oil pressure TOYOTA SEQUOIA 2001 Service Manual PDF

AC1KZ±05
I21361
3
3
I21362
12
AC±54
± AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
3781 Author: Date:
2005 SEQUOIA (RM1146U)
COMPRESSOR AND MAGNETIC
CLUTCH
ON±VEHICLE INSPECTION
1. SET MANIFOLD GAUGE SET (See page AC±18)
2. START ENGINE
3. INSPECT COMPRESSOR FOR METALLIC SOUND
Check if a metallic sound can be heard from the compressor
when the A/C switch is on.
If a metallic sound cannot be heard, replace the compressor as-
sembly.
4. INSPECT REFRIGERANT PRESSURE
(See page AC±3)
5. STOP ENGINE
6. INSPECT VISUALLY FOR LEAKAGE OF REFRIGER-
ANT FROM SAFETY SEAL
Using a gas leak detector, check for leakage of refrigerant.
If there is any leakage, replace the compressor assembly.
7. REMOVE MANIFOLD GAUGE SET
(See page AC±19)
8. CHECK FOR LEAKAGE OF GREASE FROM CLUTCH
BEARING
9. CHECK FOR SIGNS OF OIL ON PRESSURE PLATE
If necessary, repair or replace.
10. INSPECT MAGNETIC CLUTCH BEARING FOR NOISE
(a) Start the engine.
(b) Check if abnormal noise is heard from near the compres-
sor when the A/C switch is OFF.
If abnormal noise is being emitted, replace the magnetic clutch.
11. INSPECT MAGNETIC CLUTCH OPERATION
(a) Disconnect the connector.
(b) Connect the positive (+) lead from the battery to terminal
3 and the negative (±) lead to body ground.
(c) Check that the magnetic clutch is energized.
If operation is not as specified, replace the magnetic clutch.
12. INSPECT COMPRESSOR LOCK SENSOR RESIS-
TANCE
(a) Disconnect the connector.
(b) Measure the resistance between terminals 1 and 2.
Standard resistance:
165 to 205 W at 20°C (68°F)
If resistance is not as specified, replace the compressor.

AC1LT±05
I21452
± AIR CONDITIONINGPRESSURE SWITCH
AC±93
3820 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
1. DISCHARGE REFRIGERANT FROM REFRIGERATION
SYSTEM
HINT:
At the time of installation, refer to the following:

Evacuate air from the refrigeration system.

Charge the system with refrigerant and inspect for leak-
age of refrigerant.
Specified amount:
Single A/C: 750 ± 50 g (26.45 ± 1.76 oz.)
Dual A/C: 1050 ± 50 g (37.03 ± 1.76 oz.)
2. REMOVE PRESSURE SWITCH FROM LIQUID TUBE
Disconnect the connector and remove the pressure switch.
Torque: 10 N´m (100 kgf´cm, 7 ft´lbf)
HINT:

Being careful not to deform the tube, lock the switch
mounted on the tube with an open end wrench and re-
move the switch.

At the time of installation, refer to the following:
Lubricate a new O±ring with the compressor oil and install
it to the switch.

05_SEQUOIA_U (L/O 0408)
8
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
1. Service reminder indicators and
indicator lights
2. Oil pressure gauge
3. Tachometer4. Speedometer
5. Fuel gauge
6. Engine coolant temperature gauge7. Trip meter reset knob
8. Odometer and two trip meters
9. Height control indicator lights
10. Volt meter
Instrument cluster overview

Ty p e A

05_SEQUOIA_U (L/O 0408)
9
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
1. Service reminder indicators and
indicator lights
2. Oil pressure gauge
3. Tachometer4. Speedometer
5. Fuel gauge
6. Engine coolant temperature gauge7. Trip meter reset knob
8. Odometer and two trip meters
9. Height control indicator lights
10. Volt meter
Ty p e B

05_SEQUOIA_U (L/O 0408)
10
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
or
Driver 's seat belt reminder light*
1
Discharge warning light*
1
Low fuel level warning light*
1
Brake system warning light*
1
Malfunction indicator lamp*
1
Anti±lock brake system warning light*
1
Automatic transmission fluid temperature
warning light (four±wheel drive models)*
1
SRS warning light*
1
Open door warning light*
1
Low windshield washer fluid level warning
light*
1
Front passenger 's seat belt reminder light*
1
Vehicle stability control system/traction control
system (two±wheel drive models) or active
traction control system (four±wheel drive
models) warning light
*
1
Low tire pressure warning light*
1
Engine oil replacement reminder light*
1
Indicator symbols on the instrument panel

05_SEQUOIA_U (L/O 0408)
157
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
OPERATION OF INSTRUMENTS AND
CONTROLS
Gauges, Meters and Service reminder indicators
Fuel gauge158 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine coolant temperature gauge158 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil pressure gauge159 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vo ltme te r160 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tachometer160 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Odometer and two trip meters160 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service reminder indicators and warning buzzers162 . . . . . . . . . . . . . .
SECTION 1± 6

05_SEQUOIA_U (L/O 0408)
159
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)

Idling for a long period with the air
conditioning on in stop±and±go traffic.

Towing a trailer.
NOTICE

Do not remove the thermostat in
the engine cooling system as this
may cause the engine to overheat.
The thermostat is designed to con-
trol the flow of coolant to keep the
temperature of the engine within
the specified operating range.

Do not continue driving with an
overheated engine. See ªIf your ve-
hicle overheatsº on page 386 in
Section 4.
Normal
driving
Idling
The oil pressure gauge indicates engine
oil pressure when the ignition switch is
on. Check it while driving to make sure
that the needle is in the proper range.
If the oil pressure should stay below the
normal range, pull off the road to a safe
place and stop the engine immediately.
Call a Toyota dealer or qualified repair
shop for assistance.
Oil pressure may not build up when the
oil level is too low. The oil pressure
gauge is not designed to indicate oil level,
and the oil level must be checked using
the level dipstick.
NOTICE
Do not drive the vehicle with the oil
pressure below the normal range until
the cause is fixedÐit may ruin the
engine.
Oil pressure gauge

05_SEQUOIA_U (L/O 0408)
169
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
(l) Low Tire Pressure Warning Light
This light warns that the tire pressure of
one or more of your tires (including the
spare tire) is low. The light comes on
when the ignition key is turned to the
ªONº position. It goes off after a few sec-
onds. This indicates that the tire pressure
warning system is functioning properly.
If the warning light comes on, stop your
vehicle in a safe place as soon as pos-
sible and check that the inflation pressure
of all tires (including the spare tire) is as
specified on the tire and loading informa-
tion label. (See ªChecking tire inflation
pressureº on page 429 in Section 7±2.)
The light should go off a few minutes after
the tire pressure is adjusted.
If the warning light blinks, the tire pres-
sure warning system may be malfunction-
ing. Contact your Toyota dealer.
For details, see ªTire pressure warning
systemº on page 198 in Section 1±7.
(m) Low Windshield Washer Fluid Level
Warning Light
This light warns that the windshield wash-
er fluid level is too low. Add washer fluid
at your earliest opportunity. (For instruc-
tions, see ªAdding washer fluidº on page
444 in Section 7±3.)(n) Engine Oil Replacement Reminder
Light (for vehicles sold in U.S.A.)
This light acts as a reminder to replace
the engine oil.
This light will come on when the ignition
key is turned to ªONº and will go off after
about a few seconds.
When you drive for about 7200 km (4500
miles) after the engine oil replacement,
this light illuminates for about 3 seconds
and then flashes for about 12 seconds
with the ignition key turned to the ªONº
position. If you continue driving without
replacing the engine oil, and if the dis-
tance driven exceeds 8000 km (5000
miles), the light will come on after the
ignition key is turned to ªONº position.
The light will remain on thereafter.
If the light is flashing, we recommend that
you replace the engine oil at an early
opportunity depending on the driving and
road conditions. If the light comes on,
replace it as soon as possible.The system must be reset after the en-
gine oil replacement. Reset the system by
the following procedure:
1. Turn the ignition key to the ªACCº or
ªLOCKº position with the odometer
reading shown. (For details, see
ªOdometer and two trip metersº on
page 160 in this Section.)
2. Turn the ignition key to the ªONº posi-
tion while holding down the trip meter
reset knob.
Hold down the knob for at least 5 sec-
onds. The odometer indicates ª000000º
and the light goes off.
If the system fails to reset, the light will
continue flashing.
(o) Key Reminder Buzzer
This buzzer acts as a reminder to remove
the key when you open the driver's door
with the ignition key in the ªACCº or
ªLOCKº position.

05_SEQUOIA_U (L/O 0408)
170
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
CHECKING SERVICE REMINDER
INDICATORS (except the low fuel level
warning light and low windshield
washer fluid level warning light)
1. Apply the parking brake.
2. Open one of the side doors or back
door.
The open door warning light should
come on.
3. Close the door.
The open door warning light should go
off.
4. Turn the ignition key to ªONº, but do
not start the engine.
All the service reminder indicators ex-
cept the open door warning light should
come on. The ªABSº and ªVSC TRACº
warning lights, low tire pressure warn-
ing light and engine oil replacement
reminder light go off after a few sec-
onds. The SRS warning light goes off
after about 6 seconds. (The ªTRAC
OFFº (two±wheel drive models) or
ªVSC OFFº (four±wheel drive models),
ªRSCA OFFº indicator lights, height
control indicator light, manual control
mode indicator light and slip indicator
light also come on and go off after a
few seconds.)If any service reminder indicator or warn-
ing buzzer does not function as described
above, have it checked by your Toyota
dealer as soon as possible.

05_SEQUOIA_U (L/O 0408)
339
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
CAUTION

Avoid inhaling the engine exhaust.
It contains carbon monoxide, which
is a colorless and odorless gas. It
can cause unconsciousness or even
death.

Make sure the exhaust system has
no holes or loose connections. The
system should be checked from
time to time. If you hit something,
or notice a change in the sound of
the exhaust, have the system
checked immediately.

Do not run the engine in a garage
or enclosed area except for the
time needed to drive the vehicle in
or out. The exhaust gases cannot
escape, making this a particularly
dangerous situation.

Do not remain for a long time in a
parked vehicle with the engine run-
ning. If it is unavoidable, however,
do so only in an unconfined area
and adjust the heating or cooling
system to force outside air into the
vehicle.

Keep the back door and back win-
dow closed while driving. An open
or unsealed back door and back
window, 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 and back
window closed. Have the cause im-
mediately 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.
Engine exhaust cautionsFacts about engine oil
consumption