TOYOTA CAMRY 1999 Service Repair Manual

IG0DF±01
CHECK POWER SUPPLY OF HIGH±TENSION COIL AND IGNITER
SPARK TEST
CHECK RESISTANCE OF HIGH±TENSION CORD
Maximum resistance: 25 kW per cord
CHECK RESISTANCE OF IGNITION COIL 1. Turn ignition switch to ON.
2. Check that there is battery voltage at ignition
coil positive (+) terminal. CHECK CONNECTION OF IGNITION COIL AND IGNITER
Resistance:
Cold Hot
Secondary
10.8 ± 14.9 kW13.1 ± 17.5 kWReplace the ignition coil (s). Connect securely.
Replace the cord(s).
Check wiring between ignition switch to
ignition coil and igniter.
NO
OK OK
OKBAD
BAD
BAD
BAD
CONNECTORS
Primary
0.70 ± 0.94 W0.85 ± 1.10 W AISAN made:
Secondary
6.8 ± 11.7 kW8.6 ± 13.7 kW Primary
0.70 ± 0.94 W0.85 ± 1.10 W Diamond made:
OK
Continue to the next page
± IGNITION (1MZ±FE)IGNITION SYSTEM
IG±1
1695 Author: Date:
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 IGNITER AND SPARK TEST
Check that the spark occurs.
(1) Remove the ignition coil.
(2) Remove the spark plug.
(3) Install the spark plug to the ignition coil, and connect
the ignition coil connector.
(4) Ground the spark plug.
(5) Check if spark occurs while engine is being
cranked.
NOTICE:
To prevent excess fuel being injected from the injectors
during this test, do not crank the engine for more 5 ± 10 se-
conds at a time.
If the spark does not occur, do the test as follows:

Replace the camshaft position sensor.CHECK RESISTANCE OF CAMSHAFT POSITION SENSOR
Resistance: Cold Hot
835 ± 1,400 W1,060 ± 1,645 W
CHECK IGT SIGNAL FROM ECM
CHECK RESISTANCE OF CRANKSHAFT POSITION SENSOR
Resistance: Cold Hot
1,630 ± 2,740 W2,065 ± 3,225 W
TRY ANOTHER IGNITERReplace the crankshaft position sensor.
Check wiring between ECM and igniter, and
then try another ECM.
OK
OK
OKBAD
BAD
BAD
OK
Continued from the previous page
DENSO made:
Wabash made:1,690 ± 2,560 W2,145 ± 3,010 W
B00848
P24453
WRONG
CORRECT
P24457
IG±2
± IGNITION (1MZ±FE)IGNITION SYSTEM
1696 Author: Date:
2. INSPECT HIGH±TENSION CORDS
(a) Remove the V±bank cover.
(b) Disconnect the high±tension cords from the spark plugs.
(1) Using needle±nose pliers, disconnect the cord
clamp from the engine wire protector.
(2) Disconnect the high±tension cords from the spark
plugs.
NOTICE:
Pulling on or bending the cords may damage the conductor
inside.
(3) Disconnect the high±tension cords from the clamp.
(c) Disconnect the high±tension cords from the ignition coils.
(1) Using a screwdriver, lift up the lock claw and discon-
nect the holder from the ignition coils.
(2) Disconnect the high±tension cord at the grommet.
NOTICE:

Pulling on or bending the cords may damage the con-
ductor inside.

Do not wipe any of the oil from the grommet after the
high±tension cord is disconnected.

P25722
(1)
(2)
P25768
Ohmmeter
S06107
± IGNITION (1MZ±FE)IGNITION SYSTEM
IG±3
1697 Author: Date:
(d) Remove the high±tension cords set.
(1) Disconnect the clamp from the emission control
valve set.
(2) Remove the high±tension cords set in indicated
direction.
(e) Using an ohmmeter, measure the resistance.
Maximum resistance: 25 kW per cord
If the resistance is greater than maximum, check the terminals.
If necessary, replace the high±tension cord.
(f) Install the high±tension cords set.

P24458HolderGrommet
S00813
CORRECT WRONG
Clearance
IG0147
Megger
Ground
S03776
IG±4
± IGNITION (1MZ±FE)IGNITION SYSTEM
1698 Author: Date:
(g) Connect the high±tension cords to the ignition coils.
(1) Assemble the holder and grommet.
(2) Align the spline of the ignition coil with the spline of
the holder, and push in the cord.
NOTICE:
Check that the holder is correctly installed to the grommet
and ignition coil as shown in the illustration.
(3) Check that the lock claw of the holder is engaged by
lightly pulling the holder.
(h) Connect the high±tension cords to the spark plugs.
(i) Install the V±bank cover.
3. 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 100,000 km
(60,000 miles).
(a) Remove the high±tension cords set. (See step 2)
(b) Remove the ignition coils.
(c) Inspect the electrode.
Using a megger (insulation resistance meter), measure
the insulation resistance.
Standard correct insulation resistance:
10 MW or more
If the resistance is less than specified, proceed to step (e).
HINT:
If a megger is not available, the following simple method of in-
spection provides fairly accurate results.
(d) Simple Method:
(1) Quickly race the engine to 4,000 rpm 5 times.
(2) Remove the spark plug. (See step (e))
(3) Visually check the spark plug.
If the electrode is dry ... OK
If the electrode is wet ... Proceed to step (f)
(4) Install the spark plug. (See step (i))

P13225
16 mm Plug
Wrench
P25746
DENSO PK20TR11 NGK BKR6EKPB11
P20584
IG0152
± IGNITION (1MZ±FE)IGNITION SYSTEM
IG±5
1699 Author: Date:
(e) Using a 16 mm plug wrench, remove the 6 spark plugs
from the RH and LH cylinder heads.
(f) Check the spark plug for thread damage and insulator
damage.
If abnormal, replace the spark plug.
Recommended spark plug:
DENSO madePK20TR11
NGK madeBKR6EKPB11
(g) 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.
(h) 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.
(i) Using a 16 mm plug wrench, install the 6 spark plugs to
the RH and LH cylinder heads.
Torque: 18 N´m (180 kgf´cm, 13 ft´lbf)
(j) Install the ignition coils.
(k) Install the high±tension cords set. (See step 2)
4. INSPECT IGNITION COILS
(a) Disconnect the high±tension cords from the ignition coils.
(b) Disconnect the ignition coil connectors.

S05622
Ohmmeter
B00849
Ohmmeter
S04599
Ohmmeter IG±6
± IGNITION (1MZ±FE)IGNITION SYSTEM
1700 Author: Date:
(c) Using an ohmmeter, measure the primary coil resistance
between the positive (+) and negative (±) terminals.
Primary coil resistance:
Cold0.70 ± 0.94 W
Hot0.85 ± 1.10 W
If the resistance is not as specified, replace the ignition coil.
(d) Using an ohmmeter, measure the secondary coil resis-
tance between the positive (+) and high±tension terminal.
Secondary coil resistance:
AISAN madeCold10.8 ± 14.9 kW
AISAN madeHot13.1 ± 17.5 kW
Diamond madeCold6.8 ± 11.7 kW
Diamond madeHot8.6 ± 13.7 kW
If the resistance is not as specified, replace the ignition coil.
(e) Connect the ignition coil connectors.
(f) Connect the high±tension cords to the ignition coils.
5. INSPECT CAMSHAFT POSITION SENSOR
(a) Disconnect the camshaft position sensor connector.
(b) Using an ohmmeter, measure the resistance between ter-
minals.
Resistance:
DENSO madeCold835 ± 1,400 W
DENSO madeHot1,060 ± 1,645 W
Wabash madeCold1,690 ± 2,560 W
Wabash madeHot2,145 ± 3,010 W
If the resistance is not as specified, replace the camshaft posi-
tion sensor.
(c) Connect the camshaft position sensor connector.

IG02I±03
S04720
± IGNITION (1MZ±FE)IGNITION COIL
IG±7
1701 Author: Date:
IGNITION COIL
REMOVAL
1. DISCONNECT HIGH±TENSION CORDS FROM
IGNITION COILS (See page IG±1)
2. REMOVE IGNITION COILS
(a) Disconnect the 3 connectors from the ignition coil.
(b) Remove the 3 bolts and 3 ignition coils from the LH cylin-
der head.
Torque: 8 N´m (80 kgf´cm, 69 in.´lbf)
HINT:
Arrange the ignition coils in correct order.

IG02J±01
IG±8
± IGNITION (1MZ±FE)IGNITION COIL
1702 Author: Date:
INSTALLATION
Installation is in the reverse order of removal. (See page IG±7)

S04589
IG02K±03
± IGNITION (1MZ±FE)CAMSHAFT POSITION SENSOR
IG±9
1703 Author: Date:
CAMSHAFT POSITION SENSOR
REMOVAL
REMOVE CAMSHAFT POSITION SENSOR
(a) Disconnect the camshaft position sensor connector.
(b) Remove the 2 bolts and camshaft position sensor.
Torque: 8 N´m (80 kgf´cm, 69 in.´lbf)

IG02L±01
IG±10
± IGNITION (1MZ±FE)CAMSHAFT POSITION SENSOR
1704 Author: Date:
INSTALLATION
Installation is in the reverse order of removal. (See page IG±9)