2001 TOYOTA HIGHLANDER mass air flow

- INTRODUCTIONTERMS
01-47
47 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U) HO2S
Heated Oxygen SensorHeated Oxygen Sensor (HO2S)
IACIdle Air ControlIdle Speed Control (ISC)
IATIntake Air TemperatureIntake or Inlet Air Temperature
ICMIgnition Control Module-
IFIIndirect Fuel InjectionIndirect Injection (IDL)
IFSInertia Fuel-Shutoff-
ISCIdle Speed Control-
KSKnock SensorKnock Sensor
MAFMass AirflowAir Flow Meter
MAPManifold Absolute PressureManifold Pressure Intake Vacuum
MCMixture Control
Electric Bleed Air Control Valve (EBCV)
Mixture Control Valve (MCV)
Electric Air Control Valve (EACV)
MDPManifold Differential Pressure-
MFIMultiport Fuel InjectionElectronic Fuel Injection (EFI)
MILMalfunction Indicator LampCheck Engine Lamp
MSTManifold Surface Temperature-
MVZManifold Vacuum Zone-
NVRAMNon-V olatile Random Access Memory-
O2SOxygen SensorOxygen Sensor, O2 Sensor (O2S)
OBDOn-Board DiagnosticOn-Board Diagnostic System (OBD)
OCOxidation Catalytic ConverterOxidation Catalyst Convert (OC), CCo
OLOpen LoopOpen Loop
PAIRPulsed Secondary Air InjectionAir Suction (AS)
PCMPowertrain Control Module-
PNPPark/Neutral Position-
PROMProgrammable Read Only Memory-
PSPPower Steering Pressure-
PTOXPeriodic Trap OxidizerDiesel Particulate Filter (DPF)
Diesel Particulate Trap (DPT)
RAMRandom Access MemoryRandom Access Memory (RAM)
RMRelay Module-
ROMRead Only MemoryRead Only Memory (ROM)
RPMEngine SpeedEngine Speed
SCSuperchargerSupercharger
SCBSupercharger BypassE-ABV
SFISequential Multiport Fuel InjectionElectronic Fuel Injection (EFI), Sequential Injection
SPLSmoke Puff Limiter-
SRIService Reminder Indicator-
SRTSystem Readiness Test-
STScan Tool-
TBThrottle BodyThrottle Body
TBIThrottle Body Fuel InjectionSingle Point Injection
Central Fuel Injection (Ci)
TCTurbochargerTurbocharger
TCCTorque Converter ClutchTorque Converter

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
2
B- R
W WW
FW
1
78
6 5
(
Cont. next page)
3 HIGHLANDER (
Cont' d)
A
B
Y W
W
B- R
W
B
Y
L
E ngine C ontrol (
2AZ- FE)
A
B
C
J
K
L
M
N
O4E E32E1E 8A 10A10 IK2
1A 6BIK2 B- W
E
B- WBATT DP
W
ABR
3
Y
B WB YL
2 1
34 E 11B- R G
A
B
C
C 21RL +B +B2 +BM
Air Conditioning Sys tem
<34- 8><35- 8>B 2E 19W
B- R
B- R
W
24 E
W- R
8E
R- W
9E
P10 E
Y- B11 E
L- Y
Ignition Coil and Igniters
<1- 3><1- 4>
Ignition Coil and Igniters
<1- 3>
MREL FC #4 #3 #2 #1 ACMG IGF1 IGT1 IGT2 IGT3 IGT4PRG
Charging Sy stem
<1- 5>
B- R
B- R
G
R- LPSW
C 10
1
G
30 E
VG29 E
EVG20 E
THA 3 1
2
R
4 5L- WL- B
2 1
E 5
18 E 6 4
21 E 31 C 3 C 22
17 C 3E2 M- M+ VTA2 VAT1 VC
(
Shielded)
GE01
BR BR G- B
VC
WB B- R
VTA1B- WYY
VTA2 M+ M- THWBR G
E02 E0 1 MOPS
W- BElec tr onic ally Controlled
Trans mis sion and A/T
Indicator System< 14- 2>
W- B
Y- BE 6 E 7
Left Side of
Cylinder BlockEF C 22
1C
FAN NO. 3 Relay
<33- 2> R- WCF
19 8STP
B
L- WE 14FAN NO. 2 Relay
<33- 3>FAN
2 1 OC 1+
C 16 15 COC 1 -
G- R G- W
B- R B- R
27 E 4 A 21 A3IO1 4IO112 BJ1 13 BJ1 BJ1
5IO118 14 BJ1
IO1 16
13 I M17IO1BJ1 164
12 IM1 15 IO1BJ1 1728139
PPMP MPMP VPMP Y
L BRB
L BRR WY RV
Y
WL
LG
Y- G SB
BR
P
BR
Elec tronic ally Cont rolled
Transmis sion and A/T
Indicator System< 14- 4>D 10 B 17 B
Y
Combination Meter
< 31- 4>SPD 9IL2Y
14 I M1
SB
I11 A
SBW5A
5B
E 28
BRE2
ST ARTER F us e
<1- 2>NSWB- RE 16
Park/Neutral Position SW
<1- 2>STABE 17 BR P
H
9A
IGSW 12 B
ST1-E
E EE
2
1
Stop Light
System< 9- 1> PP VPP
3
4D
E W- B
GR
GR6
ME01
W- BC 4
W- B
O 1
P 2
C 2
C17 T1 3
E 2
E 5(
A)
, E 6(
B)
, E 7(
E)
, E 8(
D)
, E 9(
C)
S2 8(
A)
, S29(
B)
M 1
V 4
S1 5
J 6
FAN NO. 1 Relay
<33- 3>
C a ms h a f t T i mi n g
Control Valve
Charcoal Canister Assembly
Engine Coolant
Temp. Sens or
Engine Cont rol Module
Mass Air Flow MeterOil Pressure SW
Power St eer ing Oil
Pressure SW
St op Light SWShort Connect or
Throttle Control Motor
VSV (
EVAP)
Junct ion
Connect or
VG E2G THAEKR EKN EKL EKQ EKS EKP
+B E2EKM Throttle Pos ition Sens or

051ZI-15
A90309
Fuel Pump
Charcoal Canister Assy ECMCombination Meter Assy Mass Air Flow Sensor
(Including Intake Air Temperature Sensor)
DLC3 Accelerator Pedal Rod Assy
(Accelerator Pedal Position Sensor)
Passenger Side J/BEVAP VSV
Heated Oxygen Sensor
(Bank 1 Sensor 2)
Engine Room R/B No. 2
and Engine Room J/B

EFI Relay

STARTER Relay

EFI NO. 1 Fuse

EFI NO. 2 Fuse

ETCS Fuse

AM2 Fuse

ALT Fuse

STARTER Fuse
Crankshaft
Position SensorIgnition Coil
with Igniter
Knock SensorThrottle Body Assy
(Throttle Position
Sensor and Actuator) Camshaft Timing Oil
Control Valve Assy
Camshaft Position Sensor
A/F Sensor
(Bank 1 Sensor 1)
PNP SwitchR/B Sub-assy:

C/OPN Relay
Instrument Panel J/B Assy

IGN Fuse

IG2 Fuse

STOP
Engine Coolant
Temperature Sensor
InjectorPump Module
Front
05-4
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
194 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
LOCATION

L
CodePart Name Part NumberCodePart Name Part Number
2005 HIGHLANDER (EWD592U)
343
E 4Electronically Controlled Transmission
Pattern Select SW90980-10797
E 5Engine Control Module90980-12142
E 6Engine Control Module90980-12146
E 7Engine Control Module90980-12144
E 8Engine Control Module90980-12145
E 9Engine Control Module90980-12143
E10Electronically Controlled Transmission
Solenoid90980-1 1658
E12Evaporator Temp. Sensor90980-1 1918
F 1Front Fog Light LH90980-1 1660F 2Front Fog Light RH90980-1 1660
F3Front Parking Light LHF 3Front Turn Signal Light LH90980-1 1020
F4Front Parking Light RH90980-1 1020
F 4Front Turn Signal Light RH
F 5Front Wiper Deicer90980-1 1407
F 6Front Wiper Motor90980-1 1599
F 7Fusible Link Block-
F 8Front Power Outlet90980-10760
F10Front Door Speaker LH90980-10935F11Front Door Speaker RH90980-10935
F12Fuel Pump90980-1 1077F12Fuel Sender90980-11077
F14Front Washer Motor90980-1 1019
G 1Generator90980-1 1964
G 2Generator90980-09365
G 4Glove Box Light90980-1 1098
G 5Gateway ECU90980-1 1911
H 1Headlight LH (High Beam)90980-1 1659
H 2Headlight LH (Low Beam)90980-1 1660
H 3Headlight RH (High Beam)90980-1 1659
H 4Headlight RH (Low Beam)90980-1 1660
H 6Heated Oxygen Sensor (Bank 2 Sensor 2)90980-1 1930
H 7Horn LH90980-10619H 8Horn RH90980-10619
H 9Heater Relay82660-44010
H10Heated Oxygen Sensor (Bank 1 Sensor 2)90980-1 1929
H11High Mounted Stop Light90980-1 1148
I 2Ignition Coil and Igniter No.1
I 3Ignition Coil and Igniter No.2
I 4Ignition Coil and Igniter No.390980-1 1885I 5Ignition Coil and Igniter No.490980-1 1885
I 6Ignition Coil and Igniter No.5
I 7Ignition Coil and Igniter No.6
I8Injector No.1 (2AZ-FE)90980-1 1875I 8Injector No.1 (3MZ-FE)90980-1 1153
I9Injector No.2 (2AZ-FE)90980-1 1875I 9Injector No.2 (3MZ-FE)90980-1 1153
I10Injector No.3 (2AZ-FE)90980-1 1875I10Injector No.3 (3MZ-FE)90980-1 1153
I11Injector No.4 (2AZ-FE)90980-1 1875I11Injector No.4 (3MZ-FE)90980-1 1153
I12Injector No.590980-1 1153I13Injector No.690980-11153
I14Ignition Key Cylinder Illumination90980-1 1148
I15Ignition SW90980-1 1615
I16Interior Light90980-10908
I17Inner Mirror90980-1 1794
J 1Junction Connector
J 2Junction Connector90980-1 1194J 3Junction Connector90980-1 1194
J 4Junction Connector
J 5Junction Connector90980-1 1542
J 6Junction Connector90980-1 1915
J 7Junction Connector90980-1 1542
J10Junction Connector90980-10807J12Junction Connector90980-10807
J13Junction Connector90980-1 1915
J14Junction Connector90980-10976
J16Junction Connector90980-1 1915J17Junction Connector90980-1 1915
J18Junction Connector
J19Junction Connector90980-1 1542
J20Junction Connector
J21Junction Connector
J22Junction Connector90980-12374J23Junction Connector90980-12374
J24Junction Connector
K 1Knock Sensor (Bank 1)
K 2Knock Sensor (Bank 1)90980-1 1875
K 3Knock Sensor (Bank 2)
K4Key Interlock Solenoid90980-10795K 4Unlock Warning SW90980-10795
L 1License Plate light90980-1 1300
M 1Mass Air Flow Meter90980-1 1317
M 2Main SW90980-10957
M 3Multi-Display90980-12203
M 4Multi-Display90980-12410
M 5Multi-Display90980-12012
N 1Noise Filter (Ignition System)90980-10843
N 2Noise Filter (Rear Window Defogger)90980-10860
N 3Navigation ECU90980-1 1973

2005 HIGHLANDER (EWD592U)
39
G
Position of Parts in Engine Compartment
[3MZ-FE]
I 2 Ignition Coil and Igniter No.1
I 3 Ignition Coil and Igniter No.2
I 4 Ignition Coil and Igniter No.3
I 5 Ignition Coil and Igniter No.4
I 6 Ignition Coil and Igniter No.5
I 7 Ignition Coil and Igniter No.6
I 8 Injector No.1
I 9 Injector No.2
I 10 Injector No.3
I 11 Injector No.4
I 12 Injector No.5
I 13 Injector No.6
J 1 Junction Connector
J 2 Junction Connector
J 3 Junction Connector
J 4 Junction Connector
K 2 Knock Sensor (Bank 1)
K 3 Knock Sensor (Bank 2)
M 1 Mass Air Flow Meter
N 1 Noise Filter (Ignition System)
O 1 Oil Pressure SWP 1 A/T Indicator SW
Back-Up Light SW
Park/Neutral Position SW
P 2 Power Steering Oil Pressure SW
R 1 Radiator Fan Motor
R 21 Rear Washer Motor
S 1 Starter
S 2 Starter
S 27 Skid Control ECU with Actuator
T 1 Theft Deterrent Horn
T 3 Turbine Speed Sensor
T 13 Throttle Control Motor
Throttle Position Sensor
V 2 VSV (ACIS No.2)
V 4 VSV (EVAP)
V 5 VSV (ACM)
V 6 VVT Sensor LH
V 7 VVT Sensor RH
W 1 Washer Level Sensor
W 3 Water Temp. SW No.1
W 4 Water Temp. SW No.2
W 5 Wireless Door Lock Buzzer

2005 HIGHLANDER (EWD592U)
41
G
Position of Parts in Engine Compartment
[2AZ-FE]
I 2 Ignition Coil and Igniter No.1
I 3 Ignition Coil and Igniter No.2
I 4 Ignition Coil and Igniter No.3
I 5 Ignition Coil and Igniter No.4
I 8 Injector No.1
I 9 Injector No.2
I 10 Injector No.3
I 11 Injector No.4
J 1 Junction Connector
J 2 Junction Connector
J 3 Junction Connector
J 4 Junction Connector
K 1 Knock Sensor (Bank 1)
M 1 Mass Air Flow Meter
N 1 Noise Filter (Ignition System)
O 1 Oil Pressure SWP 1 A/T Indicator SW
Back-Up Light SW
Park/Neutral Position SW
P 2 Power Steering Oil Pressure SW
R 1 Radiator Fan Motor
R 21 Rear Washer Motor
S 1 Starter
S 2 Starter
S 27 Skid Control ECU with Actuator
T 3 Turbine Speed Sensor
T 13 Throttle Control Motor
Throttle Position Sensor
V 4 VSV (EVAP)
W 1 Washer Level Sensor
W 5 Wireless Door Lock Buzzer

051ZJ-16
A53766
E7E8E9E6E5
05-32
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
222 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TERMINALS OF ECM
HINT:
Each ECM terminal's standard voltage is shown in the table below.
In the table, first follow the information under ºConditionº. Next look under ºSymbols (Terminal No.)º for the
terminals to be inspected. The standard voltage between the terminals is shown under ºSpecific Conditionº.
Use the illustration above as a reference for the ECM terminals.
Symbols (Terminal No.)Wiring ColorTerminal DescriptionConditionSpecified Condition
BATT (E5-3) - E1 (E9-1)BR - BR
Battery (for measuring
battery voltage and for
ECM memory)
Always9 to 14 V
+BM (E6-6) - E1 (E9-1)W - BRPower source of throttle
motorAlways9 to 14 V
IGSW (E5-9) - E1 (E9-1)P - BRIgnition switchIgnition switch ON9 to 14 V
+B (E5-1) - E1 (E9-1)W- BRPower source of ECMIgnition switch ON9 to 14 V
+B2 (E5-2) - E1 (E9-1)W- BRPower source of ECMIgnition switch ON9 to 14 V
OC1+ (E9-16) - OC1- (E9-15)G-W - G-RCamshaft timing oil con-
trol valve (OCV)Ignition switch ONPulse generation
(see page 05-55)
MREL (E5-8) - E1 (E9-1)B - BREFI relayIgnition switch ON9 to 14 V
VC (E7-18) - E2 (E7-28)Y - BRPower source of sensor
(specific voltage)Ignition switch ON4.5 to 5.5 V
VG (E7-30) - EVG (E7-29)R - L-WMass air flow meterIdling, shift lever position P or N
position, A/C switch OFF0.5 to 3.0 V
THA (E7-20) - E2 (E7-28)L-B - BRIntake air temperature
sensorIdling, intake air temp. 20°C (68°F)0.5 to 3.4 V
THW (E7-19) - E2 (E7-28)G-B - BREngine coolant tempera-
ture sensorIdling, engine coolant temp. 80°C
(176°F)0.2 to 1.0 V
VTA1 (E7-21) - E2 (E7-28)B-W - BRThrottle position sensor
(for engine control)Ignition switch ON, accelerator ped-
al released0.3 to 1.0 V
VTA1 (E7-21) - E2 (E7-28)B-W - BRThrottle position sensor
(for engine control)Ignition switch ON, accelerator ped-
al depressed3.2 to 4.9 V
VTA2 (E7-31) - E2 (E7-28)B-R - BR
Throttle position sensor
(for sensor malfunction
detection)Ignition switch ON, accelerator ped-
al released2.1 to 3.1 V
VTA2 (E7-31) - E2 (E7-28)B-R - BR
Throttle position sensor
(for sensor malfunction
detection)Ignition switch ON, accelerator ped-
al depressed4.5 to 5.5 V
VPA (E5-22) - EPA (E5-28)B - R
Accelerator pedal position
sensor (for engine con-
trol)Ignition switch ON, accelerator ped-
al released0.5 to 1.1 V
VPA (E5-22) - EPA (E5-28)B - R
Accelerator pedal position
sensor (for engine con-
trol)Ignition switch ON, accelerator ped-
al depressed2.6 to 4.5 V
VPA2 (E5-23) - EPA2 (E5-29)W - BR
Accelerator pedal position
sensor (for sensor mal-
function detection)Ignition switch ON, accelerator ped-
al released1.2 to 2.0 V