Secondary 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.
Remove the ignition coil. (See IGNITION COIL REMOVAL/INSTALLATION .)
Measure the resistance between the following using an ohmmeter.
- Terminal A to coil boot socket
  - If not as specified, replace the ignition coil.
1. Resistance (Reference) 5.0-6.0 kilohms [25 °C {77 °F}]
  
  Fig 1: Measuring Resistance Between Terminal A & Coil Boot Socket
  Courtesy of MAZDA MOTORS CORP.