1997 TOYOTA T100 cooling

57
NOTICE
Do not remove the thermostat inthe engine cooling system as this
may cause the engine to overheat. The thermostat is designed tocontrol the flow of coolant to keep
the temperature of the engine
within the specified operatingrange.
Do not continue driving with an
overheated engine. See If yourvehicle overheatsº in Part 4.
The oil pressure gauge indicates en-
gine oil pressure when the ignition 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 to 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 leveldipstick.
NOTICE
Do not drive the vehicle with oil pressure below the normal range
until the cause is fixed-it may ruin the engine.
Oil pressure gauge

101
Heating
For best results, set controls to:
Fan speed ÐAny setting except OFFº
Temperature Ð Towards WARM
(red zone)
Air intake ÐFRESH (outside air)
Air flow ÐFLOOR
Air conditioning ÐOFF
For quick heating, select recirculated
air for a few minutes. To keep the win-
dows from fogging, select fresh after the vehicle interior has been warmed.
Press the A/Cº button on for dehumid-
ified heating.
Choose floor/windshield air flow to heat the vehicle interior while defrost-ing or defogging the windshield. Air conditioning For best results, set controls to:
Fan speed ÐAny setting except OFFº
Temperature Ð Towards COLD
(blue zone)
Air intake ÐFRESH (outside air)
Air flow ÐPANEL
Air conditioning ÐON For quick cooling, move the air intake
selector to recirculate for a few min-utes.
Ventilation
For best results, set controls to:
Fan speed ÐAny setting except OFFº
Temperature Ð Towards COLD
(blue zone)
Air intake ÐFRESH (outside air)
Air flow ÐPANEL
Air conditioning ÐOFF
Defogging The inside of the windshield For best results, set controls to:
Fan speed ÐAny setting except OFFº
Temperature ÐTowards WARM
(red zone) to heat; COLD (blue zone) to
cool
Air intake ÐFRESH (outside air)
Air flow ÐWINDSHIELD
Vehicles withA/Cº button-
Moving the air flow selector lever to the windshield position turns on the defrost-
er-linked air conditioning. At this time, the
A/Cº button indicator comes on regard-less of whether or not the A/Cº button ispressed in. This is to clear up the front
view more quickly. When the A/Cº button is not pressed in,
turning the air flow selector lever to anoth-
er position turns off the air conditioning. On humid days, do not blow cold air on
the windshieldÐthe difference be-tween the outside and inside tempera-
tures could make the fogging worse.

111
A large amount of unburned gasesflowing into the three-way
catalytic converter may cause it tooverheat and create a fire hazard. To prevent this and other damage,observe the following precautions:
Use only unleaded gasoline.
Do not drive with an extremelylow fuel level; running out of fuelcould cause the engine to mis-
fire, creating an excessive load
on the three-way catalytic con-verter.
Do not allow the engine to run at
idle speed for more than 20 min-utes.
Avoid racing the engine.
Do not push-start or pull-startyour vehicle.
Do not turn off the ignition while
the vehicle is moving.
NOTICEKeep your engine in good run-ning order. Malfunctions in the
engine electrical system, elec-tronic ignition system/distributorignition system or fuel systems
could cause an extremely high
three-way catalytic convertertemperature.
If the engine becomes difficult to
start or stalls frequently, take your
vehicle in for a check-up as soon
as possible. Remember, your
Toyota dealer knows your vehicleand its three-way catalytic
converter system best.
To ensure that the three-way cat-alytic converter and the entire
emission control system operate
properly, your vehicle must re-ceive the periodic inspections re-
quired by the Toyota Maintenance
Schedule. For scheduled mainte- nance information, refer to the
separate Owner's Manual Sup- plement/Maintenance Scheduleº.
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 es-
cape, 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 areaand adjust the heating or cooling
system to force outside air into the vehicle.
Engine exhaust cautions

11 2
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
other obstructions.
If you smell exhaust fumes in the
vehicle, drive with the windows
open. Have the cause immediately
located and corrected.
Toyota does not recommend occu-
pying the rear cargo area when it is
fitted with a slide-in camper,camper shell or other type cover
while the engine is running. This
caution applies to both driving and
stopped or parked situations with
the engine running. Particular care
should be taken to prevent ex-
haust gases from entering camper
bodies, trailer or other enclosures
on or around your vehicle. If ex-
haust fumes are detected, open all
windows and thoroughly ventilate the area. FUNCTIONS OF ENGINE OIL
Engine oil has the primary functions of lu-
bricating and cooling the inside of the en-
gine,
and plays a major role in maintaining
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 piston
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 com-
bustion 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
depends 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.
When judging the amount of oil con-
sumption, note that the oil may be- come diluted and make it difficult to
judge the true level accurately.
As an example, if a vehicle is used for re-
peated 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 the fuel or moisture, making it
appear that the oil level has not changed.
Facts about engine oil consumption

173
The ILSAC (International Lubricant Stan-
dardization and Approval Committee) Certification Mark is displayed on the front
of the container. Look at the see-through coolant res-
ervoir when the engine is cold. The
coolant level is satisfactory if it is be-
tween the FULLº and LOWº lines on
the reservoir. If the level is low, add
ethylene-glycol type coolant.
The coolant level in the reservoir will vary
with engine temperature. However, if the
level is on or below the LOWº line, add
coolant. Bring the level up to the FULLº line. Use only ethylene-glycol type coolant. See information in the next column.
If the coolant level drops within a short
time after replenishing, there may be a
leak in the system. Visually check the ra-
diator, hoses, radiator cap and drain cock
and water pump.
If you can find no leak, have your Toyota
dealer
test the cap pressure and check for
leaks in the cooling system.
To prevent burning yourself, do not remove the radiator cap when the
engine is hot.
CAUTION! Coolant type selection
Your coolant must contain ethylene-gly- col antifreeze. In addition to preventingfreezing and subsequent damage to the
engine, this will also prevent corrosion. Further supplemental inhibitors or addi-
tives are neither needed nor recom- mended.
Read
the antifreeze container for informa-
tion on freeze protection. Follow the
manufacturer 's directions for how much
to mix with water. The total capacity of the
cooling system is given in Part 8. We rec-
ommend 50% solution be used for your
Toyota, or a sufficient quantity to provideprotection to about -35 C (-31 C).
Do not use alcohol type antifreeze
or plain water alone.
NOTICE
Checking the engine coolant level

178
CAUTION
Do not drive with the snow tires in- correctly inflated.
Never drive over 120 km/h (75 mph)
with any type of snow tires.!
TIRE CHAIN SELECTION Use the tire chains of correct size.
Regulations regarding the use of tire
chains vary according to location or
type of r oad, so always check them be-
fore installing chains.
CHAIN INSTALLATION
Install the chains on the rear tires as
tightly as possible. Do not use tire
chains on the front tires. Retighten
chains after driving 0.5 '1.0 km
(1/4 '1/2 mile).
When installing chains on your tires, care- fully follow the instructions of the chain
manufacturer.
If wheel covers are used, they will be
scratched by the chain band, so removethe covers before putting on the chains.
Do not exceed 50 km/h (30 mph) or
the chain manufacturer's recom-
mended speed limit, whichever is
lower.
Drive carefully avoiding bumps,
holes, and sharp turns, which may cause the vehicle to bounce.
Avoid sharp turns or locked-wheel
braking, as use of chains may ad- versely affect vehicle handling.
CAUTION! WHEN TO REPLACE YOUR WHEELS
If you have wheel damage such as
bending, cracks or heavy corrosion,
the wheel should be replaced.
If you fail to replace damaged wheels, the
tire may slip off the wheel or they may cause loss of handling control. WHEEL SELECTION
When replacing wheels, care should
be taken to ensure that the wheels are
replaced by ones with the same load
capacity, diameter, rim width, and off- set.
Correct
replacement wheels are available
at your Toyota dealer.
A wheel of a different size or type may ad-
versely affect handling, wheel and bear-
ing life, brake cooling, speedometer/
odometer calibration, stopping ability,
headlight aim, bumper height, vehicle
ground clearance, and tire or snow chain clearance to the body and chassis.
Replacement with used wheels is not rec-
ommended as they may have been sub- jected to rough treatment or high mileageand could fail without warning. Also, bent
wheels which have been straightened
may have structural damage and there-
fore should not be used. Never use an in-
ner tube in a leaking wheel which is de-
signed for a tubeless tire.
Replacing wheels

196ENGINE LUBRICATION Oil capacity (drain and refill), L (qt., Imp. qt.):
Two-wheel drive models3RZ-FE engine With filter 5.5 (5.8, 4.8) Without filter 4.8 (5.1, 4.2)
5VZ-FE engine With filter 5.2 (5.5, 4.6) Without filter 4.9 (5.2, 4.3)
Four-wheel drive models With filter 4.7 (5.0, 4.1)Without filter 4.4 (4.7, 3.9)
Oil grade:
API SH, Energy- Conserving IIº multi-
grade engine oil or ILSAC multigrade
engine oil is recommended.
Recommended oil viscosity (SAE):
COOLING SYSTEM
Total capacity, L (qt., Imp. qt.): Two-wheel drive modelsWith manual transmission
3RZ-FE engine8.7 (9.2, 7.7)
5VZ-FE engine 10.0 (10.6, 8.8)
With automatic transmission 3RZ-FE engine
9.0 (9.5, 7.9)
5VZ-FE engine
9.9 (10.5, 8.7)
Four-wheel drive models
With manual transmission10.0 (10.6, 8.8)
With automatic transmission 9.9 (10.5, 8.7)
Coolant type: With ethylene-glycol antifreeze (Do not use alcohol type.)
BATTERY ÐMaintenance type battery
Specific gravity reading at 20 C (68 F):
1.260 Fully charged
1.160 Half charged
1.060 Discharged ÐNon-maintenance battery Open voltage* at 20
C (68 F):
12.7 V Fully charged
12.3 V Half charged
11.9 V Discharged
* Voltage that is checked 20 minutes after the key is removed with all the
lights turned off
Charging rates: Non-maintenance battery 5 A max. Maintenance type batteryQuick charge 15 A max.
Slow charge 5 A max.
CLUTCH
Pedal freeplay, mm (in.): 5' 15 (0.2 '0.6)
Fluid type:
SAE J1703 or FMVSS No. 116 DOT 3
MANUAL TRANSAXLE
Oil capacity, L (qt., Imp. qt.): 3RZ-FE engine
2.6 (2.7, 2.3)
5VZ-FE engine
Two-wheel drive models2.6 (2.7, 2.3)
Four-wheel drive models 2.2 (2.3, 1.9)

200
Fuses (type A)
1. HEAD (LH) 10 A: Left-hand headlight
2. HEAD (RH) 10 A: Right-hand head-
light
3. A/C 10 A: Air conditioning cooling sys-
tem
4 EFI 15 A: Multiport fuel injection sys-
tem/sequential multiport fuel injection
system, electronically controlled auto-
matic transmission system
5. HAZ-HORN 15 A: Emergency flash-
ers, horns
6. DOME 15 A: Interior light, personal
lights, step lights, ignition switch light,
radio, cassette tape player, power an- tenna, clock7. HEAD (LH-HI) 10 A: Left-hand head-
light (high beam)
8. HEAD (RH-HI) 10 A: Right-hand
headlight (high beam)
9. HEAD (LH-LO) 10 A: Left-hand
headlight (low beam)
10. HEAD (RH-LO) 10 A: Right-hand
headlight (low beam)
11. ENGINE 10 A: Charging system,
cruise control system
12. IGN. 7.5 A: Charging system,
discharge warning light, multiport fuel
injection system/sequential multiport fuel injection system13. TAIL 15 A: Tail lights, parking lights,
license plate lights, instrument panel lights, glovebox light
14. WIPER 20 A: Windshield wiper and
washer
15. GAUGES 10 A: Automatic transmis-
sion overdrive control system, gauges
and meters, service reminder indica-
tors and warning buzzers (except dis-
charge cruise warning light), A.D.D. control system, cruise control system,
back-up lights, power door lock sys- tem
16. STOP 15 A: Stop lights, High-
mounted stoplight, cruise control sys-
tem, electronically controlled automat-
ic transmission system
Fuses