1997 TOYOTA T100 low oil pressure

Indicator symbols on the instrument panel
6
4WD
Anti-lock brake system warning light*
Brake system warning light* Seat belt reminder light*
Discharge warning light*
Low oil pressure warning light*
Malfunction indicator light*
Low fuel level warning light*
SRS airbag warning light* Automatic transmission fluid
temperature warning light*
Turn signal indicator lights
Headlight high beam indicator light
Over-drive indicator light
Unengaged Parkº warning light* Low windshield washer fluid level warning light*
4WDº indicator light
Automatic transmission indicator lights
Cruise control indicator light
The indicators marked with * are service reminder indicators.
For details, see Service reminder indicators and warning
buzzersº in Chapter 1-5.

Part 1Fuel gauge (without tachometer)
55
OPERATION OF INSTRUMENTS ANDCONTROLSÐ
Chapter 1-5 Gauges, Meters and Service reminderindicators
Fuel gauge
Engine coolant temperature gauge
Oil pressure gauge
Voltmeter
Tachometer
Odometer and trip meter
Service
reminder indicators and
warning buzzers
The gauge works when the ignition
switch is on and indicates the approxi-
mate quantity of fuel remaining in the tank.
It is a good idea to keep the tank over 1/4 full.
The needle moves when braking, acceler-
ating or making turns. This is caused by the fuel moving in the tank.
If the level approaches Eº or the low fuel
level warning light comes on, fill the fuel
tank as soon as possible.
If the fuel tank is completely empty, the malfunction indicator lamp comes on. Fill
the fuel tank immediately. The indicator lamp goes off after driving
several times. If the indicator lamp does
not go off, contact your Toyota dealer assoon as possible.

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

60(a) Brake System Warning Light This light has the following functions: Parking brake reminder
If this light is on, make sure the parking
brake is
fully released. The light should go
off.
Low brake fluid level warning
If this light comes on and stays on while
you are driving, slow down and pull off the
road. Then stop the vehicle carefully.There may be a problem somewhere in
the brake system. Check the fluid level of
the see-through reservoir.
To make sure the parking brake has not
caused the warning light to come on,
check to see that the parking brake is fully
released.
If the brake fluid level is low...
At a safe place, test your brakes by start-
ing and stopping. If you judge that the brakes still work
adequately, drive cautiously to yournearest dealer or shop for repairs.
If the brakes are not working, have the
vehicle towed in for repairs. (For tow-
ing information, see Part 4.)
It is dangerous to continue driving
normally when the brake fluid level
is low. CAUTION
!
If the brake fluid level is correct...
Have the warning system checked by
your Toyota dealer.
(b) Seat Belt Reminder Light and Buzzer
Once the ignition key is turned to ONº or
STARTº, the reminder light and buzzer
come on if the driver's seat belt is not fas- tened. Unless the driver fastens the belt,
the light stays on and the buzzer stops af-
ter about 4 to 8 seconds.
(c) Discharge Warning Light
This light warns that the battery is being discharged.
If it comes on while you are driving, there
is a problem somewhere in the charging system. The engine ignition will continue to oper-
ate, however, until the battery is dis-
charged. Turn off the air conditioning,
blower, ra
dio, ect., and drive directly to the
nearest Toyota dealer or repair shop.
NOTICE
Do not continue driving if the engine drive belt is broken or loose.
(d) Low Oil Pressure Warning Light
This light warns that the engine oil pres-
sure is too low.
If it flickers or stays on while you are
driving, pull off the road to a safe place
and stop the engine immediately. Call a
Toyota dealer or qualified repair shop forassistance.
The light may occasionally flicker when
the engine is idling or it may come on brief-
ly after a hard stop. There is no cause for concern if it then goes out when the en-
gine is accelerated slightly.
The light may come on when the oil level
is extremely low. It is not designed to indi- cate low oil level, and the oil level must be checked using the level dipstick.

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

137
If your engine coolant temperature
gauge indicates overheating, if you
experience a loss of power, or if you
hear a
loud knocking or pinging noise,
the engine has probably overheated.
You should follow this procedure 0
1. Pull safely off the road, stop the ve- hicle and turn on your emergency
flashers. Put the transmission in Pº
(automatic) or neutral (manual) 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.
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. CAUTION
! 3. Visually check to see if the engine
drive belt (fan belt) is broken or loose.
Look for obvious coolant leaks from
the radiator, hoses, and under the ve-
hicle. However, note that water drain-ing from the air conditioning is normal if it has been used.
When the engine is running, keep
hands and clothing away from the
moving fan and engine drive belts. CAUTION
!
4. If the engine drive belt is broken of the coolant is leaking, stop the engine im-
mediately. Call a Toyota dealer for as- sistance.
5. If The engine drive belt is O.K. and there are no obvious leaks, you may
help the engine cool down more quick-
ly by running it at about 1500 rpm for
a few minutes with the accelerator
pedal lightly depressed.
6. Check the coolant reservoir. If it is dry, add coolant to the reservoir while the
engine is running. Fill it about half full.
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 underpressure. CAUTION
!
7. After the engine coolant temperature has cooled to normal, again check the
coolant level in the reservoir. If
necessary, bring it up to half full again.
Serious coolant loss indicates a leak in
the system. You should have it
checked as soon as possible at your
Toyota dealer.
If your vehicle overheats

Part 7Checking the engine oil level
171
DO-IT-YOURSELF MAINTENANCEÐ
Chapter 7-2 Engine and Chassis
Checking the engine oil level
Checking the engine coolant level
Checking brake fluid
Checking power steering fluid
Checking tire pressure
Checking and replacing tires
Rotating tires
Installing snow tires and chains
Replacing wheels
Aluminum wheel precautions
With the engine at operating tempera- ture and turned off, check the oil level
on the dipstick.
1. To get a true reading, the vehicle
should be on a level spot. After turning
off the engine, wait a few minutes for
the oil to drain back into the bottom of the engine.
2. Pull out the dipstick, and wipe it clean with a rag.
3. Reinsert the dipstick 'push it in as far
as it will go, or the reading will not be correct.
4. Pull the dipstick out and look at the oil level on the end.
CAUTION
Be careful not to touch the hot ex-
haust manifold.!
If the oil level is below or only slightly
above the low level line, add engine oil
of the same type as already in the en- gine. Remove the oil filter cap and add engine oil in small quantities at a time, checkingthe dipstick.
The approximate quantity of oil needed to
fill between the low level line and the full
level on the dipstick is indicated below for reference. When the level reaches within the correct range, install the filler cap hand-tight.
Oil quantity, L (qt., Imp. qt.):
3RZ-FE engine 1.5 (1.6, 1.3) 5VZ-FE engineTwo-wheel drive models 1.5 (1.6, 1.3)
Four-wheel drive models 1.4 (1.5, 1.2)

197
Oil type:
Multipurpose gear oil API GL-4 or GL-5
Recommended oil viscosity: SAE 75W-90
AUTOMATIC TRANSMISSION Fluid capacity (drain and refill), L (qt., Imp. qt.):
Two-wheel drive models Up to 1.6 (1.7, 1.4)
Four-wheel drive models Up to 2.0 (2.1, 1.8)
Fluid type: Automatic transmission fluid D-II or DEXRON [
III (DEXRON [
II)
TRANSFER
Oil capacity, L (qt., lmp. qt.):
1.1 (1.2, 1.0)
Oil type:
Multipurpose gear oil API GL-4 or GL-5
Recommended oil viscosity: SAE 75W-90
DIFFERENTIAL
Oil capacity, L (qt., lmp. qt.): Two-wheel drive models
2.75 (2.9, 2.4)
Four-wheel drive models Front 1.9 (2.0, 1.7)
Rear 2.95 (3.1, 2.6) Oil type:
Hypoid gear oil API GL-5
Recommended oil viscosity: Front
SAE 75W-90
Rear Above -18 C (0 F)
SAE 90
Below -18 C (0 F)
SAE 80W or 80W-90
CHASSIS LUBRICATION Wheel bearings:
Lithium base wheel bearing grease, NLGI No. 2
Front drive shaft thrust bushings: Synthetic oil and lithium soap basechassis grease, NLGI No. 1
Propeller shafts: Spiders and slide yokes
Lithium base chassis grease,NLGI No. 2
Double cardan joint Molybdenum-disulfide lithium basechassis grease, NLGI No. 2
BRAKES Minimum pedal clearance when de- pressed with the pressure of 490 N (50
kgf, 110 lbf) with the engine running, mm (in.): Two-wheel drive models
1-ton models 78 (3.1)
1/2-ton models 73 (2.9)
Four-wheel drive models
1-ton models 70 (2.8)
1/2-ton models 73 (2.9)
Pedal freeplay, mm (in.):
3' 6 (0.12 '0.24)
Pad wear limit, mm (in.):
1.0 (0.04)
Lining wear limit, mm (in.):
1.0 (0.04)
Parking brake adjustment when pulled with the force of 196 N (20 kgf, 44 lbf): 11'17 clicks
Fluid type:
SAE J1703 or FMVSS No. 116 DOT 3
STEERING Wheel freeplay:
Less than 30 mm (1.2 in.)
Power steering fluid type:
Automatic transmission fluid DEXRON [
II or III