TOYOTA HIGHLANDER 2001 Service Repair Manual

2005 HIGHLANDER (EWD592U)
156
SRS
10A
IGN
1L 6
B 5 B 10 B11
IG2 P+ P- 12
Y- B
Y
B 8B7
P2+ P2- 34
Y- R
Y- G
2 1
Y- B
Y
P132 1C 9C10
Y- B
Y
P14 PL+ PL- PR+ PR-
2 1B 14 B13
Y- B
Y
A20D+ D-
3 4B 16 B17
Y- R
Y- G
D2+ D2-
1 2B 15 B26
G
R
A 8+SL - SL
IK1 2IK11
W- R
BR
+SL - SL1 2B 9B20
+SR
W
B
A 9+SR - SR
IK1 3IK14
B- W
BR- W
-SR
BB
20 A A 17 A16 A18
SSL+ SSL- VUPL ESL
G
R
W
B
3241S16
1 4 2 3
B WR G
ESR VUPR SSR- SSR+15 C 17 C 16 C C13 S17 1G 6
P
SSL+ SSL- VUPL ESL SSR+ SSR- VUPR ESRP
A19
A 8
A 2A 7
A 1 4E1
4M4
C 56C(
*3)
(
*4)
(
*3) (
*3) (
*3) (
*3) (
*3) (
*3) (
*3) (
*3)
A16(
A)
, A17(
B)
, A18(
C) From Power Source System (
See Page 62)
Airbag Sensor
Fro nt LHAirbag Sensor
Fron t RHAirbag Sensor Assembly Airbag Squib
(
Front Passenger Air bag Assembly)
Airbag Squib
(
Steering Wheel Pad)Pretensioner LH Pretensioner RH Side Airbag Sensor Front LH Side Airbag Sensor Fr ont RH

2005 HIGHLANDER (EWD592U)
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C 18 C4C19 C20
CSR+ CSR- VUCR ESCR
R
G
W
B
3241S33
1A A 15 A14 A13
CSL+ CSL- VUCL ESCL
R
G
W
B
3241S32
2 1A 12 A11
Y- B
Y
S182 1C 5C6
Y- B
Y
S19 SFL+ SFL- SFR+ SFR-
7C 8C
12
C18
Y- BY
10 A 9A
12ICR- ICR+ ICL- ICL+
C19
Y- BY
W
B
G
R
LSP+
LSP- LBE+ LBE- CSL+ CSL- VUCL ES CL CSR+ CSR- VUCR ESCR
(
*1 *3)
(
*1 *3) (
*1 *3) (
*1 *3) Y
Y- B
BK2 2 BK21
(
*2 *3) Y- B (
*2 *3) Y
2413 * 1 : w/ Rear Seat Entertainment System
* 2 : w/o Rear Seat Entertainment System
W- B
E2
B 28
IA 1L 1
1D 14
W- B
PP
B19
GND VS
A 3A 4
A 8A 3
A 11A 19
A 6(
*4) A 2(
*3)
(
*3)
(
*3)
W- B
E1
B 27
1L 9 * 3 : w/ Curtain Shi eld Airbag
* 4 : w/o Curtain Shield Air bag
(
*3)
(
*3) (
*3) (
*3) (
*3) (
*3) (
*3) (
*3) (
*3)
(
*3)
(
*3) (
*3)
A16(
A)
, A17(
B)
, A18(
C)
Airbag Sensor Assembly
Buckle SW LH
Seat Position Airbag
Sensor LH
Curtain Shield Airbag
Squib LHCurtain Shield Airbag
Squib RH Side Airbag
Squib LHSide Airbag
Squib RH Side Airbag Sensor Rear LH Side Airbag Sensor Rear RH

2005 HIGHLANDER (EWD592U)
158
SRS
7B 12
BR
D 3SIL
SIL1L 3
1E 3
4M 1
4A 12
W P
B 22
MPX2
BR
R
* 5 : w/ Navigation System
* 6 : w/o Navigation System
B 6
V
SVC4
B 10
B
SIG4
B 4
BR
SGD4
123
SVC4 SIG4 SGD4
O11 SGD2 SIG2 SVC23 2 1B 12
W
SVC2
B 8
L
SIG2
B 2
O
SGD2
O 9B 11
SVC1
R
SVC1
1
B 7
SIG1
SB
SIG1
2
B 1
SGD1
G
SGD1
3
B 5
SVC3
GR
SVC3
1
B 9
SIG3
Y
SIG3
2
B 3
SGD3
W
SGD3
3
1 2A 9
L
BSW
A 5
GR
BGND
B17BR
C 1
FSR+
W
C 2
FSR-
B
A 4
FSR-
B
A 8
FSR+
W
BL1 4BL11
A 7
IG
BR
A 1
+B
R
6BL1 BL15 IO2 5IO211
G
PP
P
P
P
O 8 O10
A 2
V
DIA
A 3
W- B
GN D
IO2 4BL1 2BL13
R
W- B
C C
BFJ18
W- B
A
A
PJ16
AE E
J17
B 2B1
A 2A1
B 24
MPX1
BR
P
B 1
L
P- AB
1L 2
1K 5
B
PAON
25
Y
B
1L 8
1E 11
G
IL1 14
W
L
WBR
R
EE
J 6 P
(
*4) (
*3)
C 3C10* 3 : w/ Curtain Shield Airbag
* 4 : w/o Curtain Shield Airbag
S30(
A)
, S31(
B)
A16(
A)
, A17(
B)
, A18(
C)
O 6(
A)
, O 7(
B)
Airbag Sensor Assembly
Buckle SW
(
Front Passenger' s Side)
Data Link Connector 3Junction
Connector
Junction
Connector
Junction
ConnectorJunction
ConnectorOccupant Classification ECUOccupant Classification
Sensor Front LH
Occupant Classification
Sensor Front RHOccupant Classi fication
Sensor Rear LH
Occupant Classi fication
Sensor Rear RH
Short Connector

2005 HIGHLANDER (EWD592U)
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7. 5A
ECU- B
Y SB
BR
W- L
R BRP
P
10 1G1D 9
3E 7
3J 12
A 9IC3 5
IL2 1
MPX1
18MPX2 29
GR E 5
B 6A 10IF3 5IB2 1
P 5
V
7
MPX1
8 MPX2
GR
IB2 84F 74A 5
A 14 B 2
G
4
MPD1
11MPD2 12 IL27. 5A
IG1
1K 10
MPX2
MPX1 MPX+ DIMMPX-T1 5
4
6
SB
7
W
2
L
W
L
G
W
OYR
G(
*6)
V(
*5)
SB
SBG 5
(
*5)
2A 4
R
3A 10
3F 6
GRBR
5
W- B
3F 133F 10
W- B
Y SB
W- B IG+
DIM PAON P- AB SW1
Air bag On
Airbag Off
1K 1
LG
LG
From Power Source System (
See Page 62)
B 9(
A)
, B10(
B)
A10(
A)
, A11(
B)
A/C Control Assembly Body ECU
Engine Control
Module Gateway ECU
Power Window Master
SW with ECU
Telltale Light Assembly

2005 HIGHLANDER (EWD592U)
160
SRS
Y SB
21 A 9 B
Airbag
IB A
7V 1
R
11 A
3B 12
3K 2
PB
73C 43A 13 1K 10A
HEATER
BR
W- BA 2 LG
Y
SB
LG
From Power Source System (
See Page 62)
C11(
A)
, C12(
B)
Combination Meter

2005 HIGHLANDER (EWD592U)
161
The SRS is a driver and front passenger protection device which has a supplemental role to the seat belts.
When the ignition SW is turned to ON, the current from the IGN fuse flows to TERMINAL (B) 5 of the airbag sensor
assembly.
If an accident occurs while driving, when the frontal impact exceeds a set level, the current from the IGN fuse flows to
TERMINALS (B) 14, (B) 16, (B) 10, (B) 8, (A) 8 (w/ curtain shield airbag), or (A) 2 (w/o curtain shield airbag) and (C) 9 (w/
curtain shield airbag), or (C) 5 (w/o curtain shield airbag) of the airbag sensor assembly to the airbag squibs and the
pretensioners to TERMINALS (B) 13, (B) 17, (B) 11, (B) 7, (A) 7 (w/ curtain shield airbag), or (A) 1 (w/o curtain shield airbag)
and (C) 10 (w/ curtain shield airbag), or (C) 6 (w/o curtain shield airbag) of the airbag sensor assembly to TERMINAL (B) 27,
(B) 28 or BODY GROUND to GROUND, so that current flows to the airbag squibs and the pretensioners and causes them to
operate.
When the side impact also exceeds a set level, the current from the IGN fuse flows to TERMINALS (A) 12, (C) 5, (A) 9 and
(C) 8 of the airbag sensor assembly to the side airbag squibs and the curtain shield airbag squibs TERMINALS (A) 11, (C) 6,
(A) 10 and (C) 7 of the airbag sensor assembly to TERMINAL (B) 27, (B) 28 or BODY GROUND to GROUND, causing side
airbag squibs and curtain shield airbag squibs to operate.
The airbag stored inside the steering wheel pad is instantaneously expanded to soften the shock to the driver.
The airbag stored inside the passenger's instrument panel is instantaneously expanded to soften the shock to the front
passenger.
Side airbags are instantaneously expanded to soften the shock of side to the driver and front passenger.
The curtain shield airbag can ease an impact on the head of the front and rear passengers and reduce risks of injury.
In a head-on crash, the driver moves forward and may strike his/her lower limbs against the instrument panel, the key
cylinder, etc.
The pretensioners make sure of the seat belt restrainability.
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A838 (3MZ-FE)C1844O1047 (w/o Power Seat)A840 (2AZ-FE)C1944O1146 (w/ Power Seat)
A938 (3MZ-FE)D342O1147 (w/o Power Seat)A940 (2AZ-FE)E542P544
A10A42G543P1344
A11B42J643P1444
A16A42J1643S1645
A17B42J1743S1745
A18C42J1844S1846 (w/ Power Seat)
A1942O6A46 (w/ Power Seat)S1847 (w/o Power Seat)
A2042O6A47 (w/o Power Seat)S1946 (w/ Power Seat)
B9A42O7B46 (w/ Power Seat)S1947 (w/o Power Seat)
B10B42O7B47 (w/o Power Seat)S30A43
B1746 (w/ Power Seat)O846 (w/ Power Seat)S31B43B1747 (w/o Power Seat)O847 (w/o Power Seat)S3245
B1946 (w/ Power Seat)O946 (w/ Power Seat)S3345
C11A42O947 (w/o Power Seat)T1543
C12B42O1046 (w/ Power Seat)
System Outline

2005 HIGHLANDER (EWD592U)
162
SRS
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1D
1E29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1G
()
1K28Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1L29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2A27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3A
3B
3C30
3EInstrument Panel Wire and Center J/B (Behind the Instrument Panel Center)
3F
()
3J313K31
4A
4E33Cowl Wire and Passenger Side J/B (Right Side of Grove Box)4FCowl Wire and Passenger Side J/B (Right Side of Grove Box)
4M32
: 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)
IC352Engine Room Main Wire and Cowl Wire (Left Cowl Side Panel)
IF352Instrument Panel Wire and Cowl Wire (Right Side of Instrument Panel J/B)
IK154Engine 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)
IO254Cowl Wire and Floor Wire (Right Kick Panel)
BK256Roof No.2 Wire and Floor Wire (Right Rear Quarter Panel)
BL158Floor Wire and Front Seat RH Wire (Under the Front Passenger's Seat)
: GROUND POINTS
CodeSee PageGround Points Location
IA52Left Cowl Side Panel
IB52Right Instrument Panel Brace
BF56Near the Rear Side Marker Light RH

2005 HIGHLANDER (EWD592U)
163
MEMO

2005 HIGHLANDER (EWD592U)
164
Cruise Control for 3MZ-FE
1 11 4 12 5 10 8 2 3
G- YW P- L
+B BATT20A
EF1 NO. 1
B- W W- B
L- W
Y- R
Y- B
Y- G
L- Y
L- R
G- B
G- R
23 15
2B 4 2F 4 2B 52B7
Y
W
IK2 10 IK21110A
IGN
1G 6 20A
STOP
1E 1
4E 1
B BR
P
I 74M 4
EH1 2
4M 124L 3
1A A3A 9 B 19
A 8
BRW
D 10 D13 D11 D15 D17 D32 D 16 D 12 D14 9
L- B
E 1SL1- SL1+
18 D 19 D
B- WR- B
613IGSW STP
A
J 2MREL S4 SLT+ SLT- DSL SL2+ SL2-
W- B
SL3+ SL3- THO1
D
S15
EFI
Relay
IK3 13
B
B
9E
E
Y
G
GR
SB
LG
BR
R
OL
+B2 2A
WW
P W
B
SR
O
E
P V
B 12
ST1-4 3
R
10A
ETCS
2
W
B 6
+BMIC1 42 1
L- W
R
721G7. 5A
IG1
B 10
D 8IM1IM1 10
R Y
2
J 6P 1 V
THO SL3- SL3+ SL1- SL1+ SL2- SL2+ DSL SLT- SLT+ S4 SR
E2
7
BR D From Power Source System (
See Page 62)
E 5(
A)
, E 6(
B)
, E 7(
E)
, E 8(
D)
, E 9(
C)
Electr onically Controlled Transmission SolenoidEngine Control Module
Junction
Connector
Junction
ConnectorA/T Indicator SW
Stop Light SW

2005 HIGHLANDER (EWD592U)
165
W- B W- B
W- B
W- B W- B
W- B
BR G- BY BR
7C
EC ED6E 7E 6D 1CD 7E03
W- B
W- B
A
A
BR
B- R
VC
3 5
VTA2
1 2
E14 E 28 E18 E19
VTA1
BRE 2
4 E2 VC THW E04 E1E05 E01 E02
I 6 E 31VTA2
R- W
6E 21VTA1
BR
A 5B 5
E2
W- B
W- B W- BL
27 A
VCP2 VPA2A 23
W
23
BR
29 A
EPA2
B
22 A
VPA EPAA 28
R
156 EPA2 VPA2 VCP2 EPA VPA
G
26 A
VCPA4 VCPA A27
ENG+ NEOA 17 A24
ENG-A 30
B
V
R
TCA 20
O
D DJ16D 3
O
13TC
10 9 23 8 22NEO ENG+ ENG- TRC+ TRC- S27
IC4 3IC45IC418 IC47IC419
TRC+A 25
Y
TRC-A 31
GV
W- L
W- G
G- B
Y- B
C 2
1
W
M-
C 3
2
B
M+
M+ M- C 17GE01
(
Shielded)
J 7
BR A
W- B
4CME01
I 6
BRE 5(
A)
, E 6(
B)
, E 7(
E)
, E 8(
D)
, E 9(
C)
S28(
A)
, S29(
B)
Accel Position Sensor
Data Link
Connector 3 Engine Coolant Temp. Sensor
Engine Control Module
Junction
ConnectorJunction
Connector
Skid Control ECU with Actuator
Shor t Connector
Throttle Control Motor T1 3
Throttle Position Sensor12
SP1
BR- R
BR- R