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IGNITION SYSTEM > PARTS

LOCATION

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IGNITION SYSTEM > SYSTEM

DIAGRAM

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IGNITION SYSTEM > ON-VEHICLE

INSPECTION

HINT:In this section, the terms cold and hot refer to the temperature of the coils. Cold

means approximately -10 to 50C (50 to 122F). Hot means approximately 50 to

100C (122 to 212F).

1. PERFORM SPARK TEST

1. Check for DTCs.

NOTICE:

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If a DTC is present, perform troubleshooting procedure for that DTC.

2. Check whether sparks occur.

1. Remove the ignition coil ().

2.

Remove the spark plug.3.

Install the spark plug onto the ignition coil and connect the ignition coil

connector.

4. Disconnect the 3 injector connectors.5. Ground the spark plug.

6. Visually check that sparks occur while the engine is being cranked.

NOTICE:

Ground the spark plugs when checking them.

Replace the ignition coil if it has been stuck or dropped.

Do not crank the engine for more than 2 seconds.

3. Perform the spark test according to the procedure below.

1. Check that the wire harness side connector of the ignition coil with igniter

is securely connected.

Result:

Result Proceed to

NG Connect securely

OK Go to next step

2. Perform a spark test on each ignition coil with igniter.

1. Replace the ignition coil with igniter with a normally functioning

one.

2. Perform the spark test again.

Result:

Result Proceed to

OKReplace ignition coil

with igniter

NG Go to next step

3. Check the power supply to the ignition coil with igniter.1. Turn the Ignition Switch on (IG).

2. Check that there is battery voltage at the ignition coil positive (+)

terminal.

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Result:

Result Proceed to

NGCheck wiring between

engine switch and

ignition coil with igniter

OK Go to next step

4. Check the resistance of the crankshaft position sensor.

Standard resistance:

1,850 to 2,450 at 20C (68F)Result:

Result Proceed to

NGReplace crankshaft position

sensor

OK Go to next step

5. Check the IGT signal from the ECM.

Result:

Result Proceed to

NG Check ECM

OKRepair wiring betweenignition coil and ECM

4. Using a 16 mm plug wrench, install the spark plug.

Torque:

18 N*m{ 183 kgf*cm , 13 ft.*lbf }

5. Install the ignition coils ().

2. INSPECT SPARK PLUGNOTICE:

Do not use a wire brush for cleaning.

Do not attempt to adjust the electrode gap of a used spark plug.

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1. Check the electron.

1. Using a megaohmmeter, measure the insulation resistance.

Standard resistance:10 Mor more

If the resistance is less than the specified value, proceed to step (*3).

HINT:

If a megaohmmeter is not available, perform the following simple inspectioninstead.

2. Alternative inspection method:

1. Quickly accelerate the engine to 4,000 rpm 5 times.

2. Remove the spark plug.

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3. Visually check the spark plug.

4. If the electron is dry, the spark plug is functioning. Proceed to step 2.5. If the electrode is damp, proceed to steps (*1), (*2) and (*3).

6. Install the spark plug.

3.

Check the spark plug for any damage to its threads and insulator. (*1)If there is any damage, replace the spark plug.

Recommended spark plug:

Supplier Parts code

DENSO K20HR-U11

4.

Check the spark plug electrode gap. (*2)

Maximum electrode gap for used spark plug:

1.3 mm (0.051 in.)

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

Correct electrode gap for new spark plug:

1.0 to 1.1 mm (0.039 to 0.043 in.)NOTICE:

Bend only the base of the ground electrode when adjusting the gap of a new spark

plug.

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5. Clean the spark plugs. (*3)If the electrode has traces of wet carbon, clean the electrode with a spark plug

cleaner and then dry it.

Air pressure:588 kPa (6 kgf/cm

2, 85psi)

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 plugcleaner.

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IGNITION COIL > COMPONENTS

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IGNITION COIL > REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

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2. REMOVE AIR CLEANER CAP SUB-ASSEMBLY

1. Remove the 4 clamps.

2. Remove the 2 clamps and remove the air cleaner cap.

3. REMOVE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

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1. Remove the air cleaner filter element from the cylinder head cover.

4. REMOVE IGNITION COIL NO.1

1. Disconnect the 3 connectors.

2. Remove the 3 bolts and 3 ignition coils.

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IGNITION COIL > INSTALLATION

1. INSTALL IGNITION COIL NO.1

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1. Install the 3 ignition coils with the 3 bolts.

Torque:

9.2 N*m{ 94 kgf*cm , 81 in.*lbf }

2. Connect the 3 connectors.

2. INSTALL AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

1. Install the air cleaner filter element as shown in the illustration.

3. INSTALL AIR CLEANER CAP SUB-ASSEMBLY

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1. Install the air cleaner cap with the 2 clamps.

2. Tighten the 4 clamps.

4. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

Torque:

5.4 N*m{ 55 kgf*cm , 48 in.*lbf }

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