
BF 15
29101 IG1S14
Y 1CANL
W- B
W
L
J19
W- BOL
CANHIG
ESS CANL CANHGND 91D
W
B
4N 14C 3
IC
W- B
BR
A J16 10 1D10A
ECU- IG
W- L P
3BAT
Y W
E
21 10
19 8 22 11E
J17P
4J 44C2
4C 11IO2 3V
3 2
W
B
W- B G
W
IO2 12 IO213
B
W
920
Y
4L 7
W- B W- B
W- BV
IC3 5
BBA
W- B
W- B
IC4 12 IC4 13
25 11 14 6
W
B
CANL CANH CANHCANL
S27 D 3
A From Power Source System (
See Page 62)
Data Link Connector 3Junction
Connector
Junction
Connector
Junction
Connector Steering Sensor
Skid Control ECU
with Actuator
Yaw Rate Sensor

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Multiplex communication system (CAN) uses a serial communication protocol and communicates with a differential voltage.
In this network system, TERMINALS CANH and CANL are used for communication between the ECUs and sensors, and
excellent data communication speed and communication error detecting facility are provided. This system is working for the
following system:
*VSC
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
D342J1944S2741 (2AZ-FE)
J1643S1443Y145
J1743S2739 (3MZ-FE)
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
222Engine Room R/B (Engine Compartment Left)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1D29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1G29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2A27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
4C33
4JCowl Wire and Passenger Side J/B (Right Side of Grove Box)4L32Cowl Wire and Passenger Side J/B (Right Side of Grove Box)
4N
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IC352Engine Room Main Wire and Cowl Wire (Left Cowl Side Panel)IC452Engine Room Main Wire and Cowl Wire (Left Cowl Side Panel)
IO254Cowl Wire and Floor Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IC52Right Cowl Side Panel
BB56Right Center Pillar
BF56Near the Rear Side Marker Light RH
System Outline

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Automatic Glare-Resistant EC Mirror
7. 5A
IG1
1D 2
IE1 4
IE1 8
4D 5
1E 44M 64L74N1
1D 14
IA IC
V GR
B
BR W- B W- B W- B W- B
W- B
W- B
GND5 IG1 IG
GND
IG E 1102 9
76 O 5
I17 From Power Source System (
See Page 62)
Inner Mirr or Overhead J/B

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O5 Overhead J/B
9, 10-Ground : Approx. 12 volts with ignition SW at ON or ST position
1, 2-Ground : Always continuity
I17 Inner Mirror
7-Ground : Approx. 12 volts with ignition SW at ON or ST position
6-Ground : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
I1744O544
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1D29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1E29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
4D33
4LCowl Wire and Passenger Side J/B (Right Side of Grove Box)4M32Cowl Wire and Passenger Side J/B (Right Side of Grove Box)
4N
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IE152Roof Wire and Cowl Wire (Near the Bottom of Left Front Pillar)
: GROUND POINTS
CodeSee PageGround Points Location
IA52Left Cowl Side Panel
IC52Right Cowl Side Panel
Service Hints

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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

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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

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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

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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

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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

2005 HIGHLANDER (EWD592U)
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: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1D29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1G29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1J28Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1K28Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
2A27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3A
3B
3C303D30
3EInstrument Panel Wire and Center J/B (Behind the Instrument Panel Center)3FInstrument Panel Wire and Center J/B (Behind the Instrument Panel Center)
3G
3I313J31
3K
4A
4D334F33
Cowl Wire and Passenger Side J/B (Right Side of Grove Box)4HCowl Wire and Passenger Side J/B (Right Side of Grove Box)
4K324M32
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IB152Front Door LH Wire and Cowl Wire (Left Kick Panel)IB252Front Door LH Wire and Cowl Wire (Left Kick Panel)
IC352Engine Room Main Wire and Cowl Wire (Left Cowl Side Panel)IC452Engine Room Main Wire and Cowl Wire (Left Cowl Side Panel)
IF352Instrument Panel Wire and Cowl Wire (Right Side of Instrument Panel J/B)
IK254Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)IK354Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)
IL154Instrument Panel Wire and Cowl Wire (Upper Side of Passenger Side J/B)IL254Instrument Panel Wire and Cowl Wire (Upper Side of Passenger Side J/B)
IM154Engine Wire and Cowl Wire (Right Kick Panel)
IP154Instrument Panel Wire and Floor Wire (Left Side of Passenger Side J/B)
IR154Instrument Panel Wire and Floor Wire (Under the Shift Lever)
: GROUND POINTS
CodeSee PageGround Points Location
IB52Right Instrument Panel Brace