Ignition Coil: Testing and Inspection

IGNITION COIL INSPECTION

Igniter

1. Carry out spark test. (See Spark Test.)

Ignition Coil Operation Inspection

1. Remove ignition coils high-tension leads, and spark plugs.




2. Connect the ignition coil, high-tension lead, spark plug, and the battery as shown in the figure.

CAUTION: When connecting the ignition coil, be sure to attach as a female terminal to each terminal. Otherwise, coil terminals may come into contact and the ignition coil could be damaged.

NOTE: Use the high-tension lead and spark plug that function properly.

3. Verify that the spark plug produces a strong, pale spark when changing the switch off to on.

WARNING: Do not hold the spark plug, high-tension lead, or ignition coil while inspecting the ignition coil. You may be subjected to a strong shock.

NOTE: No.1 and No.4 cylinders and No.2 and No.3 cylinder are ignited simultaneously.

Secondary Coil Winding

1. Remove the ignition coil.




2. Measure the resistance from lead hole 1 to 4, and lead hole 2 to 3 using an ohmmeter.
- If not as specified, replace the ignition coil.

Specification: 7 - 11 kilohms

Insulation Resistance of Case

1. Disconnect the high-tension lead.
2. Disconnect the ignition coil connector.




3. Measure the insulation resistance from terminal 1A to ignition coil case, and terminal 2A to ignition coil case using an ohmmeter.
- If not as specified, replace the ignition coil.

Specification: Above 10 megohms