Connectivity Master Unit (Control Module Unit) Removal/Installation

NOTE:

The connectivity master unit (Control Module Unit) has stored vehicle specification information.
A new Control Module Unit does not have any stored vehicle specification information.
When the ignition is switched ON (engine off or on) after replacing the Control Module Unit, the unit reads and stores the vehicle specification information sent via CAN communication from the instrument cluster.
The Bluetooth ® pairing information stored in the Control Module Unit cannot be written to a new Control Module Unit. Therefore, the Bluetooth® pairing information will be eliminated if the Control Module Unit is replaced. Before replacing the Control Module Unit, explain to the customer that the Bluetooth® pairing resetting is required.

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the following parts:
(1) Lower decoration panel (See DECORATION PANEL REMOVAL/INSTALLATION .) (2) Upper decoration panel (See DECORATION PANEL REMOVAL/INSTALLATION .) (3) Upper column cover (See COLUMN COVER REMOVAL/INSTALLATION .) (4) Meter hood No. 1 (See METER HOOD REMOVAL/INSTALLATION .) (5) Center display component (See CENTER DISPLAY REMOVAL/INSTALLATION .)
Remove the screws.

Fig 1: Removing Control Module Unit From Center Display
Courtesy of MAZDA MOTORS CORP.
Remove the Control Module Unit from the center display.
Install in the reverse order of removal.
When the Control Module Unit is replaced, perform the automatic configuration using the following procedure.
(1) Switch the ignition ON (engine off or on). (2) Select [Settings] on the center display. (3) Select [System] on the center display. (4) Select [Factory Reset] on the center display. (5) Select [YES] on the center display and implement the Control Module Unit initialization. (6) Verify that the Control Module Unit restarts and the menu screen is displayed. (7) Switch the ignition OFF. (8) Remove all of the remote transmitters from the vehicle, lock all doors, keep the remote transmitters 2 m {79 in} or more from the vehicle, and wait for 5 min or more. (9) The Control Module Unit automatic configuration is completed. (10) Using the M-MDS, verify that DTC U2300:54 or U2300:55 is not displayed.
- If DTC U2300:54 or U2300:55 is displayed, go to the DTC troubleshooting procedure. (See DTC U2300:54 [CONNECTIVITY MASTER UNIT] .) (See DTC U2300:55 [CONNECTIVITY MASTER UNIT] .)