Primary coil winding

WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the ignition coil connector.
Measure the resistance between the following terminals using an ohmmeter:
- A and B
  - If not as specified, replace the ignition coil.
1. Resistance (Reference) 0.45-1.15 ohms [25 °C {77 °F}]
  
  Fig 1: Identifying Ignition Coil Connector Terminals
  Courtesy of MAZDA MOTORS CORP.