Take the appropriate action and verify that the warning light turns off.

Taking Action
Message Indicated on DisplayMazda 6 Owners Manual: Ignition coil inspection
Primary Coil Winding
1. Remove the ignition coil.
2. Measure the resistance between the following lead holes using an ohmmeter.
A and B, B and C
- If not specified, replace the ignition coil.
Specification
0.49-0.57 ohms [20°C {68°F}]
Secondary Coil Winding
1. Remove the igni ...
Mazda 6 Owners Manual: Foreword
Outline
There are two on-board diagnostic functions: Operation mode, which
inspects for and indicates correct operation of the input signals to the
control module, and condition detection mode, which indicates troubles in
the system.
The two functions can be done using either of the f ...