2001 TOYOTA HIGHLANDER oil pressure

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2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)

Keep the back door closed while
driving. An open or unsealed back
door may cause exhaust gases to
be drawn into the vehicle.

To allow proper operation of your
vehicle's ventilation system, keep
the inlet grilles in front of the wind-
shield clear of snow, leaves, or oth-
er obstructions.

If you smell exhaust fumes in the
vehicle, drive with the windows
open and the back door closed.
Have the cause immediately located
and corrected.
FUNCTIONS OF ENGINE OIL
Engine oil has the primary functions of
lubricating and cooling the inside of the
engine, and plays a major role in main-
taining the engine in proper working order.
ENGINE OIL CONSUMPTION
It is normal that an engine should con-
sume some engine oil during normal
engine operation. The causes of oil
consumption in a normal engine are as
follows.

Oil is used to lubricate pistons, piston
rings and cylinders. A thin film of oil
is left on the cylinder wall when a pis-
ton moves downwards in the cylinder.
High negative pressure generated when
the vehicle is decelerating sucks some
of this oil into the combustion chamber.
This oil as well as some part of the oil
film left on the cylinder wall is burned
by the high temperature combustion
gases during the combustion process.

Oil is also used to lubricate the stems
of the intake valves. Some of this oil
is sucked into the combustion chamber
together with the intake air and is
burned along with the fuel. High tem-
perature exhaust gases also burn the
oil used to lubricate the exhaust valve
stems.The amount of engine oil consumed de-
pends on the viscosity of the oil, the
quality of the oil and the conditions the
vehicle is driven under.
More oil is consumed by high- speed driv-
ing and frequent acceleration and decel-
eration.
A new engine consumes more oil, since
its pistons, piston rings and cylinder walls
have not become conditioned.
Oil consumption: Max. 1.0 L per 1000
km (1.1 qt./600 miles, 0.9 Imp. qt./600
miles)
When judging the amount of oil con-
sumption, note that the oil may become
diluted and make it difficult to judge
the true level accurately.
As an example, if a vehicle is used for
repeated short trips, and consumes a nor-
mal amount of oil, the dipstick may not
show any drop in the oil level at all, even
after 1000 km (600 miles) or more. This
is because the oil is gradually becoming
diluted with fuel or moisture, making it
appear that the oil level has not changed.
The diluting ingredients evaporate out
when the vehicle is then driven at high
speeds, as on an expressway, making it
appear that oil is excessively consumed
after driving at high speeds.
Facts about engine oil
consumption

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IMPORTANCE OF ENGINE OIL LEVEL
CHECK
One of the most important points in prop-
er vehicle maintenance is to keep the en-
gine oil at the optimum level so that oil
function will not be impaired. Therefore, it
is essential that the oil level be checked
regularly. Toyota recommends that the oil
level be checked every time you refuel
the vehicle.
NOTICE
Failure to check the oil level regularly
could lead to serious engine trouble
due to insufficient oil.
For detailed information on oil level check,
see Checking the engine oil levelº on
page 380 in Section 7- 2.
Your engine is fitted with iridium- tipped
spark plugs.
NOTICE
Use only iridium- tipped spark plugs
and do not adjust gaps for your en-
gine performance and smooth drive-
ability.
The tandem master cylinder brake system
is a hydraulic system with two separate
sub- systems. If either sub- system should
fail, the other will still work. However, the
pedal will be harder to press, and your
stopping distance will increase. Also, the
brake system warning light may come on.
CAUTION
Do not drive your vehicle with only a
single brake system. Have your
brakes fixed immediately.
BRAKE BOOSTER
The brake booster uses engine vacuum to
power- assist the brakes. If the engine
should quit while you are driving, you can
bring the vehicle to a stop with normal
pedal pressure. There is enough reserved
vacuum for one or two stopsÐbut no
more!
Iridium- tipped spark plugs Brake system

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Ti r e relat ed ter mMeaning
Accessory weight
the combined weight (in excess of those standard items which may be
replaced) of automatic transmission, power steering, power brakes, power
windows, power seats, radio, and heater, to the extent that these items
are available as factory- installed equipment (whether installed or not)
Cold tire inflation pressure
tire inflation pressure when the vehicle has been parked for at least 3
hours or more, or it has not been driven more than 1.5 km or 1 mile
under that condition
Curb weight
the weight of a motor vehicle with standard equipment including the
maximum capacity of fuel, oil, and coolant, and, if so equipped, air
conditioning and additional weight optional engine
Intended outboard sidewall
(A) the sidewall that contains a whitewall, bears white lettering or bears
manufacturer, brand, and/or model name molding that is higher or
deeper than the same molding on the other sidewall of the tire orIntended outboard sidewalldeeper than the same molding on the other sidewall of the tire, or
(B) the outward facing sidewall of an asymmetrical tire that has a particular
side that must always face outward when mounted on a vehicle
Maximum inflation pressurethe maximum cold inflation pressure to which a tire may be inflated and it
is shown on the sidewall of the tire
the sum ofÐthe sum ofÐ
(a)curb weight;
Maximum loaded vehicle weight
(a) curb weight
(b) accessory weight;Maximum loaded vehicle weight(b) accessory weight
(c) vehicle capacity weight; and
(d) d ti ti i ht
() y g
(d) production options weight
ÐGlossary of tire terminology

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If engine speed does not increase when
the accelerator pedal is depressed, there
may be a problem somewhere in the elec-
tronic throttle control system.
At this time, vibration may occur. Howev-
er, if you depress the accelerator pedal
more firmly and slowly, you can drive your
vehicle at low speeds. Have your vehicle
checked by your Toyota dealer as soon as
possible.
Even if the abnormality of the electronic
throttle control system is corrected during
low speed driving, the system may not be
recovered until the engine is stopped and
the ignition key is turned to ACCº or
LOCKº position.
CAUTION
Be especially careful to prevent erro-
neous pedal operation.
If your engine coolant temperature
gauge indicates overheating, if you ex-
perience a loss of power, or if you hear
a loud knocking or pinging noise, the
engine has probably overheated. You
should follow this procedure...
1. Pull safely off the road, stop the ve-
hicle and turn on your emergency
flashers. Put the transmission in Pº
and apply the parking brake. Turn off
the air conditioning if it is being used.
2. If coolant or steam is boiling out of the
radiator or reservoir, stop the engine.
Wait until the steam subsides before
opening the hood. If there is no coolant
boiling over or steam, leave the engine
running and make sure the electric
cooling fan is operating. If it is not,
turn the ignition off.
CAUTION
To help avoid personal injury, keep
the hood closed until there is no
steam. Escaping steam or coolant is
a sign of very high pressure.
3. Look for obvious coolant leaks from the
radiator, hoses, and under the vehicle.
However, note that water draining from
the air conditioning is normal if it has
been used.
CAUTION
When the engine is running, keep
hands and clothing away from the
moving fan and engine drive belts.
4. If the coolant is leaking, stop the en-
gine immediately. Call a Toyota dealer
for assistance.
5. If there are no obvious leaks, check
the coolant reservoir. If it is dry, add
coolant to the reservoir while the en-
gine is running. Fill it about half full.
For the coolant type, see Coolant type
selectionº on page 383 in Section 7- 2.
CAUTION
Do not attempt to remove the radiator
cap when the engine and radiator are
hot. Serious injury could result from
scalding hot fluid and steam blown
out under pressure.
If you cannot increase engine
speedIf your vehicle overheats

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2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
Brake system warning light*
1
Discharge warning light*
1
Low engine oil pressure warning light*
1
Malfunction indicator lamp*
1
SRS warning light*
1
Driver 's seat belt reminder light*
1Open door warning light*
1
Automatic transmission fluid temperature
warning light*
1 (four- wheel drive models) or
Low windshield washer fluid level warning
light*
1
or
Vehicle stability control system warning light*
1
Anti- lock brake system warning light*
1or
Front passenger 's seat belt reminder light*
1
Low tire pressure warning light*
1
Indicator symbols on the instrument panel

2005 HIGHLANDER (EWD592U)
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T14IM1 2
1BI1
G- R
1
L
27
Y
12 BJ1(
*1) R- W R- W
A 21C 10
1
3A
VCP24 2
21 3
PSWHT1B OX1B
R- WL
BR
B
VPA2A
WBR
23
H10 W B
D 25 D21
R- Y
W
B 26 B 27
67IMO IMI
V B
W- R
IGF1
24 E3 1
2
2 1C 16 C15
2 1C 14 C13 1
2
G- W
L- R G- R
G- B
OC1+ OC1- OC2+ OC2-
W
R
NT+D 27
NT-D 35
NC+D 26
NC-D 34
W- G R- W
Ignition Coil and Igniters
EFIO EFIIB 2ACMG
O
MG CLT Relay
PTNK
IO1 3 GR
IM1 2
6IM1 * 1 : Shielded
3
(
*1)BR BR
29 A
EPA2
B
22 A
VPA EPAA 28
R
B- R
156 EPA2 VPA2 VCP2 EPA VPA
G
26 A
VCPA4 VCPA A27
3 14 2
HT2B OX2B
BR B- R
D 33 D29
W- L
B
E14(
*1)
BR
(
*1)
P P
A 12ELS2
G
IA1 7
5
EXCD
BR BR
GR H 6
BI1 2
Y
G
(
*2)(
*2)
* 2 : w/ Rear Seat Entertainment System
E 5(
A)
, E 6(
B)
, E 7(
E)
, E 8(
D)
, E 9(
C) Accel Position Sensor
Engine Control Module
Heated Oxygen Sensor
(
Bank 2 Sensor 2)
Heated Oxygen Sensor
(
Bank 1 Sensor 2)
Transponder Key
Computer
Tur bine Speed Sensor T 3
Counter Gear Speed
Sensor C 6
Voltage Inverter V15 Power Steering Oil
Pressure SW P 2 Camshaft Timing Oil
Contr ol Valve LH C 3 Camshaft Timing Oil
Contr ol Valve RH C 4 Vapor Pressure Sensor V11
+B E1 E2 +B
HT OX HT1B OX1B
PTNK
VCC GND

2005 HIGHLANDER (EWD592U)
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Engine Control for 3MZ-FE
G 14C RL
21
L
W- G
E16
6 EB1
A2A-
P
EB1
D 5D43 14 2 (
*1)
(
*1) (
*1) (
*1)
HA1A A2A+
R- W B- R
(
*1) (
*1)
A 7
HA2A A1A- A1A+ 3
D 22 D30
BR
Y
D 23 D31
L
R- W
R- L
IGT1
8E
P
IGT2
9E
Y- B
IGT3
10 E
L- Y
IGT4
11 E
G- Y
IGT5
12 E
L- R
IGT6
13 E
Ignition Coil
and Igniters
G
TRC+
31 A
Y
TRC-
25 A
Skid Control ECU
with Actuator
R- W R- W(
*1)
V 7
L
(
*1)
(
*1) (
*1)
2 1
(
*1)
2
1
V 6
C 7
6D
I 6 E05I 6
26 C
L
R
I 6
ECE 6C7 E 7 C 22E04
7
ED D
W- B
W- B
W- B
GGR
MOPS E01 E02 E03
(
*1)
B- W W- B W- B
W- B
G
C 25 C24 C27
(
*1)
1
O 1
Y- B
VV2+ NE+ NE- VV1+2
1 3 14 2
B- W B- RA 6
(
*1)R- W
BRP P
C 4
W- B
ME01
I 6
W- B
E 5(
A)
, E 6(
B)
, E 7(
E)
, E 8(
D)
, E 9(
C)
Air Fuel Ratio Sensor
(
Bank 1 Sensor 1)
Air Fuel Ratio Sensor
(
Bank 2 Sensor 1)
Crankshaft Position
Sensor
Engine Control Module
Generator
Oil Pressure SW
VVT Sensor LH
VVT Sensor RH
HT AF+ HT AF++B AF- +B AF-

2005 HIGHLANDER (EWD592U)
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S15
C 224L 3
B Y- B
O 1
A 292
BR
EPA2 EPA2
12
1+BM
W
B 6A27
VPA2
VPA2
W
210A
ETCS
3
23 A
MOPS
R 4M
A A
B
GY
17 31 24TRC-
C 10
17E 20A
STOP
1E 1
E 6
P 2
TRC+ 1 2
A
Y BR R- L
W- B W- B
E02 E01 PSW
25 STPB 19
EFNEO
V
2
2
E 16
NSW
B- R
E 17
STA
B
54
NP7. 5A
STARTER
EB2 3
E 7
B- R L B- R P 1
R
P PENG+
A30
R
ENG-
A
Skid Control ECU
with Actuator
W- B W- B
A 271
L
VCP2 VCP2
A 285
R
EPA EPA
A 226
B
VPA VPA
A 264
G
VCPA VCPA
B 27
B
IMI
B 26
V
IMO
EFIO EFII67
T1 4 2
IC1 4
R
4C
W- B
ME01
I 6
W- G
G 14C 21RL
L W- BW- B
NC- NC+ NT- NT+
W- GY R- WWT 3
C 6
D 261
2
D 34 35 D 2 1
27 D
E 5(
A)
, E 6(
B)
, E 7(
E)
, E 8(
D)
, E 9(
C) Fr om Power Source System (
See Page 62)
Accel Position Sensor
Counter Gear Speed
Sensor
Engi ne Control Module
Gen erat or
Oil Pressur e SWPark/Neutral
Position SW
Power Steering Oil
Pressure SW
Stop Light SW
Turbine Speed Sensor
Transponder Key Computer