Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 238

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1GR-FE IGNITION – IGNITION SYSTEM

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ON-VEHICLE INSPECTION

1.

CHECK IGNITION COIL ASSEMBLY AND PERFORM
SPARK TEST
(a) Check for DTCs.

NOTICE:
If any DTC is present, perform troubleshooting
in accordance with a procedure for that DTC.

(b) Check that sparks occur.

(1) Remove the ignition coils.
(2) Using a 16 mm plug wrench, remove the spark

plugs.

(3) Install the spark plugs onto the ignition coils,

and connect the ignition coil connectors.

(4) Disconnect the 6 injector connectors.
(5) Ground the spark plugs.
(6) Check that sparks occur at each spark plug

while the engine is being cranked.
NOTICE:
•

Be sure to ground the spark plugs when
checking.

•

Replace any ignition coils that have been
subjected to any physical impact.

•

Do not crank the engine for more than 2
seconds.

If sparks do not occur, perform the following
test:

(c) Spark test flow chart.

(1) Check that the wire harness side connector of

ignition coil with igniter is securely connected.
Result

(2) Perform the spark test on each ignition coil with

igniter.
1.Replace the ignition coil with igniter with a
functioning one.
2.Perform the spark test again.
Result

(3) Check that the power is supplied to the ignition

coil.
1.Turn the ignition switch ON.
2.Check that the positive (+) battery voltage is
applied to the positive (+) terminal of the
ignition coil.

Result

Proceed to

NG

Connect securely.

OK

Go to next step.

Result

Proceed to

OK

Replace ignition coil with igniter.

NG

Go to next step.

1GR-FE IGNITION – IGNITION SYSTEM

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Result

(4) Measure the output voltage of the VVT sensor.

1.Inspect the VVT sensor in accordance with
the procedure (See page

ES-192

).

Result

(5) Check the resistance in crankshaft position

sensor.
Standard resistance

Result

(6) Check the IGT signal from the ECM.

Result

(d) Using a 16 mm plug wrench, install the spark plugs.
(e) Install the ignition coils.

2.

INSPECT SPARK PLUG
NOTICE:
Do not use a wire brush for cleaning.

(a) Check the electrode.

(1) Using a megaohmmeter, measure the

insulation resistance.
Standard resistance:

10 M

Ω or more

HINT:
•

If the result is not as specified, clean the
spark plug with a spark plug cleaner and
measure the resistance again.

•

If a megaohmmete is not available, perform
the following simple inspection instead.

(b) Alternative inspection method.

(1) Quickly accelerate the engine to 4,000 rpm 5

times.

(2) Remove the spark plug.

Result

Proceed to

NG

Check wiring between ignition

switch and ignition coil assembly.

OK

Go to next step.

Result

Proceed to

NG

Replace VVT sensor

OK

Go to next step.

Standard condition

Specified condition

at 20

°C (68°F)

1,850 to 2,450

Ω

Result

Proceed to

NG

Replace the crankshaft position

sensor.

OK

Go to next step.

Result

Proceed to

NG

Check ECM

OK

Repair wiring between ignition coil

and ECM.

Ground

Megaohmmeter

I039522E11

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1GR-FE IGNITION – IGNITION SYSTEM

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(3) Visually check the spark plug.

If the electrode is dry, the spark plug is
functioning properly. If the electrode is damp,
proceed to the next step.

(c) Check the spark plug for any damage to its thread

and insulator.
If there is damage, replace the spark plug.
Recommended spark plug

(d) Check the spark plug electrode gap.

Maximum electrode gap for used spark plug

If the gap is greater than the maximum, replace the
spark plug.
Electrode gap for new spark plug

(e) Clean the spark plug.

If the electrode has traces of wet carbon, clean the
electrode with a spark plug cleaner and then dry it.
Air pressure:

Below 588 kPa (6 kg/cm

2

, 85 psi)

Duration:

20 seconds or less

HINT:
Only use the spark plug cleaner when the electrode
is free of oil. If the electrode has traces of oil, use
gasoline to clean off the oil before using the spark
plug cleaner.

P003783E01

Manufacturer

Product

DENSO

K20HR-U11

NGK

LFR6C11

Electrode Gap

A122451E01

Product

Electrode gap

K20HR-U11

1.1 mm (0.043 in.)

LFR6C11

1.1 mm (0.043 in.)

Product

Electrode gap

K20HR-U11

1.0 to 1.1 mm (0.039 to 0.043 in.)

LFR6C11

1.0 to 1.1 mm (0.039 to 0.043 in.)

B062019

1GR-FE IGNITION – IGNITION COIL

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ENGINE

1GR-FE IGNITION

IGNITION COIL

COMPONENTS

AIR CLEANER ASSEMBLY

IGNITION COIL
ASSEMBLY

NO. 1 SURGE TANK STAY

OIL BAFFLE
PLATE

V-BANK COVER

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

21 (214, 16)

9.0 (92, 80 in.*lbf)

x2

x6

x6

10 (102, 7.4)

NO. 2 VENTILATION HOSE

8.0 (83, 71 in.*lbf)

8.0 (83, 71 in.*lbf)

VACUUM HOSE

7.5 (76, 66 in.*lbf)

x2

A126387E01