Vehicle Interior

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.

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Remove the trunk lid opener switch (See TRUNK LID OPENER SWITCH REMOVAL/INSTALLATION .)
Verify the continuity of trunk lid opener switch terminals A and D.

Fig 1: Trunk Lid Opener Switch Continuity Reference Chart
Courtesy of MAZDA MOTORS CORP.

Fig 2: Inspecting Trunk Lid Opener Switch
Courtesy of MAZDA MOTORS CORP.
- If not as indicated in the table, replace the trunk lid opener switch.