Ignition Coil: Testing and Inspection

IGNITION COIL INSPECTION [13B-MSP]

Ignition Coil Inspection (Spark Test)

1. Perform the spark test and identify the malfunctioning cylinder. Engine Control System Operation Inspection

2. Replace the ignition coil of the malfunctioning cylinder with that of a normal cylinder, and reperform the spark test. Engine Control System Operation Inspection

- 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 Inspection

1. Warm up the engine.

2. Connect the timing light to the high-tension lead.

3. Verify that the timing light flashes at a certain interval on all high-tension leads while idling and racing the engine.

- If the timing light does not flash at a certain interval, inspect the following:

a. Replace the high-tension lead and spark plug for which the timing light flashes at a certain interval.

b. Verify that the timing light flashes at a certain interval while idling and racing the engine.

- If the timing light does not flash at a certain interval even if the high-tension lead and spark plug are replaced, replace the ignition coil. Service and Repair
- If the high-tension lead and spark plug are replaced and the timing light flashes at a certain interval, a high-tension lead or spark plug malfunction can be considered possible causes. Testing and Inspection Testing and Inspection