IGNITION SYSTEM [LF, LS]

01-18A IGNITION SYSTEM [LF, LS]

IGNITION SYSTEM LOCATION INDEX SPARK PLUG
[LF, LS] ......................... 01-18A-1 REMOVALJINSTALLATION [LF, LS] ... 01-18A-3
IGNITION COIL SPARK PLUG INSPECTION [LF, LS] .. . 01-18A-3
REMOVALJINSTALLATION [LF, LS] .. . 01-18A-2 Specification .......•.......•.... . 01-18A-3
IGNITION COIL INSPECTION Plug Gap Inspection .............. • 01-18A-3 •
[LF, LS] ......................... 01-18A-2 Cleaning ..............•........ . 01-18A-3 • : !

Ignition Coil Inspection ............. 01-18A-2 Visual Inspection ............•.... . 01-18A-4

Ignition Coil with Built-in Igniter Resistance Inspection ............. . 01-18A-4
Inspection. . . . . . . . . . . . . . . . . . . . . . 01-18A-2

IGNITION SYSTEM LOCATION INDEX [LF, LS]

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Ignition coil 2 Spark plug

(See 01-18A-2 IGNITION COIL REMOVAU (See 01-18A-3 SPARK PLUG REMOVAU
INSTALLATION [LF, L5].) INSTALLATION [LF, LS].)
(See 01-18A-2 IGNITION COIL INSPECTION [LF, (See 01-18A-3 SPARK PLUG INSPECTION [LF,
LS].) L5].)

01-18A-1
 IGNITION SYSTEM [LF, LS]
IGNITION COIL REMOVAUINSTALLATION [LF, LS]
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1. Remove the battery cover. (See 01-17A-2 BATTERY REMOVAUINSTALLATION [LF, LS].)
2. Disconnect the negative battery cable.
3. Remove the plug hole plate. (See 01-1 OA-S PLUG HOLE PLATE REMOVAUINSTALLATION [LF, LS].)
4. Remove in the order indicated in the table.
5. Install in the reverse order of removal.
1 Plug hole plate bracket 6.0-9.5
{62-96, ~ (1)1
2 Connector 54-84} ljl-----
3 Ignition coil

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N·m {kgf.cm, in.lbf}
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IGNITION COIL INSPECTION [LF, LS]
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Ignition Coil Inspection

1. Perform the spark test and identify the malfunctioning cylinder.
2. Replace the ignition coil of the malfunctioning cylinder with that of a normal cylinder, and reperform the spark test.
• If the spark is not normal due to a malfunctioning ignition coil, replace that ignition coil.
• It is unlikely that all four ignition coils fail to operate properly. To prevent replacing a normal component,
perform the above procedure, identify the malfunctioning ignition coil, and replace it.

Ignition Coil with Built-in Igniter Inspection

1. Remove the battery cover. (See 01-17A-2 BATTERY REMOVAUINSTALLATION [LF, LS].)
2. Disconnect the negative battery cable.
3. Remove the plug hole plate. (See 01-10A-S PLUG HOLE PLATE REMOVAUINSTALLATION [LF, LS].)
4. Disconnect the ignition coil connector.
5. Measure the resistance between each terminal on the ignition coil connector using an analog circuit tester.
• If the measurement corresponds to the table, replace the ignition coil.
Tester Connection Position
Item Condition
Positive Negative
C A
o ohm is not normal (00 ohm is normal)
Terminal B A
C B 00 or 0 ohm is not normal (several kilohms is normal)

CSA

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01-18A-2
 IGNITION SYSTEM [LF, LS]
SPARK PLUG REMOVAUINSTALLATION [LF, L5]
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Caution
• If a spark plug that is not as specified is installed, engine performance will be deteriorated. Install
only the specified spark plug when replacing.

•
1. Remove the battery cover. (See 01-17A-2 BATTERY REMOVAUINSTALLATION [LF, LS].)
2. Disconnect the negative battery cable.
3. Remove the plug hole plate. (See 01-1 OA-S PLUG HOLE PLATE REMOVAUINSTALLATION [LF, LS].)
4. Remove the ignition coils. (See 01-18A-2 IGNITION COIL REMOVAUINSTALLATION [LF, LS].)
S. Remove the spark plugs using a plug-wrench.
6. Install in the reverse order of removal.

Tightening torque
10-14 N·m {102-142 kgf.cm, 89-123 in·lbf}

SPARK PLUG INSPECTION [LF, L5]

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Specification

Spark plug type

LFG1 18 110 (ILTR5A-13G), L3Y2 18 110

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Plug Gap Inspection

Caution
• To avoid possible damage to the tip, do not adjust the plug gap.
• To prevent damaging the tip, use a wire type plug gap gauge when inspecting the plug gap.

1. Measure the spark plug gap using a wire type plug gap gauge.
• If not within the standard specification, replace the spark plug.

Spark plug gap

Standard: 1.25-1.45 mm {0.0493-0.0570 in}
New spark plug (reference): 1.25-1.35 mm {0.0493-0.0531 in}

Cleaning

Caution
• Carbon may adhere to the tip of the spark plug during vehicle delivery or repeated short distance
driving during the winter time. If there is any malfunction such as rough idling or start difficulty
due to carbon adhesion causing plug fouling, burn off the carbon by performing no-load racing of
the engine.
• When performing the no-load racing, apply the side brake and foot brake, move the shift lever to
neutral (MTX), or the selector lever to P position (ATX) to prevent an accident and serious injury.
• To avoid possible damage to the spark plug tip, do not use a wire brush for cleaning.

Note
• To avoid possible damage to the tip, use gasoline to clean the spark plugs after removing dirt.
• If the accelerator pedal is depressed continuously for a specified time, the engine speed may decrease to
the idle speed. This is due to the PCM control operation, which prevents overheating, and it does not
indicate a malfunction.
• Do not perform no-load racing at high engine speed continuously for 10 s or more.

1. If there is carbon adhering to the spark plug, perform no-load racing at 4,000 rpm for 2 min, 2 times.

01-18A-3
 IGNITION SYSTEM [LF, LS]
Visual Inspection
1. Inspect the following items:
• If any of the following malfunctions are
indicated, replace the spark plug.
Insulator breakage
Worn electrode -t----BREAKAGE
Damaged gasket BURNS
Badly burned insulator (sparking side)
}::::=:~--- DAMAGE

WEAR AND -t--\-'~

CARBON
DEPOSITS
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Resistance Inspection
1. Measure the resistance of the spark plug using a
tester as shown in the figure.
• If not within the specification, replace the
spark plug.

Spark plug resistance [25°C {77 OF}]

3.0-7.5 kilohms

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01-18A-4