Ignition Coil Operation Inspection - Miata, Protege & Protege5

WARNING: This page is about a different car, the 2003 Mazda Protege5, 2003 Mazda Protege, 2003 Mazda MX-5 Miata, 2003 Mazda MPV, and 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

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.

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

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

Courtesy of MAZDA MOTORS CORP.

NOTE: MPV ignition coil case insulation resistance information not available from manufacturer.