maintenance TOYOTA CAMRY V20 1986 Service Information

AT5032
(A540H)
The A540H automatic transaxle design is based on the A540E automatic transaxle and equipped with a
center differential and transfer.
This transaxle has the same hydraulic multiplate clutch in the center differential limiting control mecha-
nism as the A241H automatic transaxle on the Corolla All-Trac/4WD Station Wagon. The fluid pressure
acting on the hydraulic multiplate clutch of the A540H is controlled by the ECT ECU (Electronic Control
Unit) according to the vehicle driving conditions. As a result, torque is distributed to the front and rear
wheels appropriately at all times to maximize the overall performance of the 4WD vehicle.
NOTICE: Special handling methods are necessary for full-time 4WD vehicles during inspection and
maintenance. Instructions concerning these handling methods are given on Camry Repair Manual
(Pub. No. RM199U) on page IN-8.
Hydraulic Multiplate ClutchTransfer Front DifferentialCenter
Differential 4-Speed Planetary Gear
Unit and Hydraulic
Control SystemNo. 1 and No. 2 Center Differential
Control Solenoid ValveCenter Differential ControlECT
ECU No. 1 and No. 2 Shift Control
Solenoid Valves and Lock-up
Control solenoid ValveEngine ECU
Throttle Position
Sensor
Stop Light Switch
Vehicle Speed
Sensors
Mode Select Switch
Neutral Start Switch
O/D Main Switch
Center Deff. Control
Switch Shift Control Sectional View
Sensors
- AUTOMATIC TRANSAXLEDescriptionAT-3

PRECAUTIONS
1. Before working the fuel system, disconnect the cable
from negative (±) terminal of the battery.
HINT: Any diagnostic code retained by the computer will be erased
when the battery terminal is removed. Therefore, if necessary, read
the diagnosis before removing the battery terminal.
2. Do not smoke or work open flame when working the fuel system.
3. Keep gasoline off rubber or leather parts.
INSPECTION PRECAUTIONS
MAINTENANCE PRECAUTIONS
1. CHECK CORRECT ENGINE TUNE±UP
(See page EM±8)
2. PRECAUTIONS WHEN CONNECTING GAUGE
(a) Use the battery as the power source for the timing light, tachome-
ter, etc.
(b) (3S±FE)
Connect the test probe of a tachometer to the service
connector of the distributor.
(c) (2VZ±FE)
Connect the test probe of a tachometer to the terminal
IG ± of the check connector.
3. IN EVENT OF ENGINE MISFIRE FOLLOWING
PRECAUTIONS SHOULD BE TAKEN
(a) Check proper connection of battery terminals, etc.
(b) Handle high±tension cords carefully.
(c) After repair work, check that the ignition coil terminals and
all other ignition system lines are reconnected securely.
(d) When cleaning the engine compartment, be especially
careful to protect the electrical system from water.
4. PRECAUTIONS WHEN HANDLING OXYGEN
SENSOR(S)
(a) Do not allow the oxygen sensor to drop or hit against an ob-
ject.
(b) Do not allow the sensor to come into contact with water.
± EFI SYSTEMPrecautionsFI±5

PRECAUTIONS
1. Before working the fuel system, disconnect the cable
from negative (±) terminal of the battery.
HINT: Any diagnostic code retained by the computer will be erased
when the battery terminal is removed. Therefore, if necessary, read
the diagnosis before removing the battery terminal.
2. Do not smoke or work open flame when working the fuel system.
3. Keep gasoline off rubber or leather parts.
INSPECTION PRECAUTIONS
MAINTENANCE PRECAUTIONS
1. CHECK CORRECT ENGINE TUNE±UP
(See page EM±8)
2. PRECAUTIONS WHEN CONNECTING GAUGE
(a) Use the battery as the power source for the timing light, tachome-
ter, etc.
(b) (3S±FE)
Connect the test probe of a tachometer to the service
connector of the distributor.
(c) (2VZ±FE)
Connect the test probe of a tachometer to the terminal
IG ± of the check connector.
3. IN EVENT OF ENGINE MISFIRE FOLLOWING
PRECAUTIONS SHOULD BE TAKEN
(a) Check proper connection of battery terminals, etc.
(b) Handle high±tension cords carefully.
(c) After repair work, check that the ignition coil terminals and
all other ignition system lines are reconnected securely.
(d) When cleaning the engine compartment, be especially
careful to protect the electrical system from water.
4. PRECAUTIONS WHEN HANDLING OXYGEN
SENSOR(S)
(a) Do not allow the oxygen sensor to drop or hit against an ob-
ject.
(b) Do not allow the sensor to come into contact with water.
± EFI SYSTEMInspection PrecautionsFI±5

MAINTENANCE
± MAINTENANCEMA±1

Maintenance services indicated by a star (*) or asterisk (*) are required under the terms of the Emission Control Systems Warranty. See Owner's Guide or Warranty Booklet
for complete warranty information.
* For vehicles sold in California
* For vehicles sold outside California
(1) Applicable to vehicles operated under conditions of extensive idling and /or low speed driving for long distances such as police, taxi or door±to±door delivery use.
(2) Applicable when operating mainly on dusty roads. If not, follow SCHEDULE B.
(3) Includes inspection of fuel tank band and vapor vent system.
(4) Also applicable to lining drum for parking brake.
(5) Check for leakage.
(6) Check for oil leaks from steering gear housing.
(7) Applicable only when operating mainly on rough, muddy roads. The applicable parts are listed below. For other usage conditions, refer to SCHEDULE B.
w
Front and rear suspension member to body
w
0 Strut bar bracket to body bolts
w
Bolts for sheet installation
MAINTENANCE SCHEDULESCHEDULE A
CONDITIONS:
wTowing a trailer, using a camper or car top carrier.
wRepeated short trips less than 5 miles (8 km) and outside temperatures remain below freezing.
wExtensive idling and/or low speed driving for a long distance such as police, taxi or door±to±door delivery use.
wOperating on dusty, rough, muddy or salt spread roads.Maintenance operations: A = Check and adjust if necessary;
R = Replace, change or lubricate;
I = Inspect and correct or replace if necessary
Maintenance services beyond 60,000 miles (96,000 km) should continue to be performed at the same intervals shown for each
maintenance schedule.
Service interval
(Odometer reading or
months, whichever
comes first)
Maintenance items
Manual transaxle, automatic transaxle
and differential Brake pads and discs (Front and rear)
Bolts and nuts on chassis and bodyExhaust pipes and mountings
Steering gear housing oily Brake line pipes and hosesFuel lines and connections
Ball joints and dust coversEngine oil and oil filter
Spark plugs (platinum tipped)MA±4 (item 2)
MA±6 (item 6)
Brake linings and drumsFuel tank cap gasket
Drive shaft boots
MA±14 item 221 MA±10 (item 20) MA±5 (item 3,4)
Steering linkageMA±7 (item 12)
MA±8 (item 14) Valve clearance
MA±8 (item 16)
MA±9 (item 19) MA±7 (item 13) MA±7 (item 11
MA±7 (item 10)
MA±9 (item 18) Charcoal canister
MA±9 (item 17) MA±8 (item 151
See page
(item No.)
Engine coolant
MA±6 (item 9) MA±4 (item 1)
MA±4 (item 2)
MA±5 (item 5)
MA±8 (item 8) AAA±6 (item 7)
Air filter¿21*
Spark plugsTiming belt
Drive belts
IGNITION
CHASSIS BRAKESENGINESystem
EVAP FUEL
± MAINTENANCEMaintenance ScheduleMA±2

Maintenance services indicated by a star (*) or asterisk (*) are required under the terms of the Emission Control Systems Warranty.
See Owner's Guide or Warranty
Booklet for complete warranty information.

For vehicles sold in California
* For vehicles sold outside California
(1) Includes inspection of fuel tank band and vapor vent system.
(2) Also applicable to drum lining for parking brake.
(3) Check for leakage.
(4) Check for oil leaks from steering gear housing.
(5) The applicable part are listed below
wFront and rear suspension member to body
wStrut bar bracket to body bolts
wBolts for sheet installation
Maintenance service beyond 60,000 miles (96,000 km) should continue to be performed at the same intervals shown
for each maintenance schedule.
SCHEDULE BCONDITIONS: Conditions other than those listed for SCHEDULE A.
Service interval
(Odometer reading or
months, whichever
comes first)
Maintenance items
Manual transaxle, automatic
transaxle and differential (3) Brake pads and discs (Front and rearBolts and nuts on chassis and body 17)Exhaust pipes and mountings
Steering gear housing oil 1s) Brake linings and drums (4)
Brake line pipes and hoses Fuel lines and connections (31
Ball joints and dust covers Engine oil and oil filterSpark plugs (platinum tippedFuel tank cap gasket
MA±14 (item 22) MA±10 (item 20)
Charcoal canister
Steering linkage
Drive shaft boots
MA±7 (item 11)
MA±9 (item 19) MA±9 (item 18) MA±7 (item 13) MA±7 (item 10)
MA±8 (item 14) MA±7 (item 12)
MA±8 (item 16) MA±8 (item 15) See page
(item No.)
Engine coolant
MA±9 (item 17)
Valve clearance
MA±6 (item 8) MA±4 (item 2)
MA±6 (item 9) MA±6 (item 7)
MA±6 (item 7)
MA±5 (item 5) MA±5 (item 4)
Drive belts
Air filterSpark plugs
IGNITION
CHASSISBRAKES ENGINESystem
EVAPFUEL
± MAINTENANCEMaintenance ScheduleMA±3

GENERAL MAINTENANCE
These are the maintenance and inspection items
which are considered to be the owner's responsibility,
They can be performed by the owner or he
can have then done at a service shop. These items
include those which should be checked on a daily ba-
sis, those which, in most cases, do not require
(special) tools and those which are considered to be
reasonable for the owner to perform.
Items and procedures for general maintenance are as
follows:
OUTSIDE VEHICLE
1. TIRES
(a) Check the pressure with a gauge. Adjust
if necessary.
(b) Check for cuts, damage or excessive wear.
2. WHEEL NUTS
When checking the tires, check the nuts for looseness
or for missing nuts. If necessary,
tighten them.
3. TIRE ROTATION
It is recommended that tires be rotated every
7,500 miles (12,000 km).
4. WINDSHIELD WIPER BLADES
Check for wear or cracks whenever they do not wipe
clean. Replace if necessary.
5. FLUID LEAKS
(a) Check underneath for leaking fuel, oil, water or
other fluid.
(b) If you smell gasoline fumes or notice any leak,
have the cause found and corrected.
6. DOORS AND ENGINE HOOD
(a) Check that all doors including the trunk lid and
back door operate smoothly, and that all
latches lock securely.
(b) Check that the engine hood secondary latch se-
cures the hood from opening when the prima-
ry latch is released.
INSIDE VEHICLE
7. LIGHTS
(a) Check that the headlights, stop lights, taillights,
turn signal lights, and other
lights are all working.
(b) Check the headlight aiming.8. WARNING LIGHTS AND BUZZERS
Check that all warning lights and buzzers func-
tion properly.
9. HORN
Check that it is working.
10. WINDSHIELD GLASS
Check for scratches, pits or abrasions.
11. WINDSHIELD WIPER AND WASHER
(a) Check operation of the wipers and washer.
(b) Check that the wipers do not streak.
12. WINDSHIELD DEFROSTER
Check that air comes out from the defroster out-
let when operating the heater or air conditioner
at defroster mode.
13. REAR VIEW MIRROR
Check that it is mounted securely.
14. SUN VISORS
Check that they move freely and are mounted
securely.
15. STEERING WHEEL
Check that it has the specified freeplay. Be alert
for changes in steering condition, such as hard
steering, excessive freeplay or strange noise.
16. SEATS
(a) Check that all front seat controls such as
seat adjusters, seatback recliner, etc.
operate smoothly.
(b) Check that a11 latches lock securely in
any position.
(c) Check that the locks hold securely in any
latched position.
(d) Check that the head restraints move up
and down smoothly and that the locks
hold securely in any latched position.
(e) For folding±down rear seat backs, check
that the latches lock securely.
17. SEAT BELTS
(a) Check that the seat belt system such as
buckles, retractors and anchors operate
properly and smoothly.
(b) Check that the belt webbing is not cut,
frayed, worn or damaged.
± MAINTENANCEGeneral MaintenanceMA±16

18. ACCELERATOR PEDAL
Check the pedal for smooth operation and uneven
pedal effort or catching.
19. CLUTCH PEDAL (See page CL±3)
Check the pedal for smooth operation.
Check that the pedal has the proper freeplay.
20. BRAKE PEDAL (See page BR±6)
(a) Check the pedal for smooth operation.
(b) Check that the pedal has the proper reserve
distance and freeplay.
(c) Check the brake booster function.
21. BRAKES
At a safe place, check that the brakes do not pull
to one side when applied.
22. PARKING BRAKE (See page BR±8)
(a) Check that the lever has the proper travel.
(b) On a safe incline, check that the vehicle is
held securely with only the parking brake
applied.
23. AUTOMATIC TRANSMISSION PARK
MECHANISM
(a) Check the lock release button of the selector
lever for proper and smooth operation.
(b) On a safe incline, check that vehicle is held
securely with the selector lever in the ºPº
position and all brakes released.
UNDER HOOD
24. WINDSHIELD WASHER FLUID
Check that there is sufficient fluid in the tank.
25. ENGINE COOLANT LEVEL
Check that the coolant level is between the
ºFULLº and ºLOWº lines on the see±through reser-
voir.
26. 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.
27. BATTERY ELECTROLYTE LEVEL
Check that the electrolyte level of all battery cells
is between the upper and lower level lines on the
case. If level is low, add distilled water only.28. BRAKE AND CLUTCH FLUID LEVELS
(a) Check that the brake fluid level is near the
upper level line on the see±through reser-
voir.
(b) Check that the clutch fluid level is within
+ 5 mm (0.20 in.) of the reservoir hem.
29. ENGINE DRIVE BELTS
Check all drive belts for fraying, cracks, wear or
oiliness.
30. ENGINE OIL LEVEL
Check the level on the dipstick with the engine
turned off.
31. POWER STEERING FLUID LEVEL
Check the level.
The level should be in the ºHOTº or ºCOLDº
range depending on the fluid temperature.
32. AUTOMATIC TRANSMISSION FLUID
LEVEL
(a) Park the vehicle on a level surface.
(b) With the engine idling and the parking
brake applied, shift the selector into all
positions from ºPº to ºLº, and then shift
into ºPº.
(c) Pull out the dipstick and wipe off the fluid
with a clean rag. Re±insert the dipstick
and check that the fluid level is in the HOT
range.
(d) Perform this check with the fluid at normal
driving temperature (70 ± 80
°C or
158 ± 176°F).
NOTE: Wait about 30 minutes before check-
ing the fluid level after extended driving at high
speeds i n hot weather, driving i n heavy traffic
or with a trailer.
33. EXHAUST SYSTEM
Visually inspect for cracks, holes or loose sup-
ports.
If any change in the sound of the exhaust oK
smell of the exhaust fumes is noticed, have the
cause located and corrected.
± MAINTENANCEGeneral MaintenanceMA±17

(b) Using a belt tension gauge, measure the drive
belt tension.
Belt tension gauge:
Nippondenso BTG±20 (95506±00020)
Borroughs NO.BT±33±73F
Drive belt tension:
Alternator (3S±FE)
w/ A/C New belt 175 + 5lb
Used belt 130 + 10 lb
w/o A/C New belt 125 + 25 Ib
Used belt 95 + 20 Ib
Alternator (2vZ±FE) New belt 175 + 5 Ib
Used belt 115 + 20 Ib
PS pump New belt 125 + 25 Ib
Used belt 80 + 20 lb
If necessary, adjust the drive belt tension.
HINT:
wºNew beltº refers to a belt which has been used 5
minutes or less on a running engine.
wºUsed beltº refers to a belt which has been used on a
running engine for 5 minutes or more.
wAfter installing the belt, check that it fits properly i n the
ribbed grooves.
wCheck by hand to confirm that the belt has not slipped
out of the groove on the bottom of the pulley. .
wAfter installing a new belt, run the engine for about 5
minutes and recheck the belt tension.
MAINTENANCE OPERATIONS
ENGINE
Cold Engine Operations
1. REPLACE TIMING BELT
(a) Remove the timing belt.
3S±FE (See pages EM±23 to 26)
2VZ±FE (See pages EM±34 to 39)
(b) Install the timing belt.
3S±FE (See pages EM±29 to 33)
2VZ±FE (See pages EM±42 to 47)
2. INSPECT DRIVE BELTS
(a) Visually check the belt for excessive wear, frayed
cords etc.
If necessary, replace the drive belt.
HINT: Cracks on the rib side of a belt are considered accept-
able. If the belt has chunks missing from the ribs, it
should be replaced.
± MAINTENANCEMaintenance OperationsMA±4

3. INSPECT AIR FILTER
(a) Visually check that the air cleaner element is not ex-
cessively, damaged or oily.
If necessary, replace the air cleaner element.
(b) Clean the element with compressed air.
First blow from the inside thoroughly, then blow off
the outside of the element.
4. REPLACE AIR FILTER
Replace the air cleaner element with a new one.
5. REPLACE SPARK PLUGS
(a) Disconnect the spark plug cords at the rubber boot. DO
NOT pull on the cords.
(d) 2VZ±FE)
Check the electrode gap of new spark plugs.
Correct electrode gap: 1.1 mm (0.043 in.)
Recommended spark plugs: ND PQ20R
NGK BCPR6EP11
HINT: If adjusting the gap of a new plug, bend only the
base of the ground electrode. DO NOT touch the tip.
Never attempt to adjust the gap on a used plug.(c) PS±FE)
Adjust the electrode gap of new spark plugs.
Correct electrode gap: 1.1 mm (0.043 in.)
Recommended spark plugs: ND Q1 6R±U1 1
NGK BCPR5EY11
(b) Using a 16 mm plug wrench, remove the spark plugs.
± MAINTENANCEMaintenance OperationsMA±5