check oil TOYOTA PRIUS 2001 Service Repair Manual

ENGINE ± 1NZ-FXE ENGINE
171EG13
Spring
Plunger
Cam
Cam Spring Check Ball
171EG32171EG31
Service Hole for
Chain Tensioner
Oil Pump
Front ViewBack View51
5. Chain Tensioner
The chain tensioner uses a spring and oil pres-
sure to maintain proper chain tension at all
times.
The chain tensioner suppresses noise generated
by the chain.
A ratchet type half-back mechanism is used.
6. Timing Chain Cover
A single-piece, aluminum die-cast timing chain cover that entirely seals the front portion of the cylinder
block and the cylinder head has been adopted.
A service hole for the chain tensioner has been provided in the timing chain cover to improve serviceabili-
ty.

FI1066
IN0CO±17
Z11554
Seal Lock Adhesive
IN±4
± INTRODUCTIONREPAIR INSTRUCTIONS
4 Author: Date:
2001 PRIUS (RM778U)
REPAIR INSTRUCTIONS
GENERAL INFORMATION
BASIC REPAIR HINT
(a) Use fender, seat and floor covers to keep the vehicle
clean and prevent damage.
(b) During disassembly, keep parts in the appropriate order
to facilitate reassembly.
(c) Installation and removal of battery terminal:
(1) Before performing electrical work, disconnect the
negative (±) terminal cable from the battery.
(2) If it is necessary to disconnect the battery for in-
spection or repair, first disconnect the negative (±)
terminal cable.
(3) When disconnecting the terminal cable, to prevent
damage to battery terminal, loosen the cable nut
and raise the cable straight up without twisting or
prying it.
(4) Clean the battery terminals and cable ends with a
clean shop rag. Do not scrape them with a file or oth-
er abrasive objects.
(5) Install the cable ends to the battery terminals after
loosening the nut, and tighten the nut after installa-
tion. Do not use a hammer to tap the cable ends
onto the terminals.
(6) Be sure the cover for the positive (+) terminal is
properly in place.
(d) Check hose and wiring connectors to make sure that they
are connected securely and correctly.
(e) Non±reusable parts
(1) Always replace cotter pins, gaskets, O±rings, oil
seals, etc. with new ones.
(2) Non±reusable parts are indicated in the component
illustrations by the ºº symbol.
(f) Precoated parts
Precoated parts are bolts, nuts, etc. that are coated with
a seal lock adhesive at the factory.
(1) If a precoated part is retightened, loosened or
caused to move in any way, it must be recoated with
the specified adhesive.
(2) When reusing precoated parts, clean off the old
adhesive and dry with compressed air. Then apply
the specified seal lock adhesive to the bolt, nut or
threads.

IN±16
± INTRODUCTIONFOR ALL OF VEHICLES
16 Author: Date:
2001 PRIUS (RM778U)
6. ACTIONS TO BE TAKEN FOR VEHICLE DAMAGED BY
IMPACT
(a) Items to be prepared (For operation at the site of acci-
dent)

Protective clothing (Insulated gloves, rubber
gloves, goggles, and safety shoes)

Saturated boric acid solution 20 L (Procure 800 g of
boric acid powder, put it into a container, and dis-
solve it in water.)

Red litmus paper

ABC fire extinguisher (Applicable to both oil flames
and electrical flames)

Waste rags or old towels (For wiping off the electro-
lyte)

Vinyl tape (For insulating cable)

Electrical tester
(b) Actions to be taken at the place of accident
(1) Wear insulated or rubber gloves, goggles and safe-
ty shoes.
(2) Do not touch a bare cable that could be a high±volt-
age cable. If you need to touch it, or if you have a
danger of making an accidental contact, wear insu-
lated gloves, measure the voltage between the
cable and body ground using an electrical tester,
and insulate the cable using vinyl tape.
(3) If the vehicle catches fire, use a ABC fire extinguish-
er to extinguish the fire. Trying to extinguish the fire
using only a small amount of water can be more
dangerous than effective: either use a greater
amount of water from a fire hydrant or wait for the
fire fighters.
(4) If the vehicle is partially submerged in water, do not
touch the service plug or any of the high±voltage
components and cables because of the danger of
electrocution. If you need to touch them, do so only
after pulling the vehicle completely out of water.
(5) Check the HV battery and nearby area for any leak-
age of the electrolyte. Do not touch any leaking liq-
uid because it could be the highly alkaline electro-
lyte. If you need to wipe it off (using rags etc.), do so
only after completing the following procedure: wear
the rubber gloves and goggles, neutralize the elec-
trolyte with saturated boric acid solution, and finally
apply a red litmus paper to make sure that it does
not turn blue.

IN±28
± INTRODUCTIONFOR ALL OF VEHICLES
28 Author: Date:
2001 PRIUS (RM778U)
8. FOR VEHICLES EQUIPPED WITH A CATALYTIC CONVERTER
CAUTION:
If large amount of unburned gasoline flows into the converter, it may overheat and create a fire haz-
ard. To prevent this, observe the following precautions and explain them to your customer.
(a) Use only unleaded gasoline.
(b) Avoid prolonged idling.
Avoid running the engine at idle speed for more than 20 minutes.
(c) Avoid spark jump test.
(1) Perform spark jump test only when absolutely necessary. Perform this test as rapidly as possible.
(2) While testing, never race the engine.
(d) Avoid prolonged engine compression measurement.
Engine compression tests must be done as rapidly as possible.
(e) Do not run engine when fuel tank is nearly empty.
This may cause the engine to misfire and create an extra load on the converter.
(f) Avoid coasting with ignition turned off.
(g) Do not dispose of used catalyst along with parts contaminated with gasoline or oil.
9. IF VEHICLE IS EQUIPPED WITH MOBILE COMMUNICATION SYSTEM
For vehicles with mobile communication systems such as two±way radios and cellular telephones, observe
the following precautions.
(1) Install the antenna as far as possible away from the ECU and sensors of the vehicle's electronic
system.
(2) Install the antenna feeder at least 20 cm (7.87 in.) away from the ECU and sensors of the ve-
hicle's electronic systems. For details about ECU and sensors locations, refer to the section on
the applicable component.
(3) Avoid winding the antenna feeder together with other wiring as much as possible, and also avoid
running the antenna feeder parallel with other wire harnesses.
(4) Check that the antenna and feeder are correctly adjusted.
(5) Do not install powerful mobile communications system.
10. FOR USING OBD II SCAN TOOL OR TOYOTA HAND±HELD TESTER
CAUTION:
Observe the following items for safety reasons:

Before using the OBD II scan tool or TOYOTA hand±held tester, the OBD II scan tool's instruc-
tion book or TOYOTA hand±held tester's operator manual should be read thoroughly.

Be sure to route all cables securely when driving with the OBD II scan tool or TOYOTA hand±
held tester connected to the vehicle. (i.e. Keep cables away from feet, pedals, steering wheel
and shift lever.)

Two persons are required when test driving with the OBD II scan tool or TOYOTA hand±held
tester, one person to drive the vehicle and the other person to operate the OBD II scan tool or
TOYOTA hand±held tester.

MA02E±02
± MAINTENANCEOUTSIDE VEHICLE
MA±1
54 Author: Date:
2001 PRIUS (RM778U)
OUTSIDE VEHICLE
GENERAL MAINTENANCE
These are maintenance and inspection items which are considered to be the owner's responsibility.
They can be done by the owner or they can have them done at a service shop.
These items include those which should be checked on a daily basis, those which, in most cases, do not
require (special) tools and those which are considered to be reasonable for the owner to do.
Items and procedures for general maintenance are as follows.
1. GENERAL NOTES

Maintenance items may vary from country to country. Check the owner's manual supplement in which
the maintenance schedule is shown.

Every service item in the periodic maintenance schedule must be performed.

Periodic maintenance service must be performed according to whichever interval in the periodic main-
tenance schedule occurs first, the odometer reading (miles) or the time interval (months).

Maintenance service after the last period should be performed at the same interval as before unless
otherwise noted.

Failure to do even one item an cause the engine to run poorly and increase exhaust emissions.
2. TIRES
(a) Check the pressure with a gauge. If necessary, adjust.
(b) Check for cuts, damage or excessive wear.
3. WHEEL NUTS
When checking the tires, check the nuts for looseness or for missing nuts. If necessary, tighten them.
4. TIRE ROTATION
Check the owner's manual supplement in which the maintenance schedule is shown.
5. WINDSHIELD WIPER BLADES
Check for wear or cracks whenever they do not wipe clean. If necessary, replace.
6. FLUID LEAKS
Check underneath for leaking fuel, oil, water or other fluid.
7. DOORS AND ENGINE HOOD
(a) Check that all doors including the trunk lid operate smoothly, and that all latches lock securely.
(b) Check that the engine hood secondary latch secures the hood from opening when the primary latch
is released.

MA02G±02
MA±4
± MAINTENANCEUNDER HOOD
57 Author: Date:
2001 PRIUS (RM778U)
UNDER HOOD
GENERAL MAINTENANCE
1. GENERAL NOTES

Maintenance items may vary from country to country. Check the owner's manual supplement in which
the maintenance schedule is shown.

Every serice item in the periodic maintenance schedule must be performed.

Periodic maintenance service must be performed according to whichever interval in the periodic main-
tenance schedule occurs first, the odometer reading (miles) or the time interval (months).

Maintenance service after the last period should be performed at the same interval as before unless
otherwise noted.
2. WINDSHIELD WASHER FLUID
Check that there is sufficient fluid in the tank.
3. ENGINE COOLANT LEVEL
Check that the coolant level is between the ºFULLº and ºLOWº lines on the see±through reservoir.
4. RADIATOR AND HOSES
(a) Check that the front of the radiator is clean and not blocked with leaves, dirt or bugs.
(b) Check the hoses for cracks, kinks, rot or loose connections.
5. BRAKE FLUID LEVELS
Check that the brake fluid levels are near the upper level line on the see±through reservoirs.
6. CHECK TRANSAXLE OIL (FLUID)

Visually check the transaxle for oil (fluid) leakage.

If leakage is found, check for the cause and repair.
HINT:
Wait until the engine and motor cools down (approx. 30 min.) before checking the fluid level after extended
driving at high speeds, in hot weather, in heavy traffic or pulling a trailer.

MA00R±17
B08810
± MAINTENANCEENGINE
MA±5
58 Author: Date:
2001 PRIUS (RM778U)
ENGINE
INSPECTION
HINT:
Inspect these items when the engine is cold.
1. INSPECT DRIVE BELT
(See page CO±4)
2. REPLACE SPARK PLUGS
(See page IG±1)
3. INSPECT AIR FILTER
(a) Visually check that the air filter is not excessively dirty or
oily.
HINT:
Oiliness may indicate a stuck PCV valve.
If necessary, replace the air cleaner element.
(b) Clean the air filter with compressed air.
First blow from the inside thoroughly, then blow off the
outside of the element.
4. REPLACE AIR FILTER
Replace the air filter with a new one.
5. REPLACE ENGINE OIL AND OIL FILTER
(See page LU±3)
6. REPLACE ENGINE COOLANT
(See page CO±2)
7. INSPECT CHARCOAL CANISTER
(Se page EC±7)
8. REPLACE GASKET IN FUEL TANK CAP
(See page SF±19)
9. INSPECT FUEL LINES AND CONNECTIONS
(See page SF±19)
10. INSPECT EXHAUST PIPES AND MOUNTINGS
(See page EC±13)
11. ADJUST VALVE CLEARANCE
(See page EM±5)

MA048±01
S01303
Dust Cover
± MAINTENANCECHASSIS
MA±7
60 Author: Date:
2001 PRIUS (RM778U)
CHASSIS
INSPECTION
1. INSPECT STEERING LINKAGE
(a) Check the steering wheel freeplay. (See page SR±3)
(b) Check the steering linkage for looseness or damage.
Check that:

Tie rod ends do not have excessive play.

Dust seals and boots are not damaged.

Boot clamps are not loose.
2. INSPECT SRS AIRBAG (See page RS±2)
3. INSPECT STEERING GEAR HOUSING OIL
Check the steering gear housing for oil leakage.
4. INSPECT DRIVE SHAFT BOOTS
Check the drive shaft boots for clamp looseness, leakage or
damage.
5. INSPECT BALL JOINTS AND DUST COVERS
(a) Inspect the ball joints for excessive looseness.

Jack up the front of the vehicle and place wooden
blocks with a height of 180 ± 200 mm (7.09 ± 7.87
in.) under the front tires.

Lower the jack until there is about half a load on the
front coil spring. Place stands under the vehicle for
safety.

Check that the front wheels are pointing straight
ahead, and block them with chocks.

Using a lever, pry up the end of the lower arm, and
check the amount of play.
Maximum ball joint vertical play: 0 mm (0 in.)
If there is play, replace the ball joint.
(b) Check the dust cover for damage.
6. CHECK TRANSAXLE OIL (FLUID)
Visually check the transaxle for oil (fluid) leakage.
If leakage is found, check for the cause and repair.
7. REPLACE TRANSAXLE OIL (FLUID)
Replace the transaxle oil (See page HT±26).

PP3AX±02
PP±8
± PREPARATIONSFI
69 Author: Date:
2001 PRIUS (RM778U)
SFI
SST (Special Service Tools)
09268±21010Fuel Hose Puller
09268±41047Injection Measuring Tool Set
(95336±08070)Hose
09268±45014EFI Fuel Pressure Gauge
(09268±41200)Gauge
(09268±41220)Hose
(09268±41250)T Joint
09816±30010Oil Pressure Switch Socket
09842±30080EFI Inspection Wire ºHº
09843±18020Diagnosis Check Wire

EM9891
± DIAGNOSTICSENGINE
DI±9
2001 PRIUS (RM778U)
3 Check air filter.
PREPARATION:
Remove the air filter.
CHECK:
Visual check that the air filter is not dirty or excessive oily.
HINT:
If necessary, clean the air filter with compressed air. First blow
from inside thoroughly, then blow from outside of the air filter.
NG Repair or replace.
OK
4 Check engine idle speed.
PREPARATION:
(a) Warm up engine to normal operating temperature.
(b) Switch off all accessories.
(c) Switch off A/C.
(d) Shift transmission into P position.
(e) Connect the TOYOTA hand±held tester or OBDII scan tool to DLC3 on the vehicle.
(f) Transit to inspection mode.
CHECK:
Use CURRENT DATA to check the idle speed.
OK:
Idle speed: 950 ± 1,050 rpm
NG Proceed to problem symptoms table on page
DI±22.
OK