Illumination Light Inspection

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The illumination light is built into the electric parking brake switch. If there is any malfunction, replace the electric parking brake switch.

Remove the electric parking brake switch. (See ELECTRIC PARKING BRAKE SWITCH REMOVAL/INSTALLATION .)
Apply battery positive voltage to electric parking brake switch terminal I, and connect terminal J to ground.

Fig 1: Electric Parking Brake Switch Wiring Harness-Side Connector
Courtesy of MAZDA MOTORS CORP.
Verily that the illumination light turns on.

Fig 2: Illumination Light

Courtesy of MAZDA MOTORS CORP.

If there is any malfunction, replace the electric parking brake switch.