Primary Coil Winding

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 ignition coil connector. (See IGNITION COIL REMOVAL/INSTALLATION .)
Measure the resistance between the following terminals using an ohmmeter:
- L3 (with DEI system): A and B, B and C
- L3 (with SEI system): A and B
- AJ: A and B
  - If not within the specification, replace the ignition coil.
    
    Fig 1: Identifying Coil Connector Terminals
    Courtesy of MAZDA MOTORS CORP.
Specification

L3 (with DEI system): 0.49-0.57 ohms [20 °C {68 °F}]

L3 (with SEI system): 0.45-0.65 ohms [25 °C {77 °F}]

AJ: 0.45-1.15 ohms [25 °C {77 °F}]