IG-6

IGNITION - CAMSHAFT POSITION SENSOR

CAMSHAFT POSITION SENSOR

IG09Q-03

COMPONENTS

V-Bank Cover

Camshaft Position Sensor (Bank 1)

O-Ring
8 (80, 69 in.·lbf)
Camshaft Position Camshaft Position Sensor
Sensor (Bank 2) Connector
Camshaft Position Sensor
O-Ring
Connector
Air Cleaner Hose
w/ Resonator
8 (80, 69 in.·lbf)

Vacuum Hose

N·m (kgf·cm, ft·lbf) : Specified torque

Non-reusable part B07461

2001 AVALON (RM808U)

Author
: Date
: 1249

 IG-7
IGNITION - CAMSHAFT POSITION SENSOR
IG0DN-02

REPLACEMENT
1. REMOVE V-BANK COVER
(a) Using a 5 mm hexagon wrench, remove the 3 cap nuts.
(b) Loosen the V-bank cover fastener counterclockwise.
(c) Remove the V-bank cover.
2. REMOVE AIR CLEANER HOSE WITH RESONATOR
5 mm 3. REMOVE CAMSHAFT POSITION SENSORS
Hexagon (a) Disconnect the 2 camshaft position sensor connectors.
Wrench A10518

(b) Remove the bolt and camshaft position sensor. Remove

the 2 camshaft position sensors.
(c) Remove the O-rings from the camshaft position sensors.
4. REINSTALL NEW CAMSHAFT POSITION SENSORS
(a) Install new O-rings to new camshaft position sensors.
(b) Install the camshaft position sensor with the bolt. Install
the 2 camshaft position sensors.
Torque: 8 N·m (80 kgf·cm, 69 in.·lbf)
B06698 (c) Connect the 2 camshaft position sensor connectors.
5. REINSTALL AIR CLEANER HOSE WITH RESONATOR
6. REINSTALL V-BANK COVER
(a) Using 5 mm hexagon wrench, install the V-bank cover
with the 3 cap nuts.
(b) Press down the V-bank cover fastener.

2001 AVALON (RM808U)

Author
: Date
: 1250

IG-8
IGNITION - CRANKSHAFT POSITION SENSOR

CRANKSHAFT POSITION SENSOR

IG067-03

COMPONENTS

Crankshaft Position Sensor

Connector

8 (80, 69 in.·lbf)

Crankshaft Position
Sensor

RH Fender Apron Seal

N·m (kgf·cm, ft·lbf) : Specified torque B07462

2001 AVALON (RM808U)

Author
: Date
: 1251

 IG-9
IGNITION - CRANKSHAFT POSITION SENSOR
IG068-02

REPLACEMENT
1. REMOVE RH FENDER APRON SEAL
2. REMOVE CRANKSHAFT POSITION SENSOR
(a) Disconnect the crankshaft position sensor connector.

(b) Remove the bolt and crankshaft position sensor.

3. REINSTALL NEW CRANKSHAFT POSITION SENSOR
(a) Install a new crankshaft position sensor with the bolt.
Torque: 8 N·m (80 kgf·cm, 69 in.·lbf)
(b) Connect the crankshaft position sensor connector.
4. REINSTALL RH FENDER APRON SEAL

B06520

2001 AVALON (RM808U)

Author
: Date
: 1252

IG-4
IGNITION - IGNITION COIL

IGNITION COIL
IG09O-03

COMPONENTS

V-Bank Cover

Ignition Coil 8 (80, 69 in.·lbf)

Connector

Ignition Coil
(w/ Igniter)

Gasket

N·m (kgf·cm, ft·lbf) : Specified torque

B07460

2001 AVALON (RM808U)

Author
: Date
: 1247

 IG-5
IGNITION - IGNITION COIL
IG0DM-02

REPLACEMENT
1. REMOVE V-BANK COVER
(a) Using a 5 mm hexagon wrench, remove the 3 cap nuts.
(b) Loosen the V-bank cover fastener counterclockwise.
(c) Remove the V-bank cover.
2. REMOVE IGNITION COILS
5 mm (a) Disconnect the 6 ignition coil connectors.
Hexagon
Wrench A10518

(b) Remove the bolt, and pull out the ignition coil. Remove
the 6 ignition coils.
3. REINSTALL NEW IGNITION COILS
(a) Connect a new ignition coil to the spark plug, and attach
the ignition coil to the cylinder head cover, and install the
bolt. Install the 6 ignition coils.
Torque: 8 N·m (80 kgf·cm, 69 in.·lbf)
(b) Connect the 6 ignition coil connectors.
B06515 4. REINSTALL V-BANK COVER
(a) Using 5 mm hexagon wrench, install the V-bank cover
with the 3 cap nuts.
(b) Press down the V-bank cover fastener.

2001 AVALON (RM808U)

Author
: Date
: 1248

IG-10
IGNITION - IGNITION RELAY (No.2)

Engine Room J/B IGNITION RELAY (No.2) SF0DX-04

INSPECTION
1. REMOVE IGNITION RELAY (Marking: IG2)

Ignition
Relay

B09783

Continuity 2. INSPECT IGNITION RELAY

(a) Inspect the relay continuity.
Ohmmeter 2 Ohmmeter
1
(1) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
5
If there is no continuity, replace the relay.
(2) Check that there is no continuity between terminals
3 3 and 5.
If there is continuity, replace the relay.
No Continuity
S04970

(b) Inspect the relay operation.

2 (1) Apply battery positive voltage across terminals 1
Ohmmeter
1 and 2.
5 (2) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If there is no continuity, replace the relay.
3 3. REINSTALL IGNITION RELAY
Battery
Continuity
S04969

2001 AVALON (RM808U)

Author
: Date
: 1253

 IG-1
IGNITION - IGNITION SYSTEM

IGNITION SYSTEM IG0DL-02

ON-VEHICLE INSPECTION
NOTICE:
”Cold” and ”Hot” in these sentences express the tempera-
ture of the coils themselves. ”Cold” is from -10°C (14°F) to
50°C (122°F) and ”Hot” 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:

SPARK TEST
NO
CHECK CONNECTIONS OF IGNITION COIL (WITH Connect securely.
IGNITER) CONNECTORS BAD
OK
CHANGE IT TO NORMAL IGNITION COIL (WITH IGNITER) Replace ignition coil (with igniter).
AND PERFORM SPARK TEST AGAIN OK
NO
CHECK POWER SUPPLY TO IGNITION COILS (WITH Check wiring between ignition switch to
IGNITER) ignition coils (with igniters).
1. Turn ignition switch to ON.
2. Check that there is battery positive voltage at ignition
coil positive (+) terminal. BAD
OK
CHECK RESISTANCE OF SENSORS Replace camshaft position sensor.
(See steps 4 and 5) Replace crankshaft position sensor.
Resistance: Cold Hot
Camshaft position sensor 835 - 1,400 Ω 1,060 - 1,645 Ω
Crankshaft position sensor 1,630 - 2,740 Ω 2,065 - 3,225 Ω BAD
OK
CHECK IGT SIGNAL FROM ECM (See page DI-1 17) Check wiring between ECM and ignition
BAD coils (with igniters), and then try another
OK ECM.
TRY ANOTHER IGNITION COIL (WITH IGNITER)

2001 AVALON (RM808U)

Author
: Date
: 1244

IG-2
IGNITION - IGNITION SYSTEM

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.

Megger

Using a megger (insulation resistance meter), mea-
sure the insulation resistance.
Standard correct insulation resistance:
10 MΩ 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
Ground IG0147 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)).

B02629

(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 made SK20R11
NGK made IFR6A11
16 mm Plug
Wrench P13225

(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:
1.1 mm
If adjusting the gap of a new spark plug, bend only the base
B02630 of the ground electrode. Do not touch the tip. Never attempt
to adjust the gap on the used plug.
2001 AVALON (RM808U)

Author
: Date
: 1245

 IG-3
IGNITION - IGNITION SYSTEM

(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/cm2, 85 psi)
Duration: 20 seconds or less
HINT:
If there are traces of oil, remove it with gasoline before using the
spark plug cleaner.
IG0152 (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.)

Ohmmeter 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:
Cold 835 - 1,400 Ω
B06521
Hot 1,060 - 1,645 Ω

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.

Ohmmeter 5. INSPECT CRANKSHAFT POSITION SENSOR

(a) Remove the sensor (See page IG-9 ).
(b) Using an ohmmeter, measure the resistance between the
terminals.
Resistance:
Cold 1,630 - 2,740 Ω
Hot 2,065 - 3,225 Ω

If the resistance is not as specified, replace the sensor.

P14244
(c) Reinstall the sensor (See page IG-9 ).
2001 AVALON (RM808U)

Author
: Date
: 1246