Coil Resistance Inspection

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable.
Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
Disconnect the OCV connector.
Measure the resistance between terminals A and B using an ohmmeter.
- If not as specified, replace the OCV.
  
  Fig 1: Identifying OCV Connector Terminals
  Courtesy of MAZDA MOTORS CORP.
Specification

6.9-7.9 ohms
Connect the OCV connector.
Install the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)