Battery Tray and PCM Component Removal Note

Remove the air cleaner, air hose and fresh air duct component. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
Remove the bolt and nut securing the wiring harness protector to the battery tray.
Remove the three battery tray bolts so that the battery tray is free to move.

Fig 1: Battery With Torque Specifications
Courtesy of MAZDA MOTORS CORP.
Release the wiring harness clips at the three locations shown in the figure and remove the battery tray and PCM component.

Fig 2: Identifying Wiring Harness Protector With Clips
Courtesy of MAZDA MOTORS CORP.
When replacing the battery tray with a new one, perform the following procedure:
1. Remove the PCM and bracket component.
2. Remove the bracket.
  
  Fig 3: PCM And Bracket And Mounting Bolts With Torque Specifications
  Courtesy of MAZDA MOTORS CORP.