With Center Display

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 following parts:
1. Front scuff plate (RH) (See FRONT SCUFF PLATE REMOVAL/INSTALLATION .)
2. Front side trim (RH) (See FRONT SIDE TRIM REMOVAL/INSTALLATION .)
3. A-pillar trim (RH) (See A-PILLAR TRIM REMOVAL/INSTALLATION .)
Disconnect the Sirius XM satellite radio unit connector. (with SiriusXM satellite radio system)
Disconnect antenna feeder No. 2.

Fig 1: Disconnecting Antenna Feeder No. 2 And Sirius XM Satellite Radio Unit Connector
Courtesy of MAZDA MOTORS CORP.
Verify that the continuity between antenna feeder No. 1 terminals is as indicated in the table.

Fig 2: Antenna Feeder No. 1 Terminals Continuity Chart
Courtesy of MAZDA MOTORS CORP.

Fig 3: Checking Continuity Between Antenna Feeder No. 1 Terminals With Sirius XM Radio System
Courtesy of MAZDA MOTORS CORP.
- If not as indicated in the table, replace antenna feeder No. 1.