Ignition Coil Operation Inspection (Miata, Protege & Protege5)

NOTE: Use known good spark plugs and high-tension leads to test coils.

NOTE: Cylinders No. 1 and 2 and No. 3 and 4 are fired simultaneously.

1. Remove ignition coils, spark plugs and high-tension leads. Connect all components as shown in Fig 1 .
2. Ensure spark plug produces a strong, pale spark when turning switch from off to on.

Fig 1: Testing Ignition Coils (Miata, Protege & Protege5)

Courtesy of MAZDA MOTORS CORP.