spark plugs TOYOTA AVENSIS 2003 Service User Guide

±
IGNITIONIGNITION SYSTEM(1AZ±FSE)
18±13
AVENSIS REPAIR MANUAL (RM1018E)
(c)Using a 16 mm (0.63 in.) plug wrench, install the spark plugs.
Torque: 19 N
m (194 kgf
cm, 14 ft
lbf)
(d)Install the ignition coil with igniter.
Torque: 9.0 N
m (92 kgf
cm, 80 in.
lbf)
(e)Install the cylinder head cover No. 1. (See page 14±186)
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A78640
1.0 to 1.1 mm
B62019
±
IGNITION IGNITION SYSTEM (1AZ±FSE)
18±15
AVENSIS REPAIR MANUAL (RM1018E)
(d) Check the spark plug electrode gap.
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:
1.0 to 1.1 mm (0.039 to 0.043 in.)
(e) Clean the spark plugs.
If the electrode has traces of wet carbon, clean the electrode
with a spark plug cleaner then dry it. Air pressure: Blow 588 kPa (6 kgf/cm
2, 85 psi)
Duration: 20 seconds or less
HINT:
If there are traces of oil, remove them with gasoline before using
the spark plug cleaner.
2. INSPECT CAMSHAFT POSITION SENSOR
(a) Using an ohmmeter, measure the resistance between the terminals. RESISTANCE:
835 to 1,400  at cold
1,060 to 1,645 at hot
NOTICE:
ºColdº and ºHotº mean the temperature 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).
3. INSPECT CRANKSHAFT POSITION SENSOR
(a) Using an ohmmeter, measure the resistance between the terminals.
RESISTANCE:
985 to 1,600  at cold
1,265 to 1,890 at hot
NOTICE:
ºColdº and ºHotº mean the temperature 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).
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1807O±01
CHECK POWER SUPPLY TO IGNITION COIL WITHSENSOR (See page 18±3)
SPARK TEST
Replace crankshaft position sensor.
CHECK RESISTANCE OF CAMSHAFT POSITION
1. Turn ignition switch ON.
2. Check that there is battery voltage at ignition coil positive (+) terminal.
CHECK CONNECTION OF IGNITION COIL WITH IGNITER
Resistance: ColdHot
1,060 to 1,645

CHECK RESISTANCE OF CRANKSHAFT POSITION
Resistance: ColdHot
1,630 to 2,740
2,065 to 3,225

CHECK IGT SIGNAL FROM ECM
(See page 05±103)
REPAIR WIRING BETWEEN IGNITION COIL AND ECM Connect securely.
Check wiring between ignition switch to ignition coil with igniter.
Check ECM (See page 01±32)
NG
OK
OK
OK
OK NG
NG
NG
NG
NG
SENSOR (See page 18±3)
835 to 1,400


IGNITER
CHANGE IT TO NORMAL IGNITION COIL WITH IGNITER
AND PERFORM SPARK TEST AGAIN
OK
Replace ignition coil with igniter.
NG
OK
CONNECTOR
Replace camshaft position sensor.
±
IGNITIONIGNITION SYSTEM(1ZZ±FE/3ZZ±FE)
18±1
AVENSIS REPAIR MANUAL (RM1018E)
IGNITION SYSTEM(1ZZ±FE/3ZZ±FE)
ON±VEHICLE INSPECTION
NOTICE:
ºColdº and ºHotº in this section mean the temperature of the coils thems\
elves.ºColdº is from ±10C
(14F) to 50 C (122 F) and ºHotº is from 50 C (122 F) to 100 C (212 F).
1.INSPECT IGNITION COIL (WITH IGNITER) AND SPARK TEST
(a)Check for DTCs.
NOTICE:
If DTC is present, perform a troubleshooting in accordance with a proced\
ure for that DTC.
(b)Check that spark occurs. (1)Remove the cylinder head cover No. 2. (See page 14±6)
(2) Remove the ignition coils (with igniter).
(3) Using a 16mm (0.63 in) plug wrench, remove the spark plugs.
(4) Install the spark plugs to each ignition coil (with igniter) and connect the \
ignition coil connectors.
(5) Disconnect the 4 injector connectors.
(6) Ground the spark plugs.
(7) Check if spark occurs at each spark plug while engine is being cranked.
NOTICE:

Be sure to ground the spark plug when checking.

Replace the ignition coil it is given physical impact.

Do not crank the engine for more than 2 seconds.
If the sparks do not occur, do the following test:
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18±2
±
IGNITIONIGNITION SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
(c)Using a 16 mm (0.63 in.) plug wrench, install the spark plugs. Torque: 18 N
m (184 kgf
cm, 13 ft
lbf)
(d)Install the ignition coil with igniter.
Torque: 9.0 N
m (92 kgf
cm, 80 in.
lbf)
(e)Install the cylinder head cover No. 2. (See page 14±6)
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1807P±01
A50033
P03783
P03792
±
IGNITION IGNITION SYSTEM (1ZZ±FE/3ZZ±FE)
18±3
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION
1. INSPECT SPARK PLUG
(a) Clean the spark plugs.
If the electrode has traces of wet carbon, clean the electrode
with a spark plug cleaner then dry it.
Air pressure: Below 588 kPa (6kg/cm
2, 85 psi)
Duration: 20 seconds or less
(b) Check the spark plug for any damage on its thread and insulator damage.
If there is damage, replace the spark plug. Recommended spark plug:
DENSO madeK16R±U11
NGK madeBKR5EYA11
(c) Adjust electrode gap.Electrode gap: 1.0 to 1.1 mm (0.039 to 0.043 in.)
2. INSPECT CAMSHAFT POSITION SENSOR
(a) Using an ohmmeter, measure the resistance between the terminals. RESISTANCE:
835 to 1,400  at cold
1,060 to 1,645 at hot
NOTICE:
ºColdº and ºHotº mean the temperature of the coils themselve\
s.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).
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18AVENSIS (EWD526E)
E GLOSSARY OF TERMS AND SYMBOLS
BATTERY
Stores chemical energy and
converts it into electrical energy.
Provides DC current for the auto’s
various electrical circuits.GROUNDThe point at which wiring attaches to
the Body, thereby providing a return
path for an electrical circuit; without a
ground, current cannot flow.
CAPACITOR (Condenser)A small holding unit for temporary
storage of electrical voltage.HEADLIGHTSCurrent flow causes a headlight
filament to heat up and emit light. A
headlight may have either a single
(1) filament or a double (2) filament
1. SINGLE
FILAMENT
CIGARETTE LIGHTER
An electric resistance heating
element.2. DOUBLE
FILAMENT
CIRCUIT BREAKERBasically a reusable fuse, a circuit
breaker will heat and open if too
much current flows through it.
Some units automatically reset when
cool, others must be manually reset.HORNAn electric device which sounds a
loud audible signal.
DIODEA semiconductor which allows
current flow in only one direction.IGNITION COILConverts low–voltage DC current
into high–voltage ignition current for
firing the spark plugs.
DIODE, ZENER
A diode which allows current flow in one
direction but blocks reverse flow only up
to a specific voltage. Above that potential,
it passes the excess voltage. This acts as
a simple voltage regulator.LIGHTCurrent flow through a filament
causes the filament to heat up and
emit light.
PHOTODIODEThe photodiode is a semiconductor
which controls the current flow
according to the amount of light.LED (LIGHT EMITTING DIODE)
Upon current flow, these diodes emit
light without producing the heat of a
comparable light.
DISTRIBUTOR, IIAChannels high–voltage current from
the ignition coil to the individual
spark plugs.METER, ANALOG
Current flow activates a magnetic
coil which causes a needle to move,
thereby providing a relative display
against a background calibration.
FUSE
A thin metal strip which burns through
when too much current flows through it,
thereby stopping current flow and
protecting a circuit from damage.
FUSIBLE LINK
METER, DIGITALCurrent flow activates one or many
LED’s, LCD’s, or fluorescent
displays, which provide a relative or
digital display.
FUEL
A heavy–gauge wire placed in high
amperage circuits which burns through on
overloads, thereby protecting the circuit.
The numbers indicate the crosssection
surface area of the wires.(for Medium Current Fuse)
(for High Current Fuse or
Fusible Link)MOTOR A power unit which converts
electrical energy into mechanical
energy, especially rotary motion.
M
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