2001 TOYOTA HIGHLANDER o2 sensor

Replace crankshaft position sensor. CHECK RESISTANCE OF CRANKSHAFT POSITION
Standard:Cold Hot
985 to 1,600 W1,265 to 1,890 W
CHECK IGT SIGNAL FROM ECM
REPAIR WIRING BETWEEN IGNITION COIL AND ECM
OKNG
NG SENSOR (See page 18-6)
OK (See page 05-174)Check ECM (see page 05-32).
OK Continued from previous page 18-2
- IGNITIONIGNITION SYSTEM (2AZ-FE)
2862 Author
: Date
:
(8) Using a 16 mm (0.63 in.) plug wrench, install the spark plugs.
Torque: 19 NVm (194 kgfVcm, 14 ftVlbf)
(9) Install the ignition coils.
Torque: 9.0 NVm (92 kgfVcm, 80 in.Vlbf)
(10) Install the engine cover No. 1.
Torque: 9.0 NVm (92 kgfVcm, 80 in.Vlbf)

100FS-06
10-12
- ENGINE CONTROL SYSTEMSFI SYSTEM (3MZ-FE)
2370 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
SFI SYSTEM (3MZ-FE)
ON-VEHICLE INSPECTION
1. CHECK THROTTLE BODY
(a) Listen to the throttle control motor operating sounds.
(1) Turn the ignition switch ON.
(2) When pressing the accelerator pedal position sensor lever, listen to the running motor. Make sure
no friction noise comes from the motor.
If friction noise exists, replace the throttle body.
(b) Inspect the throttle position sensor.
(1) Connect the hand-held tester or OBD II scan tool to the DLC3.
(2) Turn the ignition switch ON.
(3) Check that the MIL is off.
(4) Under CURRENT DATA, the throttle valve opening percentage (THROTTLE POS) should be
within the standard value range below.
Standard throttle valve opening percentage:
60 % or more
If the percentage is less than 60 %, replace the throttle position sensor.
NOTICE:
When checking the standard throttle valve opening percentage, the transmission should be in the
neutral position.
2. CHECK ACCELERATOR PEDAL POSITION SENSOR
(a) Turn the ignition switch ON. Under CURRENT DATA, the voltage of the throttle position sensor should
be within the standard value range below.
Standard: 0.6 to 1.0 V
If the result is not as specified, replace the accelerator pedal position sensor.
3. CHECK CAMSHAFT TIMING OIL CONTROL VALVE (OCV) ASSY
(a) Connect the hand-held tester or OBD II scan tool to the DLC3.
(b) Turn the ignition switch ON.
(c) Start the engine and warm it up.
(d) Select the VVT from the ACTIVE TEST menu.
(e) Check the engine speed when the OCV is operated by the hand-held tester or OBD II scan tool.
Standard:
ConditionSpecified Condition
VVT system is OFF (OCV is OFF)Normal engine speed
VVT system is ON (OCV is ON)Rough idle or engine stalled
If the result is not as specified, replace the OCV assy.

2005 HIGHLANDER (EWD592U)
M
3
IK2 10
L- B
GRL- W
B- R
2
30 W
E
R
V
B- RD
5
IM1 5
R
1
BJ1 18B
5IO1
W- B
78
6 5
(
Cont. next page)
2 HIGHLANDER (
Cont' d)
E ngine C ontrol (
3MZ- FE)
29
STARTER Fuse
<1- 2>
Park/Neutral Posit ion SW
<1- 2>NS W STA
B B- R RSB
W- B
EB1
CCV
LE 27 1
2 B- W
B
Y
G
B- WP
R- W
W
B
Y
L A
B
D
G
VG
J
K E
L
M
N
O
P
QD 35E4EE32E1E 8A 10A20
THA 2A 1A
B- W
3AE E 16 E 17
W
Y
E2 G
G B- WWB YL2 1
2 1
2 1
6CE 15 34 E EB2 7B- W B- R B- R
BR- YG
33 D
W
A
B
C 21 6B
W+BM
W
RRL +B 2 +B B AT T
Air Conditioning Sys tem
<34- 8><35- 8>B 2
B- R
B- R
W- L2B- R
E R- W
GR
Y- GBR
8C
L- W
8E
R- L
9E
P10 E
Y- B11 E
L- Y12 E
G- Y13 E
L- R
I gnit ion Coil and I gniter s
<1- 3><1- 4> E
FAN NO. 2 Relay
<32- 3>
MREL FC #60 #50 #40 #30 #20 #10ACMG CF IGT1 IGT2 IGT3 IGT4 IGT5 IGT6 ACMACI S PRG HT2 B
Charging Sy stem
<1- 5>
11 IK21
29 D
BOX 2B3(
Shielded)
4 B- W CW W
C
IO1 16 F
BJ1 14
GR
1
B- W
STP
19 B
Electronically Controlled Transmission
and A/T I ndic ator Sys tem
<13- 2>
27 D 35 D 26 D 34 D
Elec tr onic ally
Controlled
Transmission and
A/T Indicator System
<13- 5>
NT- NT+ NC+ NC-
IGF1
Ignition Coil and Igniters
<1- 3> W- RE 24 GR
W
B- R B- R B- RGR
B- R B- W
9A
IGSW 12 B
ST 1-E E
HEE
P
2
1
Stop Light
System< 9- 1>SB
I11 AW4F BR
BR
P
PVP
4 3
14 IM1
W
V 5
S15 V1 4
J 3
H 6
V 4
V 2
M 1FAN NO. 1 Relay
<32- 3>
E 5(
A)
, E 6(
B)
, E 7(
E)
, E 8(
D)
, E 9(
C)
Engine Cont rol Module
Heated Ox ygen Sensor
(
Bank 2 Sensor 2)
Junction
Connector
Mass Air Flow Meter
Stop Light SW VSV (
ACIS No. 2) VSV (
EVAP)
VSV (
ACM) VSV
(
Canis ter Closed Valve)
E2 +B +B E1
VG E2G THA
HT OX

2005 HIGHLANDER (EWD592U)
M OVERALL ELECTRICAL WIRING DIAGRAM
1
W- BW- BG- B L
BJ1 VTA1 VCVTA2 E2
12
BRBI1 13 IM1
3M- M+12
IM1
1112
10 9
(
Cont. next page)
2 HIGHLANDER (
Cont' d)
E ngine C ontrol (
3MZ- FE)
E(
Shielded) R- W
GR B
C
12
IO1 3 D
6
25 D 21 D24 13
BRB
R- Y
VTA2 VC18 E 315D 22D A20 13 24D
D 3EB1
30 D 4 D 23 D D31 13 24 6EB1
17 C 3 C 21 E2 1
19 E 21 A C
2 1 16 C 15 C
2 1 14 C 13 C 4 W- B
B- WBRY
GRWB- R
YA
B
D
E
PLL
HT1B OX1B HA1H A1A+ A1A- HA2A A2A+ A2A- TC 2
G- WG- RL- R G- B
W
G- R G- B
OC2+ GE01 M+ VTA1 THW PTNK
OC 1+ OC 1 - OC2 - E(
Shielded)
(
Shielded) O
O
BRR- W
5
B- R R- W
IM1 (
Shielded)
6
M-IM1 3
(
Shielded)
W
F AW
(
Shielded)
BJ 1 16
3BI1IO1 15
2IM1
BR G- RBYL
WB R- WB- R Y
WB R- WB- RY3 Y
1 W- B
2 BR BR
1 22 C
EC Left Side of the
Cylinder Head7E 6E
Y- B W- B W- BMOPS E01 E02
1 10 CPSW
R- W
(
Shielded)
C
12 A
Voltage Inv ert er
< 27- 4>ELS2G
DMulti- Display
<30- 6>
R- W R- W
W- BIO17
PL
17 BJ1
BR2BI1Y
O
FBR
5A
5B
E 28
E2
BR BR BRR- W
BR
BR
4C
W- BME01
W- B (
*1)
(
*2)
* 2 : w/ Rear Seat Ent ert ainment Sys tem * 1 : w/ Navigation Syst em
O 1
P 2 E 2
V11
S28(
A)
, S29(
B)
T13
A 7
A 6
H10 J16
E 5(
A)
, E 6(
B)
, E 7(
E)
, E 8(
D)
, E 9(
C)
C 3
C 4 Air Fuel Ratio Sens or
(
Bank 1 Sens or 1) Air Fuel Ratio Sens or
(
Bank 2 Sens or 1)
C amsh af t Ti mi ng Oi l
Control Valve LH
C amsh af t Ti mi ng Oi l
Control Valve RH
Engine Coolant
Temp. Sensor
Engine Contr ol Module
Heat ed Oxy gen Sens or
(
Bank 1 Sensor 2) Junction
Connec tor
Oil Pressure SW
Power Steering Oil
Pressure SW
Short Connector
Throttle Control Motor
Vapor Press ur e Sens orVCC GND PTNK+B E2
+B AF- +B AF-
AF + HT AF+ HT OX 1B HT1B Thrott le Posit ion Sensor

2005 HIGHLANDER (EWD592U)
M
1516
14 13
(
Cont. next page)
2 HIGHLANDER (
Cont' d)
(
Shielded)
(
Shielded)
(
Shielded) O
E ngine C ontrol (
3MZ- FE)
A
B
D
E
ED Rear Side of
Cylinder Head6D 7D 26 C 25 C C24 27 CIM1
A A
A
A
A
AA
A
A
L R R GL B- W
(
Shielded) (
Shielded) (
Shielded)VV2+ NE+ NE- VV1+ EKN2(
Shielded)
(
Shielded)
(
Shielded)
(
Shielded)
(
Shielded)BR
(
Shielded)
BR RR
7C
W- B W- B
W- B
W- BE03 E05 E04B
D O
R
BR
G
G C
(
Shielded)
D28D 1 20 D 2D1EA1 2 3 EA1 4EA1
KNK2 KNK1 EKNKEA1
W
B
G
R R GB W
C W- B
F
B
G A
5ATACH
18 ASIL
19 AWFSE
E
R V
R
B
15 A
EOM
W- B
A W
30 AENG-
25 ATRC+
31 ATRC-
17 ANE O
R Y GB
24 AENG+
V
Skid Control ECU
wit h Act uat or
<15- 5> FW
1 2
1 2
2 1
26 A 22 A 28 A 27 A 23 A 29 A
VCPA VPA EPA VCP2 VPA2 EPA2 EPA2 YPA2 VCP2 EPA VPA VCPA
231564
BRWL R
B G Elec tronic ally Cont rolled
Transmis sion and A/T
Indicator System< 13- 4>
D 10 B 17 B
YSPD 9IL2Y
CANCEL
- SET
+R E S
ON - OFF
LG
24 BCCS
Cruise Control (
3M Z- FE)
26 BIMO
V
27 BIMI
B Combination Meter
< 31- 4>
29 B 18 BMPX1 MPX2
Multiplex Communication
Sy st em (
BEAN Bus)
< 20- 3>
1 2
1 2
V
(
Shielded)
1E
E1
BR
A
A4
17 IM1 BRBR
5 4
OLG Cr uis e Cont rol SW
K 3
V 7
C 7
V 6
J 7
A27
K 2C1 6
E 5(
A)
, E 6(
B)
, E 7(
E)
, E 8(
D)
, E 9(
C)Accel Position SensorCrankshaft
Pos ition Sens orCombinat ion SWEngine Contr ol ModuleJunct ion
Connect or
Knock Sens or
(
Ba nk 1)
Knock Sens or
(
Ba nk 2)
VVT Sens or LH VVT Sens or RH
Transponder Key Computer
<4- 3>

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

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-

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