2001 TOYOTA AVALON spark plugs replace

IG0DL-02
SPARK TEST
CHECK CONNECTIONS OF IGNITION COIL (WITH
CHECK POWER SUPPLY TO IGNITION COILS (WITH
1. Turn ignition switch to ON.
2. Check that there is battery positive voltage at ignition
CHECK RESISTANCE OF SENSORS
Resistance: Cold Hot
Camshaft position sensor
Crankshaft position sensor835 - 1,400 W
1,630 - 2,740 W1,060 - 1,645 W
2,065 - 3,225 W
CHECK IGT SIGNAL FROM ECM (See page DI-1 17)
TRY ANOTHER IGNITION COIL (WITH IGNITER) IGNITER) CONNECTORS
coil positive (+) terminal.
(See steps 4 and 5)NO
OK
NO
OK
OK
BAD
OK
BAD
BAD
BAD
Connect securely.
Replace ignition coil (with igniter).
Check wiring between ignition switch to
Replace camshaft position sensor.
Check wiring between ECM and ignition ignition coils (with igniters).
coils (with igniters), and then try another CHANGE IT TO NORMAL IGNITION COIL (WITH IGNITER)
AND PERFORM SPARK TEST AGAIN
Replace crankshaft position sensor.
ECM. OK IGNITER)
- IGNITIONIGNITION SYSTEM
IG-1
1244 Author
: Date
:
2001 AVALON (RM808U)
IGNITION SYSTEM
ON-VEHICLE INSPECTION
NOTICE:
ºColdº and ºHotº in these sentences express the tempera-
ture of the coils themselves. ºColdº is from -10°C (14°F) to
50°C (122°F) and ºHotº is from 50°C (122°F) to 100°C
(212°F).
1. INSPECT SPARK TEST
Check that the spark occurs.
(1) Remove the ignition coils (with igniters) (See page
IG-5).
(2) Remove the spark plugs.
(3) Install the spark plug to the ignition coil, and connect
the ignition coil connector.
(4) Ground the spark plug.
(5) See if spark occurs while engine is being cranked.
NOTICE:
To prevent gasoline from being injected from injectors dur-
ing this test, crank the engine for no more than 5 - 10 se-
conds at time.
If the spark does not occur, do the test as follows:

IG0147
Megger
Ground
B02629
P13225
16 mm Plug
Wrench
B02630
1.1 mm IG-2
- IGNITIONIGNITION SYSTEM
1245 Author
: Date
:
2001 AVALON (RM808U)
2. INSPECT SPARK PLUGS
NOTICE:

Never use a wire brush for cleaning.

Never attempt to adjust the electrode gap on a used
spark plug.

Spark plugs should be replaced every 193,000 km
(120,000 miles).
(a) Remove the 6 ignition coils (with igniters) (See page
IG-5).
(b) Inspect the electrode.

Using a megger (insulation resistance meter), mea-
sure the insulation resistance.
Standard correct insulation resistance:
10 MW or more
If the resistance is less than specified, proceed to step (d).
HINT:
If a megger is not available, these simple method of inspection
provides fairly accurate results.

Simple Method:

Quickly race the engine to 4,000 rpm 5 times.

Remove the spark plug (See step (c)).

Visually check the spark plug.
If the electrode is dry ... OK
If the electrode is wet ... Proceed to step (d)

Reinstall the spark plug (See step (g)).
(c) Using a 16 mm plug wrench, remove the 6 spark plugs.
(d) Visually check the spark plug for thread damage and insu-
lator damage.
If abnormal, replace the spark plug.
Recommended spark plug:
DENSO madeSK20R11
NGK madeIFR6A11
(e) Inspect the electrode gaps.
Maximum electrode gap for used spark plug:
1.3 mm (0.051 in.)
If the gap is greater than maximum, replace the spark plug.
Correct electrode gap for new spark plug:
1.1 mm (0.043 in.)
NOTICE:
If adjusting the gap of a new spark plug, bend only the base
of the ground electrode. Do not touch the tip. Never attempt
to adjust the gap on the used plug.

IG0152
B06521
Ohmmeter
P14244
Ohmmeter
- IGNITIONIGNITION SYSTEM
IG-3
1246 Author
: Date
:
2001 AVALON (RM808U)
(f) Clean the spark plugs.
If the electrode has traces of wet carbon, allow it to dry and then
clean with a spark plug cleaner.
Air pressure: Below 588 kPa (6 kgf/cm
2, 85 psi)
Duration: 20 seconds or less
HINT:
If there are traces of oil, remove it with gasoline before using the
spark plug cleaner.
(g) Using a 16 mm plug wrench, install the 6 spark plugs.
Torque: 18 N´m (180 kgf´cm, 13 ft´lbf)
(h) Reinstall the 6 ignition coil (See page IG-5).
3. INSPECT IGNITION COILS (WITH IGNITERS)
(See step 1.)
4. INSPECT CAMSHAFT POSITION SENSORS
(a) Remove the V-bank cover.
(b) Remove the air cleaner hose w/ resonator.
(c) Disconnect the sensor connectors.
(d) Using an ohmmeter, measure the resistance between ter-
minals.
Resistance:
Cold835 - 1,400 W
Hot1,060 - 1,645 W
If the resistance is not as specified, replace the sensor.
(e) Reconnect the sensor connectors.
(f) Reinstall the air cleaner hose w/ resonator.
(g) Reinstall the V-bank cover.
5. INSPECT CRANKSHAFT POSITION SENSOR
(a) Remove the sensor (See page IG-9).
(b) Using an ohmmeter, measure the resistance between the
terminals.
Resistance:
Cold1,630 - 2,740 W
Hot2,065 - 3,225 W
If the resistance is not as specified, replace the sensor.
(c) Reinstall the sensor (See page IG-9).

MA01M-02
P00495
Inside Outside
- MAINTENANCEENGINE
MA-5
47 Author
: Date
:
2001 AVALON (RM808U)
ENGINE
INSPECTION
HINT:
Inspect these items when the engine is cold.
1. REPLACE TIMING BELT (See page EM-15)
2. INSPECT DRIVE BELTS
(See pages CH-1, SR-3 and AC-17)
3. REPLACE SPARK PLUGS (See page IG-1)
4. INSPECT AIR FILTER
(a) Visually check that the air filter is not excessively dirty or
oily.
(b) Clean the air filter with compressed air.
First blow from the inside thoroughly, then blow off the
outside of the air filter.
5. REPLACE AIR FILTER
Replace the air filter with a new one.
6. REPLACE ENGINE OIL AND OIL FILTER
(See page LU-3)
7. REPLACE ENGINE COOLANT (See page CO-2)
8. REPLACE GASKET IN FUEL TANK CAP
(See page EC-6)
9. INSPECT FUEL LINES AND CONNECTIONS
(See page EC-6)
10. INSPECT EXHAUST PIPES AND MOUNTINGS
(See page EC-14)
11. ADJUST VALVE CLEARANCE (See page EM-4)