Insulation Resistance of Case

WARNING: This page is about a different car, the 2004 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Remove the high-tension lead (L3 engine model). (See HIGH-TENSION LEAD (L3) REMOVAL/INSTALLATION .)
Disconnect the ignition coil connector.
Measure the insulation resistance from terminal B (L3 engine model), terminal A (AJ engine model) to ignition coil case using an ohmmeter.

Fig 1: Measuring Resistance Between Terminal B (L3 Engine Model)
Courtesy of MAZDA MOTORS CORP.
- If not as specified, replace the ignition coil.

Specification

10 megohms or more