2001 TOYOTA HIGHLANDER oil pressure

A01037
- ENGINE MECHANICALENGINE (2AZ-FE)
14-3
2496 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
9. INSPECT COMPRESSION
(a) Warm up and stop the engine.
(b) Disconnect the injector connectors.
(c) Remove the ignition coils.
(d) Remove the spark plugs.
(e) Check the cylinder compression pressure.
(1) Insert a compression gauge into the spark plug
hole.
(2) Fully open the throttle.
(3) While cranking the engine, measure the compres-
sion pressure.
Compression pressure:
1,360 kPa (13.9 kgf/cm
2, 198 psi)
Minimum pressure: 0.98 MPa (10 kgf/cm
2, 142 psi)
Difference between each cylinder:
100 kPa (1.0 kgf/cm
2, 14 psi)
NOTICE:

Always use a fully charged battery to obtain engine
speed of 250 rpm or more.

Check other cylinder's compression pressure in the
same way.

This measurement must be done as quickly as pos-
sible.
(4) If the cylinder compression is low, pour a small
amount of engine oil into the cylinder through the
spark plug hole and inspect again.
HINT:

If adding oil increases the compression, the piston rings
and/or cylinder bore may be worn or damaged.

If pressure stays low, a valve may be stuck or seated im-
properly, or there may be leakage in the gasket.
10. INSPECT CO/HC
(a) Start the engine.
(b) Rev the engine at 2,500 rpm for approximately 180 seconds.
(c) Insert CO/HC meter testing probe at least 40 cm (1.3 ft) into the tailpipe during idling.
(d) Immediately check CO/HC concentration at idle and/or 2,500 rpm.
HINT:

Complete the measuring within 3 minutes.

Check regulations and restrictions in your area when performing 2 mode CO/HC concentration testing
(engine check at both idle speed and at 2,500 rpm).
(e) If the CO/HC concentration does not comply with regulations, troubleshoot in the order given below.
(1) Check A/F sensor operation (see page 12-3).
(2) See the table below for possible causes, and then inspect and repair.

100FT-04
321 4 5
-20
020 40 60
80100 0.1 0.2 0.3 0.51 235 1020 30
Temperature
C (
F)
Resistance kW
(-4) (32) (68) (140)(104) (212)(176)
Air
E2
THAVG
E2G+B
A93068
12
Valve
A50377
- ENGINE CONTROL SYSTEMSFI SYSTEM (3MZ-FE)
10-13
2371 Author
: Date
:
INSPECTION
1. INSPECT MASS AIR FLOW METER
(a) Check the output voltage.
(1) Apply battery voltage across terminals 1 (+B) and 2
(E2G).
(2) Connect the positive (+) tester probe to terminal
VG, and negative (-) tester probe to terminal E2G.
(3) Blow air into the Mass Air Flow (MAF) meter, and
check that the voltage fluctuates.
(b) Measure the resistance between terminals 4 (THA) and
5 (E2).
Standard:
ConditionSpecified Condition
-20
C (-4
F)13.6 to 18.4 kW
20
C (68
F)2.21 to 2.69 kW
60
C (140
F)0.493 to 0.667 kW
If the result is not as specified, replace the MAF meter.
2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE
ASSY
(a) Measure the resistance between the terminals.
Standard: 6.9 to 7.9 W at 20
C (68
F)
If the result is not as specified, replace the OCV assy.
(b) Connect the battery's positive (+) lead to terminal 1 and
negative (-) lead to terminal 2, and check the movement
of the valve.
NOTICE:
Confirm that the valve moves freely and does not become
stuck in any position.
If necessary, replace the OCV assy.
HINT:
If the valve cannot return properly because of foreign matter, a
small pressure leak in the advanced direction may occur and a
DTC will be output.

010QJ-02
12
3
4 6
5
D25016
- INTRODUCTIONREPAIR INSTRUCTION
01-5
5 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
REPAIR INSTRUCTION
PRECAUTION
(b) HINTS ON OPERATIONS
1Looks
Always wear a clean uniform.

Hat and safety shoes must be worn.
2Vehicle protection
Prepare a grille cover, fender cover, seat cover and floor mat before starting the operation.
3Safe operation

When working with 2 or more persons, be sure to check safety for one another.

When working with the engine running, pay attention to providing ventilation for exhaust fumes in the
workshop.

If working on high temperature, high pressure, rotating, moving, or vibrating parts, wear appropriate safety
equipment and take extra care not to injure yourself or others.

When jacking up the vehicle, be sure to support the specified location with a safety stand.

When lifting up the vehicle, use appropriate safety equipment.
4Preparation of tools and
measuring gauge
Before starting operation, prepare a tool stand, SST, gauge, oil, shop rag and parts for replacement.
5
Removal and installation,
disassembly and assem-
bly operations

Diagnose with a thorough understanding of proper procedures and of the reported problem.

Before removing the parts, check the general condition of the assembly and for deformation and damage.

When the assembly is complicated, take notes. For example, note the total number of electrical connections,
bolts, or hoses removed. Add matchmarks to insure re-assembly of components in the original positions.
Temporarily mark hoses and their fittings, if needed.

Clean and wash the removed parts if necessary and assemble them after a thorough check.
6Removed parts

Place the removed parts in a separate box to avoid mixing them up with the new parts or contaminating the
new parts.

As for non-reusable parts such as a gasket, an O-ring, and a self-locking nut, replace them with new ones
following the instructions in this manual.

Retain the removed parts for customer inspection, if requested.

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
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

2005 HIGHLANDER (EWD592U)
M
5
678
31 HIGHLANDER (
Cont' d)(
Cont. next page)
2IR2
5BH111 IR2
3K 23B 6
IBRight I nst rument
Panel Brace
OOPY
V
BR
10 IF2
8IC3
EARight Fr ont
Fender Apron A2 1
BR P Y- B
Y- B
W- B Engine Control
Sys tem< 2- 4> < 3- 4>
VSC and Tir e Pres sure
Warning System< 15- 9>
Combination Meter
A A14 BH1
D D
P23
O
O
13 A
B 7 A 17 11 B 10 B 4B 12 B 9A
VSC
ABS
Brake
Malfunction
Indicator Lamp
Washer Level CRUISE
Oil Pressure
Char ge
ECT SNOW
Fue l
L
2
D
N
R
P
Do or
Buzzer 3 O/ D OF F A/T
OIL TEMP
Air bag
Driver ' s
Seat BeltSlip MAINT REQDTi r e Ai r
Pressure
(
USA)(
US A)
E E P
9IL1PSB
A
W- B
B
P
W- B
TRAC OFF (
2WD)(
2WD)
* 1 : 3MZ- FE
(
*1)(
*1)
3B 1211 AR
F12J 3
W 1
J13
C11(
A)
, C12(
B)
J 6
Combinat ion Meter
Fuel SenderJunction
Connector
Junct ion
Connect or
Junct ion
Connect or Washer Level
Se nso r

L PART NUMBER OF CONNECTORS
Code Part Name Part NumberCodePart Name Part Number
Note : Not all of the above part numbers of the connector are established for the supply.
2005 HIGHLANDER (EWD592U)
342
A 1A/C Ambient Temp. Sensor90980-1 1070
A2A/C Lock Sensor90980-1 1016A 2A/C Magnetic Clutch90980-1 1016
A 3Pressure SW90980-10943
A 4ABS Speed Sensor Front LH90980-1 1075A 5ABS Speed Sensor Front RH90980-11075
A 6Air Fuel Ratio Sensor (Bank 1 Sensor 1)90980-1 1178A 7Air Fuel Ratio Sensor (Bank 2 Sensor 1)90980-11178
A 8Airbag Sensor Front LH90980-1 1856A 9Airbag Sensor Front RH90980-11856
A10A/C Control Assembly90980-1 1392
A11A/C Control Assembly90980-1 1391
A12A/C Solar Sensor90980-1 1918
A13Air Inlet Control Servo Motor
A14Air Mix Control Servo Motor90980-1 1909
A15Air Vent Mode Control Servo Motor
A16
Airbag Sensor Assembly (w/ Curtain Shield
Airbag)82824-50160
A16Airbag Sensor Assembly (w/o Curtain
Shield Airbag)90980-1 1869
A17Airbag Sensor Assembly90980-1 1872
A18
Airbag Sensor Assembly (w/ Curtain Shield
Airbag)82824-50150
A18Airbag Sensor Assembly (w/o Curtain
Shield Airbag)90980-1 1867
A19Airbag Squib (Front Passenger Airbag
Assembly)
90980-12160
A20Airbag Squib (Steering Wheel Pad)
90980 12160
A21Antenna Amplifier (Front)90980-10871
A22Ashtray Illumination90980-10824
A23Automatic Light Control Sensor90980-1 1107
A24ABS Speed Sensor Rear LH90980-1 1060A25ABS Speed Sensor Rear RH90980-1 1060
A26Antenna Amplifier (Rear)90980-10871
A27Accel Position Sensor90980-1 1858
B 4Brake Warning SW90980-1 1207
B 5Blower Control SW90980-10877
B 6Blower Motor90980-10385
B 7Blower Motor Control90980-1 1676
B 8Blower Resister90980-1 1136
B 9Body ECU90980-1 1957
B10Body ECU90980-1 1956
B11Body ECU90980-1 1955
B12Body ECU90980-1 1954
B13Brake Pedal Load Sensing SW90980-10860
B14Back Door Key Lock and Unlock SW90980-1 1489
B15Back Door Lock Motor90980-1 1292B15Back Door Unlock Detection SW90980-1 1292
B17Buckle SW (Front Passenger's Side)90980-1 1019
B19Buckle SW LH90980-10942B19Seat Position Airbag Sensor LH90980-10942
C 1Camshaft Position Sensor90980-10947
C 2Camshaft Timing Control Valve
C 3Camshaft Timing Oil Control Valve LH90980-1 1162
C 4Camshaft Timing Oil Control Valve RH
C 5Condenser Fan Motor90980-10928
C 6Counter Gear Speed Sensor90980-1 1156
C 7Crankshaft Position Sensor90980-10947
C 9Cigarette Lighter90980-10760
C10Cigarette Lighter Illumination90980-1 1148
C11Combination Meter90980-1 1392
C12Combination Meter90980-1 1391
C13Combination SW90980-1 1672
C14Combination SW90980-1 1594
C16Combination SW90980-12183
C17Charcoal Canister Assembly90980-12380
C18Curtain Shield Airbag Squib LH90980-12219C19Curtain Shield Airbag Squib RH90980-12219
D 2Diode (Cooling Fan)90980-10962
D 3Data Link Connector 390980-1 1978
D 4Diode (Rear Interior Light)90980-10962
D 5Door Courtesy Light Front LH90980-1 1148D 6Door Courtesy Light Front RH90980-1 1148
D 7Door Courtesy SW Front LH
D 8Door Courtesy SW Front RH90980-10871D 9Door Courtesy SW Rear LH90980-10871
D10Door Courtesy SW Rear RH
D11Door Lock Control SW90980-10797
Door Key Lock and Unlock SW Front LH
D12Door Lock Motor Front LH
Door Unlock Detection SW Front LH90980-1 1858Door Key Lock and Unlock SW Front RH90980-11858
D13Door Lock Motor Front RH
Door Unlock Detection SW Front RH
D14Door Lock Motor Rear LHD14Door Unlock Detection SW Rear LH90980-1 1150
D15Door Lock Motor Rear RH90980-11150
D15Door Unlock Detection SW Rear RH
D16Diode (Rear Wiper)90980-10962
E 1Electronically Controlled Transmission
Solenoid90980-12326
E2Engine Coolant Temp. Sensor (2AZ-FE)90980-1 1061E 2Engine Coolant Temp. Sensor (3MZ-FE)90980-10737
E 3Engine Hood Courtesy SW90980-1 1189

L PART NUMBER OF CONNECTORS
Code Part Name Part NumberCodePart Name Part Number
Note : Not all of the above part numbers of the connector are established for the supply.
2005 HIGHLANDER (EWD592U)
344
N 4Navigation ECU90980-1 1923
O 1Oil Pressure SW90980-1 1363
O 3Option Connector 190980-10908O 4Option Connector 290980-10908
O 5Overhead J/B90980-12183
O 6Occupant Classification ECU90980-12356
O 7Occupant Classification ECU90980-12357
O 8Occupant Classification Sensor Front LH90980-12353
O 9Occupant Classification Sensor Front RH90980-12354O10Occupant Classification Sensor Rear LH90980-12354
O11Occupant Classification Sensor Rear RH90980-12353
A/T Indicator SW
P 1Back-Up Light SW90980-12362
Park/Neutral Position SW
P 2Power Steering Oil Pressure SW90980-1 1428
P 3Parking Brake SW90980-10871
P 5Power Window Master SW with ECU90980-12166
P 6Power Window Motor Front LH
P 7Power Window Motor Front RH90980-10797P 8Power Window Motor Rear LH90980-10797
P 9Power Window Motor Rear RH
P10Power Window SW Front RH
P11Power Window SW Rear LH90980-10799
P12Power Window SW Rear RH
P13Pretensioner LH90980-12253P14Pretensioner RH90980-12253
P15Power Seat Control SW (Driver's Seat
Control)90980-10997
P16Power Seat Control SW (Driver's Seat
Lumbar Support Control)90980-10789
P18Power Seat Motor (Driver's Seat Lumbar
Support Control)
P20Power Seat Motor (Driver's Seat Reclining
Control)90980-10825
P21Power Seat Motor (Driver's Seat Slide
Control)
P22Pressure SW90980-10906
P23Power Outlet (110V)90980-10601
P24Power Seat Control SW (Front Passenger's
Seat Control)90980-10997
P25Power Seat Motor (Driver's Seat Front Tilt
Control)
P26Power Seat Motor (Driver's Seat Lifter
Control)
90980-10825
P27Power Seat Motor (Front Passenger's Seat
Reclining Control)90980-10825
P28Power Seat Motor (Front Passenger's Seat
Slide Control)
R 1Radiator Fan Motor90980-10928
R 2Radio and Player90980-10996
R 3Radio and Player90980-10997
R 4Radio and Player90980-12038
R 5Remote Control Mirror SW90980-1 1657
R 6Room Temp. Sensor90980-1 1918
R 7Rear Combination Light LH90980-10797R 8Rear Combination Light RH90980-10797
R 9Rear Door Speaker LH90980-10935R10Rear Door Speaker RH90980-10935
R11Rear Interior Light90980-10908
R12Rear Interior Light SW90980-10860
R13Rear Power Outlet90980-10760
R14Rear Side Marker Light LH90980-1 1159
R15Rear Side Marker Light RH90980-10534
R16Rear Window Defogger90980-1 1259R17Rear Window Defogger90980-11259
R18Rear Wiper Motor90980-10908
R19Remote Control Mirror LH90980-10798R20Remote Control Mirror RH90980-10798
R21Rear Washer Motor90980-1 1051
R22Radio and Player90980-12183
R23Radio and Player90980-12259
R24Rear Heater Main SW90980-10933
R25Rear Heater Blower Motor90980-10795
R26Rear Heater Blower SW90980-1 1527
R27Rear Heater Relay82660-53010
R28Rear Seat Entertainment Display90980-12153R29Rear Seat Entertainment ECU90980-12153
R30Rear Seat Entertainment ECU90980-12200
R31Rear Seat Entertainment ECU90980-12259
S 1Starter90980-1 1400
S 2Starter90980-09463
S 3Seat Heater SW LH90980-10957
S 4Seat Heater SW RH90980-10933
S 5Shift Lock ECU90980-1 1319
S14Steering Sensor82824-45030
S15Stop Light SW90980-1 1118
S16Side Airbag Sensor Front LH90980-12225S17Side Airbag Sensor Front RH90980-12225
S18Side Airbag Squib LH90980-1 1864S19Side Airbag Squib RH90980-1 1864
S20Sliding Roof Control ECU90980-10801
S22Stereo Power Amplifier90980-10807
S23Stereo Power Amplifier90980-10848
S25Seat Heater LH90980-10797S26Seat Heater RH90980-10797
S27Skid Control ECU with Actuator90980-12297