Connectivity Master Unit (CMU) Removal/Installation

NOTE:

The Bluetooth® pairing information stored in the connectivity master unit (CMU) cannot be copied to the CMU after replacement. Before replacing the CMU, explain to the customer that the Bluetooth® pairing resetting is required.

Perform the backup restore using the diagnostic assist function.
NOTE:
- For the backup restore method, refer to [DIAGNOSTIC ASSIST FUNCTION [CONNECTIVITY MASTER UNIT]].
Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .)
Remove the passenger-side decoration panel. (See DECORATION PANEL REMOVAL/INSTALLATION .)
Remove the bolts.

Fig 1: CMU And Bolts With Torque Specification
Courtesy of MAZDA MOTORS CORP.
Remove the CMU in the direction of the arrow shown in the illustration.

Courtesy of MAZDA MOTORS CORP.
Disconnect the connectors.

Courtesy of MAZDA MOTORS CORP.
Install in the reverse order of removal.
If the connectivity master unit (CMU) is replaced, perform the following procedure.
1. Switch the ignition ON (engine off) to complete the global central configuration (GCC) for the connectivity master unit (CMU).
2. Switch the ignition OFF.
3. Switch the ignition ON (engine off) again.
4. Clear the DTC. (See CLEARING DTC .)
5. Install the following using the diagnostic assist function.
  - Backup restore
  - Owner's manual data
  NOTE:
  - For the installation method and the backup restore for the owner's manual data, refer to MAZDA CONNECT [DIAGNOSTIC ASSIST FUNCTION [CONNECTIVITY MASTER UNIT]].