Secondary Coil Resistance Inspection

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Remove the ignition coils. (See IGNITION COIL REMOVAL/INSTALLATION [MZI-3.7] ).
Using a tester, measure the resistance between the ignition coil terminal A and ignition coil boot socket.
- If not within the specification, replace the ignition coil.
  Ignition coil secondary coil resistance
  
  5-6 kilohms
  
  Fig 1: Measuring Resistance Between Ignition Coil Terminal A And Ignition Coil Boot Socket
  Courtesy of MAZDA MOTORS CORP.