1. Disconnect the parking brake switch connector.
2. Verify that the continuity is as indicated in the table.

If not as indicated in the table, replace the parking brake switch.

Rear Parking Brake Cable Removal/InstallationWarning/Indicator Lights
Warning (Display Indication)
Message information such as system operations or malfunctions is indicated in
the display. Check the vehicle condition or have the vehicle inspected at an Authorized
Mazda Dealer according to the indication.
Brake System Warning Light
This warning has th ...
Vanity Mirror Illumination Inspection
1. Disconnect the negative battery cable..
2. Remove the sunvisor..
3. Verify that the continuity between the vanity mirror illumination terminals
is as indicated in the table.
If not as indicated in the table, replace the sunvisor.
...
Spark Plug [Skyactiv G 2.0]
Purpose, Function
The spark plug generates spark, ignition of the air-fuel mixture occurs,
and combustion of the air-fuel mixture is triggered.
Construction
The spark plug is installed to the cylinder head.
Iridium on the center electrode and platinum on the ...