TOYOTA HIGHLANDER 2001 Service Repair Manual

2005 HIGHLANDER (EWD592U)
252
Rear Window Defogger
2H 22A8
2C 12C3 2F4
EH AIC2 18 IK317
IA1 1
BG1 2IL2 16
118
A 1
B 1
BE AIK2 7A A10A
HEATER
1G 8
G B
GR- LB- RY Y
J 5
P
SB LY Y
J 2 J14
B W- BN 2
W- B
W- B
Rear Window
Defogger SWA10 RR
DEF
Relay
321 5
4
B 9B- R
Y
RDFG
30A RR DEF
5F 7From Power Source System (
See Page 62)
R16(
A)
, R17(
B)A/C Control Assembly Fusible Link Block
Junction
ConnectorJunction
Connector
Junction
Connector
Noise Filter
(
Rear Window Defogger)
Rear Window
Defogger

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RR DEF Relay
5-3 : Closed with the ignition SW at ON position and rear window defogger SW on
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A1042J241 (2AZ-FE)R16B45
F738 (3MZ-FE)J543R17A45F740 (2AZ-FE)J1444
J239 (3MZ-FE)N244
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1G29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2A
2C27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)2F27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
2H
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IA152Cowl Wire and Floor No.2 Wire (Left Kick Panel)
IC252Engine Room Main Wire and Cowl Wire (Left Cowl Side Panel)
IK254Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)IK354Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)
IL254Instrument Panel Wire and Cowl Wire (Upper Side of Passenger Side J/B)
BG156Back Door No.1 Wire and Floor No.2 Wire (Rear Left of the Roof)
: GROUND POINTS
CodeSee PageGround Points Location
EH48 (3MZ-FE)Under the Left HeadlightEH50 (2AZ-FE)Under the Left Headlight
BE56Left Side of Back Door
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
B956Floor No.2 Wire
Service Hints

2005 HIGHLANDER (EWD592U)
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Mirror Heater and Front Deicer
7. 5A
IG1
1K 13 1F 220A
FR DEF
1F 3
52 31
B
GR
11
113A 4
3J 7B
4F 3
V
4K 3 4K 4 4L 12
IN1 1IB11IK218
B B
G G G
1 3 7
82
B W- B
1B 9
1D 14
W- B
IA 4L 8
4N 1
W- B
IB1 2 7
8
B W- B
4L 10
4L 7
W- B
IN1 2
IC
G W- B
W- B
W- BIF2 8
2 10
11
3J 6
3F 13
W- B
IB
W- BPG
G
BR BR
DEICER
Relay
FDEF I G+
GND
F 5
E137. 5A
IG1 7. 5A
IG1 7. 5A
IG1 7. 5A
IG1 7. 5A
IG1 7. 5A
IG1 7. 5A
IG1 7. 5A
IG110A
HEATER From Power Source System (
See Page 62)
Front Wiper Deicer
A/C Control Assembly A10 Remote Control
Mirror LH R19 Remote Control
Mirror RH R20
Heater Heater
Front Wiper Deicer
and Mirror Heater SW

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A10 A/C Control Assembly
2-Ground : Approx. 12 volts with the ignition SW at ON position
11-Ground : Always continuity
DEICER Relay
5-3 : Closed with the ignition SW at ON position and front wiper deicer and mirror heater SW at ON position
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A1042F540 (2AZ-FE)R2045
F538 (3MZ-FE)R1945
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
124R/B No.1 (Lower Finish Panel)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1B29Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1D29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1F29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1K28Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3A303F30Instrument Panel Wire and Center J/B (Behind the Instrument Panel Center)
3J31
()
4F33
4KCowl 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)
IB152Front Door LH Wire and Cowl Wire (Left Kick Panel)
IF252Instrument Panel Wire and Cowl Wire (Right Side of Instrument Panel J/B)
IK254Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)
IN154Front Door RH Wire and Cowl Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IA52Left Cowl Side Panel
IB52Right Instrument Panel Brace
IC52Right Cowl Side Panel
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E1348 (3MZ-FE)Engine Room Main WireE1350 (2AZ-FE)Engine Room Main Wire
Service Hints

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Seat Heater
1H 515A
SEAT HTR
1F 8
23 15
V
11
1
IP1 10
R
BM1 7
R(
*2)
6 4
B(
*2)
W- B(
*2)
BM1 1
BB 4L 9
4L 7
IC3K 63K7
3F 13
IB
W- B
W- B W- B W- BW- B
IF1 1
R
IA2 5
R P
6 4
B W- B
BA W G
S 4 S 3
S26
S25 I 4
46 3
E RH IG
64 3
LH E IG W * 1 : w/ Power Seat(
Front Passenger' s Seat)
* 2 : w/o Power Seat(
Front Passenger ' s Seat)
1
SEAT HEATER
Relay7. 5A
IG1
A B
B C
B A
A A
B(
*1)
R(
*1) W- B(
*2)
W- B(
*1)
W- B(
*1)
L
A B
B C
B A
A A IF14
W
W- B
From Power Source System (
See Page 62)
J21(
A)
, J22(
B)
J21(
A)
, J22(
B) J23(
A)
, J24(
B)
J23(
A)
, J24(
B)Junction
Connector
Junction
Connector Junction
Connector
Juncti on
ConnectorSeat Heater SW
LH Seat Heater SW
RH
Seat Heater LH Seat Heater RH

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SEAT HEATER Relay
5-3 : Closed with the ignition SW at ON position
S3 Seat Heater SW LH
3-Ground : Approx. 12 volts with the ignition SW at ON position
6-Ground : Always continuity
S4 Seat Heater SW RH
3-Ground : Approx. 12 volts with the ignition SW at ON position
6-Ground : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
J21A46 (w/ Power Seat)J24B46 (w/ Power Seat)S2546 (w/ Power Seat)
J22B46 (w/ Power Seat)S343S2646 (w/ Power Seat)
J23A46 (w/ Power Seat)S443S2647 (w/o Power Seat)
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
124R/B No.1 (Lower Finish Panel)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1F29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1H29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
3F30Instrument Panel Wire and Center J/B (Behind the Instrument Panel Center)3K31Instrument Panel Wire and Center J/B (Behind the Instrument Panel Center)
4L32Cowl Wire and Passenger Side J/B (Right Side of Grove Box)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IA252Cowl Wire and Floor No.2 Wire (Left Kick Panel)
IF152Instrument Panel Wire and Cowl Wire (Right Side of Instrument Panel J/B)
IP154Instrument Panel Wire and Floor Wire (Left Side of Passenger Side J/B)
BM158Floor Wire and Front Seat RH Wire (Under the Front Passenger's Seat)
: GROUND POINTS
CodeSee PageGround Points Location
IB52Right Instrument Panel Brace
IC52Right Cowl Side Panel
BA56Left Center Pillar
BB56Right Center Pillar
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
I454Instrument Panel Wire
Service Hints

2005 HIGHLANDER (EWD592U)
258
Multiplex Communication System - BEAN Bus
MPX1 MPX1
MPX1 IF3 5
IB2 1A 10B 6
MPX2 S20
8 7 10
MPX2
P 5
4F 7
Y GR Y O
GR
4O 4
34A 5IL2 12MPX-
B 2A 9
MPX+ MPX+
A 21B 9
MPX-
GG W
SB
MPX2
MPX1IL21
I 8
GR GR
GR Y
O 3* 2 : w/o Theft Deterr ent System * 1 : w/ Theft Deterrent System
* 3 : w/ Navigation System
* 4 : w/o Navigation System
3E 1
3J 12
Y
3H 5
MPX1 31
V
T 4
IB2 8
VSB(
*2)
MPD2
MPD1
G 5
11
4 V
G (
*3)
(
*3)
(
*4)B 1B2
A 1A2
MPX1 24
MPX2 22
BR BR
R
A17BR
R
BR
(
*1)
IE1 618 29
E 6
C11(
A)
, C12(
B) A10(
A)
, A11(
B) S30(
A)
, S31(
B) B 9(
A)
, B10(
B)
A/C Control Assembly
Airbag Sensor
Assembly
Body ECU
Combination Meter
Engine Control
Module
Gat ew ay ECU
Option Connector 1
Power Window Master SW
with ECU
Sliding Roof
Control ECU
Short Connector
Theft Deterr ent ECU

2005 HIGHLANDER (EWD592U)
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The multiplex communication system communicates among the A/C control assembly, body ECU, combination meter,
engine control module, option connector 1, power window master SW with ECU, sliding roof control ECU and theft deterrent
ECU and controls the following systems according to the signals from respective sensors or switches.
Multiplex Communication System Includes Following Systems
* Air Conditioning (Automatic A/C)
* Air Conditioning (Manual A/C)
* Automatic Light Control
* Combination Meter
* Door Lock Control
* Electronically Controlled Transmission and A/T Indicator (3MZ-FE)
* Electronically Controlled Transmission and A/T Indicator (2AZ-FE)
* Engine Control (3MZ-FE)
* Engine Control (2AZ-FE)
* Headlight
* Interior Light
* Key Reminder
* Light Auto Turn Off System
* Moon Roof
* Navigation System
* Power Window
* Seat Belt Warning
* Theft Deterrent System
* Wireless Door Lock Control
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A10A42C11A42P544
A11B42C12B42S2045
A1742E642S30A43
B9A42G543S31B43
B10B42O343T443
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
3E30
3H31Instrument Panel Wire and Center J/B (Behind the Instrument Panel Center)
3J31()
4A334F33Cowl Wire and Passenger Side J/B (Right Side of Grove Box)
4O32
g(g )
System Outline

2005 HIGHLANDER (EWD592U)
260
Multiplex Communication System - BEAN Bus
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IB252Front Door LH Wire and Cowl Wire (Left Kick Panel)
IE152Roof Wire and Cowl Wire (Near the Bottom of Left Front Pillar)
IF352Instrument Panel Wire and Cowl Wire (Right Side of Instrument Panel J/B)
IL254Instrument Panel Wire and Cowl Wire (Upper Side of Passenger Side J/B)
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
I854Cowl Wire

2005 HIGHLANDER (EWD592U)
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MEMO